redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

[AFS]: Clean up the AFS sources 

Clean up the AFS sources.

Also remove references to AFS keys.  RxRPC keys are used instead.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
David Howells 2007-04-26 15:49:28 -07:00 committed by David S. Miller
parent 17926a7932
commit ec26815ad8
36 changed files with 506 additions and 906 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
fs/afs/Makefile
View File

@ -2,8 +2,6 @@
# Makefile for Red Hat Linux AFS client. # Makefile for Red Hat Linux AFS client.
# #
#CFLAGS += -finstrument-functions
kafs-objs := \ kafs-objs := \
callback.o \ callback.o \
cell.o \ cell.o \

12
fs/afs/cache.h
View File

@ -1,4 +1,4 @@
/* cache.h: AFS local cache management interface /* AFS local cache management interface
* *
* Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com) * Written by David Howells (dhowells@redhat.com)
@ -9,8 +9,8 @@
* 2 of the License, or (at your option) any later version. * 2 of the License, or (at your option) any later version.
*/ */
#ifndef _LINUX_AFS_CACHE_H #ifndef AFS_CACHE_H
#define _LINUX_AFS_CACHE_H #define AFS_CACHE_H
#undef AFS_CACHING_SUPPORT #undef AFS_CACHING_SUPPORT
@ -20,8 +20,4 @@
#endif #endif
#include "types.h" #include "types.h"
#ifdef __KERNEL__ #endif /* AFS_CACHE_H */
#endif /* __KERNEL__ */
#endif /* _LINUX_AFS_CACHE_H */

9
fs/afs/callback.c
View File

@ -21,7 +21,6 @@
#include "internal.h" #include "internal.h"
#include "cmservice.h" #include "cmservice.h"
/*****************************************************************************/
/* /*
* allow the fileserver to request callback state (re-)initialisation * allow the fileserver to request callback state (re-)initialisation
*/ */
@ -79,9 +78,8 @@ int SRXAFSCM_InitCallBackState(struct afs_server *server)
_leave(" = 0"); _leave(" = 0");
return 0; return 0;
} /* end SRXAFSCM_InitCallBackState() */ }
/*****************************************************************************/
/* /*
* allow the fileserver to break callback promises * allow the fileserver to break callback promises
*/ */
@ -156,9 +154,8 @@ int SRXAFSCM_CallBack(struct afs_server *server, size_t count,
_leave(" = 0"); _leave(" = 0");
return 0; return 0;
} /* end SRXAFSCM_CallBack() */ }
/*****************************************************************************/
/* /*
* allow the fileserver to see if the cache manager is still alive * allow the fileserver to see if the cache manager is still alive
*/ */
@ -166,4 +163,4 @@ int SRXAFSCM_Probe(struct afs_server *server)
{ {
_debug("SRXAFSCM_Probe(%p)\n", server); _debug("SRXAFSCM_Probe(%p)\n", server);
return 0; return 0;
} /* end SRXAFSCM_Probe() */ }

51
fs/afs/cell.c
View File

@ -1,4 +1,4 @@
/* cell.c: AFS cell and server record management /* AFS cell and server record management
* *
* Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com) * Written by David Howells (dhowells@redhat.com)
@ -44,7 +44,6 @@ struct cachefs_index_def afs_cache_cell_index_def = {
}; };
#endif #endif
/*****************************************************************************/
/* /*
* create a cell record * create a cell record
* - "name" is the name of the cell * - "name" is the name of the cell
@ -137,16 +136,15 @@ int afs_cell_create(const char *name, char *vllist, struct afs_cell **_cell)
_leave(" = 0 (%p)", cell); _leave(" = 0 (%p)", cell);
return 0; return 0;
badaddr: badaddr:
printk(KERN_ERR "kAFS: bad VL server IP address: '%s'\n", vllist); printk(KERN_ERR "kAFS: bad VL server IP address: '%s'\n", vllist);
error: error:
up_write(&afs_cells_sem); up_write(&afs_cells_sem);
kfree(cell); kfree(cell);
_leave(" = %d", ret); _leave(" = %d", ret);
return ret; return ret;
} /* end afs_cell_create() */ }
/*****************************************************************************/
/* /*
* initialise the cell database from module parameters * initialise the cell database from module parameters
*/ */
@ -199,10 +197,8 @@ int afs_cell_init(char *rootcell)
_leave(" = %d", ret); _leave(" = %d", ret);
return ret; return ret;
}
} /* end afs_cell_init() */
/*****************************************************************************/
/* /*
* lookup a cell record * lookup a cell record
*/ */
@ -234,8 +230,7 @@ int afs_cell_lookup(const char *name, unsigned namesz, struct afs_cell **_cell)
if (cell) if (cell)
ret = 0; ret = 0;
} } else {
else {
read_lock(&afs_cells_lock); read_lock(&afs_cells_lock);
cell = afs_cell_root; cell = afs_cell_root;
@ -247,8 +242,7 @@ int afs_cell_lookup(const char *name, unsigned namesz, struct afs_cell **_cell)
* for other reasons. * for other reasons.
*/ */
ret = -EDESTADDRREQ; ret = -EDESTADDRREQ;
} } else {
else {
afs_get_cell(cell); afs_get_cell(cell);
ret = 0; ret = 0;
} }
@ -259,10 +253,8 @@ int afs_cell_lookup(const char *name, unsigned namesz, struct afs_cell **_cell)
*_cell = cell; *_cell = cell;
_leave(" = %d (%p)", ret, cell); _leave(" = %d (%p)", ret, cell);
return ret; return ret;
}
} /* end afs_cell_lookup() */
/*****************************************************************************/
/* /*
* try and get a cell record * try and get a cell record
*/ */
@ -281,9 +273,8 @@ struct afs_cell *afs_get_cell_maybe(struct afs_cell **_cell)
write_unlock(&afs_cells_lock); write_unlock(&afs_cells_lock);
return cell; return cell;
} /* end afs_get_cell_maybe() */ }
/*****************************************************************************/
/* /*
* destroy a cell record * destroy a cell record
*/ */
@ -315,9 +306,8 @@ void afs_put_cell(struct afs_cell *cell)
BUG_ON(!list_empty(&cell->vl_graveyard)); BUG_ON(!list_empty(&cell->vl_graveyard));
_leave(" [unused]"); _leave(" [unused]");
} /* end afs_put_cell() */ }
/*****************************************************************************/
/* /*
* destroy a cell record * destroy a cell record
*/ */
@ -359,9 +349,8 @@ static void afs_cell_destroy(struct afs_cell *cell)
kfree(cell); kfree(cell);
_leave(" [destroyed]"); _leave(" [destroyed]");
} /* end afs_cell_destroy() */ }
/*****************************************************************************/
/* /*
* lookup the server record corresponding to an Rx RPC peer * lookup the server record corresponding to an Rx RPC peer
*/ */
@ -411,7 +400,7 @@ int afs_server_find_by_peer(const struct rxrpc_peer *peer,
return -ENOENT; return -ENOENT;
/* we found it in the graveyard - resurrect it */ /* we found it in the graveyard - resurrect it */
found_dead_server: found_dead_server:
list_move_tail(&server->link, &cell->sv_list); list_move_tail(&server->link, &cell->sv_list);
afs_get_server(server); afs_get_server(server);
afs_kafstimod_del_timer(&server->timeout); afs_kafstimod_del_timer(&server->timeout);
@ -419,20 +408,18 @@ int afs_server_find_by_peer(const struct rxrpc_peer *peer,
goto success; goto success;
/* we found it - increment its ref count and return it */ /* we found it - increment its ref count and return it */
found_server: found_server:
afs_get_server(server); afs_get_server(server);
success: success:
write_unlock(&cell->sv_lock); write_unlock(&cell->sv_lock);
read_unlock(&afs_cells_lock); read_unlock(&afs_cells_lock);
*_server = server; *_server = server;
_leave(" = 0 (s=%p c=%p)", server, cell); _leave(" = 0 (s=%p c=%p)", server, cell);
return 0; return 0;
}
} /* end afs_server_find_by_peer() */
/*****************************************************************************/
/* /*
* purge in-memory cell database on module unload or afs_init() failure * purge in-memory cell database on module unload or afs_init() failure
* - the timeout daemon is stopped before calling this * - the timeout daemon is stopped before calling this
@ -520,9 +507,8 @@ void afs_cell_purge(void)
} }
_leave(""); _leave("");
} /* end afs_cell_purge() */ }
/*****************************************************************************/
/* /*
* match a cell record obtained from the cache * match a cell record obtained from the cache
*/ */
@ -542,10 +528,9 @@ static cachefs_match_val_t afs_cell_cache_match(void *target,
_leave(" = FAILED"); _leave(" = FAILED");
return CACHEFS_MATCH_FAILED; return CACHEFS_MATCH_FAILED;
} /* end afs_cell_cache_match() */ }
#endif #endif
/*****************************************************************************/
/* /*
* update a cell record in the cache * update a cell record in the cache
*/ */
@ -563,5 +548,5 @@ static void afs_cell_cache_update(void *source, void *entry)
cell->vl_addrs, cell->vl_addrs,
min(sizeof(ccell->vl_servers), sizeof(cell->vl_addrs))); min(sizeof(ccell->vl_servers), sizeof(cell->vl_addrs)));
} /* end afs_cell_cache_update() */ }
#endif #endif

30
fs/afs/cell.h
View File

@ -1,4 +1,4 @@
/* cell.h: AFS cell record /* AFS cell record
* *
* Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com) * Written by David Howells (dhowells@redhat.com)
@ -9,8 +9,8 @@
* 2 of the License, or (at your option) any later version. * 2 of the License, or (at your option) any later version.
*/ */
#ifndef _LINUX_AFS_CELL_H #ifndef AFS_CELL_H
#define _LINUX_AFS_CELL_H #define AFS_CELL_H
#include "types.h" #include "types.h"
#include "cache.h" #include "cache.h"
@ -19,22 +19,18 @@
extern volatile int afs_cells_being_purged; /* T when cells are being purged by rmmod */ extern volatile int afs_cells_being_purged; /* T when cells are being purged by rmmod */
/*****************************************************************************/
/* /*
* entry in the cached cell catalogue * entry in the cached cell catalogue
*/ */
struct afs_cache_cell struct afs_cache_cell {
{
char name[64]; /* cell name (padded with NULs) */ char name[64]; /* cell name (padded with NULs) */
struct in_addr vl_servers[15]; /* cached cell VL servers */ struct in_addr vl_servers[15]; /* cached cell VL servers */
}; };
/*****************************************************************************/
/* /*
* AFS cell record * AFS cell record
*/ */
struct afs_cell struct afs_cell {
{
atomic_t usage; atomic_t usage;
struct list_head link; /* main cell list link */ struct list_head link; /* main cell list link */
struct list_head proc_link; /* /proc cell list link */ struct list_head proc_link; /* /proc cell list link */
@ -61,18 +57,14 @@ struct afs_cell
char name[0]; /* cell name - must go last */ char name[0]; /* cell name - must go last */
}; };
extern int afs_cell_init(char *rootcell); extern int afs_cell_init(char *);
extern int afs_cell_create(const char *, char *, struct afs_cell **);
extern int afs_cell_create(const char *name, char *vllist, struct afs_cell **_cell); extern int afs_cell_lookup(const char *, unsigned, struct afs_cell **);
extern int afs_cell_lookup(const char *name, unsigned nmsize, struct afs_cell **_cell);
#define afs_get_cell(C) do { atomic_inc(&(C)->usage); } while(0) #define afs_get_cell(C) do { atomic_inc(&(C)->usage); } while(0)
extern struct afs_cell *afs_get_cell_maybe(struct afs_cell **_cell); extern struct afs_cell *afs_get_cell_maybe(struct afs_cell **);
extern void afs_put_cell(struct afs_cell *);
extern void afs_put_cell(struct afs_cell *cell);
extern void afs_cell_purge(void); extern void afs_cell_purge(void);
#endif /* _LINUX_AFS_CELL_H */ #endif /* AFS_CELL_H */

46
fs/afs/cmservice.c
View File

@ -1,4 +1,4 @@
/* cmservice.c: AFS Cache Manager Service /* AFS Cache Manager Service
* *
* Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com) * Written by David Howells (dhowells@redhat.com)
@ -106,7 +106,6 @@ static DEFINE_SPINLOCK(afscm_calls_lock);
static DEFINE_SPINLOCK(kafscmd_attention_lock); static DEFINE_SPINLOCK(kafscmd_attention_lock);
static int kafscmd_die; static int kafscmd_die;
/*****************************************************************************/
/* /*
* AFS Cache Manager kernel thread * AFS Cache Manager kernel thread
*/ */
@ -177,10 +176,8 @@ static int kafscmd(void *arg)
/* and that's all */ /* and that's all */
complete_and_exit(&kafscmd_dead, 0); complete_and_exit(&kafscmd_dead, 0);
}
} /* end kafscmd() */
/*****************************************************************************/
/* /*
* handle a call coming in to the cache manager * handle a call coming in to the cache manager
* - if I want to keep the call, I must increment its usage count * - if I want to keep the call, I must increment its usage count
@ -202,10 +199,8 @@ static int afscm_new_call(struct rxrpc_call *call)
_leave(" = 0"); _leave(" = 0");
return 0; return 0;
}
} /* end afscm_new_call() */
/*****************************************************************************/
/* /*
* queue on the kafscmd queue for attention * queue on the kafscmd queue for attention
*/ */
@ -226,9 +221,8 @@ static void afscm_attention(struct rxrpc_call *call)
wake_up(&kafscmd_sleepq); wake_up(&kafscmd_sleepq);
_leave(" {u=%d}", atomic_read(&call->usage)); _leave(" {u=%d}", atomic_read(&call->usage));
} /* end afscm_attention() */ }
/*****************************************************************************/
/* /*
* handle my call being aborted * handle my call being aborted
* - clean up, dequeue and put my ref to the call * - clean up, dequeue and put my ref to the call
@ -266,9 +260,8 @@ static void afscm_error(struct rxrpc_call *call)
wake_up(&kafscmd_sleepq); wake_up(&kafscmd_sleepq);
_leave(""); _leave("");
} /* end afscm_error() */ }
/*****************************************************************************/
/* /*
* map afs abort codes to/from Linux error codes * map afs abort codes to/from Linux error codes
* - called with call->lock held * - called with call->lock held
@ -285,9 +278,8 @@ static void afscm_aemap(struct rxrpc_call *call)
default: default:
break; break;
} }
} /* end afscm_aemap() */ }
/*****************************************************************************/
/* /*
* start the cache manager service if not already started * start the cache manager service if not already started
*/ */
@ -316,18 +308,16 @@ int afscm_start(void)
return 0; return 0;
kill: kill:
kafscmd_die = 1; kafscmd_die = 1;
wake_up(&kafscmd_sleepq); wake_up(&kafscmd_sleepq);
wait_for_completion(&kafscmd_dead); wait_for_completion(&kafscmd_dead);
out: out:
up_write(&afscm_sem); up_write(&afscm_sem);
return ret; return ret;
}
} /* end afscm_start() */
/*****************************************************************************/
/* /*
* stop the cache manager service * stop the cache manager service
*/ */
@ -394,10 +384,8 @@ void afscm_stop(void)
} }
up_write(&afscm_sem); up_write(&afscm_sem);
}
} /* end afscm_stop() */
/*****************************************************************************/
/* /*
* handle the fileserver breaking a set of callbacks * handle the fileserver breaking a set of callbacks
*/ */
@ -460,8 +448,7 @@ static void _SRXAFSCM_CallBack(struct rxrpc_call *call)
pcb->version = ntohl(*bp++); pcb->version = ntohl(*bp++);
pcb->expiry = ntohl(*bp++); pcb->expiry = ntohl(*bp++);
pcb->type = ntohl(*bp++); pcb->type = ntohl(*bp++);
} } else {
else {
pcb->version = 0; pcb->version = 0;
pcb->expiry = 0; pcb->expiry = 0;
pcb->type = AFSCM_CB_UNTYPED; pcb->type = AFSCM_CB_UNTYPED;
@ -512,10 +499,8 @@ static void _SRXAFSCM_CallBack(struct rxrpc_call *call)
afs_put_server(server); afs_put_server(server);
_leave(" = %d", ret); _leave(" = %d", ret);
}
} /* end _SRXAFSCM_CallBack() */
/*****************************************************************************/
/* /*
* handle the fileserver asking us to initialise our callback state * handle the fileserver asking us to initialise our callback state
*/ */
@ -580,10 +565,8 @@ static void _SRXAFSCM_InitCallBackState(struct rxrpc_call *call)
afs_put_server(server); afs_put_server(server);
_leave(" = %d", ret); _leave(" = %d", ret);
}
} /* end _SRXAFSCM_InitCallBackState() */
/*****************************************************************************/
/* /*
* handle a probe from a fileserver * handle a probe from a fileserver
*/ */
@ -648,5 +631,4 @@ static void _SRXAFSCM_Probe(struct rxrpc_call *call)
afs_put_server(server); afs_put_server(server);
_leave(" = %d", ret); _leave(" = %d", ret);
}
} /* end _SRXAFSCM_Probe() */

17
fs/afs/cmservice.h
View File

@ -1,4 +1,4 @@
/* cmservice.h: AFS Cache Manager Service declarations /* AFS Cache Manager Service declarations
* *
* Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com) * Written by David Howells (dhowells@redhat.com)
@ -9,8 +9,8 @@
* 2 of the License, or (at your option) any later version. * 2 of the License, or (at your option) any later version.
*/ */
#ifndef _LINUX_AFS_CMSERVICE_H #ifndef AFS_CMSERVICE_H
#define _LINUX_AFS_CMSERVICE_H #define AFS_CMSERVICE_H
#include <rxrpc/transport.h> #include <rxrpc/transport.h>
#include "types.h" #include "types.h"
@ -20,10 +20,9 @@ extern int afscm_start(void);
extern void afscm_stop(void); extern void afscm_stop(void);
/* cache manager server functions */ /* cache manager server functions */
extern int SRXAFSCM_InitCallBackState(struct afs_server *server); extern int SRXAFSCM_InitCallBackState(struct afs_server *);
extern int SRXAFSCM_CallBack(struct afs_server *server, extern int SRXAFSCM_CallBack(struct afs_server *, size_t,
size_t count, struct afs_callback[]);
struct afs_callback callbacks[]); extern int SRXAFSCM_Probe(struct afs_server *);
extern int SRXAFSCM_Probe(struct afs_server *server);
#endif /* _LINUX_AFS_CMSERVICE_H */ #endif /* AFS_CMSERVICE_H */

50
fs/afs/dir.c
View File

@ -112,7 +112,6 @@ struct afs_dir_lookup_cookie {
int found; int found;
}; };
/*****************************************************************************/
/* /*
* check that a directory page is valid * check that a directory page is valid
*/ */
@ -157,13 +156,11 @@ static inline void afs_dir_check_page(struct inode *dir, struct page *page)
SetPageChecked(page); SetPageChecked(page);
return; return;
error: error:
SetPageChecked(page); SetPageChecked(page);
SetPageError(page); SetPageError(page);
}
} /* end afs_dir_check_page() */
/*****************************************************************************/
/* /*
* discard a page cached in the pagecache * discard a page cached in the pagecache
*/ */
@ -171,10 +168,8 @@ static inline void afs_dir_put_page(struct page *page)
{ {
kunmap(page); kunmap(page);
page_cache_release(page); page_cache_release(page);
}
} /* end afs_dir_put_page() */
/*****************************************************************************/
/* /*
* get a page into the pagecache * get a page into the pagecache
*/ */
@ -197,12 +192,11 @@ static struct page *afs_dir_get_page(struct inode *dir, unsigned long index)
} }
return page; return page;
fail: fail:
afs_dir_put_page(page); afs_dir_put_page(page);
return ERR_PTR(-EIO); return ERR_PTR(-EIO);
} /* end afs_dir_get_page() */ }
/*****************************************************************************/
/* /*
* open an AFS directory file * open an AFS directory file
*/ */
@ -218,10 +212,8 @@ static int afs_dir_open(struct inode *inode, struct file *file)
_leave(" = 0"); _leave(" = 0");
return 0; return 0;
}
} /* end afs_dir_open() */
/*****************************************************************************/
/* /*
* deal with one block in an AFS directory * deal with one block in an AFS directory
*/ */
@ -316,9 +308,8 @@ static int afs_dir_iterate_block(unsigned *fpos,
_leave(" = 1 [more]"); _leave(" = 1 [more]");
return 1; return 1;
} /* end afs_dir_iterate_block() */ }
/*****************************************************************************/
/* /*
* read an AFS directory * read an AFS directory
*/ */
@ -377,12 +368,11 @@ static int afs_dir_iterate(struct inode *dir, unsigned *fpos, void *cookie,
ret = 0; ret = 0;
} }
out: out:
_leave(" = %d", ret); _leave(" = %d", ret);
return ret; return ret;
} /* end afs_dir_iterate() */ }
/*****************************************************************************/
/* /*
* read an AFS directory * read an AFS directory
*/ */
@ -399,9 +389,8 @@ static int afs_dir_readdir(struct file *file, void *cookie, filldir_t filldir)
_leave(" = %d", ret); _leave(" = %d", ret);
return ret; return ret;
} /* end afs_dir_readdir() */ }
/*****************************************************************************/
/* /*
* search the directory for a name * search the directory for a name
* - if afs_dir_iterate_block() spots this function, it'll pass the FID * - if afs_dir_iterate_block() spots this function, it'll pass the FID
@ -426,9 +415,8 @@ static int afs_dir_lookup_filldir(void *_cookie, const char *name, int nlen,
_leave(" = -1 [found]"); _leave(" = -1 [found]");
return -1; return -1;
} /* end afs_dir_lookup_filldir() */ }
/*****************************************************************************/
/* /*
* look up an entry in a directory * look up an entry in a directory
*/ */
@ -498,9 +486,8 @@ static struct dentry *afs_dir_lookup(struct inode *dir, struct dentry *dentry,
dentry->d_inode->i_version); dentry->d_inode->i_version);
return NULL; return NULL;
} /* end afs_dir_lookup() */ }
/*****************************************************************************/
/* /*
* check that a dentry lookup hit has found a valid entry * check that a dentry lookup hit has found a valid entry
* - NOTE! the hit can be a negative hit too, so we can't assume we have an * - NOTE! the hit can be a negative hit too, so we can't assume we have an
@ -605,18 +592,18 @@ static int afs_d_revalidate(struct dentry *dentry, struct nameidata *nd)
(void *) (unsigned long) AFS_FS_I(dir)->status.version; (void *) (unsigned long) AFS_FS_I(dir)->status.version;
} }
out_valid: out_valid:
dput(parent); dput(parent);
_leave(" = 1 [valid]"); _leave(" = 1 [valid]");
return 1; return 1;
/* the dirent, if it exists, now points to a different vnode */ /* the dirent, if it exists, now points to a different vnode */
not_found: not_found:
spin_lock(&dentry->d_lock); spin_lock(&dentry->d_lock);
dentry->d_flags |= DCACHE_NFSFS_RENAMED; dentry->d_flags |= DCACHE_NFSFS_RENAMED;
spin_unlock(&dentry->d_lock); spin_unlock(&dentry->d_lock);
out_bad: out_bad:
if (inode) { if (inode) {
/* don't unhash if we have submounts */ /* don't unhash if we have submounts */
if (have_submounts(dentry)) if (have_submounts(dentry))
@ -633,9 +620,8 @@ static int afs_d_revalidate(struct dentry *dentry, struct nameidata *nd)
_leave(" = 0 [bad]"); _leave(" = 0 [bad]");
return 0; return 0;
} /* end afs_d_revalidate() */ }
/*****************************************************************************/
/* /*
* allow the VFS to enquire as to whether a dentry should be unhashed (mustn't * allow the VFS to enquire as to whether a dentry should be unhashed (mustn't
* sleep) * sleep)
@ -657,7 +643,7 @@ static int afs_d_delete(struct dentry *dentry)
_leave(" = 0 [keep]"); _leave(" = 0 [keep]");
return 0; return 0;
zap: zap:
_leave(" = 1 [zap]"); _leave(" = 1 [zap]");
return 1; return 1;
} /* end afs_d_delete() */ }

14
fs/afs/errors.h
View File

@ -1,4 +1,4 @@
/* errors.h: AFS abort/error codes /* AFS abort/error codes
* *
* Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com) * Written by David Howells (dhowells@redhat.com)
@ -9,12 +9,14 @@
* 2 of the License, or (at your option) any later version. * 2 of the License, or (at your option) any later version.
*/ */
#ifndef _LINUX_AFS_ERRORS_H #ifndef AFS_ERRORS_H
#define _LINUX_AFS_ERRORS_H #define AFS_ERRORS_H
#include "types.h" #include "types.h"
/* file server abort codes */ /*
* file server abort codes
*/
typedef enum { typedef enum {
VSALVAGE = 101, /* volume needs salvaging */ VSALVAGE = 101, /* volume needs salvaging */
VNOVNODE = 102, /* no such file/dir (vnode) */ VNOVNODE = 102, /* no such file/dir (vnode) */
@ -29,6 +31,6 @@ typedef enum {
VMOVED = 111, /* volume moved to new server - ask this FS where */ VMOVED = 111, /* volume moved to new server - ask this FS where */
} afs_rxfs_abort_t; } afs_rxfs_abort_t;
extern int afs_abort_to_error(int abortcode); extern int afs_abort_to_error(int);
#endif /* _LINUX_AFS_ERRORS_H */ #endif /* AFS_ERRORS_H */

20
fs/afs/file.c
View File

@ -40,7 +40,6 @@ const struct address_space_operations afs_fs_aops = {
.invalidatepage = afs_file_invalidatepage, .invalidatepage = afs_file_invalidatepage,
}; };
/*****************************************************************************/
/* /*
* deal with notification that a page was read from the cache * deal with notification that a page was read from the cache
*/ */
@ -58,10 +57,9 @@ static void afs_file_readpage_read_complete(void *cookie_data,
SetPageUptodate(page); SetPageUptodate(page);
unlock_page(page); unlock_page(page);
} /* end afs_file_readpage_read_complete() */ }
#endif #endif
/*****************************************************************************/
/* /*
* deal with notification that a page was written to the cache * deal with notification that a page was written to the cache
*/ */
@ -74,11 +72,9 @@ static void afs_file_readpage_write_complete(void *cookie_data,
_enter("%p,%p,%p,%d", cookie_data, page, data, error); _enter("%p,%p,%p,%d", cookie_data, page, data, error);
unlock_page(page); unlock_page(page);
}
} /* end afs_file_readpage_write_complete() */
#endif #endif
/*****************************************************************************/
/* /*
* AFS read page from file (or symlink) * AFS read page from file (or symlink)
*/ */
@ -184,10 +180,8 @@ static int afs_file_readpage(struct file *file, struct page *page)
_leave(" = %d", ret); _leave(" = %d", ret);
return ret; return ret;
}
} /* end afs_file_readpage() */
/*****************************************************************************/
/* /*
* get a page cookie for the specified page * get a page cookie for the specified page
*/ */
@ -202,10 +196,9 @@ int afs_cache_get_page_cookie(struct page *page,
_leave(" = %d", ret); _leave(" = %d", ret);
return ret; return ret;
} /* end afs_cache_get_page_cookie() */ }
#endif #endif
/*****************************************************************************/
/* /*
* invalidate part or all of a page * invalidate part or all of a page
*/ */
@ -240,9 +233,8 @@ static void afs_file_invalidatepage(struct page *page, unsigned long offset)
} }
_leave(" = %d", ret); _leave(" = %d", ret);
} /* end afs_file_invalidatepage() */ }
/*****************************************************************************/
/* /*
* release a page and cleanup its private data * release a page and cleanup its private data
*/ */
@ -267,4 +259,4 @@ static int afs_file_releasepage(struct page *page, gfp_t gfp_flags)
_leave(" = 0"); _leave(" = 0");
return 0; return 0;
} /* end afs_file_releasepage() */ }

73
fs/afs/fsclient.c
View File

@ -29,7 +29,6 @@
#define FSGETROOTVOLUME 151 /* AFS Get root volume name */ #define FSGETROOTVOLUME 151 /* AFS Get root volume name */
#define FSLOOKUP 161 /* AFS lookup file in directory */ #define FSLOOKUP 161 /* AFS lookup file in directory */
/*****************************************************************************/
/* /*
* map afs abort codes to/from Linux error codes * map afs abort codes to/from Linux error codes
* - called with call->lock held * - called with call->lock held
@ -46,9 +45,8 @@ static void afs_rxfs_aemap(struct rxrpc_call *call)
default: default:
break; break;
} }
} /* end afs_rxfs_aemap() */ }
/*****************************************************************************/
/* /*
* get the root volume name from a fileserver * get the root volume name from a fileserver
* - this operation doesn't seem to work correctly in OpenAFS server 1.2.2 * - this operation doesn't seem to work correctly in OpenAFS server 1.2.2
@ -162,23 +160,22 @@ int afs_rxfs_get_root_volume(struct afs_server *server,
BUG(); BUG();
} }
abort: abort:
set_current_state(TASK_UNINTERRUPTIBLE); set_current_state(TASK_UNINTERRUPTIBLE);
rxrpc_call_abort(call, ret); rxrpc_call_abort(call, ret);
schedule(); schedule();
out_unwait: out_unwait:
set_current_state(TASK_RUNNING); set_current_state(TASK_RUNNING);
remove_wait_queue(&call->waitq, &myself); remove_wait_queue(&call->waitq, &myself);
rxrpc_put_call(call); rxrpc_put_call(call);
out_put_conn: out_put_conn:
afs_server_release_fsconn(server, conn); afs_server_release_fsconn(server, conn);
out: out:
kleave(""); kleave("");
return ret; return ret;
} /* end afs_rxfs_get_root_volume() */ }
#endif #endif
/*****************************************************************************/
/* /*
* get information about a volume * get information about a volume
*/ */
@ -275,26 +272,24 @@ int afs_rxfs_get_volume_info(struct afs_server *server,
/* success */ /* success */
ret = 0; ret = 0;
out_unwait: out_unwait:
set_current_state(TASK_RUNNING); set_current_state(TASK_RUNNING);
remove_wait_queue(&call->waitq, &myself); remove_wait_queue(&call->waitq, &myself);
rxrpc_put_call(call); rxrpc_put_call(call);
out_put_conn: out_put_conn:
afs_server_release_fsconn(server, conn); afs_server_release_fsconn(server, conn);
out: out:
_leave(""); _leave("");
return ret; return ret;
abort: abort:
set_current_state(TASK_UNINTERRUPTIBLE); set_current_state(TASK_UNINTERRUPTIBLE);
rxrpc_call_abort(call, ret); rxrpc_call_abort(call, ret);
schedule(); schedule();
goto out_unwait; goto out_unwait;
}
} /* end afs_rxfs_get_volume_info() */
#endif #endif
/*****************************************************************************/
/* /*
* fetch the status information for a file * fetch the status information for a file
*/ */
@ -401,24 +396,23 @@ int afs_rxfs_fetch_file_status(struct afs_server *server,
/* success */ /* success */
ret = 0; ret = 0;
out_unwait: out_unwait:
set_current_state(TASK_RUNNING); set_current_state(TASK_RUNNING);
remove_wait_queue(&call->waitq, &myself); remove_wait_queue(&call->waitq, &myself);
rxrpc_put_call(call); rxrpc_put_call(call);
out_put_conn: out_put_conn:
afs_server_release_callslot(server, &callslot); afs_server_release_callslot(server, &callslot);
out: out:
_leave(""); _leave("");
return ret; return ret;
abort: abort:
set_current_state(TASK_UNINTERRUPTIBLE); set_current_state(TASK_UNINTERRUPTIBLE);
rxrpc_call_abort(call, ret); rxrpc_call_abort(call, ret);
schedule(); schedule();
goto out_unwait; goto out_unwait;
} /* end afs_rxfs_fetch_file_status() */ }
/*****************************************************************************/
/* /*
* fetch the contents of a file or directory * fetch the contents of a file or directory
*/ */
@ -547,31 +541,29 @@ int afs_rxfs_fetch_file_data(struct afs_server *server,
/* success */ /* success */
ret = 0; ret = 0;
out_unwait: out_unwait:
set_current_state(TASK_RUNNING); set_current_state(TASK_RUNNING);
remove_wait_queue(&call->waitq,&myself); remove_wait_queue(&call->waitq,&myself);
rxrpc_put_call(call); rxrpc_put_call(call);
out_put_conn: out_put_conn:
afs_server_release_callslot(server, &callslot); afs_server_release_callslot(server, &callslot);
out: out:
_leave(" = %d", ret); _leave(" = %d", ret);
return ret; return ret;
read_failed: read_failed:
if (ret == -ECONNABORTED) { if (ret == -ECONNABORTED) {
ret = call->app_errno; ret = call->app_errno;
goto out_unwait; goto out_unwait;
} }
abort: abort:
set_current_state(TASK_UNINTERRUPTIBLE); set_current_state(TASK_UNINTERRUPTIBLE);
rxrpc_call_abort(call, ret); rxrpc_call_abort(call, ret);
schedule(); schedule();
goto out_unwait; goto out_unwait;
}
} /* end afs_rxfs_fetch_file_data() */
/*****************************************************************************/
/* /*
* ask the AFS fileserver to discard a callback request on a file * ask the AFS fileserver to discard a callback request on a file
*/ */
@ -655,24 +647,23 @@ int afs_rxfs_give_up_callback(struct afs_server *server,
BUG(); BUG();
} }
out_unwait: out_unwait:
set_current_state(TASK_RUNNING); set_current_state(TASK_RUNNING);
remove_wait_queue(&call->waitq, &myself); remove_wait_queue(&call->waitq, &myself);
rxrpc_put_call(call); rxrpc_put_call(call);
out_put_conn: out_put_conn:
afs_server_release_callslot(server, &callslot); afs_server_release_callslot(server, &callslot);
out: out:
_leave(""); _leave("");
return ret; return ret;
abort: abort:
set_current_state(TASK_UNINTERRUPTIBLE); set_current_state(TASK_UNINTERRUPTIBLE);
rxrpc_call_abort(call, ret); rxrpc_call_abort(call, ret);
schedule(); schedule();
goto out_unwait; goto out_unwait;
} /* end afs_rxfs_give_up_callback() */ }
/*****************************************************************************/
/* /*
* look a filename up in a directory * look a filename up in a directory
* - this operation doesn't seem to work correctly in OpenAFS server 1.2.2 * - this operation doesn't seem to work correctly in OpenAFS server 1.2.2
@ -818,20 +809,20 @@ int afs_rxfs_lookup(struct afs_server *server,
/* success */ /* success */
ret = 0; ret = 0;
out_unwait: out_unwait:
set_current_state(TASK_RUNNING); set_current_state(TASK_RUNNING);
remove_wait_queue(&call->waitq, &myself); remove_wait_queue(&call->waitq, &myself);
rxrpc_put_call(call); rxrpc_put_call(call);
out_put_conn: out_put_conn:
afs_server_release_fsconn(server, conn); afs_server_release_fsconn(server, conn);
out: out:
kleave(""); kleave("");
return ret; return ret;
abort: abort:
set_current_state(TASK_UNINTERRUPTIBLE); set_current_state(TASK_UNINTERRUPTIBLE);
rxrpc_call_abort(call, ret); rxrpc_call_abort(call, ret);
schedule(); schedule();
goto out_unwait; goto out_unwait;
} /* end afs_rxfs_lookup() */ }
#endif #endif

48
fs/afs/fsclient.h
View File

@ -1,4 +1,4 @@
/* fsclient.h: AFS File Server client stub declarations /* AFS File Server client stub declarations
* *
* Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com) * Written by David Howells (dhowells@redhat.com)
@ -9,18 +9,18 @@
* 2 of the License, or (at your option) any later version. * 2 of the License, or (at your option) any later version.
*/ */
#ifndef _LINUX_AFS_FSCLIENT_H #ifndef AFS_FSCLIENT_H
#define _LINUX_AFS_FSCLIENT_H #define AFS_FSCLIENT_H
#include "server.h" #include "server.h"
extern int afs_rxfs_get_volume_info(struct afs_server *server, extern int afs_rxfs_get_volume_info(struct afs_server *,
const char *name, const char *,
struct afs_volume_info *vinfo); struct afs_volume_info *);
extern int afs_rxfs_fetch_file_status(struct afs_server *server, extern int afs_rxfs_fetch_file_status(struct afs_server *,
struct afs_vnode *vnode, struct afs_vnode *,
struct afs_volsync *volsync); struct afs_volsync *);
struct afs_rxfs_fetch_descriptor { struct afs_rxfs_fetch_descriptor {
struct afs_fid fid; /* file ID to fetch */ struct afs_fid fid; /* file ID to fetch */
@ -30,25 +30,25 @@ struct afs_rxfs_fetch_descriptor {
size_t actual; /* actual size sent back by server */ size_t actual; /* actual size sent back by server */
}; };
extern int afs_rxfs_fetch_file_data(struct afs_server *server, extern int afs_rxfs_fetch_file_data(struct afs_server *,
struct afs_vnode *vnode, struct afs_vnode *,
struct afs_rxfs_fetch_descriptor *desc, struct afs_rxfs_fetch_descriptor *,
struct afs_volsync *volsync); struct afs_volsync *);
extern int afs_rxfs_give_up_callback(struct afs_server *server, extern int afs_rxfs_give_up_callback(struct afs_server *,
struct afs_vnode *vnode); struct afs_vnode *);
/* this doesn't appear to work in OpenAFS server */ /* this doesn't appear to work in OpenAFS server */
extern int afs_rxfs_lookup(struct afs_server *server, extern int afs_rxfs_lookup(struct afs_server *,
struct afs_vnode *dir, struct afs_vnode *,
const char *filename, const char *,
struct afs_vnode *vnode, struct afs_vnode *,
struct afs_volsync *volsync); struct afs_volsync *);
/* this is apparently mis-implemented in OpenAFS server */ /* this is apparently mis-implemented in OpenAFS server */
extern int afs_rxfs_get_root_volume(struct afs_server *server, extern int afs_rxfs_get_root_volume(struct afs_server *,
char *buf, char *,
size_t *buflen); size_t *);
#endif /* _LINUX_AFS_FSCLIENT_H */ #endif /* AFS_FSCLIENT_H */

29
fs/afs/inode.c
View File

@ -29,7 +29,6 @@ struct afs_iget_data {
struct afs_volume *volume; /* volume on which resides */ struct afs_volume *volume; /* volume on which resides */
}; };
/*****************************************************************************/
/* /*
* map the AFS file status to the inode member variables * map the AFS file status to the inode member variables
*/ */
@ -87,9 +86,8 @@ static int afs_inode_map_status(struct afs_vnode *vnode)
} }
return 0; return 0;
} /* end afs_inode_map_status() */ }
/*****************************************************************************/
/* /*
* attempt to fetch the status of an inode, coelescing multiple simultaneous * attempt to fetch the status of an inode, coelescing multiple simultaneous
* fetches * fetches
@ -107,10 +105,8 @@ static int afs_inode_fetch_status(struct inode *inode)
ret = afs_inode_map_status(vnode); ret = afs_inode_map_status(vnode);
return ret; return ret;
}
} /* end afs_inode_fetch_status() */
/*****************************************************************************/
/* /*
* iget5() comparator * iget5() comparator
*/ */
@ -120,9 +116,8 @@ static int afs_iget5_test(struct inode *inode, void *opaque)
return inode->i_ino == data->fid.vnode && return inode->i_ino == data->fid.vnode &&
inode->i_version == data->fid.unique; inode->i_version == data->fid.unique;
} /* end afs_iget5_test() */ }
/*****************************************************************************/
/* /*
* iget5() inode initialiser * iget5() inode initialiser
*/ */
@ -137,9 +132,8 @@ static int afs_iget5_set(struct inode *inode, void *opaque)
vnode->volume = data->volume; vnode->volume = data->volume;
return 0; return 0;
} /* end afs_iget5_set() */ }
/*****************************************************************************/
/* /*
* inode retrieval * inode retrieval
*/ */
@ -169,7 +163,7 @@ inline int afs_iget(struct super_block *sb, struct afs_fid *fid,
/* deal with an existing inode */ /* deal with an existing inode */
if (!(inode->i_state & I_NEW)) { if (!(inode->i_state & I_NEW)) {
ret = afs_vnode_fetch_status(vnode); ret = afs_vnode_fetch_status(vnode);
if (ret==0) if (ret == 0)
*_inode = inode; *_inode = inode;
else else
iput(inode); iput(inode);
@ -204,16 +198,15 @@ inline int afs_iget(struct super_block *sb, struct afs_fid *fid,
return 0; return 0;
/* failure */ /* failure */
bad_inode: bad_inode:
make_bad_inode(inode); make_bad_inode(inode);
unlock_new_inode(inode); unlock_new_inode(inode);
iput(inode); iput(inode);
_leave(" = %d [bad]", ret); _leave(" = %d [bad]", ret);
return ret; return ret;
} /* end afs_iget() */ }
/*****************************************************************************/
/* /*
* read the attributes of an inode * read the attributes of an inode
*/ */
@ -235,8 +228,7 @@ int afs_inode_getattr(struct vfsmount *mnt, struct dentry *dentry,
_leave(" = %d [%d %p]", _leave(" = %d [%d %p]",
ret, atomic_read(&dentry->d_count), dentry->d_inode); ret, atomic_read(&dentry->d_count), dentry->d_inode);
return ret; return ret;
} } else if (ret < 0) {
else if (ret < 0) {
make_bad_inode(inode); make_bad_inode(inode);
_leave(" = %d", ret); _leave(" = %d", ret);
return ret; return ret;
@ -252,9 +244,8 @@ int afs_inode_getattr(struct vfsmount *mnt, struct dentry *dentry,
vnode->cb_type); vnode->cb_type);
return 0; return 0;
} /* end afs_inode_getattr() */ }
/*****************************************************************************/
/* /*
* clear an AFS inode * clear an AFS inode
*/ */
@ -282,4 +273,4 @@ void afs_clear_inode(struct inode *inode)
#endif #endif
_leave(""); _leave("");
} /* end afs_clear_inode() */ }

36
fs/afs/internal.h
View File

@ -1,4 +1,4 @@
/* internal.h: internal AFS stuff /* internal AFS stuff
* *
* Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com) * Written by David Howells (dhowells@redhat.com)
@ -73,26 +73,16 @@ extern const struct address_space_operations afs_fs_aops;
extern const struct inode_operations afs_file_inode_operations; extern const struct inode_operations afs_file_inode_operations;
#ifdef AFS_CACHING_SUPPORT #ifdef AFS_CACHING_SUPPORT
extern int afs_cache_get_page_cookie(struct page *page, extern int afs_cache_get_page_cookie(struct page *, struct cachefs_page **);
struct cachefs_page **_page_cookie);
#endif #endif
/* /*
* inode.c * inode.c
*/ */
extern int afs_iget(struct super_block *sb, struct afs_fid *fid, extern int afs_iget(struct super_block *, struct afs_fid *, struct inode **);
struct inode **_inode); extern int afs_inode_getattr(struct vfsmount *, struct dentry *,
extern int afs_inode_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *);
struct kstat *stat); extern void afs_clear_inode(struct inode *);
extern void afs_clear_inode(struct inode *inode);
/*
* key_afs.c
*/
#ifdef CONFIG_KEYS
extern int afs_key_register(void);
extern void afs_key_unregister(void);
#endif
/* /*
* main.c * main.c
@ -110,7 +100,7 @@ extern struct afs_timer afs_mntpt_expiry_timer;
extern struct afs_timer_ops afs_mntpt_expiry_timer_ops; extern struct afs_timer_ops afs_mntpt_expiry_timer_ops;
extern unsigned long afs_mntpt_expiry_timeout; extern unsigned long afs_mntpt_expiry_timeout;
extern int afs_mntpt_check_symlink(struct afs_vnode *vnode); extern int afs_mntpt_check_symlink(struct afs_vnode *);
/* /*
* super.c * super.c
@ -123,17 +113,17 @@ extern void afs_fs_exit(void);
extern struct list_head afs_cb_hash_tbl[]; extern struct list_head afs_cb_hash_tbl[];
extern spinlock_t afs_cb_hash_lock; extern spinlock_t afs_cb_hash_lock;
#define afs_cb_hash(SRV,FID) \ #define afs_cb_hash(SRV, FID) \
afs_cb_hash_tbl[((unsigned long)(SRV) + \ afs_cb_hash_tbl[((unsigned long)(SRV) + \
(FID)->vid + (FID)->vnode + (FID)->unique) % \ (FID)->vid + (FID)->vnode + (FID)->unique) & \
AFS_CB_HASH_COUNT] (AFS_CB_HASH_COUNT - 1)]
/* /*
* proc.c * proc.c
*/ */
extern int afs_proc_init(void); extern int afs_proc_init(void);
extern void afs_proc_cleanup(void); extern void afs_proc_cleanup(void);
extern int afs_proc_cell_setup(struct afs_cell *cell); extern int afs_proc_cell_setup(struct afs_cell *);
extern void afs_proc_cell_remove(struct afs_cell *cell); extern void afs_proc_cell_remove(struct afs_cell *);
#endif /* AFS_INTERNAL_H */ #endif /* AFS_INTERNAL_H */

22
fs/afs/kafsasyncd.c
View File

@ -1,4 +1,4 @@
/* kafsasyncd.c: AFS asynchronous operation daemon /* AFS asynchronous operation daemon
* *
* Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com) * Written by David Howells (dhowells@redhat.com)
@ -50,7 +50,6 @@ static void kafsasyncd_null_call_error_func(struct rxrpc_call *call)
{ {
} }
/*****************************************************************************/
/* /*
* start the async daemon * start the async daemon
*/ */
@ -65,9 +64,8 @@ int afs_kafsasyncd_start(void)
wait_for_completion(&kafsasyncd_alive); wait_for_completion(&kafsasyncd_alive);
return ret; return ret;
} /* end afs_kafsasyncd_start() */ }
/*****************************************************************************/
/* /*
* stop the async daemon * stop the async daemon
*/ */
@ -77,10 +75,8 @@ void afs_kafsasyncd_stop(void)
kafsasyncd_die = 1; kafsasyncd_die = 1;
wake_up(&kafsasyncd_sleepq); wake_up(&kafsasyncd_sleepq);
wait_for_completion(&kafsasyncd_dead); wait_for_completion(&kafsasyncd_dead);
}
} /* end afs_kafsasyncd_stop() */
/*****************************************************************************/
/* /*
* probing daemon * probing daemon
*/ */
@ -187,10 +183,8 @@ static int kafsasyncd(void *arg)
/* and that's all */ /* and that's all */
_leave(""); _leave("");
complete_and_exit(&kafsasyncd_dead, 0); complete_and_exit(&kafsasyncd_dead, 0);
}
} /* end kafsasyncd() */
/*****************************************************************************/
/* /*
* begin an operation * begin an operation
* - place operation on busy queue * - place operation on busy queue
@ -209,9 +203,8 @@ void afs_kafsasyncd_begin_op(struct afs_async_op *op)
spin_unlock(&kafsasyncd_async_lock); spin_unlock(&kafsasyncd_async_lock);
_leave(""); _leave("");
} /* end afs_kafsasyncd_begin_op() */ }
/*****************************************************************************/
/* /*
* request attention for an operation * request attention for an operation
* - move to attention queue * - move to attention queue
@ -229,9 +222,8 @@ void afs_kafsasyncd_attend_op(struct afs_async_op *op)
wake_up(&kafsasyncd_sleepq); wake_up(&kafsasyncd_sleepq);
_leave(""); _leave("");
} /* end afs_kafsasyncd_attend_op() */ }
/*****************************************************************************/
/* /*
* terminate an operation * terminate an operation
* - remove from either queue * - remove from either queue
@ -252,4 +244,4 @@ void afs_kafsasyncd_terminate_op(struct afs_async_op *op)
wake_up(&kafsasyncd_sleepq); wake_up(&kafsasyncd_sleepq);
_leave(""); _leave("");
} /* end afs_kafsasyncd_terminate_op() */ }

22
fs/afs/kafsasyncd.h
View File

@ -1,4 +1,4 @@
/* kafsasyncd.h: AFS asynchronous operation daemon /* AFS asynchronous operation daemon
* *
* Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com) * Written by David Howells (dhowells@redhat.com)
@ -9,24 +9,22 @@
* 2 of the License, or (at your option) any later version. * 2 of the License, or (at your option) any later version.
*/ */
#ifndef _LINUX_AFS_KAFSASYNCD_H #ifndef AFS_KAFSASYNCD_H
#define _LINUX_AFS_KAFSASYNCD_H #define AFS_KAFSASYNCD_H
#include "types.h" #include "types.h"
struct afs_async_op; struct afs_async_op;
struct afs_async_op_ops { struct afs_async_op_ops {
void (*attend)(struct afs_async_op *op); void (*attend)(struct afs_async_op *);
void (*discard)(struct afs_async_op *op); void (*discard)(struct afs_async_op *);
}; };
/*****************************************************************************/
/* /*
* asynchronous operation record * asynchronous operation record
*/ */
struct afs_async_op struct afs_async_op {
{
struct list_head link; struct list_head link;
struct afs_server *server; /* server being contacted */ struct afs_server *server; /* server being contacted */
struct rxrpc_call *call; /* RxRPC call performing op */ struct rxrpc_call *call; /* RxRPC call performing op */
@ -45,8 +43,8 @@ static inline void afs_async_op_init(struct afs_async_op *op,
extern int afs_kafsasyncd_start(void); extern int afs_kafsasyncd_start(void);
extern void afs_kafsasyncd_stop(void); extern void afs_kafsasyncd_stop(void);
extern void afs_kafsasyncd_begin_op(struct afs_async_op *op); extern void afs_kafsasyncd_begin_op(struct afs_async_op *);
extern void afs_kafsasyncd_attend_op(struct afs_async_op *op); extern void afs_kafsasyncd_attend_op(struct afs_async_op *);
extern void afs_kafsasyncd_terminate_op(struct afs_async_op *op); extern void afs_kafsasyncd_terminate_op(struct afs_async_op *);
#endif /* _LINUX_AFS_KAFSASYNCD_H */ #endif /* AFS_KAFSASYNCD_H */

31
fs/afs/kafstimod.c
View File

@ -1,4 +1,4 @@
/* kafstimod.c: AFS timeout daemon /* AFS timeout daemon
* *
* Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com) * Written by David Howells (dhowells@redhat.com)
@ -30,7 +30,6 @@ static DEFINE_SPINLOCK(kafstimod_lock);
static int kafstimod(void *arg); static int kafstimod(void *arg);
/*****************************************************************************/
/* /*
* start the timeout daemon * start the timeout daemon
*/ */
@ -45,9 +44,8 @@ int afs_kafstimod_start(void)
wait_for_completion(&kafstimod_alive); wait_for_completion(&kafstimod_alive);
return ret; return ret;
} /* end afs_kafstimod_start() */ }
/*****************************************************************************/
/* /*
* stop the timeout daemon * stop the timeout daemon
*/ */
@ -57,10 +55,8 @@ void afs_kafstimod_stop(void)
kafstimod_die = 1; kafstimod_die = 1;
wake_up(&kafstimod_sleepq); wake_up(&kafstimod_sleepq);
wait_for_completion(&kafstimod_dead); wait_for_completion(&kafstimod_dead);
}
} /* end afs_kafstimod_stop() */
/*****************************************************************************/
/* /*
* timeout processing daemon * timeout processing daemon
*/ */
@ -77,7 +73,7 @@ static int kafstimod(void *arg)
complete(&kafstimod_alive); complete(&kafstimod_alive);
/* loop around looking for things to attend to */ /* loop around looking for things to attend to */
loop: loop:
set_current_state(TASK_INTERRUPTIBLE); set_current_state(TASK_INTERRUPTIBLE);
add_wait_queue(&kafstimod_sleepq, &myself); add_wait_queue(&kafstimod_sleepq, &myself);
@ -101,8 +97,7 @@ static int kafstimod(void *arg)
spin_lock(&kafstimod_lock); spin_lock(&kafstimod_lock);
if (list_empty(&kafstimod_list)) { if (list_empty(&kafstimod_list)) {
timeout = MAX_SCHEDULE_TIMEOUT; timeout = MAX_SCHEDULE_TIMEOUT;
} } else {
else {
timer = list_entry(kafstimod_list.next, timer = list_entry(kafstimod_list.next,
struct afs_timer, link); struct afs_timer, link);
timeout = timer->timo_jif; timeout = timer->timo_jif;
@ -110,10 +105,7 @@ static int kafstimod(void *arg)
if (time_before_eq((unsigned long) timeout, jif)) if (time_before_eq((unsigned long) timeout, jif))
goto immediate; goto immediate;
timeout = (long) timeout - (long) jiffies;
else {
timeout = (long) timeout - (long) jiffies;
}
} }
spin_unlock(&kafstimod_lock); spin_unlock(&kafstimod_lock);
@ -126,7 +118,7 @@ static int kafstimod(void *arg)
* - we come here with the lock held and timer pointing to the expired * - we come here with the lock held and timer pointing to the expired
* entry * entry
*/ */
immediate: immediate:
remove_wait_queue(&kafstimod_sleepq, &myself); remove_wait_queue(&kafstimod_sleepq, &myself);
set_current_state(TASK_RUNNING); set_current_state(TASK_RUNNING);
@ -141,10 +133,8 @@ static int kafstimod(void *arg)
_debug("@@@ End Timeout"); _debug("@@@ End Timeout");
goto loop; goto loop;
}
} /* end kafstimod() */
/*****************************************************************************/
/* /*
* (re-)queue a timer * (re-)queue a timer
*/ */
@ -176,9 +166,8 @@ void afs_kafstimod_add_timer(struct afs_timer *timer, unsigned long timeout)
wake_up(&kafstimod_sleepq); wake_up(&kafstimod_sleepq);
_leave(""); _leave("");
} /* end afs_kafstimod_add_timer() */ }
/*****************************************************************************/
/* /*
* dequeue a timer * dequeue a timer
* - returns 0 if the timer was deleted or -ENOENT if it wasn't queued * - returns 0 if the timer was deleted or -ENOENT if it wasn't queued
@ -202,4 +191,4 @@ int afs_kafstimod_del_timer(struct afs_timer *timer)
_leave(" = %d", ret); _leave(" = %d", ret);
return ret; return ret;
} /* end afs_kafstimod_del_timer() */ }

20
fs/afs/kafstimod.h
View File

@ -1,4 +1,4 @@
/* kafstimod.h: AFS timeout daemon /* AFS timeout daemon
* *
* Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com) * Written by David Howells (dhowells@redhat.com)
@ -9,8 +9,8 @@
* 2 of the License, or (at your option) any later version. * 2 of the License, or (at your option) any later version.
*/ */
#ifndef _LINUX_AFS_KAFSTIMOD_H #ifndef AFS_KAFSTIMOD_H
#define _LINUX_AFS_KAFSTIMOD_H #define AFS_KAFSTIMOD_H
#include "types.h" #include "types.h"
@ -18,15 +18,13 @@ struct afs_timer;
struct afs_timer_ops { struct afs_timer_ops {
/* called when the front of the timer queue has timed out */ /* called when the front of the timer queue has timed out */
void (*timed_out)(struct afs_timer *timer); void (*timed_out)(struct afs_timer *);
}; };
/*****************************************************************************/
/* /*
* AFS timer/timeout record * AFS timer/timeout record
*/ */
struct afs_timer struct afs_timer {
{
struct list_head link; /* link in timer queue */ struct list_head link; /* link in timer queue */
unsigned long timo_jif; /* timeout time */ unsigned long timo_jif; /* timeout time */
const struct afs_timer_ops *ops; /* timeout expiry function */ const struct afs_timer_ops *ops; /* timeout expiry function */
@ -41,9 +39,7 @@ static inline void afs_timer_init(struct afs_timer *timer,
extern int afs_kafstimod_start(void); extern int afs_kafstimod_start(void);
extern void afs_kafstimod_stop(void); extern void afs_kafstimod_stop(void);
extern void afs_kafstimod_add_timer(struct afs_timer *, unsigned long);
extern int afs_kafstimod_del_timer(struct afs_timer *);
extern void afs_kafstimod_add_timer(struct afs_timer *timer, #endif /* AFS_KAFSTIMOD_H */
unsigned long timeout);
extern int afs_kafstimod_del_timer(struct afs_timer *timer);
#endif /* _LINUX_AFS_KAFSTIMOD_H */

94
fs/afs/main.c
View File

@ -1,4 +1,4 @@
/* main.c: AFS client file system /* AFS client file system
* *
* Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com) * Written by David Howells (dhowells@redhat.com)
@ -62,7 +62,6 @@ struct cachefs_netfs afs_cache_netfs = {
}; };
#endif #endif
/*****************************************************************************/
/* /*
* initialise the AFS client FS module * initialise the AFS client FS module
*/ */
@ -86,12 +85,6 @@ static int __init afs_init(void)
/* we want to be able to cache */ /* we want to be able to cache */
ret = cachefs_register_netfs(&afs_cache_netfs, ret = cachefs_register_netfs(&afs_cache_netfs,
&afs_cache_cell_index_def); &afs_cache_cell_index_def);
if (ret < 0)
goto error;
#endif
#ifdef CONFIG_KEYS_TURNED_OFF
ret = afs_key_register();
if (ret < 0) if (ret < 0)
goto error_cache; goto error_cache;
#endif #endif
@ -99,58 +92,55 @@ static int __init afs_init(void)
/* initialise the cell DB */ /* initialise the cell DB */
ret = afs_cell_init(rootcell); ret = afs_cell_init(rootcell);
if (ret < 0) if (ret < 0)
goto error_keys; goto error_cell_init;
/* start the timeout daemon */ /* start the timeout daemon */
ret = afs_kafstimod_start(); ret = afs_kafstimod_start();
if (ret < 0) if (ret < 0)
goto error_keys; goto error_kafstimod;
/* start the async operation daemon */ /* start the async operation daemon */
ret = afs_kafsasyncd_start(); ret = afs_kafsasyncd_start();
if (ret < 0) if (ret < 0)
goto error_kafstimod; goto error_kafsasyncd;
/* create the RxRPC transport */ /* create the RxRPC transport */
ret = rxrpc_create_transport(7001, &afs_transport); ret = rxrpc_create_transport(7001, &afs_transport);
if (ret < 0) if (ret < 0)
goto error_kafsasyncd; goto error_transport;
afs_transport->peer_ops = &afs_peer_ops; afs_transport->peer_ops = &afs_peer_ops;
/* register the filesystems */ /* register the filesystems */
ret = afs_fs_init(); ret = afs_fs_init();
if (ret < 0) if (ret < 0)
goto error_transport; goto error_fs;
return ret; return ret;
error_transport: error_fs:
rxrpc_put_transport(afs_transport); rxrpc_put_transport(afs_transport);
error_kafsasyncd: error_transport:
afs_kafsasyncd_stop(); afs_kafsasyncd_stop();
error_kafstimod: error_kafsasyncd:
afs_kafstimod_stop(); afs_kafstimod_stop();
error_keys: error_kafstimod:
#ifdef CONFIG_KEYS_TURNED_OFF error_cell_init:
afs_key_unregister();
error_cache:
#endif
#ifdef AFS_CACHING_SUPPORT #ifdef AFS_CACHING_SUPPORT
cachefs_unregister_netfs(&afs_cache_netfs); cachefs_unregister_netfs(&afs_cache_netfs);
error: error_cache:
#endif #endif
afs_cell_purge(); afs_cell_purge();
afs_proc_cleanup(); afs_proc_cleanup();
printk(KERN_ERR "kAFS: failed to register: %d\n", ret); printk(KERN_ERR "kAFS: failed to register: %d\n", ret);
return ret; return ret;
} /* end afs_init() */ }
/* XXX late_initcall is kludgy, but the only alternative seems to create /* XXX late_initcall is kludgy, but the only alternative seems to create
* a transport upon the first mount, which is worse. Or is it? * a transport upon the first mount, which is worse. Or is it?
*/ */
late_initcall(afs_init); /* must be called after net/ to create socket */ late_initcall(afs_init); /* must be called after net/ to create socket */
/*****************************************************************************/
/* /*
* clean up on module removal * clean up on module removal
*/ */
@ -163,19 +153,14 @@ static void __exit afs_exit(void)
afs_kafstimod_stop(); afs_kafstimod_stop();
afs_kafsasyncd_stop(); afs_kafsasyncd_stop();
afs_cell_purge(); afs_cell_purge();
#ifdef CONFIG_KEYS_TURNED_OFF
afs_key_unregister();
#endif
#ifdef AFS_CACHING_SUPPORT #ifdef AFS_CACHING_SUPPORT
cachefs_unregister_netfs(&afs_cache_netfs); cachefs_unregister_netfs(&afs_cache_netfs);
#endif #endif
afs_proc_cleanup(); afs_proc_cleanup();
}
} /* end afs_exit() */
module_exit(afs_exit); module_exit(afs_exit);
/*****************************************************************************/
/* /*
* notification that new peer record is being added * notification that new peer record is being added
* - called from krxsecd * - called from krxsecd
@ -208,9 +193,8 @@ static int afs_adding_peer(struct rxrpc_peer *peer)
afs_put_server(server); afs_put_server(server);
return 0; return 0;
} /* end afs_adding_peer() */ }
/*****************************************************************************/
/* /*
* notification that a peer record is being discarded * notification that a peer record is being discarded
* - called from krxiod or krxsecd * - called from krxiod or krxsecd
@ -236,50 +220,4 @@ static void afs_discarding_peer(struct rxrpc_peer *peer)
spin_unlock(&afs_server_peer_lock); spin_unlock(&afs_server_peer_lock);
_leave(""); _leave("");
} /* end afs_discarding_peer() */
/*****************************************************************************/
/*
* clear the dead space between task_struct and kernel stack
* - called by supplying -finstrument-functions to gcc
*/
#if 0
void __cyg_profile_func_enter (void *this_fn, void *call_site)
__attribute__((no_instrument_function));
void __cyg_profile_func_enter (void *this_fn, void *call_site)
{
asm volatile(" movl %%esp,%%edi \n"
" andl %0,%%edi \n"
" addl %1,%%edi \n"
" movl %%esp,%%ecx \n"
" subl %%edi,%%ecx \n"
" shrl $2,%%ecx \n"
" movl $0xedededed,%%eax \n"
" rep stosl \n"
:
: "i"(~(THREAD_SIZE - 1)), "i"(sizeof(struct thread_info))
: "eax", "ecx", "edi", "memory", "cc"
);
} }
void __cyg_profile_func_exit(void *this_fn, void *call_site)
__attribute__((no_instrument_function));
void __cyg_profile_func_exit(void *this_fn, void *call_site)
{
asm volatile(" movl %%esp,%%edi \n"
" andl %0,%%edi \n"
" addl %1,%%edi \n"
" movl %%esp,%%ecx \n"
" subl %%edi,%%ecx \n"
" shrl $2,%%ecx \n"
" movl $0xdadadada,%%eax \n"
" rep stosl \n"
:
: "i"(~(THREAD_SIZE - 1)), "i"(sizeof(struct thread_info))
: "eax", "ecx", "edi", "memory", "cc"
);
}
#endif

6
fs/afs/misc.c
View File

@ -1,4 +1,4 @@
/* misc.c: miscellaneous bits /* miscellaneous bits
* *
* Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com) * Written by David Howells (dhowells@redhat.com)
@ -15,7 +15,6 @@
#include "errors.h" #include "errors.h"
#include "internal.h" #include "internal.h"
/*****************************************************************************/
/* /*
* convert an AFS abort code to a Linux error number * convert an AFS abort code to a Linux error number
*/ */
@ -35,5 +34,4 @@ int afs_abort_to_error(int abortcode)
case VMOVED: return -ENXIO; case VMOVED: return -ENXIO;
default: return -EIO; default: return -EIO;
} }
}
} /* end afs_abort_to_error() */

27
fs/afs/mntpt.c
View File

@ -1,4 +1,4 @@
/* mntpt.c: mountpoint management /* mountpoint management
* *
* Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com) * Written by David Howells (dhowells@redhat.com)
@ -54,7 +54,6 @@ struct afs_timer afs_mntpt_expiry_timer;
unsigned long afs_mntpt_expiry_timeout = 20; unsigned long afs_mntpt_expiry_timeout = 20;
/*****************************************************************************/
/* /*
* check a symbolic link to see whether it actually encodes a mountpoint * check a symbolic link to see whether it actually encodes a mountpoint
* - sets the AFS_VNODE_MOUNTPOINT flag on the vnode appropriately * - sets the AFS_VNODE_MOUNTPOINT flag on the vnode appropriately
@ -99,16 +98,14 @@ int afs_mntpt_check_symlink(struct afs_vnode *vnode)
ret = 0; ret = 0;
out_free: out_free:
kunmap(page); kunmap(page);
page_cache_release(page); page_cache_release(page);
out: out:
_leave(" = %d", ret); _leave(" = %d", ret);
return ret; return ret;
}
} /* end afs_mntpt_check_symlink() */
/*****************************************************************************/
/* /*
* no valid lookup procedure on this sort of dir * no valid lookup procedure on this sort of dir
*/ */
@ -125,9 +122,8 @@ static struct dentry *afs_mntpt_lookup(struct inode *dir,
dentry->d_name.name); dentry->d_name.name);
return ERR_PTR(-EREMOTE); return ERR_PTR(-EREMOTE);
} /* end afs_mntpt_lookup() */ }
/*****************************************************************************/
/* /*
* no valid open procedure on this sort of dir * no valid open procedure on this sort of dir
*/ */
@ -142,9 +138,8 @@ static int afs_mntpt_open(struct inode *inode, struct file *file)
file->f_path.dentry->d_name.name); file->f_path.dentry->d_name.name);
return -EREMOTE; return -EREMOTE;
} /* end afs_mntpt_open() */ }
/*****************************************************************************/
/* /*
* create a vfsmount to be automounted * create a vfsmount to be automounted
*/ */
@ -210,7 +205,7 @@ static struct vfsmount *afs_mntpt_do_automount(struct dentry *mntpt)
kleave(" = %p", mnt); kleave(" = %p", mnt);
return mnt; return mnt;
error: error:
if (page) if (page)
page_cache_release(page); page_cache_release(page);
if (devname) if (devname)
@ -219,9 +214,8 @@ static struct vfsmount *afs_mntpt_do_automount(struct dentry *mntpt)
free_page((unsigned long) options); free_page((unsigned long) options);
kleave(" = %d", ret); kleave(" = %d", ret);
return ERR_PTR(ret); return ERR_PTR(ret);
} /* end afs_mntpt_do_automount() */ }
/*****************************************************************************/
/* /*
* follow a link from a mountpoint directory, thus causing it to be mounted * follow a link from a mountpoint directory, thus causing it to be mounted
*/ */
@ -260,9 +254,8 @@ static void *afs_mntpt_follow_link(struct dentry *dentry, struct nameidata *nd)
kleave(" = %d", err); kleave(" = %d", err);
return ERR_PTR(err); return ERR_PTR(err);
} /* end afs_mntpt_follow_link() */ }
/*****************************************************************************/
/* /*
* handle mountpoint expiry timer going off * handle mountpoint expiry timer going off
*/ */
@ -276,4 +269,4 @@ static void afs_mntpt_expiry_timed_out(struct afs_timer *timer)
afs_mntpt_expiry_timeout * HZ); afs_mntpt_expiry_timeout * HZ);
kleave(""); kleave("");
} /* end afs_mntpt_expiry_timed_out() */ }

8
fs/afs/mount.h
View File

@ -1,4 +1,4 @@
/* mount.h: mount parameters /* mount parameters
* *
* Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com) * Written by David Howells (dhowells@redhat.com)
@ -9,8 +9,8 @@
* 2 of the License, or (at your option) any later version. * 2 of the License, or (at your option) any later version.
*/ */
#ifndef _LINUX_AFS_MOUNT_H #ifndef AFS_MOUNT_H
#define _LINUX_AFS_MOUNT_H #define AFS_MOUNT_H
struct afs_mountdata { struct afs_mountdata {
const char *volume; /* name of volume */ const char *volume; /* name of volume */
@ -20,4 +20,4 @@ struct afs_mountdata {
uint32_t servers[10]; /* IP addresses of servers in this cell */ uint32_t servers[10]; /* IP addresses of servers in this cell */
}; };
#endif /* _LINUX_AFS_MOUNT_H */ #endif /* AFS_MOUNT_H */

161
fs/afs/proc.c
View File

@ -1,4 +1,4 @@
/* proc.c: /proc interface for AFS /* /proc interface for AFS
* *
* Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com) * Written by David Howells (dhowells@redhat.com)
@ -130,7 +130,6 @@ static const struct file_operations afs_proc_cell_servers_fops = {
.release = afs_proc_cell_servers_release, .release = afs_proc_cell_servers_release,
}; };
/*****************************************************************************/
/* /*
* initialise the /proc/fs/afs/ directory * initialise the /proc/fs/afs/ directory
*/ */
@ -142,47 +141,43 @@ int afs_proc_init(void)
proc_afs = proc_mkdir("fs/afs", NULL); proc_afs = proc_mkdir("fs/afs", NULL);
if (!proc_afs) if (!proc_afs)
goto error; goto error_dir;
proc_afs->owner = THIS_MODULE; proc_afs->owner = THIS_MODULE;
p = create_proc_entry("cells", 0, proc_afs); p = create_proc_entry("cells", 0, proc_afs);
if (!p) if (!p)
goto error_proc; goto error_cells;
p->proc_fops = &afs_proc_cells_fops; p->proc_fops = &afs_proc_cells_fops;
p->owner = THIS_MODULE; p->owner = THIS_MODULE;
p = create_proc_entry("rootcell", 0, proc_afs); p = create_proc_entry("rootcell", 0, proc_afs);
if (!p) if (!p)
goto error_cells; goto error_rootcell;
p->proc_fops = &afs_proc_rootcell_fops; p->proc_fops = &afs_proc_rootcell_fops;
p->owner = THIS_MODULE; p->owner = THIS_MODULE;
_leave(" = 0"); _leave(" = 0");
return 0; return 0;
error_cells: error_rootcell:
remove_proc_entry("cells", proc_afs); remove_proc_entry("cells", proc_afs);
error_proc: error_cells:
remove_proc_entry("fs/afs", NULL); remove_proc_entry("fs/afs", NULL);
error: error_dir:
_leave(" = -ENOMEM"); _leave(" = -ENOMEM");
return -ENOMEM; return -ENOMEM;
}
} /* end afs_proc_init() */
/*****************************************************************************/
/* /*
* clean up the /proc/fs/afs/ directory * clean up the /proc/fs/afs/ directory
*/ */
void afs_proc_cleanup(void) void afs_proc_cleanup(void)
{ {
remove_proc_entry("rootcell", proc_afs);
remove_proc_entry("cells", proc_afs); remove_proc_entry("cells", proc_afs);
remove_proc_entry("fs/afs", NULL); remove_proc_entry("fs/afs", NULL);
}
} /* end afs_proc_cleanup() */
/*****************************************************************************/
/* /*
* open "/proc/fs/afs/cells" which provides a summary of extant cells * open "/proc/fs/afs/cells" which provides a summary of extant cells
*/ */
@ -199,9 +194,8 @@ static int afs_proc_cells_open(struct inode *inode, struct file *file)
m->private = PDE(inode)->data; m->private = PDE(inode)->data;
return 0; return 0;
} /* end afs_proc_cells_open() */ }
/*****************************************************************************/
/* /*
* set up the iterator to start reading from the cells list and return the * set up the iterator to start reading from the cells list and return the
* first item * first item
@ -225,9 +219,8 @@ static void *afs_proc_cells_start(struct seq_file *m, loff_t *_pos)
break; break;
return _p != &afs_proc_cells ? _p : NULL; return _p != &afs_proc_cells ? _p : NULL;
} /* end afs_proc_cells_start() */ }
/*****************************************************************************/
/* /*
* move to next cell in cells list * move to next cell in cells list
*/ */
@ -241,19 +234,16 @@ static void *afs_proc_cells_next(struct seq_file *p, void *v, loff_t *pos)
_p = v == (void *) 1 ? afs_proc_cells.next : _p->next; _p = v == (void *) 1 ? afs_proc_cells.next : _p->next;
return _p != &afs_proc_cells ? _p : NULL; return _p != &afs_proc_cells ? _p : NULL;
} /* end afs_proc_cells_next() */ }
/*****************************************************************************/
/* /*
* clean up after reading from the cells list * clean up after reading from the cells list
*/ */
static void afs_proc_cells_stop(struct seq_file *p, void *v) static void afs_proc_cells_stop(struct seq_file *p, void *v)
{ {
up_read(&afs_proc_cells_sem); up_read(&afs_proc_cells_sem);
}
} /* end afs_proc_cells_stop() */
/*****************************************************************************/
/* /*
* display a header line followed by a load of cell lines * display a header line followed by a load of cell lines
*/ */
@ -261,19 +251,18 @@ static int afs_proc_cells_show(struct seq_file *m, void *v)
{ {
struct afs_cell *cell = list_entry(v, struct afs_cell, proc_link); struct afs_cell *cell = list_entry(v, struct afs_cell, proc_link);
/* display header on line 1 */
if (v == (void *) 1) { if (v == (void *) 1) {
/* display header on line 1 */
seq_puts(m, "USE NAME\n"); seq_puts(m, "USE NAME\n");
return 0; return 0;
} }
/* display one cell per line on subsequent lines */ /* display one cell per line on subsequent lines */
seq_printf(m, "%3d %s\n", atomic_read(&cell->usage), cell->name); seq_printf(m, "%3d %s\n",
atomic_read(&cell->usage), cell->name);
return 0; return 0;
} /* end afs_proc_cells_show() */ }
/*****************************************************************************/
/* /*
* handle writes to /proc/fs/afs/cells * handle writes to /proc/fs/afs/cells
* - to add cells: echo "add <cellname> <IP>[:<IP>][:<IP>]" * - to add cells: echo "add <cellname> <IP>[:<IP>][:<IP>]"
@ -331,25 +320,23 @@ static ssize_t afs_proc_cells_write(struct file *file, const char __user *buf,
goto done; goto done;
printk("kAFS: Added new cell '%s'\n", name); printk("kAFS: Added new cell '%s'\n", name);
} } else {
else {
goto inval; goto inval;
} }
ret = size; ret = size;
done: done:
kfree(kbuf); kfree(kbuf);
_leave(" = %d", ret); _leave(" = %d", ret);
return ret; return ret;
inval: inval:
ret = -EINVAL; ret = -EINVAL;
printk("kAFS: Invalid Command on /proc/fs/afs/cells file\n"); printk("kAFS: Invalid Command on /proc/fs/afs/cells file\n");
goto done; goto done;
} /* end afs_proc_cells_write() */ }
/*****************************************************************************/
/* /*
* Stubs for /proc/fs/afs/rootcell * Stubs for /proc/fs/afs/rootcell
*/ */
@ -369,7 +356,6 @@ static ssize_t afs_proc_rootcell_read(struct file *file, char __user *buf,
return 0; return 0;
} }
/*****************************************************************************/
/* /*
* handle writes to /proc/fs/afs/rootcell * handle writes to /proc/fs/afs/rootcell
* - to initialize rootcell: echo "cell.name:192.168.231.14" * - to initialize rootcell: echo "cell.name:192.168.231.14"
@ -407,14 +393,13 @@ static ssize_t afs_proc_rootcell_write(struct file *file,
if (ret >= 0) if (ret >= 0)
ret = size; /* consume everything, always */ ret = size; /* consume everything, always */
infault: infault:
kfree(kbuf); kfree(kbuf);
nomem: nomem:
_leave(" = %d", ret); _leave(" = %d", ret);
return ret; return ret;
} /* end afs_proc_rootcell_write() */ }
/*****************************************************************************/
/* /*
* initialise /proc/fs/afs/<cell>/ * initialise /proc/fs/afs/<cell>/
*/ */
@ -426,25 +411,25 @@ int afs_proc_cell_setup(struct afs_cell *cell)
cell->proc_dir = proc_mkdir(cell->name, proc_afs); cell->proc_dir = proc_mkdir(cell->name, proc_afs);
if (!cell->proc_dir) if (!cell->proc_dir)
return -ENOMEM; goto error_dir;
p = create_proc_entry("servers", 0, cell->proc_dir); p = create_proc_entry("servers", 0, cell->proc_dir);
if (!p) if (!p)
goto error_proc; goto error_servers;
p->proc_fops = &afs_proc_cell_servers_fops; p->proc_fops = &afs_proc_cell_servers_fops;
p->owner = THIS_MODULE; p->owner = THIS_MODULE;
p->data = cell; p->data = cell;
p = create_proc_entry("vlservers", 0, cell->proc_dir); p = create_proc_entry("vlservers", 0, cell->proc_dir);
if (!p) if (!p)
goto error_servers; goto error_vlservers;
p->proc_fops = &afs_proc_cell_vlservers_fops; p->proc_fops = &afs_proc_cell_vlservers_fops;
p->owner = THIS_MODULE; p->owner = THIS_MODULE;
p->data = cell; p->data = cell;
p = create_proc_entry("volumes", 0, cell->proc_dir); p = create_proc_entry("volumes", 0, cell->proc_dir);
if (!p) if (!p)
goto error_vlservers; goto error_volumes;
p->proc_fops = &afs_proc_cell_volumes_fops; p->proc_fops = &afs_proc_cell_volumes_fops;
p->owner = THIS_MODULE; p->owner = THIS_MODULE;
p->data = cell; p->data = cell;
@ -452,17 +437,17 @@ int afs_proc_cell_setup(struct afs_cell *cell)
_leave(" = 0"); _leave(" = 0");
return 0; return 0;
error_vlservers: error_volumes:
remove_proc_entry("vlservers", cell->proc_dir); remove_proc_entry("vlservers", cell->proc_dir);
error_servers: error_vlservers:
remove_proc_entry("servers", cell->proc_dir); remove_proc_entry("servers", cell->proc_dir);
error_proc: error_servers:
remove_proc_entry(cell->name, proc_afs); remove_proc_entry(cell->name, proc_afs);
error_dir:
_leave(" = -ENOMEM"); _leave(" = -ENOMEM");
return -ENOMEM; return -ENOMEM;
} /* end afs_proc_cell_setup() */ }
/*****************************************************************************/
/* /*
* remove /proc/fs/afs/<cell>/ * remove /proc/fs/afs/<cell>/
*/ */
@ -476,9 +461,8 @@ void afs_proc_cell_remove(struct afs_cell *cell)
remove_proc_entry(cell->name, proc_afs); remove_proc_entry(cell->name, proc_afs);
_leave(""); _leave("");
} /* end afs_proc_cell_remove() */ }
/*****************************************************************************/
/* /*
* open "/proc/fs/afs/<cell>/volumes" which provides a summary of extant cells * open "/proc/fs/afs/<cell>/volumes" which provides a summary of extant cells
*/ */
@ -500,9 +484,8 @@ static int afs_proc_cell_volumes_open(struct inode *inode, struct file *file)
m->private = cell; m->private = cell;
return 0; return 0;
} /* end afs_proc_cell_volumes_open() */ }
/*****************************************************************************/
/* /*
* close the file and release the ref to the cell * close the file and release the ref to the cell
*/ */
@ -511,14 +494,12 @@ static int afs_proc_cell_volumes_release(struct inode *inode, struct file *file)
struct afs_cell *cell = PDE(inode)->data; struct afs_cell *cell = PDE(inode)->data;
int ret; int ret;
ret = seq_release(inode,file); ret = seq_release(inode, file);
afs_put_cell(cell); afs_put_cell(cell);
return ret; return ret;
} /* end afs_proc_cell_volumes_release() */ }
/*****************************************************************************/
/* /*
* set up the iterator to start reading from the cells list and return the * set up the iterator to start reading from the cells list and return the
* first item * first item
@ -545,9 +526,8 @@ static void *afs_proc_cell_volumes_start(struct seq_file *m, loff_t *_pos)
break; break;
return _p != &cell->vl_list ? _p : NULL; return _p != &cell->vl_list ? _p : NULL;
} /* end afs_proc_cell_volumes_start() */ }
/*****************************************************************************/
/* /*
* move to next cell in cells list * move to next cell in cells list
*/ */
@ -562,12 +542,11 @@ static void *afs_proc_cell_volumes_next(struct seq_file *p, void *v,
(*_pos)++; (*_pos)++;
_p = v; _p = v;
_p = v == (void *) 1 ? cell->vl_list.next : _p->next; _p = (v == (void *) 1) ? cell->vl_list.next : _p->next;
return _p != &cell->vl_list ? _p : NULL; return (_p != &cell->vl_list) ? _p : NULL;
} /* end afs_proc_cell_volumes_next() */ }
/*****************************************************************************/
/* /*
* clean up after reading from the cells list * clean up after reading from the cells list
*/ */
@ -576,10 +555,8 @@ static void afs_proc_cell_volumes_stop(struct seq_file *p, void *v)
struct afs_cell *cell = p->private; struct afs_cell *cell = p->private;
up_read(&cell->vl_sem); up_read(&cell->vl_sem);
}
} /* end afs_proc_cell_volumes_stop() */
/*****************************************************************************/
/* /*
* display a header line followed by a load of volume lines * display a header line followed by a load of volume lines
*/ */
@ -600,13 +577,11 @@ static int afs_proc_cell_volumes_show(struct seq_file *m, void *v)
vlocation->vldb.vid[0], vlocation->vldb.vid[0],
vlocation->vldb.vid[1], vlocation->vldb.vid[1],
vlocation->vldb.vid[2], vlocation->vldb.vid[2],
vlocation->vldb.name vlocation->vldb.name);
);
return 0; return 0;
} /* end afs_proc_cell_volumes_show() */ }
/*****************************************************************************/
/* /*
* open "/proc/fs/afs/<cell>/vlservers" which provides a list of volume * open "/proc/fs/afs/<cell>/vlservers" which provides a list of volume
* location server * location server
@ -629,9 +604,8 @@ static int afs_proc_cell_vlservers_open(struct inode *inode, struct file *file)
m->private = cell; m->private = cell;
return 0; return 0;
} /* end afs_proc_cell_vlservers_open() */ }
/*****************************************************************************/
/* /*
* close the file and release the ref to the cell * close the file and release the ref to the cell
*/ */
@ -644,11 +618,9 @@ static int afs_proc_cell_vlservers_release(struct inode *inode,
ret = seq_release(inode,file); ret = seq_release(inode,file);
afs_put_cell(cell); afs_put_cell(cell);
return ret; return ret;
} /* end afs_proc_cell_vlservers_release() */ }
/*****************************************************************************/
/* /*
* set up the iterator to start reading from the cells list and return the * set up the iterator to start reading from the cells list and return the
* first item * first item
@ -672,9 +644,8 @@ static void *afs_proc_cell_vlservers_start(struct seq_file *m, loff_t *_pos)
return NULL; return NULL;
return &cell->vl_addrs[pos]; return &cell->vl_addrs[pos];
} /* end afs_proc_cell_vlservers_start() */ }
/*****************************************************************************/
/* /*
* move to next cell in cells list * move to next cell in cells list
*/ */
@ -692,9 +663,8 @@ static void *afs_proc_cell_vlservers_next(struct seq_file *p, void *v,
return NULL; return NULL;
return &cell->vl_addrs[pos]; return &cell->vl_addrs[pos];
} /* end afs_proc_cell_vlservers_next() */ }
/*****************************************************************************/
/* /*
* clean up after reading from the cells list * clean up after reading from the cells list
*/ */
@ -703,10 +673,8 @@ static void afs_proc_cell_vlservers_stop(struct seq_file *p, void *v)
struct afs_cell *cell = p->private; struct afs_cell *cell = p->private;
up_read(&cell->vl_sem); up_read(&cell->vl_sem);
}
} /* end afs_proc_cell_vlservers_stop() */
/*****************************************************************************/
/* /*
* display a header line followed by a load of volume lines * display a header line followed by a load of volume lines
*/ */
@ -722,11 +690,9 @@ static int afs_proc_cell_vlservers_show(struct seq_file *m, void *v)
/* display one cell per line on subsequent lines */ /* display one cell per line on subsequent lines */
seq_printf(m, "%u.%u.%u.%u\n", NIPQUAD(addr->s_addr)); seq_printf(m, "%u.%u.%u.%u\n", NIPQUAD(addr->s_addr));
return 0; return 0;
} /* end afs_proc_cell_vlservers_show() */ }
/*****************************************************************************/
/* /*
* open "/proc/fs/afs/<cell>/servers" which provides a summary of active * open "/proc/fs/afs/<cell>/servers" which provides a summary of active
* servers * servers
@ -747,11 +713,9 @@ static int afs_proc_cell_servers_open(struct inode *inode, struct file *file)
m = file->private_data; m = file->private_data;
m->private = cell; m->private = cell;
return 0; return 0;
} /* end afs_proc_cell_servers_open() */ }
/*****************************************************************************/
/* /*
* close the file and release the ref to the cell * close the file and release the ref to the cell
*/ */
@ -764,11 +728,9 @@ static int afs_proc_cell_servers_release(struct inode *inode,
ret = seq_release(inode, file); ret = seq_release(inode, file);
afs_put_cell(cell); afs_put_cell(cell);
return ret; return ret;
} /* end afs_proc_cell_servers_release() */ }
/*****************************************************************************/
/* /*
* set up the iterator to start reading from the cells list and return the * set up the iterator to start reading from the cells list and return the
* first item * first item
@ -796,9 +758,8 @@ static void *afs_proc_cell_servers_start(struct seq_file *m, loff_t *_pos)
break; break;
return _p != &cell->sv_list ? _p : NULL; return _p != &cell->sv_list ? _p : NULL;
} /* end afs_proc_cell_servers_start() */ }
/*****************************************************************************/
/* /*
* move to next cell in cells list * move to next cell in cells list
*/ */
@ -816,9 +777,8 @@ static void *afs_proc_cell_servers_next(struct seq_file *p, void *v,
_p = v == (void *) 1 ? cell->sv_list.next : _p->next; _p = v == (void *) 1 ? cell->sv_list.next : _p->next;
return _p != &cell->sv_list ? _p : NULL; return _p != &cell->sv_list ? _p : NULL;
} /* end afs_proc_cell_servers_next() */ }
/*****************************************************************************/
/* /*
* clean up after reading from the cells list * clean up after reading from the cells list
*/ */
@ -828,10 +788,8 @@ static void afs_proc_cell_servers_stop(struct seq_file *p, void *v)
struct afs_cell *cell = p->private; struct afs_cell *cell = p->private;
read_unlock(&cell->sv_lock); read_unlock(&cell->sv_lock);
}
} /* end afs_proc_cell_servers_stop() */
/*****************************************************************************/
/* /*
* display a header line followed by a load of volume lines * display a header line followed by a load of volume lines
*/ */
@ -849,10 +807,7 @@ static int afs_proc_cell_servers_show(struct seq_file *m, void *v)
/* display one cell per line on subsequent lines */ /* display one cell per line on subsequent lines */
sprintf(ipaddr, "%u.%u.%u.%u", NIPQUAD(server->addr)); sprintf(ipaddr, "%u.%u.%u.%u", NIPQUAD(server->addr));
seq_printf(m, "%3d %-15.15s %5d\n", seq_printf(m, "%3d %-15.15s %5d\n",
atomic_read(&server->usage), atomic_read(&server->usage), ipaddr, server->fs_state);
ipaddr,
server->fs_state
);
return 0; return 0;
} /* end afs_proc_cell_servers_show() */ }

47
fs/afs/server.c
View File

@ -1,4 +1,4 @@
/* server.c: AFS server record management /* AFS server record management
* *
* Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com) * Written by David Howells (dhowells@redhat.com)
@ -41,7 +41,6 @@ static const struct afs_timer_ops afs_server_timer_ops = {
.timed_out = __afs_server_timeout, .timed_out = __afs_server_timeout,
}; };
/*****************************************************************************/
/* /*
* lookup a server record in a cell * lookup a server record in a cell
* - TODO: search the cell's server list * - TODO: search the cell's server list
@ -106,7 +105,7 @@ int afs_server_lookup(struct afs_cell *cell, const struct in_addr *addr,
return 0; return 0;
/* found a matching active server */ /* found a matching active server */
use_active_server: use_active_server:
_debug("active server"); _debug("active server");
afs_get_server(active); afs_get_server(active);
write_unlock(&cell->sv_lock); write_unlock(&cell->sv_lock);
@ -119,7 +118,7 @@ int afs_server_lookup(struct afs_cell *cell, const struct in_addr *addr,
/* found a matching server in the graveyard, so resurrect it and /* found a matching server in the graveyard, so resurrect it and
* dispose of the new record */ * dispose of the new record */
resurrect_server: resurrect_server:
_debug("resurrecting server"); _debug("resurrecting server");
list_move_tail(&zombie->link, &cell->sv_list); list_move_tail(&zombie->link, &cell->sv_list);
@ -133,10 +132,8 @@ int afs_server_lookup(struct afs_cell *cell, const struct in_addr *addr,
*_server = zombie; *_server = zombie;
_leave(" = 0 (%p)", zombie); _leave(" = 0 (%p)", zombie);
return 0; return 0;
}
} /* end afs_server_lookup() */
/*****************************************************************************/
/* /*
* destroy a server record * destroy a server record
* - removes from the cell list * - removes from the cell list
@ -175,9 +172,8 @@ void afs_put_server(struct afs_server *server)
write_unlock(&cell->sv_lock); write_unlock(&cell->sv_lock);
_leave(" [killed]"); _leave(" [killed]");
} /* end afs_put_server() */ }
/*****************************************************************************/
/* /*
* timeout server record * timeout server record
* - removes from the cell's graveyard if the usage count is zero * - removes from the cell's graveyard if the usage count is zero
@ -230,9 +226,8 @@ void afs_server_do_timeout(struct afs_server *server)
kfree(server); kfree(server);
_leave(" [destroyed]"); _leave(" [destroyed]");
} /* end afs_server_do_timeout() */ }
/*****************************************************************************/
/* /*
* get a callslot on a connection to the fileserver on the specified server * get a callslot on a connection to the fileserver on the specified server
*/ */
@ -323,7 +318,7 @@ int afs_server_request_callslot(struct afs_server *server,
} }
/* got a callslot, but no connection */ /* got a callslot, but no connection */
obtained_slot: obtained_slot:
/* need to get hold of the RxRPC connection */ /* need to get hold of the RxRPC connection */
down_write(&server->sem); down_write(&server->sem);
@ -337,8 +332,7 @@ int afs_server_request_callslot(struct afs_server *server,
/* reuse an existing connection */ /* reuse an existing connection */
rxrpc_get_connection(server->fs_conn[nconn]); rxrpc_get_connection(server->fs_conn[nconn]);
callslot->conn = server->fs_conn[nconn]; callslot->conn = server->fs_conn[nconn];
} } else {
else {
/* create a new connection */ /* create a new connection */
ret = rxrpc_create_connection(afs_transport, ret = rxrpc_create_connection(afs_transport,
htons(7000), htons(7000),
@ -360,23 +354,21 @@ int afs_server_request_callslot(struct afs_server *server,
return 0; return 0;
/* handle an error occurring */ /* handle an error occurring */
error_release_upw: error_release_upw:
up_write(&server->sem); up_write(&server->sem);
error_release: error_release:
/* either release the callslot or pass it along to another deserving /* either release the callslot or pass it along to another deserving
* task */ * task */
spin_lock(&server->fs_lock); spin_lock(&server->fs_lock);
if (nconn < 0) { if (nconn < 0) {
/* no callslot allocated */ /* no callslot allocated */
} } else if (list_empty(&server->fs_callq)) {
else if (list_empty(&server->fs_callq)) {
/* no one waiting */ /* no one waiting */
server->fs_conn_cnt[nconn]++; server->fs_conn_cnt[nconn]++;
spin_unlock(&server->fs_lock); spin_unlock(&server->fs_lock);
} } else {
else {
/* someone's waiting - dequeue them and wake them up */ /* someone's waiting - dequeue them and wake them up */
pcallslot = list_entry(server->fs_callq.next, pcallslot = list_entry(server->fs_callq.next,
struct afs_server_callslot, link); struct afs_server_callslot, link);
@ -400,10 +392,8 @@ int afs_server_request_callslot(struct afs_server *server,
_leave(" = %d", ret); _leave(" = %d", ret);
return ret; return ret;
}
} /* end afs_server_request_callslot() */
/*****************************************************************************/
/* /*
* release a callslot back to the server * release a callslot back to the server
* - transfers the RxRPC connection to the next pending callslot if possible * - transfers the RxRPC connection to the next pending callslot if possible
@ -426,8 +416,7 @@ void afs_server_release_callslot(struct afs_server *server,
/* no one waiting */ /* no one waiting */
server->fs_conn_cnt[callslot->nconn]++; server->fs_conn_cnt[callslot->nconn]++;
spin_unlock(&server->fs_lock); spin_unlock(&server->fs_lock);
} } else {
else {
/* someone's waiting - dequeue them and wake them up */ /* someone's waiting - dequeue them and wake them up */
pcallslot = list_entry(server->fs_callq.next, pcallslot = list_entry(server->fs_callq.next,
struct afs_server_callslot, link); struct afs_server_callslot, link);
@ -449,9 +438,8 @@ void afs_server_release_callslot(struct afs_server *server,
rxrpc_put_connection(callslot->conn); rxrpc_put_connection(callslot->conn);
_leave(""); _leave("");
} /* end afs_server_release_callslot() */ }
/*****************************************************************************/
/* /*
* get a handle to a connection to the vlserver (volume location) on the * get a handle to a connection to the vlserver (volume location) on the
* specified server * specified server
@ -473,8 +461,7 @@ int afs_server_get_vlconn(struct afs_server *server,
rxrpc_get_connection(server->vlserver); rxrpc_get_connection(server->vlserver);
conn = server->vlserver; conn = server->vlserver;
up_read(&server->sem); up_read(&server->sem);
} } else {
else {
/* create a new connection */ /* create a new connection */
up_read(&server->sem); up_read(&server->sem);
down_write(&server->sem); down_write(&server->sem);
@ -496,4 +483,4 @@ int afs_server_get_vlconn(struct afs_server *server,
*_conn = conn; *_conn = conn;
_leave(" = %d", ret); _leave(" = %d", ret);
return ret; return ret;
} /* end afs_server_get_vlconn() */ }

41
fs/afs/server.h
View File

@ -1,4 +1,4 @@
/* server.h: AFS server record /* AFS server record
* *
* Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com) * Written by David Howells (dhowells@redhat.com)
@ -9,8 +9,8 @@
* 2 of the License, or (at your option) any later version. * 2 of the License, or (at your option) any later version.
*/ */
#ifndef _LINUX_AFS_SERVER_H #ifndef AFS_SERVER_H
#define _LINUX_AFS_SERVER_H #define AFS_SERVER_H
#include "types.h" #include "types.h"
#include "kafstimod.h" #include "kafstimod.h"
@ -19,12 +19,10 @@
extern spinlock_t afs_server_peer_lock; extern spinlock_t afs_server_peer_lock;
/*****************************************************************************/
/* /*
* AFS server record * AFS server record
*/ */
struct afs_server struct afs_server {
{
atomic_t usage; atomic_t usage;
struct afs_cell *cell; /* cell in which server resides */ struct afs_cell *cell; /* cell in which server resides */
struct list_head link; /* link in cell's server list */ struct list_head link; /* link in cell's server list */
@ -50,20 +48,19 @@ struct afs_server
spinlock_t cb_lock; /* access lock */ spinlock_t cb_lock; /* access lock */
}; };
extern int afs_server_lookup(struct afs_cell *cell, extern int afs_server_lookup(struct afs_cell *, const struct in_addr *,
const struct in_addr *addr, struct afs_server **);
struct afs_server **_server);
#define afs_get_server(S) do { atomic_inc(&(S)->usage); } while(0) #define afs_get_server(S) do { atomic_inc(&(S)->usage); } while(0)
extern void afs_put_server(struct afs_server *server); extern void afs_put_server(struct afs_server *);
extern void afs_server_do_timeout(struct afs_server *server); extern void afs_server_do_timeout(struct afs_server *);
extern int afs_server_find_by_peer(const struct rxrpc_peer *peer, extern int afs_server_find_by_peer(const struct rxrpc_peer *,
struct afs_server **_server); struct afs_server **);
extern int afs_server_get_vlconn(struct afs_server *server, extern int afs_server_get_vlconn(struct afs_server *,
struct rxrpc_connection **_conn); struct rxrpc_connection **);
static inline static inline
struct afs_server *afs_server_get_from_peer(struct rxrpc_peer *peer) struct afs_server *afs_server_get_from_peer(struct rxrpc_peer *peer)
@ -79,12 +76,10 @@ struct afs_server *afs_server_get_from_peer(struct rxrpc_peer *peer)
return server; return server;
} }
/*****************************************************************************/
/* /*
* AFS server callslot grant record * AFS server callslot grant record
*/ */
struct afs_server_callslot struct afs_server_callslot {
{
struct list_head link; /* link in server's list */ struct list_head link; /* link in server's list */
struct task_struct *task; /* process waiting to make call */ struct task_struct *task; /* process waiting to make call */
struct rxrpc_connection *conn; /* connection to use (or NULL on error) */ struct rxrpc_connection *conn; /* connection to use (or NULL on error) */
@ -93,10 +88,10 @@ struct afs_server_callslot
int errno; /* error number if nconn==-1 */ int errno; /* error number if nconn==-1 */
}; };
extern int afs_server_request_callslot(struct afs_server *server, extern int afs_server_request_callslot(struct afs_server *,
struct afs_server_callslot *callslot); struct afs_server_callslot *);
extern void afs_server_release_callslot(struct afs_server *server, extern void afs_server_release_callslot(struct afs_server *,
struct afs_server_callslot *callslot); struct afs_server_callslot *);
#endif /* _LINUX_AFS_SERVER_H */ #endif /* AFS_SERVER_H */

62
fs/afs/super.c
View File

@ -1,4 +1,5 @@
/* /* AFS superblock handling
*
* Copyright (c) 2002 Red Hat, Inc. All rights reserved. * Copyright (c) 2002 Red Hat, Inc. All rights reserved.
* *
* This software may be freely redistributed under the terms of the * This software may be freely redistributed under the terms of the
@ -9,7 +10,7 @@
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
* *
* Authors: David Howells <dhowells@redhat.com> * Authors: David Howells <dhowells@redhat.com>
* David Woodhouse <dwmw2@cambridge.redhat.com> * David Woodhouse <dwmw2@redhat.com>
* *
*/ */
@ -68,7 +69,6 @@ static const struct super_operations afs_super_ops = {
static struct kmem_cache *afs_inode_cachep; static struct kmem_cache *afs_inode_cachep;
static atomic_t afs_count_active_inodes; static atomic_t afs_count_active_inodes;
/*****************************************************************************/
/* /*
* initialise the filesystem * initialise the filesystem
*/ */
@ -105,9 +105,8 @@ int __init afs_fs_init(void)
kleave(" = 0"); kleave(" = 0");
return 0; return 0;
} /* end afs_fs_init() */ }
/*****************************************************************************/
/* /*
* clean up the filesystem * clean up the filesystem
*/ */
@ -122,10 +121,8 @@ void __exit afs_fs_exit(void)
} }
kmem_cache_destroy(afs_inode_cachep); kmem_cache_destroy(afs_inode_cachep);
}
} /* end afs_fs_exit() */
/*****************************************************************************/
/* /*
* check that an argument has a value * check that an argument has a value
*/ */
@ -136,9 +133,8 @@ static int want_arg(char **_value, const char *option)
return 0; return 0;
} }
return 1; return 1;
} /* end want_arg() */ }
/*****************************************************************************/
/* /*
* check that there's no subsequent value * check that there's no subsequent value
*/ */
@ -150,9 +146,8 @@ static int want_no_value(char *const *_value, const char *option)
return 0; return 0;
} }
return 1; return 1;
} /* end want_no_value() */ }
/*****************************************************************************/
/* /*
* parse the mount options * parse the mount options
* - this function has been shamelessly adapted from the ext3 fs which * - this function has been shamelessly adapted from the ext3 fs which
@ -183,14 +178,12 @@ static int afs_super_parse_options(struct afs_mount_params *params,
return -EINVAL; return -EINVAL;
params->rwpath = 1; params->rwpath = 1;
continue; continue;
} } else if (strcmp(key, "vol") == 0) {
else if (strcmp(key, "vol") == 0) {
if (!want_arg(&value, "vol")) if (!want_arg(&value, "vol"))
return -EINVAL; return -EINVAL;
*devname = value; *devname = value;
continue; continue;
} } else if (strcmp(key, "cell") == 0) {
else if (strcmp(key, "cell") == 0) {
if (!want_arg(&value, "cell")) if (!want_arg(&value, "cell"))
return -EINVAL; return -EINVAL;
afs_put_cell(params->default_cell); afs_put_cell(params->default_cell);
@ -209,12 +202,11 @@ static int afs_super_parse_options(struct afs_mount_params *params,
ret = 0; ret = 0;
error: error:
_leave(" = %d", ret); _leave(" = %d", ret);
return ret; return ret;
} /* end afs_super_parse_options() */ }
/*****************************************************************************/
/* /*
* check a superblock to see if it's the one we're looking for * check a superblock to see if it's the one we're looking for
*/ */
@ -224,9 +216,8 @@ static int afs_test_super(struct super_block *sb, void *data)
struct afs_super_info *as = sb->s_fs_info; struct afs_super_info *as = sb->s_fs_info;
return as->volume == params->volume; return as->volume == params->volume;
} /* end afs_test_super() */ }
/*****************************************************************************/
/* /*
* fill in the superblock * fill in the superblock
*/ */
@ -276,7 +267,7 @@ static int afs_fill_super(struct super_block *sb, void *data, int silent)
kleave(" = 0"); kleave(" = 0");
return 0; return 0;
error: error:
iput(inode); iput(inode);
afs_put_volume(as->volume); afs_put_volume(as->volume);
kfree(as); kfree(as);
@ -285,9 +276,8 @@ static int afs_fill_super(struct super_block *sb, void *data, int silent)
kleave(" = %d", ret); kleave(" = %d", ret);
return ret; return ret;
} /* end afs_fill_super() */ }
/*****************************************************************************/
/* /*
* get an AFS superblock * get an AFS superblock
* - TODO: don't use get_sb_nodev(), but rather call sget() directly * - TODO: don't use get_sb_nodev(), but rather call sget() directly
@ -354,15 +344,14 @@ static int afs_get_sb(struct file_system_type *fs_type,
_leave(" = 0 [%p]", 0, sb); _leave(" = 0 [%p]", 0, sb);
return 0; return 0;
error: error:
afs_put_volume(params.volume); afs_put_volume(params.volume);
afs_put_cell(params.default_cell); afs_put_cell(params.default_cell);
afscm_stop(); afscm_stop();
_leave(" = %d", ret); _leave(" = %d", ret);
return ret; return ret;
} /* end afs_get_sb() */ }
/*****************************************************************************/
/* /*
* finish the unmounting process on the superblock * finish the unmounting process on the superblock
*/ */
@ -376,16 +365,15 @@ static void afs_put_super(struct super_block *sb)
afscm_stop(); afscm_stop();
_leave(""); _leave("");
} /* end afs_put_super() */ }
/*****************************************************************************/
/* /*
* initialise an inode cache slab element prior to any use * initialise an inode cache slab element prior to any use
*/ */
static void afs_i_init_once(void *_vnode, struct kmem_cache *cachep, static void afs_i_init_once(void *_vnode, struct kmem_cache *cachep,
unsigned long flags) unsigned long flags)
{ {
struct afs_vnode *vnode = (struct afs_vnode *) _vnode; struct afs_vnode *vnode = _vnode;
if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) == if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
SLAB_CTOR_CONSTRUCTOR) { SLAB_CTOR_CONSTRUCTOR) {
@ -398,10 +386,8 @@ static void afs_i_init_once(void *_vnode, struct kmem_cache *cachep,
afs_timer_init(&vnode->cb_timeout, afs_timer_init(&vnode->cb_timeout,
&afs_vnode_cb_timed_out_ops); &afs_vnode_cb_timed_out_ops);
} }
}
} /* end afs_i_init_once() */
/*****************************************************************************/
/* /*
* allocate an AFS inode struct from our slab cache * allocate an AFS inode struct from our slab cache
*/ */
@ -409,8 +395,7 @@ static struct inode *afs_alloc_inode(struct super_block *sb)
{ {
struct afs_vnode *vnode; struct afs_vnode *vnode;
vnode = (struct afs_vnode *) vnode = kmem_cache_alloc(afs_inode_cachep, GFP_KERNEL);
kmem_cache_alloc(afs_inode_cachep, GFP_KERNEL);
if (!vnode) if (!vnode)
return NULL; return NULL;
@ -424,9 +409,8 @@ static struct inode *afs_alloc_inode(struct super_block *sb)
vnode->flags = 0; vnode->flags = 0;
return &vnode->vfs_inode; return &vnode->vfs_inode;
} /* end afs_alloc_inode() */ }
/*****************************************************************************/
/* /*
* destroy an AFS inode struct * destroy an AFS inode struct
*/ */
@ -435,7 +419,5 @@ static void afs_destroy_inode(struct inode *inode)
_enter("{%lu}", inode->i_ino); _enter("{%lu}", inode->i_ino);
kmem_cache_free(afs_inode_cachep, AFS_FS_I(inode)); kmem_cache_free(afs_inode_cachep, AFS_FS_I(inode));
atomic_dec(&afs_count_active_inodes); atomic_dec(&afs_count_active_inodes);
}
} /* end afs_destroy_inode() */

16
fs/afs/super.h
View File

@ -1,4 +1,4 @@
/* super.h: AFS filesystem internal private data /* AFS filesystem internal private data
* *
* Copyright (c) 2002 Red Hat, Inc. All rights reserved. * Copyright (c) 2002 Red Hat, Inc. All rights reserved.
* *
@ -14,21 +14,17 @@
* *
*/ */
#ifndef _LINUX_AFS_SUPER_H #ifndef AFS_SUPER_H
#define _LINUX_AFS_SUPER_H #define AFS_SUPER_H
#include <linux/fs.h> #include <linux/fs.h>
#include "server.h" #include "server.h"
#ifdef __KERNEL__
/*****************************************************************************/
/* /*
* AFS superblock private data * AFS superblock private data
* - there's one superblock per volume * - there's one superblock per volume
*/ */
struct afs_super_info struct afs_super_info {
{
struct afs_volume *volume; /* volume record */ struct afs_volume *volume; /* volume record */
char rwparent; /* T if parent is R/W AFS volume */ char rwparent; /* T if parent is R/W AFS volume */
}; };
@ -40,6 +36,4 @@ static inline struct afs_super_info *AFS_FS_S(struct super_block *sb)
extern struct file_system_type afs_fs_type; extern struct file_system_type afs_fs_type;
#endif /* __KERNEL__ */ #endif /* AFS_SUPER_H */
#endif /* _LINUX_AFS_SUPER_H */

8
fs/afs/transport.h
View File

@ -1,4 +1,4 @@
/* transport.h: AFS transport management /* AFS transport management
* *
* Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com) * Written by David Howells (dhowells@redhat.com)
@ -9,8 +9,8 @@
* 2 of the License, or (at your option) any later version. * 2 of the License, or (at your option) any later version.
*/ */
#ifndef _LINUX_AFS_TRANSPORT_H #ifndef AFS_TRANSPORT_H
#define _LINUX_AFS_TRANSPORT_H #define AFS_TRANSPORT_H
#include "types.h" #include "types.h"
#include <rxrpc/transport.h> #include <rxrpc/transport.h>
@ -18,4 +18,4 @@
/* the cache manager transport endpoint */ /* the cache manager transport endpoint */
extern struct rxrpc_transport *afs_transport; extern struct rxrpc_transport *afs_transport;
#endif /* _LINUX_AFS_TRANSPORT_H */ #endif /* AFS_TRANSPORT_H */

34
fs/afs/types.h
View File

@ -1,4 +1,4 @@
/* types.h: AFS types /* AFS types
* *
* Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com) * Written by David Howells (dhowells@redhat.com)
@ -9,12 +9,10 @@
* 2 of the License, or (at your option) any later version. * 2 of the License, or (at your option) any later version.
*/ */
#ifndef _LINUX_AFS_TYPES_H #ifndef AFS_TYPES_H
#define _LINUX_AFS_TYPES_H #define AFS_TYPES_H
#ifdef __KERNEL__
#include <rxrpc/types.h> #include <rxrpc/types.h>
#endif /* __KERNEL__ */
typedef unsigned afs_volid_t; typedef unsigned afs_volid_t;
typedef unsigned afs_vnodeid_t; typedef unsigned afs_vnodeid_t;
@ -33,23 +31,18 @@ typedef enum {
AFS_FTYPE_SYMLINK = 3, AFS_FTYPE_SYMLINK = 3,
} afs_file_type_t; } afs_file_type_t;
#ifdef __KERNEL__
struct afs_cell; struct afs_cell;
struct afs_vnode; struct afs_vnode;
/*****************************************************************************/
/* /*
* AFS file identifier * AFS file identifier
*/ */
struct afs_fid struct afs_fid {
{
afs_volid_t vid; /* volume ID */ afs_volid_t vid; /* volume ID */
afs_vnodeid_t vnode; /* file index within volume */ afs_vnodeid_t vnode; /* file index within volume */
unsigned unique; /* unique ID number (file index version) */ unsigned unique; /* unique ID number (file index version) */
}; };
/*****************************************************************************/
/* /*
* AFS callback notification * AFS callback notification
*/ */
@ -60,8 +53,7 @@ typedef enum {
AFSCM_CB_DROPPED = 3, /* CB promise cancelled by file server */ AFSCM_CB_DROPPED = 3, /* CB promise cancelled by file server */
} afs_callback_type_t; } afs_callback_type_t;
struct afs_callback struct afs_callback {
{
struct afs_server *server; /* server that made the promise */ struct afs_server *server; /* server that made the promise */
struct afs_fid fid; /* file identifier */ struct afs_fid fid; /* file identifier */
unsigned version; /* callback version */ unsigned version; /* callback version */
@ -71,12 +63,10 @@ struct afs_callback
#define AFSCBMAX 50 #define AFSCBMAX 50
/*****************************************************************************/
/* /*
* AFS volume information * AFS volume information
*/ */
struct afs_volume_info struct afs_volume_info {
{
afs_volid_t vid; /* volume ID */ afs_volid_t vid; /* volume ID */
afs_voltype_t type; /* type of this volume */ afs_voltype_t type; /* type of this volume */
afs_volid_t type_vids[5]; /* volume ID's for possible types for this vol */ afs_volid_t type_vids[5]; /* volume ID's for possible types for this vol */
@ -88,12 +78,10 @@ struct afs_volume_info
} servers[8]; } servers[8];
}; };
/*****************************************************************************/
/* /*
* AFS file status information * AFS file status information
*/ */
struct afs_file_status struct afs_file_status {
{
unsigned if_version; /* interface version */ unsigned if_version; /* interface version */
#define AFS_FSTATUS_VERSION 1 #define AFS_FSTATUS_VERSION 1
@ -111,15 +99,11 @@ struct afs_file_status
time_t mtime_server; /* last time server changed data */ time_t mtime_server; /* last time server changed data */
}; };
/*****************************************************************************/
/* /*
* AFS volume synchronisation information * AFS volume synchronisation information
*/ */
struct afs_volsync struct afs_volsync {
{
time_t creation; /* volume creation time */ time_t creation; /* volume creation time */
}; };
#endif /* __KERNEL__ */ #endif /* AFS_TYPES_H */
#endif /* _LINUX_AFS_TYPES_H */

58
fs/afs/vlclient.c
View File

@ -1,4 +1,4 @@
/* vlclient.c: AFS Volume Location Service client /* AFS Volume Location Service client
* *
* Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com) * Written by David Howells (dhowells@redhat.com)
@ -30,7 +30,6 @@
static void afs_rxvl_get_entry_by_id_attn(struct rxrpc_call *call); static void afs_rxvl_get_entry_by_id_attn(struct rxrpc_call *call);
static void afs_rxvl_get_entry_by_id_error(struct rxrpc_call *call); static void afs_rxvl_get_entry_by_id_error(struct rxrpc_call *call);
/*****************************************************************************/
/* /*
* map afs VL abort codes to/from Linux error codes * map afs VL abort codes to/from Linux error codes
* - called with call->lock held * - called with call->lock held
@ -87,10 +86,9 @@ static void afs_rxvl_aemap(struct rxrpc_call *call)
default: default:
return; return;
} }
} /* end afs_rxvl_aemap() */ }
#if 0 #if 0
/*****************************************************************************/
/* /*
* probe a volume location server to see if it is still alive -- unused * probe a volume location server to see if it is still alive -- unused
*/ */
@ -159,24 +157,22 @@ static int afs_rxvl_probe(struct afs_server *server, int alloc_flags)
BUG(); BUG();
} }
abort: abort:
set_current_state(TASK_UNINTERRUPTIBLE); set_current_state(TASK_UNINTERRUPTIBLE);
rxrpc_call_abort(call, ret); rxrpc_call_abort(call, ret);
schedule(); schedule();
out_unwait: out_unwait:
set_current_state(TASK_RUNNING); set_current_state(TASK_RUNNING);
remove_wait_queue(&call->waitq, &myself); remove_wait_queue(&call->waitq, &myself);
rxrpc_put_call(call); rxrpc_put_call(call);
out_put_conn: out_put_conn:
rxrpc_put_connection(conn); rxrpc_put_connection(conn);
out: out:
return ret; return ret;
}
} /* end afs_rxvl_probe() */
#endif #endif
/*****************************************************************************/
/* /*
* look up a volume location database entry by name * look up a volume location database entry by name
*/ */
@ -294,24 +290,23 @@ int afs_rxvl_get_entry_by_name(struct afs_server *server,
entry->rtime = get_seconds(); entry->rtime = get_seconds();
ret = 0; ret = 0;
out_unwait: out_unwait:
set_current_state(TASK_RUNNING); set_current_state(TASK_RUNNING);
remove_wait_queue(&call->waitq, &myself); remove_wait_queue(&call->waitq, &myself);
rxrpc_put_call(call); rxrpc_put_call(call);
out_put_conn: out_put_conn:
rxrpc_put_connection(conn); rxrpc_put_connection(conn);
out: out:
_leave(" = %d", ret); _leave(" = %d", ret);
return ret; return ret;
abort: abort:
set_current_state(TASK_UNINTERRUPTIBLE); set_current_state(TASK_UNINTERRUPTIBLE);
rxrpc_call_abort(call, ret); rxrpc_call_abort(call, ret);
schedule(); schedule();
goto out_unwait; goto out_unwait;
} /* end afs_rxvl_get_entry_by_name() */ }
/*****************************************************************************/
/* /*
* look up a volume location database entry by ID * look up a volume location database entry by ID
*/ */
@ -434,24 +429,23 @@ int afs_rxvl_get_entry_by_id(struct afs_server *server,
entry->rtime = get_seconds(); entry->rtime = get_seconds();
ret = 0; ret = 0;
out_unwait: out_unwait:
set_current_state(TASK_RUNNING); set_current_state(TASK_RUNNING);
remove_wait_queue(&call->waitq, &myself); remove_wait_queue(&call->waitq, &myself);
rxrpc_put_call(call); rxrpc_put_call(call);
out_put_conn: out_put_conn:
rxrpc_put_connection(conn); rxrpc_put_connection(conn);
out: out:
_leave(" = %d", ret); _leave(" = %d", ret);
return ret; return ret;
abort: abort:
set_current_state(TASK_UNINTERRUPTIBLE); set_current_state(TASK_UNINTERRUPTIBLE);
rxrpc_call_abort(call, ret); rxrpc_call_abort(call, ret);
schedule(); schedule();
goto out_unwait; goto out_unwait;
} /* end afs_rxvl_get_entry_by_id() */ }
/*****************************************************************************/
/* /*
* look up a volume location database entry by ID asynchronously * look up a volume location database entry by ID asynchronously
*/ */
@ -533,14 +527,12 @@ int afs_rxvl_get_entry_by_id_async(struct afs_async_op *op,
break; break;
} }
out: out:
rxrpc_put_call(call); rxrpc_put_call(call);
_leave(" = %d", ret); _leave(" = %d", ret);
return ret; return ret;
}
} /* end afs_rxvl_get_entry_by_id_async() */
/*****************************************************************************/
/* /*
* attend to the asynchronous get VLDB entry by ID * attend to the asynchronous get VLDB entry by ID
*/ */
@ -630,14 +622,13 @@ int afs_rxvl_get_entry_by_id_async2(struct afs_async_op *op,
_leave(" = -EAGAIN"); _leave(" = -EAGAIN");
return -EAGAIN; return -EAGAIN;
done: done:
rxrpc_put_call(op->call); rxrpc_put_call(op->call);
op->call = NULL; op->call = NULL;
_leave(" = %d", ret); _leave(" = %d", ret);
return ret; return ret;
} /* end afs_rxvl_get_entry_by_id_async2() */ }
/*****************************************************************************/
/* /*
* handle attention events on an async get-entry-by-ID op * handle attention events on an async get-entry-by-ID op
* - called from krxiod * - called from krxiod
@ -674,10 +665,8 @@ static void afs_rxvl_get_entry_by_id_attn(struct rxrpc_call *call)
} }
_leave(""); _leave("");
}
} /* end afs_rxvl_get_entry_by_id_attn() */
/*****************************************************************************/
/* /*
* handle error events on an async get-entry-by-ID op * handle error events on an async get-entry-by-ID op
* - called from krxiod * - called from krxiod
@ -691,5 +680,4 @@ static void afs_rxvl_get_entry_by_id_error(struct rxrpc_call *call)
afs_kafsasyncd_attend_op(op); afs_kafsasyncd_attend_op(op);
_leave(""); _leave("");
}
} /* end afs_rxvl_get_entry_by_id_error() */

34
fs/afs/vlclient.h
View File

@ -1,4 +1,4 @@
/* vlclient.h: Volume Location Service client interface /* Volume Location Service client interface
* *
* Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com) * Written by David Howells (dhowells@redhat.com)
@ -9,8 +9,8 @@
* 2 of the License, or (at your option) any later version. * 2 of the License, or (at your option) any later version.
*/ */
#ifndef _LINUX_AFS_VLCLIENT_H #ifndef AFS_VLCLIENT_H
#define _LINUX_AFS_VLCLIENT_H #define AFS_VLCLIENT_H
#include "types.h" #include "types.h"
@ -68,26 +68,18 @@ struct afs_vldbentry {
#define AFS_VLSF_RWVOL 0x0004 /* this server holds a R/W instance of the volume */ #define AFS_VLSF_RWVOL 0x0004 /* this server holds a R/W instance of the volume */
#define AFS_VLSF_BACKVOL 0x0008 /* this server holds a backup instance of the volume */ #define AFS_VLSF_BACKVOL 0x0008 /* this server holds a backup instance of the volume */
} servers[8]; } servers[8];
}; };
/* look up a volume location database entry by name */ extern int afs_rxvl_get_entry_by_name(struct afs_server *, const char *,
extern int afs_rxvl_get_entry_by_name(struct afs_server *server, unsigned, struct afs_cache_vlocation *);
const char *volname, extern int afs_rxvl_get_entry_by_id(struct afs_server *, afs_volid_t,
unsigned volnamesz, afs_voltype_t,
struct afs_cache_vlocation *entry); struct afs_cache_vlocation *);
/* look up a volume location database entry by ID */ extern int afs_rxvl_get_entry_by_id_async(struct afs_async_op *,
extern int afs_rxvl_get_entry_by_id(struct afs_server *server, afs_volid_t, afs_voltype_t);
afs_volid_t volid,
afs_voltype_t voltype,
struct afs_cache_vlocation *entry);
extern int afs_rxvl_get_entry_by_id_async(struct afs_async_op *op, extern int afs_rxvl_get_entry_by_id_async2(struct afs_async_op *,
afs_volid_t volid, struct afs_cache_vlocation *);
afs_voltype_t voltype);
extern int afs_rxvl_get_entry_by_id_async2(struct afs_async_op *op, #endif /* AFS_VLCLIENT_H */
struct afs_cache_vlocation *entry);
#endif /* _LINUX_AFS_VLCLIENT_H */

102
fs/afs/vlocation.c
View File

@ -1,4 +1,4 @@
/* vlocation.c: volume location management /* volume location management
* *
* Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com) * Written by David Howells (dhowells@redhat.com)
@ -73,7 +73,6 @@ struct cachefs_index_def afs_vlocation_cache_index_def = {
}; };
#endif #endif
/*****************************************************************************/
/* /*
* iterate through the VL servers in a cell until one of them admits knowing * iterate through the VL servers in a cell until one of them admits knowing
* about the volume in question * about the volume in question
@ -146,13 +145,11 @@ static int afs_vlocation_access_vl_by_name(struct afs_vlocation *vlocation,
cell->vl_curr_svix %= cell->vl_naddrs; cell->vl_curr_svix %= cell->vl_naddrs;
} }
out: out:
_leave(" = %d", ret); _leave(" = %d", ret);
return ret; return ret;
}
} /* end afs_vlocation_access_vl_by_name() */
/*****************************************************************************/
/* /*
* iterate through the VL servers in a cell until one of them admits knowing * iterate through the VL servers in a cell until one of them admits knowing
* about the volume in question * about the volume in question
@ -225,13 +222,11 @@ static int afs_vlocation_access_vl_by_id(struct afs_vlocation *vlocation,
cell->vl_curr_svix %= cell->vl_naddrs; cell->vl_curr_svix %= cell->vl_naddrs;
} }
out: out:
_leave(" = %d", ret); _leave(" = %d", ret);
return ret; return ret;
}
} /* end afs_vlocation_access_vl_by_id() */
/*****************************************************************************/
/* /*
* lookup volume location * lookup volume location
* - caller must have cell->vol_sem write-locked * - caller must have cell->vol_sem write-locked
@ -321,7 +316,7 @@ int afs_vlocation_lookup(struct afs_cell *cell,
goto found_on_vlserver; goto found_on_vlserver;
found_in_graveyard: found_in_graveyard:
/* found in the graveyard - resurrect */ /* found in the graveyard - resurrect */
_debug("found in graveyard"); _debug("found in graveyard");
atomic_inc(&vlocation->usage); atomic_inc(&vlocation->usage);
@ -331,16 +326,16 @@ int afs_vlocation_lookup(struct afs_cell *cell,
afs_kafstimod_del_timer(&vlocation->timeout); afs_kafstimod_del_timer(&vlocation->timeout);
goto active; goto active;
found_in_memory: found_in_memory:
/* found in memory - check to see if it's active */ /* found in memory - check to see if it's active */
_debug("found in memory"); _debug("found in memory");
atomic_inc(&vlocation->usage); atomic_inc(&vlocation->usage);
active: active:
active = 1; active = 1;
#ifdef AFS_CACHING_SUPPORT #ifdef AFS_CACHING_SUPPORT
found_in_cache: found_in_cache:
#endif #endif
/* try to look up a cached volume in the cell VL databases by ID */ /* try to look up a cached volume in the cell VL databases by ID */
_debug("found in cache"); _debug("found in cache");
@ -364,16 +359,13 @@ int afs_vlocation_lookup(struct afs_cell *cell,
if (vlocation->vldb.vidmask & AFS_VOL_VTM_RW) { if (vlocation->vldb.vidmask & AFS_VOL_VTM_RW) {
vid = vlocation->vldb.vid[0]; vid = vlocation->vldb.vid[0];
voltype = AFSVL_RWVOL; voltype = AFSVL_RWVOL;
} } else if (vlocation->vldb.vidmask & AFS_VOL_VTM_RO) {
else if (vlocation->vldb.vidmask & AFS_VOL_VTM_RO) {
vid = vlocation->vldb.vid[1]; vid = vlocation->vldb.vid[1];
voltype = AFSVL_ROVOL; voltype = AFSVL_ROVOL;
} } else if (vlocation->vldb.vidmask & AFS_VOL_VTM_BAK) {
else if (vlocation->vldb.vidmask & AFS_VOL_VTM_BAK) {
vid = vlocation->vldb.vid[2]; vid = vlocation->vldb.vid[2];
voltype = AFSVL_BACKVOL; voltype = AFSVL_BACKVOL;
} } else {
else {
BUG(); BUG();
vid = 0; vid = 0;
voltype = 0; voltype = 0;
@ -400,7 +392,7 @@ int afs_vlocation_lookup(struct afs_cell *cell,
goto error; goto error;
} }
found_on_vlserver: found_on_vlserver:
_debug("Done VL Lookup: %*.*s %02x { %08x(%x) %08x(%x) %08x(%x) }", _debug("Done VL Lookup: %*.*s %02x { %08x(%x) %08x(%x) %08x(%x) }",
namesz, namesz, name, namesz, namesz, name,
vldb.vidmask, vldb.vidmask,
@ -430,12 +422,11 @@ int afs_vlocation_lookup(struct afs_cell *cell,
_leave(" = 0 (%p)",vlocation); _leave(" = 0 (%p)",vlocation);
return 0; return 0;
error: error:
if (vlocation) { if (vlocation) {
if (active) { if (active) {
__afs_put_vlocation(vlocation); __afs_put_vlocation(vlocation);
} } else {
else {
list_del(&vlocation->link); list_del(&vlocation->link);
#ifdef AFS_CACHING_SUPPORT #ifdef AFS_CACHING_SUPPORT
cachefs_relinquish_cookie(vlocation->cache, 0); cachefs_relinquish_cookie(vlocation->cache, 0);
@ -447,9 +438,8 @@ int afs_vlocation_lookup(struct afs_cell *cell,
_leave(" = %d", ret); _leave(" = %d", ret);
return ret; return ret;
} /* end afs_vlocation_lookup() */ }
/*****************************************************************************/
/* /*
* finish using a volume location record * finish using a volume location record
* - caller must have cell->vol_sem write-locked * - caller must have cell->vol_sem write-locked
@ -489,9 +479,8 @@ static void __afs_put_vlocation(struct afs_vlocation *vlocation)
spin_unlock(&cell->vl_gylock); spin_unlock(&cell->vl_gylock);
_leave(" [killed]"); _leave(" [killed]");
} /* end __afs_put_vlocation() */ }
/*****************************************************************************/
/* /*
* finish using a volume location record * finish using a volume location record
*/ */
@ -504,9 +493,8 @@ void afs_put_vlocation(struct afs_vlocation *vlocation)
__afs_put_vlocation(vlocation); __afs_put_vlocation(vlocation);
up_write(&cell->vl_sem); up_write(&cell->vl_sem);
} }
} /* end afs_put_vlocation() */ }
/*****************************************************************************/
/* /*
* timeout vlocation record * timeout vlocation record
* - removes from the cell's graveyard if the usage count is zero * - removes from the cell's graveyard if the usage count is zero
@ -543,9 +531,8 @@ void afs_vlocation_do_timeout(struct afs_vlocation *vlocation)
kfree(vlocation); kfree(vlocation);
_leave(" [destroyed]"); _leave(" [destroyed]");
} /* end afs_vlocation_do_timeout() */ }
/*****************************************************************************/
/* /*
* send an update operation to the currently selected server * send an update operation to the currently selected server
*/ */
@ -564,16 +551,13 @@ static int afs_vlocation_update_begin(struct afs_vlocation *vlocation)
if (vlocation->vldb.vidmask & AFS_VOL_VTM_RW) { if (vlocation->vldb.vidmask & AFS_VOL_VTM_RW) {
vid = vlocation->vldb.vid[0]; vid = vlocation->vldb.vid[0];
voltype = AFSVL_RWVOL; voltype = AFSVL_RWVOL;
} } else if (vlocation->vldb.vidmask & AFS_VOL_VTM_RO) {
else if (vlocation->vldb.vidmask & AFS_VOL_VTM_RO) {
vid = vlocation->vldb.vid[1]; vid = vlocation->vldb.vid[1];
voltype = AFSVL_ROVOL; voltype = AFSVL_ROVOL;
} } else if (vlocation->vldb.vidmask & AFS_VOL_VTM_BAK) {
else if (vlocation->vldb.vidmask & AFS_VOL_VTM_BAK) {
vid = vlocation->vldb.vid[2]; vid = vlocation->vldb.vid[2];
voltype = AFSVL_BACKVOL; voltype = AFSVL_BACKVOL;
} } else {
else {
BUG(); BUG();
vid = 0; vid = 0;
voltype = 0; voltype = 0;
@ -604,9 +588,8 @@ static int afs_vlocation_update_begin(struct afs_vlocation *vlocation)
_leave(" = %d", ret); _leave(" = %d", ret);
return ret; return ret;
} /* end afs_vlocation_update_begin() */ }
/*****************************************************************************/
/* /*
* abandon updating a VL record * abandon updating a VL record
* - does not restart the update timer * - does not restart the update timer
@ -634,9 +617,8 @@ static void afs_vlocation_update_abandon(struct afs_vlocation *vlocation,
spin_unlock(&afs_vlocation_update_lock); spin_unlock(&afs_vlocation_update_lock);
_leave(""); _leave("");
} /* end afs_vlocation_update_abandon() */ }
/*****************************************************************************/
/* /*
* handle periodic update timeouts and busy retry timeouts * handle periodic update timeouts and busy retry timeouts
* - called from kafstimod * - called from kafstimod
@ -663,8 +645,7 @@ static void afs_vlocation_update_timer(struct afs_timer *timer)
if (afs_vlocation_update) { if (afs_vlocation_update) {
list_add(&vlocation->upd_op.link, list_add(&vlocation->upd_op.link,
&afs_vlocation_update_pendq); &afs_vlocation_update_pendq);
} } else {
else {
afs_get_vlocation(vlocation); afs_get_vlocation(vlocation);
afs_vlocation_update = vlocation; afs_vlocation_update = vlocation;
vlocation->upd_state = AFS_VLUPD_INPROGRESS; vlocation->upd_state = AFS_VLUPD_INPROGRESS;
@ -706,16 +687,13 @@ static void afs_vlocation_update_timer(struct afs_timer *timer)
_leave(""); _leave("");
return; return;
out_unlock2: out_unlock2:
spin_unlock(&afs_vlocation_update_lock); spin_unlock(&afs_vlocation_update_lock);
out_unlock1: out_unlock1:
spin_unlock(&vlocation->cell->vl_gylock); spin_unlock(&vlocation->cell->vl_gylock);
_leave(""); _leave("");
return; }
} /* end afs_vlocation_update_timer() */
/*****************************************************************************/
/* /*
* attend to an update operation upon which an event happened * attend to an update operation upon which an event happened
* - called in kafsasyncd context * - called in kafsasyncd context
@ -818,7 +796,7 @@ static void afs_vlocation_update_attend(struct afs_async_op *op)
} }
/* try contacting the next server */ /* try contacting the next server */
try_next: try_next:
vlocation->upd_busy_cnt = 0; vlocation->upd_busy_cnt = 0;
/* discard the server record */ /* discard the server record */
@ -856,15 +834,13 @@ static void afs_vlocation_update_attend(struct afs_async_op *op)
} }
/* abandon the update */ /* abandon the update */
abandon: abandon:
afs_vlocation_update_abandon(vlocation, AFS_VLUPD_SLEEP, ret); afs_vlocation_update_abandon(vlocation, AFS_VLUPD_SLEEP, ret);
afs_kafstimod_add_timer(&vlocation->upd_timer, HZ * 10); afs_kafstimod_add_timer(&vlocation->upd_timer, HZ * 10);
afs_put_vlocation(vlocation); afs_put_vlocation(vlocation);
_leave(" [abandoned]"); _leave(" [abandoned]");
}
} /* end afs_vlocation_update_attend() */
/*****************************************************************************/
/* /*
* deal with an update operation being discarded * deal with an update operation being discarded
* - called in kafsasyncd context when it's dying due to rmmod * - called in kafsasyncd context when it's dying due to rmmod
@ -883,9 +859,8 @@ static void afs_vlocation_update_discard(struct afs_async_op *op)
afs_put_vlocation(vlocation); afs_put_vlocation(vlocation);
_leave(""); _leave("");
} /* end afs_vlocation_update_discard() */ }
/*****************************************************************************/
/* /*
* match a VLDB record stored in the cache * match a VLDB record stored in the cache
* - may also load target from entry * - may also load target from entry
@ -908,9 +883,7 @@ static cachefs_match_val_t afs_vlocation_cache_match(void *target,
vlocation->valid = 1; vlocation->valid = 1;
_leave(" = SUCCESS [c->m]"); _leave(" = SUCCESS [c->m]");
return CACHEFS_MATCH_SUCCESS; return CACHEFS_MATCH_SUCCESS;
} } else if (memcmp(&vlocation->vldb, vldb, sizeof(*vldb)) != 0) {
/* need to update cache if cached info differs */
else if (memcmp(&vlocation->vldb, vldb, sizeof(*vldb)) != 0) {
/* delete if VIDs for this name differ */ /* delete if VIDs for this name differ */
if (memcmp(&vlocation->vldb.vid, if (memcmp(&vlocation->vldb.vid,
&vldb->vid, &vldb->vid,
@ -921,8 +894,7 @@ static cachefs_match_val_t afs_vlocation_cache_match(void *target,
_leave(" = UPDATE"); _leave(" = UPDATE");
return CACHEFS_MATCH_SUCCESS_UPDATE; return CACHEFS_MATCH_SUCCESS_UPDATE;
} } else {
else {
_leave(" = SUCCESS"); _leave(" = SUCCESS");
return CACHEFS_MATCH_SUCCESS; return CACHEFS_MATCH_SUCCESS;
} }
@ -930,10 +902,9 @@ static cachefs_match_val_t afs_vlocation_cache_match(void *target,
_leave(" = FAILED"); _leave(" = FAILED");
return CACHEFS_MATCH_FAILED; return CACHEFS_MATCH_FAILED;
} /* end afs_vlocation_cache_match() */ }
#endif #endif
/*****************************************************************************/
/* /*
* update a VLDB record stored in the cache * update a VLDB record stored in the cache
*/ */
@ -946,6 +917,5 @@ static void afs_vlocation_cache_update(void *source, void *entry)
_enter(""); _enter("");
*vldb = vlocation->vldb; *vldb = vlocation->vldb;
}
} /* end afs_vlocation_cache_update() */
#endif #endif

36
fs/afs/vnode.c
View File

@ -1,4 +1,4 @@
/* vnode.c: AFS vnode management /* AFS vnode management
* *
* Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com) * Written by David Howells (dhowells@redhat.com)
@ -43,7 +43,6 @@ struct cachefs_index_def afs_vnode_cache_index_def = {
}; };
#endif #endif
/*****************************************************************************/
/* /*
* handle a callback timing out * handle a callback timing out
* TODO: retain a ref to vnode struct for an outstanding callback timeout * TODO: retain a ref to vnode struct for an outstanding callback timeout
@ -78,9 +77,8 @@ static void afs_vnode_cb_timed_out(struct afs_timer *timer)
afs_put_server(oldserver); afs_put_server(oldserver);
_leave(""); _leave("");
} /* end afs_vnode_cb_timed_out() */ }
/*****************************************************************************/
/* /*
* finish off updating the recorded status of a file * finish off updating the recorded status of a file
* - starts callback expiry timer * - starts callback expiry timer
@ -105,7 +103,7 @@ static void afs_vnode_finalise_status_update(struct afs_vnode *vnode,
spin_lock(&afs_cb_hash_lock); spin_lock(&afs_cb_hash_lock);
list_move_tail(&vnode->cb_hash_link, list_move_tail(&vnode->cb_hash_link,
&afs_cb_hash(server, &vnode->fid)); &afs_cb_hash(server, &vnode->fid));
spin_unlock(&afs_cb_hash_lock); spin_unlock(&afs_cb_hash_lock);
/* swap ref to old callback server with that for new callback /* swap ref to old callback server with that for new callback
@ -122,13 +120,11 @@ static void afs_vnode_finalise_status_update(struct afs_vnode *vnode,
spin_lock(&server->cb_lock); spin_lock(&server->cb_lock);
list_add_tail(&vnode->cb_link, &server->cb_promises); list_add_tail(&vnode->cb_link, &server->cb_promises);
spin_unlock(&server->cb_lock); spin_unlock(&server->cb_lock);
} } else {
else {
/* same server */ /* same server */
oldserver = NULL; oldserver = NULL;
} }
} } else if (ret == -ENOENT) {
else if (ret == -ENOENT) {
/* the file was deleted - clear the callback timeout */ /* the file was deleted - clear the callback timeout */
oldserver = xchg(&vnode->cb_server, NULL); oldserver = xchg(&vnode->cb_server, NULL);
afs_kafstimod_del_timer(&vnode->cb_timeout); afs_kafstimod_del_timer(&vnode->cb_timeout);
@ -146,10 +142,8 @@ static void afs_vnode_finalise_status_update(struct afs_vnode *vnode,
afs_put_server(oldserver); afs_put_server(oldserver);
_leave(""); _leave("");
}
} /* end afs_vnode_finalise_status_update() */
/*****************************************************************************/
/* /*
* fetch file status from the volume * fetch file status from the volume
* - don't issue a fetch if: * - don't issue a fetch if:
@ -222,7 +216,7 @@ int afs_vnode_fetch_status(struct afs_vnode *vnode)
return vnode->flags & AFS_VNODE_DELETED ? -ENOENT : 0; return vnode->flags & AFS_VNODE_DELETED ? -ENOENT : 0;
} }
get_anyway: get_anyway:
/* okay... we're going to have to initiate the op */ /* okay... we're going to have to initiate the op */
vnode->update_cnt++; vnode->update_cnt++;
@ -247,9 +241,8 @@ int afs_vnode_fetch_status(struct afs_vnode *vnode)
_leave(" = %d", ret); _leave(" = %d", ret);
return ret; return ret;
} /* end afs_vnode_fetch_status() */ }
/*****************************************************************************/
/* /*
* fetch file data from the volume * fetch file data from the volume
* - TODO implement caching and server failover * - TODO implement caching and server failover
@ -290,10 +283,8 @@ int afs_vnode_fetch_data(struct afs_vnode *vnode,
_leave(" = %d", ret); _leave(" = %d", ret);
return ret; return ret;
}
} /* end afs_vnode_fetch_data() */
/*****************************************************************************/
/* /*
* break any outstanding callback on a vnode * break any outstanding callback on a vnode
* - only relevent to server that issued it * - only relevent to server that issued it
@ -337,9 +328,8 @@ int afs_vnode_give_up_callback(struct afs_vnode *vnode)
_leave(" = %d", ret); _leave(" = %d", ret);
return ret; return ret;
} /* end afs_vnode_give_up_callback() */ }
/*****************************************************************************/
/* /*
* match a vnode record stored in the cache * match a vnode record stored in the cache
*/ */
@ -371,10 +361,9 @@ static cachefs_match_val_t afs_vnode_cache_match(void *target,
_leave(" = SUCCESS"); _leave(" = SUCCESS");
return CACHEFS_MATCH_SUCCESS; return CACHEFS_MATCH_SUCCESS;
} /* end afs_vnode_cache_match() */ }
#endif #endif
/*****************************************************************************/
/* /*
* update a vnode record stored in the cache * update a vnode record stored in the cache
*/ */
@ -389,6 +378,5 @@ static void afs_vnode_cache_update(void *source, void *entry)
cvnode->vnode_id = vnode->fid.vnode; cvnode->vnode_id = vnode->fid.vnode;
cvnode->vnode_unique = vnode->fid.unique; cvnode->vnode_unique = vnode->fid.unique;
cvnode->data_version = vnode->status.version; cvnode->data_version = vnode->status.version;
}
} /* end afs_vnode_cache_update() */
#endif #endif

36
fs/afs/vnode.h
View File

@ -1,4 +1,4 @@
/* vnode.h: AFS vnode record /* AFS vnode record
* *
* Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com) * Written by David Howells (dhowells@redhat.com)
@ -9,24 +9,22 @@
* 2 of the License, or (at your option) any later version. * 2 of the License, or (at your option) any later version.
*/ */
#ifndef _LINUX_AFS_VNODE_H #ifndef AFS_VNODE_H
#define _LINUX_AFS_VNODE_H #define AFS_VNODE_H
#include <linux/fs.h> #include <linux/fs.h>
#include "server.h" #include "server.h"
#include "kafstimod.h" #include "kafstimod.h"
#include "cache.h" #include "cache.h"
#ifdef __KERNEL__
struct afs_rxfs_fetch_descriptor; struct afs_rxfs_fetch_descriptor;
/*****************************************************************************/ extern struct afs_timer_ops afs_vnode_cb_timed_out_ops;
/* /*
* vnode catalogue entry * vnode catalogue entry
*/ */
struct afs_cache_vnode struct afs_cache_vnode {
{
afs_vnodeid_t vnode_id; /* vnode ID */ afs_vnodeid_t vnode_id; /* vnode ID */
unsigned vnode_unique; /* vnode ID uniquifier */ unsigned vnode_unique; /* vnode ID uniquifier */
afs_dataversion_t data_version; /* data version */ afs_dataversion_t data_version; /* data version */
@ -36,12 +34,10 @@ struct afs_cache_vnode
extern struct cachefs_index_def afs_vnode_cache_index_def; extern struct cachefs_index_def afs_vnode_cache_index_def;
#endif #endif
/*****************************************************************************/
/* /*
* AFS inode private data * AFS inode private data
*/ */
struct afs_vnode struct afs_vnode {
{
struct inode vfs_inode; /* the VFS's inode record */ struct inode vfs_inode; /* the VFS's inode record */
struct afs_volume *volume; /* volume on which vnode resides */ struct afs_volume *volume; /* volume on which vnode resides */
@ -72,7 +68,7 @@ struct afs_vnode
static inline struct afs_vnode *AFS_FS_I(struct inode *inode) static inline struct afs_vnode *AFS_FS_I(struct inode *inode)
{ {
return container_of(inode,struct afs_vnode,vfs_inode); return container_of(inode, struct afs_vnode, vfs_inode);
} }
static inline struct inode *AFS_VNODE_TO_I(struct afs_vnode *vnode) static inline struct inode *AFS_VNODE_TO_I(struct afs_vnode *vnode)
@ -80,15 +76,9 @@ static inline struct inode *AFS_VNODE_TO_I(struct afs_vnode *vnode)
return &vnode->vfs_inode; return &vnode->vfs_inode;
} }
extern int afs_vnode_fetch_status(struct afs_vnode *vnode); extern int afs_vnode_fetch_status(struct afs_vnode *);
extern int afs_vnode_fetch_data(struct afs_vnode *,
struct afs_rxfs_fetch_descriptor *);
extern int afs_vnode_give_up_callback(struct afs_vnode *);
extern int afs_vnode_fetch_data(struct afs_vnode *vnode, #endif /* AFS_VNODE_H */
struct afs_rxfs_fetch_descriptor *desc);
extern int afs_vnode_give_up_callback(struct afs_vnode *vnode);
extern struct afs_timer_ops afs_vnode_cb_timed_out_ops;
#endif /* __KERNEL__ */
#endif /* _LINUX_AFS_VNODE_H */

58
fs/afs/volume.c
View File

@ -1,4 +1,4 @@
/* volume.c: AFS volume management /* AFS volume management
* *
* Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com) * Written by David Howells (dhowells@redhat.com)
@ -43,7 +43,6 @@ struct cachefs_index_def afs_volume_cache_index_def = {
}; };
#endif #endif
/*****************************************************************************/
/* /*
* lookup a volume by name * lookup a volume by name
* - this can be one of the following: * - this can be one of the following:
@ -97,14 +96,11 @@ int afs_volume_lookup(const char *name, struct afs_cell *cell, int rwpath,
if (strcmp(suffix, ".readonly") == 0) { if (strcmp(suffix, ".readonly") == 0) {
type = AFSVL_ROVOL; type = AFSVL_ROVOL;
force = 1; force = 1;
} } else if (strcmp(suffix, ".backup") == 0) {
else if (strcmp(suffix, ".backup") == 0) {
type = AFSVL_BACKVOL; type = AFSVL_BACKVOL;
force = 1; force = 1;
} } else if (suffix[1] == 0) {
else if (suffix[1] == 0) { } else {
}
else {
suffix = NULL; suffix = NULL;
} }
} }
@ -116,8 +112,7 @@ int afs_volume_lookup(const char *name, struct afs_cell *cell, int rwpath,
cellname = name; cellname = name;
cellnamesz = volname - name; cellnamesz = volname - name;
volname++; volname++;
} } else {
else {
volname = name; volname = name;
cellname = NULL; cellname = NULL;
cellnamesz = 0; cellnamesz = 0;
@ -139,8 +134,7 @@ int afs_volume_lookup(const char *name, struct afs_cell *cell, int rwpath,
cellname ?: ""); cellname ?: "");
goto error; goto error;
} }
} } else {
else {
afs_get_cell(cell); afs_get_cell(cell);
} }
@ -161,14 +155,11 @@ int afs_volume_lookup(const char *name, struct afs_cell *cell, int rwpath,
if (force) { if (force) {
if (!(srvtmask & (1 << type))) if (!(srvtmask & (1 << type)))
goto error; goto error;
} } else if (srvtmask & AFS_VOL_VTM_RO) {
else if (srvtmask & AFS_VOL_VTM_RO) {
type = AFSVL_ROVOL; type = AFSVL_ROVOL;
} } else if (srvtmask & AFS_VOL_VTM_RW) {
else if (srvtmask & AFS_VOL_VTM_RW) {
type = AFSVL_RWVOL; type = AFSVL_RWVOL;
} } else {
else {
goto error; goto error;
} }
@ -225,23 +216,23 @@ int afs_volume_lookup(const char *name, struct afs_cell *cell, int rwpath,
vlocation->vols[type] = volume; vlocation->vols[type] = volume;
success: success:
_debug("kAFS selected %s volume %08x", _debug("kAFS selected %s volume %08x",
afs_voltypes[volume->type], volume->vid); afs_voltypes[volume->type], volume->vid);
*_volume = volume; *_volume = volume;
ret = 0; ret = 0;
/* clean up */ /* clean up */
error_up: error_up:
up_write(&cell->vl_sem); up_write(&cell->vl_sem);
error: error:
afs_put_vlocation(vlocation); afs_put_vlocation(vlocation);
afs_put_cell(cell); afs_put_cell(cell);
_leave(" = %d (%p)", ret, volume); _leave(" = %d (%p)", ret, volume);
return ret; return ret;
error_discard: error_discard:
up_write(&cell->vl_sem); up_write(&cell->vl_sem);
for (loop = volume->nservers - 1; loop >= 0; loop--) for (loop = volume->nservers - 1; loop >= 0; loop--)
@ -249,9 +240,8 @@ int afs_volume_lookup(const char *name, struct afs_cell *cell, int rwpath,
kfree(volume); kfree(volume);
goto error; goto error;
} /* end afs_volume_lookup() */ }
/*****************************************************************************/
/* /*
* destroy a volume record * destroy a volume record
*/ */
@ -296,9 +286,8 @@ void afs_put_volume(struct afs_volume *volume)
kfree(volume); kfree(volume);
_leave(" [destroyed]"); _leave(" [destroyed]");
} /* end afs_put_volume() */ }
/*****************************************************************************/
/* /*
* pick a server to use to try accessing this volume * pick a server to use to try accessing this volume
* - returns with an elevated usage count on the server chosen * - returns with an elevated usage count on the server chosen
@ -373,9 +362,8 @@ int afs_volume_pick_fileserver(struct afs_volume *volume,
up_read(&volume->server_sem); up_read(&volume->server_sem);
_leave(" = %d", ret); _leave(" = %d", ret);
return ret; return ret;
} /* end afs_volume_pick_fileserver() */ }
/*****************************************************************************/
/* /*
* release a server after use * release a server after use
* - releases the ref on the server struct that was acquired by picking * - releases the ref on the server struct that was acquired by picking
@ -469,16 +457,14 @@ int afs_volume_release_fileserver(struct afs_volume *volume,
return 1; return 1;
/* tell the caller to loop around and try the next server */ /* tell the caller to loop around and try the next server */
try_next_server_upw: try_next_server_upw:
up_write(&volume->server_sem); up_write(&volume->server_sem);
try_next_server: try_next_server:
afs_put_server(server); afs_put_server(server);
_leave(" [try next server]"); _leave(" [try next server]");
return 0; return 0;
}
} /* end afs_volume_release_fileserver() */
/*****************************************************************************/
/* /*
* match a volume hash record stored in the cache * match a volume hash record stored in the cache
*/ */
@ -498,10 +484,9 @@ static cachefs_match_val_t afs_volume_cache_match(void *target,
_leave(" = FAILED"); _leave(" = FAILED");
return CACHEFS_MATCH_FAILED; return CACHEFS_MATCH_FAILED;
} /* end afs_volume_cache_match() */ }
#endif #endif
/*****************************************************************************/
/* /*
* update a volume hash record stored in the cache * update a volume hash record stored in the cache
*/ */
@ -514,6 +499,5 @@ static void afs_volume_cache_update(void *source, void *entry)
_enter(""); _enter("");
vhash->vtype = volume->type; vhash->vtype = volume->type;
}
} /* end afs_volume_cache_update() */
#endif #endif

52
fs/afs/volume.h
View File

@ -1,4 +1,4 @@
/* volume.h: AFS volume management /* AFS volume management
* *
* Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com) * Written by David Howells (dhowells@redhat.com)
@ -9,8 +9,8 @@
* 2 of the License, or (at your option) any later version. * 2 of the License, or (at your option) any later version.
*/ */
#ifndef _LINUX_AFS_VOLUME_H #ifndef AFS_VOLUME_H
#define _LINUX_AFS_VOLUME_H #define AFS_VOLUME_H
#include "types.h" #include "types.h"
#include "fsclient.h" #include "fsclient.h"
@ -23,15 +23,12 @@ typedef enum {
AFS_VLUPD_PENDING, /* on pending queue */ AFS_VLUPD_PENDING, /* on pending queue */
AFS_VLUPD_INPROGRESS, /* op in progress */ AFS_VLUPD_INPROGRESS, /* op in progress */
AFS_VLUPD_BUSYSLEEP, /* sleeping because server returned EBUSY */ AFS_VLUPD_BUSYSLEEP, /* sleeping because server returned EBUSY */
} __attribute__((packed)) afs_vlocation_upd_t; } __attribute__((packed)) afs_vlocation_upd_t;
/*****************************************************************************/
/* /*
* entry in the cached volume location catalogue * entry in the cached volume location catalogue
*/ */
struct afs_cache_vlocation struct afs_cache_vlocation {
{
uint8_t name[64]; /* volume name (lowercase, padded with NULs) */ uint8_t name[64]; /* volume name (lowercase, padded with NULs) */
uint8_t nservers; /* number of entries used in servers[] */ uint8_t nservers; /* number of entries used in servers[] */
uint8_t vidmask; /* voltype mask for vid[] */ uint8_t vidmask; /* voltype mask for vid[] */
@ -49,12 +46,10 @@ struct afs_cache_vlocation
extern struct cachefs_index_def afs_vlocation_cache_index_def; extern struct cachefs_index_def afs_vlocation_cache_index_def;
#endif #endif
/*****************************************************************************/
/* /*
* volume -> vnode hash table entry * volume -> vnode hash table entry
*/ */
struct afs_cache_vhash struct afs_cache_vhash {
{
afs_voltype_t vtype; /* which volume variation */ afs_voltype_t vtype; /* which volume variation */
uint8_t hash_bucket; /* which hash bucket this represents */ uint8_t hash_bucket; /* which hash bucket this represents */
} __attribute__((packed)); } __attribute__((packed));
@ -63,12 +58,10 @@ struct afs_cache_vhash
extern struct cachefs_index_def afs_volume_cache_index_def; extern struct cachefs_index_def afs_volume_cache_index_def;
#endif #endif
/*****************************************************************************/
/* /*
* AFS volume location record * AFS volume location record
*/ */
struct afs_vlocation struct afs_vlocation {
{
atomic_t usage; atomic_t usage;
struct list_head link; /* link in cell volume location list */ struct list_head link; /* link in cell volume location list */
struct afs_timer timeout; /* decaching timer */ struct afs_timer timeout; /* decaching timer */
@ -90,22 +83,18 @@ struct afs_vlocation
unsigned short valid; /* T if valid */ unsigned short valid; /* T if valid */
}; };
extern int afs_vlocation_lookup(struct afs_cell *cell, extern int afs_vlocation_lookup(struct afs_cell *, const char *, unsigned,
const char *name, struct afs_vlocation **);
unsigned namesz,
struct afs_vlocation **_vlocation);
#define afs_get_vlocation(V) do { atomic_inc(&(V)->usage); } while(0) #define afs_get_vlocation(V) do { atomic_inc(&(V)->usage); } while(0)
extern void afs_put_vlocation(struct afs_vlocation *vlocation); extern void afs_put_vlocation(struct afs_vlocation *);
extern void afs_vlocation_do_timeout(struct afs_vlocation *vlocation); extern void afs_vlocation_do_timeout(struct afs_vlocation *);
/*****************************************************************************/
/* /*
* AFS volume access record * AFS volume access record
*/ */
struct afs_volume struct afs_volume {
{
atomic_t usage; atomic_t usage;
struct afs_cell *cell; /* cell to which belongs (unrefd ptr) */ struct afs_cell *cell; /* cell to which belongs (unrefd ptr) */
struct afs_vlocation *vlocation; /* volume location */ struct afs_vlocation *vlocation; /* volume location */
@ -121,20 +110,17 @@ struct afs_volume
struct rw_semaphore server_sem; /* lock for accessing current server */ struct rw_semaphore server_sem; /* lock for accessing current server */
}; };
extern int afs_volume_lookup(const char *name, extern int afs_volume_lookup(const char *, struct afs_cell *, int,
struct afs_cell *cell, struct afs_volume **);
int rwpath,
struct afs_volume **_volume);
#define afs_get_volume(V) do { atomic_inc(&(V)->usage); } while(0) #define afs_get_volume(V) do { atomic_inc(&(V)->usage); } while(0)
extern void afs_put_volume(struct afs_volume *volume); extern void afs_put_volume(struct afs_volume *);
extern int afs_volume_pick_fileserver(struct afs_volume *volume, extern int afs_volume_pick_fileserver(struct afs_volume *,
struct afs_server **_server); struct afs_server **);
extern int afs_volume_release_fileserver(struct afs_volume *volume, extern int afs_volume_release_fileserver(struct afs_volume *,
struct afs_server *server, struct afs_server *, int);
int result);
#endif /* _LINUX_AFS_VOLUME_H */ #endif /* AFS_VOLUME_H */