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authorLinus Torvalds <torvalds@linux-foundation.org>2009-11-19 16:43:19 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2009-11-19 16:43:19 -0500
commite6236f781cc7777a2e74d256c478bb07496f35ec (patch)
tree559a5816b803ec3f86dae82bdb9e5d3f9c20deee
parent308efab5e231d1510cd35931d87629bf5171caae (diff)
parent1e360a60b24ad8f8685af66fa6de10ce46693a4b (diff)
Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6
* 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6: SUNRPC: Address buffer overrun in rpc_uaddr2sockaddr() NFSv4: Fix a cache validation bug which causes getcwd() to return ENOENT
-rw-r--r--fs/nfs/nfs4proc.c2
-rw-r--r--net/sunrpc/addr.c18
2 files changed, 9 insertions, 11 deletions
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index ff37454fa783..741a562177fc 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -2767,7 +2767,7 @@ static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
2767 .pages = &page, 2767 .pages = &page,
2768 .pgbase = 0, 2768 .pgbase = 0,
2769 .count = count, 2769 .count = count,
2770 .bitmask = NFS_SERVER(dentry->d_inode)->cache_consistency_bitmask, 2770 .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask,
2771 }; 2771 };
2772 struct nfs4_readdir_res res; 2772 struct nfs4_readdir_res res;
2773 struct rpc_message msg = { 2773 struct rpc_message msg = {
diff --git a/net/sunrpc/addr.c b/net/sunrpc/addr.c
index 22e8fd89477f..c7450c8f0a7c 100644
--- a/net/sunrpc/addr.c
+++ b/net/sunrpc/addr.c
@@ -306,24 +306,25 @@ EXPORT_SYMBOL_GPL(rpc_sockaddr2uaddr);
306 * @sap: buffer into which to plant socket address 306 * @sap: buffer into which to plant socket address
307 * @salen: size of buffer 307 * @salen: size of buffer
308 * 308 *
309 * @uaddr does not have to be '\0'-terminated, but strict_strtoul() and
310 * rpc_pton() require proper string termination to be successful.
311 *
309 * Returns the size of the socket address if successful; otherwise 312 * Returns the size of the socket address if successful; otherwise
310 * zero is returned. 313 * zero is returned.
311 */ 314 */
312size_t rpc_uaddr2sockaddr(const char *uaddr, const size_t uaddr_len, 315size_t rpc_uaddr2sockaddr(const char *uaddr, const size_t uaddr_len,
313 struct sockaddr *sap, const size_t salen) 316 struct sockaddr *sap, const size_t salen)
314{ 317{
315 char *c, buf[RPCBIND_MAXUADDRLEN]; 318 char *c, buf[RPCBIND_MAXUADDRLEN + sizeof('\0')];
316 unsigned long portlo, porthi; 319 unsigned long portlo, porthi;
317 unsigned short port; 320 unsigned short port;
318 321
319 if (uaddr_len > sizeof(buf)) 322 if (uaddr_len > RPCBIND_MAXUADDRLEN)
320 return 0; 323 return 0;
321 324
322 memcpy(buf, uaddr, uaddr_len); 325 memcpy(buf, uaddr, uaddr_len);
323 326
324 buf[uaddr_len] = '\n'; 327 buf[uaddr_len] = '\0';
325 buf[uaddr_len + 1] = '\0';
326
327 c = strrchr(buf, '.'); 328 c = strrchr(buf, '.');
328 if (unlikely(c == NULL)) 329 if (unlikely(c == NULL))
329 return 0; 330 return 0;
@@ -332,9 +333,7 @@ size_t rpc_uaddr2sockaddr(const char *uaddr, const size_t uaddr_len,
332 if (unlikely(portlo > 255)) 333 if (unlikely(portlo > 255))
333 return 0; 334 return 0;
334 335
335 c[0] = '\n'; 336 *c = '\0';
336 c[1] = '\0';
337
338 c = strrchr(buf, '.'); 337 c = strrchr(buf, '.');
339 if (unlikely(c == NULL)) 338 if (unlikely(c == NULL))
340 return 0; 339 return 0;
@@ -345,8 +344,7 @@ size_t rpc_uaddr2sockaddr(const char *uaddr, const size_t uaddr_len,
345 344
346 port = (unsigned short)((porthi << 8) | portlo); 345 port = (unsigned short)((porthi << 8) | portlo);
347 346
348 c[0] = '\0'; 347 *c = '\0';
349
350 if (rpc_pton(buf, strlen(buf), sap, salen) == 0) 348 if (rpc_pton(buf, strlen(buf), sap, salen) == 0)
351 return 0; 349 return 0;
352 350