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authorChuck Lever <chuck.lever@oracle.com>2009-04-23 19:33:10 -0400
committerJ. Bruce Fields <bfields@citi.umich.edu>2009-04-28 13:54:30 -0400
commit3d72ab8fdd44c872633b210dd1a4afd2910d0bbb (patch)
tree78b8ffba38d32d99b518c0efba19bffacc034b22 /fs/nfsd/nfsctl.c
parent017cb47f46722f29d101a709a2094d151111ed6d (diff)
NFSD: Stricter buffer size checking in write_recoverydir()
While it's not likely a pathname will be longer than SIMPLE_TRANSACTION_SIZE, we should be more careful about just plopping it into the output buffer without bounds checking. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Diffstat (limited to 'fs/nfsd/nfsctl.c')
-rw-r--r--fs/nfsd/nfsctl.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index b64a7fbfccf5..c4843467cfd4 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -1260,8 +1260,9 @@ static ssize_t __write_recoverydir(struct file *file, char *buf, size_t size)
1260 1260
1261 status = nfs4_reset_recoverydir(recdir); 1261 status = nfs4_reset_recoverydir(recdir);
1262 } 1262 }
1263 sprintf(buf, "%s\n", nfs4_recoverydir()); 1263
1264 return strlen(buf); 1264 return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%s\n",
1265 nfs4_recoverydir());
1265} 1266}
1266 1267
1267/** 1268/**