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gfs2: Automatically set GFS2_DIF_SYSTEM flag on system files 

When new files and directories are created inside a parent directory
we automatically inherit the GFS2_DIF_SYSTEM flag (if set) and assign
it to the new file/dirs.

All new system files/dirs created in the metafs by, say gfs2_jadd,
will have this flag set because they will have parent directories in
the metafs whose GFS2_DIF_SYSTEM flag has already been set (most likely
by a previous mkfs.gfs2)

Signed-off-by: Abhi Das <adas@redhat.com>
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
steinar/wifi_calib_4_9_kernel
Abhi Das 2015-11-10 15:07:26 -06:00 committed by Bob Peterson
parent 42d4ebb42a
commit acc546fd61
2 changed files with 7 additions and 2 deletions
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4
fs/gfs2/file.c
View File

@ -298,9 +298,9 @@ static int gfs2_set_flags(struct file *filp, u32 __user *ptr)
gfsflags &= ~GFS2_DIF_TOPDIR;
if (gfsflags & GFS2_DIF_INHERIT_JDATA)
gfsflags ^= (GFS2_DIF_JDATA | GFS2_DIF_INHERIT_JDATA);
return do_gfs2_set_flags(filp, gfsflags, ~0);
return do_gfs2_set_flags(filp, gfsflags, ~GFS2_DIF_SYSTEM);
}
return do_gfs2_set_flags(filp, gfsflags, ~GFS2_DIF_JDATA);
return do_gfs2_set_flags(filp, gfsflags, ~(GFS2_DIF_SYSTEM | GFS2_DIF_JDATA));
}
static long gfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)

5
fs/gfs2/inode.c
View File

@ -685,6 +685,11 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry,
ip->i_entries = 2;
break;
}
/* Force SYSTEM flag on all files and subdirs of a SYSTEM directory */
if (dip->i_diskflags & GFS2_DIF_SYSTEM)
ip->i_diskflags |= GFS2_DIF_SYSTEM;
gfs2_set_inode_flags(inode);
if ((GFS2_I(d_inode(sdp->sd_root_dir)) == dip) ||