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[PATCH] knfsd: nfsd4: acls: don't return explicit mask

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Return just the effective permissions, and forget about the mask.  It isn't
worth the complexity.

WARNING: This breaks backwards compatibility with overly-picky nfsv4->posix
acl translation, as may has been included in some patched versions of libacl.
To our knowledge no such version was every distributed by anyone outside citi.

Signed-off-by: J. Bruce Fields <bfields@citi.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>
This commit is contained in:
J. Bruce Fields 2007-02-16 01:28:34 -08:00 committed by Linus Torvalds
parent f34f924274
commit f43daf6787
1 changed files with 7 additions and 18 deletions
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25
fs/nfsd/nfs4acl.c
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@ -180,7 +180,8 @@ _posix_to_nfsv4_one(struct posix_acl *pacl, struct nfs4_acl *acl,
unsigned int flags)
{
struct posix_acl_entry *pa, *pe, *group_owner_entry;
u32 mask, mask_mask;
u32 mask;
unsigned short mask_mask;
int eflag = ((flags & NFS4_ACL_TYPE_DEFAULT) ?
NFS4_INHERITANCE_FLAGS : 0);
@ -188,9 +189,9 @@ _posix_to_nfsv4_one(struct posix_acl *pacl, struct nfs4_acl *acl,
pe = pacl->a_entries + pacl->a_count;
pa = pe - 2; /* if mask entry exists, it's second from the last. */
if (pa->e_tag == ACL_MASK)
mask_mask = deny_mask(mask_from_posix(pa->e_perm, flags), flags);
mask_mask = pa->e_perm;
else
mask_mask = 0;
mask_mask = S_IRWXO;
pa = pacl->a_entries;
BUG_ON(pa->e_tag != ACL_USER_OBJ);
@ -199,10 +200,7 @@ _posix_to_nfsv4_one(struct posix_acl *pacl, struct nfs4_acl *acl,
pa++;
while (pa->e_tag == ACL_USER) {
mask = mask_from_posix(pa->e_perm, flags);
nfs4_acl_add_ace(acl, NFS4_ACE_ACCESS_DENIED_ACE_TYPE,
eflag, mask_mask, NFS4_ACL_WHO_NAMED, pa->e_id);
mask = mask_from_posix(pa->e_perm & mask_mask, flags);
nfs4_acl_add_pair(acl, eflag, mask,
NFS4_ACL_WHO_NAMED, pa->e_id, flags);
pa++;
@ -213,24 +211,15 @@ _posix_to_nfsv4_one(struct posix_acl *pacl, struct nfs4_acl *acl,
/* allow ACEs */
if (pacl->a_count > 3) {
BUG_ON(pa->e_tag != ACL_GROUP_OBJ);
nfs4_acl_add_ace(acl, NFS4_ACE_ACCESS_DENIED_ACE_TYPE,
NFS4_ACE_IDENTIFIER_GROUP | eflag, mask_mask,
NFS4_ACL_WHO_GROUP, 0);
}
group_owner_entry = pa;
mask = mask_from_posix(pa->e_perm, flags);
mask = mask_from_posix(pa->e_perm & mask_mask, flags);
nfs4_acl_add_ace(acl, NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE,
NFS4_ACE_IDENTIFIER_GROUP | eflag, mask,
NFS4_ACL_WHO_GROUP, 0);
pa++;
while (pa->e_tag == ACL_GROUP) {
mask = mask_from_posix(pa->e_perm, flags);
nfs4_acl_add_ace(acl, NFS4_ACE_ACCESS_DENIED_ACE_TYPE,
NFS4_ACE_IDENTIFIER_GROUP | eflag, mask_mask,
NFS4_ACL_WHO_NAMED, pa->e_id);
mask = mask_from_posix(pa->e_perm & mask_mask, flags);
nfs4_acl_add_ace(acl, NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE,
NFS4_ACE_IDENTIFIER_GROUP | eflag, mask,
NFS4_ACL_WHO_NAMED, pa->e_id);