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| author | J.Bruce Fields <bfields@fieldses.org> | 2006-10-04 02:16:12 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-04 07:55:20 -0700 |
| commit | b548edc2dd9440c561f3302cb9f212ef2d06a8ef (patch) | |
| tree | 4e6c2e3c1907747abd294bc1bbfcd6439cbfbd4c | |
| parent | 09229edb68a3961db54174a2725055bd1589b4b8 (diff) | |
| download | linux-3.10-b548edc2dd9440c561f3302cb9f212ef2d06a8ef.tar.gz linux-3.10-b548edc2dd9440c561f3302cb9f212ef2d06a8ef.tar.bz2 linux-3.10-b548edc2dd9440c561f3302cb9f212ef2d06a8ef.zip | |
[PATCH] knfsd: nfsd4: acls: fix inheritance
We can be a little more flexible about the flags allowed for inheritance (in
particular, we can deal with either the presence or the absence of
INHERIT_ONLY), but we should probably reject other combinations that we don't
understand.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | fs/nfsd/nfs4acl.c | 43 |
1 files changed, 30 insertions, 13 deletions
diff --git a/fs/nfsd/nfs4acl.c b/fs/nfsd/nfs4acl.c index f2f66b3da7a..59fdd9c1d3e 100644 --- a/fs/nfsd/nfs4acl.c +++ b/fs/nfsd/nfs4acl.c @@ -63,6 +63,8 @@ #define NFS4_INHERITANCE_FLAGS (NFS4_ACE_FILE_INHERIT_ACE \ | NFS4_ACE_DIRECTORY_INHERIT_ACE | NFS4_ACE_INHERIT_ONLY_ACE) +#define NFS4_SUPPORTED_FLAGS (NFS4_INHERITANCE_FLAGS | NFS4_ACE_IDENTIFIER_GROUP) + #define MASK_EQUAL(mask1, mask2) \ ( ((mask1) & NFS4_ACE_MASK_ALL) == ((mask2) & NFS4_ACE_MASK_ALL) ) @@ -721,22 +723,37 @@ nfs4_acl_split(struct nfs4_acl *acl, struct nfs4_acl *dacl) ace->type != NFS4_ACE_ACCESS_DENIED_ACE_TYPE) return -EINVAL; - if ((ace->flag & NFS4_INHERITANCE_FLAGS) - != NFS4_INHERITANCE_FLAGS) - continue; + if (ace->flag & ~NFS4_SUPPORTED_FLAGS) + return -EINVAL; - error = nfs4_acl_add_ace(dacl, ace->type, ace->flag, + switch (ace->flag & NFS4_INHERITANCE_FLAGS) { + case 0: + /* Leave this ace in the effective acl: */ + continue; + case NFS4_INHERITANCE_FLAGS: + /* Add this ace to the default acl and remove it + * from the effective acl: */ + error = nfs4_acl_add_ace(dacl, ace->type, ace->flag, ace->access_mask, ace->whotype, ace->who); - if (error < 0) - goto out; - - list_del(h); - kfree(ace); - acl->naces--; + if (error) + return error; + list_del(h); + kfree(ace); + acl->naces--; + break; + case NFS4_INHERITANCE_FLAGS & ~NFS4_ACE_INHERIT_ONLY_ACE: + /* Add this ace to the default, but leave it in + * the effective acl as well: */ + error = nfs4_acl_add_ace(dacl, ace->type, ace->flag, + ace->access_mask, ace->whotype, ace->who); + if (error) + return error; + break; + default: + return -EINVAL; + } } - -out: - return error; + return 0; } static short |