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| author | Chuck Lever <chuck.lever@oracle.com> | 2011-01-21 06:05:38 +0300 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2011-01-25 23:24:47 +0300 |
| commit | f61f6da0d53842e849bab7f69e1431bd3de1136d (patch) | |
| tree | 8433904f645695338b98d3dc831631ffd6f129e5 /include/linux/posix_acl.h | |
| parent | 731f3f482ad3b2c58a1af2d0a9a634a82803706a (diff) | |
| download | linux-f61f6da0d53842e849bab7f69e1431bd3de1136d.tar.xz | |
NFS: Prevent memory allocation failure in nfsacl_encode()
nfsacl_encode() allocates memory in certain cases. This of course
is not guaranteed to work.
Since commit 9f06c719 "SUNRPC: New xdr_streams XDR encoder API", the
kernel's XDR encoders can't return a result indicating possibly a
failure, so a memory allocation failure in nfsacl_encode() has become
fatal (ie, the XDR code Oopses) in some cases.
However, the allocated memory is a tiny fixed amount, on the order
of 40-50 bytes. We can easily use a stack-allocated buffer for
this, with only a wee bit of nose-holding.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'include/linux/posix_acl.h')
| -rw-r--r-- | include/linux/posix_acl.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/posix_acl.h b/include/linux/posix_acl.h index d68283a898bb..54211c1cd926 100644 --- a/include/linux/posix_acl.h +++ b/include/linux/posix_acl.h @@ -71,6 +71,7 @@ posix_acl_release(struct posix_acl *acl) /* posix_acl.c */ +extern void posix_acl_init(struct posix_acl *, int); extern struct posix_acl *posix_acl_alloc(int, gfp_t); extern struct posix_acl *posix_acl_clone(const struct posix_acl *, gfp_t); extern int posix_acl_valid(const struct posix_acl *); |