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evm: imbed evm_inode_post_setattr 

Changing the inode's metadata may require the 'security.evm' extended
attribute to be re-calculated and updated.

Signed-off-by: Mimi Zohar <zohar@us.ibm.com>
Acked-by: Serge Hallyn <serge.hallyn@ubuntu.com>
wifi-calibration
Mimi Zohar 2011-03-09 14:39:57 -05:00
parent c7b87de23b
commit 975d294373
2 changed files with 10 additions and 1 deletions
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5
fs/attr.c
View File

@ -13,6 +13,7 @@
#include <linux/fsnotify.h>
#include <linux/fcntl.h>
#include <linux/security.h>
#include <linux/evm.h>
/**
* inode_change_ok - check if attribute changes to an inode are allowed
@ -243,8 +244,10 @@ int notify_change(struct dentry * dentry, struct iattr * attr)
if (ia_valid & ATTR_SIZE)
up_write(&dentry->d_inode->i_alloc_sem);
if (!error)
if (!error) {
fsnotify_change(dentry, ia_valid);
evm_inode_post_setattr(dentry, ia_valid);
}
return error;
}

6
include/linux/evm.h
View File

@ -15,6 +15,7 @@ extern enum integrity_status evm_verifyxattr(struct dentry *dentry,
const char *xattr_name,
void *xattr_value,
size_t xattr_value_len);
extern void evm_inode_post_setattr(struct dentry *dentry, int ia_valid);
extern int evm_inode_setxattr(struct dentry *dentry, const char *name,
const void *value, size_t size);
extern void evm_inode_post_setxattr(struct dentry *dentry,
@ -35,6 +36,11 @@ static inline enum integrity_status evm_verifyxattr(struct dentry *dentry,
}
#endif
static inline void evm_inode_post_setattr(struct dentry *dentry, int ia_valid)
{
return;
}
static inline int evm_inode_setxattr(struct dentry *dentry, const char *name,
const void *value, size_t size)
{