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fs: provide rcu-walk aware permission i_ops

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Signed-off-by: Nick Piggin <[email protected]>
This commit is contained in:
Nick Piggin 2011-01-07 17:49:58 +11:00
commit b74c79e993
60 changed files with 287 additions and 146 deletions
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7
fs/hostfs/hostfs_kern.c
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@ -749,11 +749,14 @@ int hostfs_rename(struct inode *from_ino, struct dentry *from,
return err;
}
int hostfs_permission(struct inode *ino, int desired)
int hostfs_permission(struct inode *ino, int desired, unsigned int flags)
{
char *name;
int r = 0, w = 0, x = 0, err;
if (flags & IPERM_FLAG_RCU)
return -ECHILD;
if (desired & MAY_READ) r = 1;
if (desired & MAY_WRITE) w = 1;
if (desired & MAY_EXEC) x = 1;
@ -768,7 +771,7 @@ int hostfs_permission(struct inode *ino, int desired)
err = access_file(name, r, w, x);
__putname(name);
if (!err)
err = generic_permission(ino, desired, NULL);
err = generic_permission(ino, desired, flags, NULL);
return err;
}