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https://sourceware.org/git/glibc.git
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Update.
* nscd/nscd_getpw_r.c (nscd_getpw_r): Consolidate writing of the request with one writev call. Protect all read calls with TEMP_FAILURE_RETRY. * nscd/nscd_getgr_r.c (nscd_getgr_r): Likewise. * nscd/nscd_gethst_r.c (nscd_gethst_r): Likewise. * nscd/hstcache.c: Use extend_alloca to reallocate alloca'd buffer. Protect writev calls with TEMP_FAILURE_RETRY. * nscd/grpcache.c: Likewise. * nscd/pwdcache.c: Likewise.
This commit is contained in:
Ulrich Drepper
parent
c9f24336e0
commit
9caf4f1c67
11
ChangeLog
11
ChangeLog
@ -1,5 +1,16 @@
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2003-01-15 Ulrich Drepper <drepper@redhat.com>
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* nscd/nscd_getpw_r.c (nscd_getpw_r): Consolidate writing of the
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request with one writev call. Protect all read calls with
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TEMP_FAILURE_RETRY.
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* nscd/nscd_getgr_r.c (nscd_getgr_r): Likewise.
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* nscd/nscd_gethst_r.c (nscd_gethst_r): Likewise.
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* nscd/hstcache.c: Use extend_alloca to reallocate alloca'd buffer.
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Protect writev calls with TEMP_FAILURE_RETRY.
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* nscd/grpcache.c: Likewise.
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* nscd/pwdcache.c: Likewise.
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* nscd/hstcache.c (addhstbynamev6): Don't interpret hostname as
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IPv6 address in debug output.
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@ -1,5 +1,5 @@
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/* Cache handling for group lookup.
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Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
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Copyright (C) 1998-2002, 2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
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@ -18,6 +18,7 @@
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <alloca.h>
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#include <errno.h>
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#include <error.h>
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#include <grp.h>
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@ -95,7 +96,7 @@ cache_addgr (struct database *db, int fd, request_header *req, void *key,
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total = sizeof (notfound);
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written = writev (fd, &iov_notfound, 1);
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written = TEMP_FAILURE_RETRY (writev (fd, &iov_notfound, 1));
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copy = malloc (req->key_len);
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if (copy == NULL)
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@ -227,10 +228,11 @@ addgrbyname (struct database *db, int fd, request_header *req,
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{
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char *old_buffer = buffer;
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errno = 0;
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buflen += 1024;
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#define INCR 1024
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if (__builtin_expect (buflen > 32768, 0))
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{
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buflen += INCR;
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buffer = (char *) realloc (use_malloc ? buffer : NULL, buflen);
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if (buffer == NULL)
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{
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@ -244,19 +246,9 @@ addgrbyname (struct database *db, int fd, request_header *req,
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use_malloc = true;
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}
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else
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{
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buffer = (char *) alloca (buflen);
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#if _STACK_GROWS_DOWN
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if (buffer + buflen == old_buffer)
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buflen = 2 * buflen - 1024;
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#elif _STACK_GROWS_UP
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if (old_buffer + buflen - 1024 == buffer)
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{
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buffer = old_buffer;
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buflen = 2 * buflen - 1024;
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}
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#endif
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}
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/* Allocate a new buffer on the stack. If possible combine it
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with the previously allocated buffer. */
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buffer = (char *) extend_alloca (buffer, buflen, buflen + INCR);
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}
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if (secure[grpdb])
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@ -309,10 +301,10 @@ addgrbygid (struct database *db, int fd, request_header *req,
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{
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char *old_buffer = buffer;
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errno = 0;
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buflen += 1024;
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if (__builtin_expect (buflen > 32768, 0))
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{
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buflen += INCR;
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buffer = (char *) realloc (use_malloc ? buffer : NULL, buflen);
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if (buffer == NULL)
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{
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@ -326,19 +318,9 @@ addgrbygid (struct database *db, int fd, request_header *req,
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use_malloc = true;
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}
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else
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{
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buffer = (char *) alloca (buflen);
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#if _STACK_GROWS_DOWN
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if (buffer + buflen == old_buffer)
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buflen = 2 * buflen - 1024;
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#elif _STACK_GROWS_UP
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if (old_buffer + buflen - 1024 == buffer)
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{
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buffer = old_buffer;
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buflen = 2 * buflen - 1024;
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}
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#endif
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}
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/* Allocate a new buffer on the stack. If possible combine it
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with the previously allocated buffer. */
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buffer = (char *) extend_alloca (buffer, buflen, buflen + INCR);
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}
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if (secure[grpdb])
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@ -18,6 +18,7 @@
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <alloca.h>
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#include <assert.h>
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#include <errno.h>
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#include <error.h>
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@ -103,7 +104,7 @@ cache_addhst (struct database *db, int fd, request_header *req, void *key,
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total = sizeof (notfound);
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written = writev (fd, &iov_notfound, 1);
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written = TEMP_FAILURE_RETRY (writev (fd, &iov_notfound, 1));
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copy = malloc (req->key_len);
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if (copy == NULL)
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@ -315,10 +316,11 @@ addhstbyname (struct database *db, int fd, request_header *req,
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{
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char *old_buffer = buffer;
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errno = 0;
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buflen += 1024;
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#define INCR 1024
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if (__builtin_expect (buflen > 32768, 0))
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{
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buflen += INCR;
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buffer = (char *) realloc (use_malloc ? buffer : NULL, buflen);
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if (buffer == NULL)
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{
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@ -332,19 +334,9 @@ addhstbyname (struct database *db, int fd, request_header *req,
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use_malloc = true;
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}
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else
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{
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buffer = (char *) alloca (buflen);
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#if _STACK_GROWS_DOWN
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if (buffer + buflen == old_buffer)
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buflen = 2 * buflen - 1024;
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#elif _STACK_GROWS_UP
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if (old_buffer + buflen - 1024 == buffer)
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{
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buffer = old_buffer;
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buflen = 2 * buflen - 1024;
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}
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#endif
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}
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/* Allocate a new buffer on the stack. If possible combine it
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with the previously allocated buffer. */
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buffer = (char *) extend_alloca (buffer, buflen, buflen + INCR);
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}
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if (secure[hstdb])
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@ -392,10 +384,10 @@ addhstbyaddr (struct database *db, int fd, request_header *req,
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{
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char *old_buffer = buffer;
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errno = 0;
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buflen += 1024;
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if (__builtin_expect (buflen > 32768, 0))
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{
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buflen += INCR;
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buffer = (char *) realloc (use_malloc ? buffer : NULL, buflen);
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if (buffer == NULL)
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{
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@ -409,19 +401,9 @@ addhstbyaddr (struct database *db, int fd, request_header *req,
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use_malloc = true;
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}
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else
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{
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buffer = (char *) alloca (buflen);
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#if _STACK_GROWS_DOWN
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if (buffer + buflen == old_buffer)
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buflen = 2 * buflen - 1024;
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#elif _STACK_GROWS_UP
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if (old_buffer + buflen - 1024 == buffer)
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{
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buffer = old_buffer;
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buflen = 2 * buflen - 1024;
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}
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#endif
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}
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/* Allocate a new buffer on the stack. If possible combine it
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with the previously allocated buffer. */
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buffer = (char *) extend_alloca (buffer, buflen, buflen + INCR);
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}
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if (secure[hstdb])
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@ -450,7 +432,7 @@ addhstbynamev6 (struct database *db, int fd, request_header *req,
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bool use_malloc = false;
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if (__builtin_expect (debug_level > 0, 0))
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dbg_log (_("Haven't found \"%s\" in hosts cache!"), key);
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dbg_log (_("Haven't found \"%s\" in hosts cache!"), (char *) key);
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if (secure[hstdb])
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{
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@ -465,10 +447,10 @@ addhstbynamev6 (struct database *db, int fd, request_header *req,
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{
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char *old_buffer = buffer;
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errno = 0;
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buflen += 1024;
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if (__builtin_expect (buflen > 32768, 0))
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{
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buflen += INCR;
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buffer = (char *) realloc (use_malloc ? buffer : NULL, buflen);
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if (buffer == NULL)
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{
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@ -482,19 +464,9 @@ addhstbynamev6 (struct database *db, int fd, request_header *req,
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use_malloc = true;
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}
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else
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{
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buffer = (char *) alloca (buflen);
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#if _STACK_GROWS_DOWN
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if (buffer + buflen == old_buffer)
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buflen = 2 * buflen - 1024;
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#elif _STACK_GROWS_UP
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if (old_buffer + buflen - 1024 == buffer)
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{
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buffer = old_buffer;
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buflen = 2 * buflen - 1024;
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}
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#endif
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}
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/* Allocate a new buffer on the stack. If possible combine it
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with the previously allocated buffer. */
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buffer = (char *) extend_alloca (buffer, buflen, buflen + INCR);
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}
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if (secure[hstdb])
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@ -542,10 +514,10 @@ addhstbyaddrv6 (struct database *db, int fd, request_header *req,
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{
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char *old_buffer = buffer;
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errno = 0;
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buflen += 1024;
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if (__builtin_expect (buflen > 32768, 0))
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{
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buflen += INCR;
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buffer = (char *) realloc (use_malloc ? buffer : NULL, buflen);
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if (buffer == NULL)
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{
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@ -559,19 +531,9 @@ addhstbyaddrv6 (struct database *db, int fd, request_header *req,
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use_malloc = true;
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}
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else
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{
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buffer = (char *) alloca (buflen);
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#if _STACK_GROWS_DOWN
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if (buffer + buflen == old_buffer)
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buflen = 2 * buflen - 1024;
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#elif _STACK_GROWS_UP
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if (old_buffer + buflen - 1024 == buffer)
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{
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buffer = old_buffer;
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buflen = 2 * buflen - 1024;
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}
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#endif
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}
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/* Allocate a new buffer on the stack. If possible combine it
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with the previously allocated buffer. */
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buffer = (char *) extend_alloca (buffer, buflen, buflen + INCR);
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}
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if (secure[hstdb])
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@ -1,4 +1,4 @@
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/* Copyright (C) 1998, 1999, 2000, 2002 Free Software Foundation, Inc.
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/* Copyright (C) 1998, 1999, 2000, 2002, 2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Thorsten Kukuk <kukuk@uni-paderborn.de>, 1998.
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@ -114,13 +114,15 @@ nscd_getgr_r (const char *key, size_t keylen, request_type type,
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vec[1].iov_base = (void *) key;
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vec[1].iov_len = keylen;
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if ((size_t) __writev (sock, vec, 2) != sizeof (request_header) + keylen)
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nbytes = (size_t) TEMP_FAILURE_RETRY (__writev (sock, vec, 2));
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if (nbytes != sizeof (request_header) + keylen)
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{
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__close (sock);
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return -1;
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}
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nbytes = __read (sock, &gr_resp, sizeof (gr_response_header));
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nbytes = TEMP_FAILURE_RETRY (__read (sock, &gr_resp,
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sizeof (gr_response_header)));
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if (nbytes != sizeof (gr_response_header))
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{
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__close (sock);
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@ -182,7 +184,7 @@ nscd_getgr_r (const char *key, size_t keylen, request_type type,
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total_len += gr_resp.gr_name_len + gr_resp.gr_passwd_len;
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/* Get this data. */
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if ((size_t) __readv (sock, vec, 2) != total_len)
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if ((size_t) TEMP_FAILURE_RETRY (__readv (sock, vec, 2)) != total_len)
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{
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__close (sock);
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return -1;
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@ -203,7 +205,8 @@ nscd_getgr_r (const char *key, size_t keylen, request_type type,
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if (total_len > buflen)
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goto no_room;
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if (__read (sock, resultbuf->gr_mem[0], total_len) != total_len)
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if ((size_t) TEMP_FAILURE_RETRY (__read (sock, resultbuf->gr_mem[0],
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total_len)) != total_len)
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{
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__close (sock);
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/* The `errno' to some value != ERANGE. */
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|
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@ -1,4 +1,4 @@
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/* Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
|
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/* Copyright (C) 1998-2002, 2003 Free Software Foundation, Inc.
|
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This file is part of the GNU C Library.
|
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
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@ -123,6 +123,7 @@ nscd_gethst_r (const char *key, size_t keylen, request_type type,
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hst_response_header hst_resp;
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request_header req;
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ssize_t nbytes;
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struct iovec vec[4];
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|
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if (sock == -1)
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{
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@ -133,21 +134,21 @@ nscd_gethst_r (const char *key, size_t keylen, request_type type,
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req.version = NSCD_VERSION;
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req.type = type;
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req.key_len = keylen;
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nbytes = __write (sock, &req, sizeof (request_header));
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if (nbytes != sizeof (request_header))
|
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|
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vec[0].iov_base = &req;
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vec[0].iov_len = sizeof (request_header);
|
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vec[1].iov_base = (void *) key;
|
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vec[1].iov_len = req.key_len;
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|
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nbytes = TEMP_FAILURE_RETRY (__writev (sock, vec, 2));
|
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if ((size_t) nbytes != sizeof (request_header) + req.key_len)
|
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{
|
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__close (sock);
|
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return -1;
|
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}
|
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|
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nbytes = __write (sock, key, req.key_len);
|
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if (nbytes != req.key_len)
|
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{
|
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__close (sock);
|
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return -1;
|
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}
|
||||
|
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nbytes = __read (sock, &hst_resp, sizeof (hst_response_header));
|
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nbytes = TEMP_FAILURE_RETRY (__read (sock, &hst_resp,
|
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sizeof (hst_response_header)));
|
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if (nbytes != sizeof (hst_response_header))
|
||||
{
|
||||
__close (sock);
|
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@ -164,7 +165,6 @@ nscd_gethst_r (const char *key, size_t keylen, request_type type,
|
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|
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if (hst_resp.found == 1)
|
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{
|
||||
struct iovec vec[4];
|
||||
uint32_t *aliases_len;
|
||||
char *cp = buffer;
|
||||
uintptr_t align1;
|
||||
@ -263,7 +263,7 @@ nscd_gethst_r (const char *key, size_t keylen, request_type type,
|
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}
|
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resultbuf->h_addr_list[cnt] = NULL;
|
||||
|
||||
if ((size_t) __readv (sock, vec, n) != total_len)
|
||||
if ((size_t) TEMP_FAILURE_RETRY (__readv (sock, vec, n)) != total_len)
|
||||
{
|
||||
__close (sock);
|
||||
return -1;
|
||||
@ -284,8 +284,8 @@ nscd_gethst_r (const char *key, size_t keylen, request_type type,
|
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goto no_room;
|
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|
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/* And finally read the aliases. */
|
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if ((size_t) __read (sock, resultbuf->h_aliases[0], total_len)
|
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!= total_len)
|
||||
if ((size_t) TEMP_FAILURE_RETRY (__read (sock, resultbuf->h_aliases[0],
|
||||
total_len)) != total_len)
|
||||
{
|
||||
__close (sock);
|
||||
return -1;
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
/* Copyright (C) 1998, 1999 Free Software Foundation, Inc.
|
||||
/* Copyright (C) 1998, 1999, 2003 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Thorsten Kukuk <kukuk@uni-paderborn.de>, 1998.
|
||||
|
||||
@ -96,6 +96,7 @@ nscd_getpw_r (const char *key, size_t keylen, request_type type,
|
||||
request_header req;
|
||||
pw_response_header pw_resp;
|
||||
ssize_t nbytes;
|
||||
struct iovec vec[2];
|
||||
|
||||
if (sock == -1)
|
||||
{
|
||||
@ -106,21 +107,21 @@ nscd_getpw_r (const char *key, size_t keylen, request_type type,
|
||||
req.version = NSCD_VERSION;
|
||||
req.type = type;
|
||||
req.key_len = keylen;
|
||||
nbytes = __write (sock, &req, sizeof (request_header));
|
||||
if (nbytes != sizeof (request_header))
|
||||
|
||||
vec[0].iov_base = &req;
|
||||
vec[0].iov_len = sizeof (request_header);
|
||||
vec[1].iov_base = (void *) key;
|
||||
vec[1].iov_len = keylen;
|
||||
|
||||
nbytes = (size_t) TEMP_FAILURE_RETRY (__writev (sock, vec, 2));
|
||||
if (nbytes != sizeof (request_header) + keylen)
|
||||
{
|
||||
__close (sock);
|
||||
return -1;
|
||||
}
|
||||
|
||||
nbytes = __write (sock, key, keylen);
|
||||
if (nbytes != keylen)
|
||||
{
|
||||
__close (sock);
|
||||
return -1;
|
||||
}
|
||||
|
||||
nbytes = __read (sock, &pw_resp, sizeof (pw_response_header));
|
||||
nbytes = TEMP_FAILURE_RETRY (__read (sock, &pw_resp,
|
||||
sizeof (pw_response_header)));
|
||||
if (nbytes != sizeof (pw_response_header))
|
||||
{
|
||||
__close (sock);
|
||||
@ -168,7 +169,7 @@ nscd_getpw_r (const char *key, size_t keylen, request_type type,
|
||||
/* get pw_pshell */
|
||||
resultbuf->pw_shell = p;
|
||||
|
||||
nbytes = __read (sock, buffer, total);
|
||||
nbytes = TEMP_FAILURE_RETRY (__read (sock, buffer, total));
|
||||
|
||||
__close (sock);
|
||||
|
||||
|
||||
@ -1,5 +1,5 @@
|
||||
/* Cache handling for passwd lookup.
|
||||
Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
|
||||
Copyright (C) 1998-2002, 2003 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
|
||||
|
||||
@ -18,6 +18,7 @@
|
||||
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
||||
02111-1307 USA. */
|
||||
|
||||
#include <alloca.h>
|
||||
#include <errno.h>
|
||||
#include <error.h>
|
||||
#include <pwd.h>
|
||||
@ -101,7 +102,7 @@ cache_addpw (struct database *db, int fd, request_header *req, void *key,
|
||||
|
||||
total = sizeof (notfound);
|
||||
|
||||
written = writev (fd, &iov_notfound, 1);
|
||||
written = TEMP_FAILURE_RETRY (writev (fd, &iov_notfound, 1));
|
||||
|
||||
copy = malloc (req->key_len);
|
||||
if (copy == NULL)
|
||||
@ -223,10 +224,11 @@ addpwbyname (struct database *db, int fd, request_header *req,
|
||||
{
|
||||
char *old_buffer = buffer;
|
||||
errno = 0;
|
||||
buflen += 1024;
|
||||
#define INCR 1024
|
||||
|
||||
if (__builtin_expect (buflen > 32768, 0))
|
||||
{
|
||||
buflen += INCR;
|
||||
buffer = (char *) realloc (use_malloc ? buffer : NULL, buflen);
|
||||
if (buffer == NULL)
|
||||
{
|
||||
@ -240,19 +242,9 @@ addpwbyname (struct database *db, int fd, request_header *req,
|
||||
use_malloc = true;
|
||||
}
|
||||
else
|
||||
{
|
||||
buffer = (char *) alloca (buflen);
|
||||
#if _STACK_GROWS_DOWN
|
||||
if (buffer + buflen == old_buffer)
|
||||
buflen = 2 * buflen - 1024;
|
||||
#elif _STACK_GROWS_UP
|
||||
if (old_buffer + buflen - 1024 == buffer)
|
||||
{
|
||||
buffer = old_buffer;
|
||||
buflen = 2 * buflen - 1024;
|
||||
}
|
||||
#endif
|
||||
}
|
||||
/* Allocate a new buffer on the stack. If possible combine it
|
||||
with the previously allocated buffer. */
|
||||
buffer = (char *) extend_alloca (buffer, buflen, buflen + INCR);
|
||||
}
|
||||
|
||||
if (secure[pwddb])
|
||||
@ -305,10 +297,10 @@ addpwbyuid (struct database *db, int fd, request_header *req,
|
||||
{
|
||||
char *old_buffer = buffer;
|
||||
errno = 0;
|
||||
buflen += 1024;
|
||||
|
||||
if (__builtin_expect (buflen > 32768, 0))
|
||||
{
|
||||
buflen += 1024;
|
||||
buffer = (char *) realloc (use_malloc ? buffer : NULL, buflen);
|
||||
if (buffer == NULL)
|
||||
{
|
||||
@ -322,19 +314,9 @@ addpwbyuid (struct database *db, int fd, request_header *req,
|
||||
use_malloc = true;
|
||||
}
|
||||
else
|
||||
{
|
||||
buffer = (char *) alloca (buflen);
|
||||
#if _STACK_GROWS_DOWN
|
||||
if (buffer + buflen == old_buffer)
|
||||
buflen = 2 * buflen - 1024;
|
||||
#elif _STACK_GROWS_UP
|
||||
if (old_buffer + buflen - 1024 == buffer)
|
||||
{
|
||||
buffer = old_buffer;
|
||||
buflen = 2 * buflen - 1024;
|
||||
}
|
||||
#endif
|
||||
}
|
||||
/* Allocate a new buffer on the stack. If possible combine it
|
||||
with the previously allocated buffer. */
|
||||
buffer = (char *) extend_alloca (buffer, buflen, buflen + INCR);
|
||||
}
|
||||
|
||||
if (secure[pwddb])
|
||||
|
||||
Loading…
Reference in New Issue
Block a user