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authorJ. Bruce Fields <bfields@fieldses.org>2007-07-17 04:04:37 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-17 10:23:07 -0700
commit4b2ca38ad6c44ed0442092a829e6e954bf3580af (patch)
treed3256d5a1e2a0276326f8abb2e6aabc3df3812da /fs/nfsd/nfs4acl.c
parent0ac68d17996eb421dde51452b89d5545ba07c6fe (diff)
knfsd: nfsd4: fix handling of acl errrors
nfs4_acl_nfsv4_to_posix() returns an error and returns any posix acls calculated in two caller-provided pointers. It was setting these pointers to -errno in some error cases, resulting in nfsd4_set_nfs4_acl() calling posix_acl_release() with a -errno as an argument. Fix both the caller and the callee, by modifying nfsd4_set_nfs4_acl() to stop relying on the passed-in-pointers being left as NULL in the error case, and by modifying nfs4_acl_nfsv4_to_posix() to stop returning garbage in those pointers. Thanks to Alex Soule for reporting the bug. Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu> Cc: Alexander Soule <soule@umich.edu> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/nfsd/nfs4acl.c')
-rw-r--r--fs/nfsd/nfs4acl.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/nfsd/nfs4acl.c b/fs/nfsd/nfs4acl.c
index 4adb5ee4759..b6ed38380ab 100644
--- a/fs/nfsd/nfs4acl.c
+++ b/fs/nfsd/nfs4acl.c
@@ -737,13 +737,16 @@ int nfs4_acl_nfsv4_to_posix(struct nfs4_acl *acl, struct posix_acl **pacl,
*pacl = posix_state_to_acl(&effective_acl_state, flags);
if (IS_ERR(*pacl)) {
ret = PTR_ERR(*pacl);
+ *pacl = NULL;
goto out_dstate;
}
*dpacl = posix_state_to_acl(&default_acl_state,
flags | NFS4_ACL_TYPE_DEFAULT);
if (IS_ERR(*dpacl)) {
ret = PTR_ERR(*dpacl);
+ *dpacl = NULL;
posix_acl_release(*pacl);
+ *pacl = NULL;
goto out_dstate;
}
sort_pacl(*pacl);