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NFSD: Check acl returned from get_acl/posix_acl_from_mode
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Commit 4ac7249 (nfsd: use get_acl and ->set_acl)
don't check the acl returned from get_acl()/posix_acl_from_mode().

Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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Kinglong Mee authored and J. Bruce Fields committed Jul 11, 2014
1 parent 2559429 commit 35e634b
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Showing 3 changed files with 21 additions and 14 deletions.
8 changes: 4 additions & 4 deletions fs/nfsd/nfs2acl.c
Original file line number Diff line number Diff line change
Expand Up @@ -54,14 +54,14 @@ static __be32 nfsacld_proc_getacl(struct svc_rqst * rqstp,

if (resp->mask & (NFS_ACL|NFS_ACLCNT)) {
acl = get_acl(inode, ACL_TYPE_ACCESS);
if (IS_ERR(acl)) {
nfserr = nfserrno(PTR_ERR(acl));
goto fail;
}
if (acl == NULL) {
/* Solaris returns the inode's minimum ACL. */
acl = posix_acl_from_mode(inode->i_mode, GFP_KERNEL);
}
if (IS_ERR(acl)) {
nfserr = nfserrno(PTR_ERR(acl));
goto fail;
}
resp->acl_access = acl;
}
if (resp->mask & (NFS_DFACL|NFS_DFACLCNT)) {
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8 changes: 4 additions & 4 deletions fs/nfsd/nfs3acl.c
Original file line number Diff line number Diff line change
Expand Up @@ -47,14 +47,14 @@ static __be32 nfsd3_proc_getacl(struct svc_rqst * rqstp,

if (resp->mask & (NFS_ACL|NFS_ACLCNT)) {
acl = get_acl(inode, ACL_TYPE_ACCESS);
if (IS_ERR(acl)) {
nfserr = nfserrno(PTR_ERR(acl));
goto fail;
}
if (acl == NULL) {
/* Solaris returns the inode's minimum ACL. */
acl = posix_acl_from_mode(inode->i_mode, GFP_KERNEL);
}
if (IS_ERR(acl)) {
nfserr = nfserrno(PTR_ERR(acl));
goto fail;
}
resp->acl_access = acl;
}
if (resp->mask & (NFS_DFACL|NFS_DFACLCNT)) {
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19 changes: 13 additions & 6 deletions fs/nfsd/nfs4acl.c
Original file line number Diff line number Diff line change
Expand Up @@ -146,17 +146,23 @@ nfsd4_get_nfs4_acl(struct svc_rqst *rqstp, struct dentry *dentry,
int size = 0;

pacl = get_acl(inode, ACL_TYPE_ACCESS);
if (!pacl) {
if (!pacl)
pacl = posix_acl_from_mode(inode->i_mode, GFP_KERNEL);
if (IS_ERR(pacl))
return PTR_ERR(pacl);
}

if (IS_ERR(pacl))
return PTR_ERR(pacl);

/* allocate for worst case: one (deny, allow) pair each: */
size += 2 * pacl->a_count;

if (S_ISDIR(inode->i_mode)) {
flags = NFS4_ACL_DIR;
dpacl = get_acl(inode, ACL_TYPE_DEFAULT);
if (IS_ERR(dpacl)) {
error = PTR_ERR(dpacl);
goto rel_pacl;
}

if (dpacl)
size += 2 * dpacl->a_count;
}
Expand All @@ -173,9 +179,10 @@ nfsd4_get_nfs4_acl(struct svc_rqst *rqstp, struct dentry *dentry,
if (dpacl)
_posix_to_nfsv4_one(dpacl, *acl, flags | NFS4_ACL_TYPE_DEFAULT);

out:
posix_acl_release(pacl);
out:
posix_acl_release(dpacl);
rel_pacl:
posix_acl_release(pacl);
return error;
}

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