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authorAndreas Schwab <schwab@suse.de>2012-12-04 16:14:13 +0100
committerAndreas Schwab <schwab@suse.de>2013-01-10 09:59:58 +0100
commitdd31ac7a8e0d4cc24eee6815f9101caa5aa64291 (patch)
tree084cc65c5b744f23cada0fae9bfd4c0c1cbb3ca3 /nscd/pwdcache.c
parent3167bfc62bb38e3057f7694566b5bb157236a5a8 (diff)
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Properly check for short writes when sending the response in nscd
	* nscd/grpcache.c (cache_addgr): Properly check for short write.
	* nscd/initgrcache.c (addinitgroupsX): Likewise.
	* nscd/pwdcache.c (cache_addpw): Likewise.
	* nscd/servicescache.c (cache_addserv): Likewise.  Don't write
	more than recsize.
Diffstat (limited to 'nscd/pwdcache.c')
-rw-r--r--nscd/pwdcache.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/nscd/pwdcache.c b/nscd/pwdcache.c
index ef492b58c1..bfc183150d 100644
--- a/nscd/pwdcache.c
+++ b/nscd/pwdcache.c
@@ -81,6 +81,7 @@ cache_addpw (struct database_dyn *db, int fd, request_header *req,
 	     const void *key, struct passwd *pwd, uid_t owner,
 	     struct hashentry *const he, struct datahead *dh, int errval)
 {
+  bool all_written = true;
   ssize_t total;
   ssize_t written;
   time_t t = time (NULL);
@@ -306,7 +307,7 @@ cache_addpw (struct database_dyn *db, int fd, request_header *req,
 			  + db->head->data_size));
 	      written = sendfileall (fd, db->wr_fd,
 				     (char *) &dataset->resp
-				     - (char *) db->head, dataset->head.recsize );
+				     - (char *) db->head, dataset->head.recsize);
 # ifndef __ASSUME_SENDFILE
 	      if (written == -1 && errno == ENOSYS)
 		goto use_write;
@@ -318,6 +319,9 @@ cache_addpw (struct database_dyn *db, int fd, request_header *req,
 # endif
 #endif
 	    written = writeall (fd, &dataset->resp, dataset->head.recsize);
+
+	  if (written != dataset->head.recsize)
+	    all_written = false;
 	}
 
 
@@ -377,7 +381,7 @@ cache_addpw (struct database_dyn *db, int fd, request_header *req,
 	}
     }
 
-  if (__builtin_expect (written != total, 0) && debug_level > 0)
+  if (__builtin_expect (!all_written, 0) && debug_level > 0)
     {
       char buf[256];
       dbg_log (_("short write in %s: %s"),  __FUNCTION__,