Update.

2002-10-09  Ulrich Drepper  <drepper@redhat.com>

	* Versions.def (libc): Add GLIBC_2.3.1.
	(libpthread): Add GLIBC_2.3.1.

	* include/signal.h: Add libc_hidden_proto for __sigwait, __sigwaitinfo,
	and __sigtimedwait.
	* signal/Versions: Add __sigtimedwait, __sigwait, and __sigwaitinfo.
	* sysdeps/unix/sysv/linux/sigtimedwait.c (__sigtimedwait): Add
	libc_hidden_def.
	* sysdeps/unix/sysv/linux/sigwait.c (__sigwait): Likewise.
	* sysdeps/unix/sysv/linux/sigwaitinfo.c (__sigwaitinfo): Likewise.

	* include/sys/msg.h: Declare __libc_msgrcv and __libc_msgsnd.
	* sysdeps/unix/sysv/linux/msgrcv.c (__msgrcv): Rename to __libc_msgrcv
	and make old name an alias.
	* sysdeps/unix/sysv/linux/msgsnd.c (__msgsnd): Rename to __libc_msgsnd
	and make old name an alias.
	* sysvipc/Versions (libc) [GLIBC_PRIVATE]: Add __libc_msgrcv and
	__libc_msgsnd.

	* include/sys/uio.h: Declare __libc_readv and __libc_writev.
	* misc/Versions (libc) [GLIBC_PRIVATE]: Add __libc_readv and
	__libc_writev.
	* sysdeps/generic/readv.c (__readv): Rename to __libc_readv and make
	old name an alias.
	* sysdeps/posix/readv.c: Likewise
	* sysdeps/unix/sysv/aix/readv.c: Likewise.
	* sysdeps/unix/sysv/linux/readv.c: Likewise.
	* sysdeps/generic/writev.c (__writev): Rename to __libc_writev and make
	old name an alias.
	* sysdeps/posix/writev.c: Likewise
	* sysdeps/unix/sysv/aix/writev.c: Likewise.
	* sysdeps/unix/sysv/linux/writev.c: Likewise.

	* include/sys/wait.h: Declare __waitid.
	* posix/Versions (libc) [GLIBC_PRIVATE]: Add __waitid.
	* sysdeps/generic/waitid.c (waitid): Rename to __waitid and make old
	name an alias.
	* sysdeps/posix/waitid.c: Likewise.
	* sysdeps/unix/sysv/aix/waitid.c: Likewise.

	* sysdeps/unix/sysv/linux/syscalls.list: Add creat syscall.

2002-10-07  Jakub Jelinek  <jakub@redhat.com>

	* include/alloca.h (__libc_use_alloca, __libc_alloca_cutoff): New
	prototypes.
	(__MAX_ALLOCA_CUTOFF): Define.
	Include allocalim.h.
	* resolv/nss_dns/dns-host.c (_nss_dns_gethostbyname2_r,
	_nss_dns_gethostbyaddr_r): Use alloca or malloc to allocate
	host_buffer depending on __libc_use_alloca.
	* resolv/nss_dns/dns-network.c (_nss_dns_getnetbyname_r,
	_nss_dns_getnetbyaddr_r): Use alloca or malloc to allocate
	net_buffer depending on __libc_use_alloca.
	* resolv/res_query.c (res_nquery): Use alloca or malloc to allocate
	buf depending on __libc_use_alloca.
	* resolv/gethnamaddr.c (gethostbyname2, gethostbyaddr): Likewise.
	* stdio-common/vfprintf.c (vfprintf): Use __libc_use_alloca
	instead of hardcoded constants.
	Pass proper size argument to alloca and compute end for wide char
	version.
	* stdio-common/printf_fp.c (__printf_fp): Use __libc_use_alloca
	instead of hardcoded constants.
	* string/strcoll.c (strcoll): Likewise.
	* string/strxfrm.c (strxfrm): Likewise.
	* sysdeps/posix/readv.c (__readv): Likewise.
	* sysdeps/posix/writev.c (__writev): Likewise.
	* sysdeps/generic/allocalim.h: New file.

2 files changed, 101 insertions, 26 deletions

diff --git a/resolv/nss_dns/dns-host.c b/resolv/nss_dns/dns-host.c
index c7bfc13aab..39eccabbdf 100644
--- a/resolv/nss_dns/dns-host.c
+++ b/resolv/nss_dns/dns-host.c
@@ -132,12 +132,13 @@ _nss_dns_gethostbyname2_r (const char *name, int af, struct hostent *result,
 			   char *buffer, size_t buflen, int *errnop,
 			   int *h_errnop)
 {
-  querybuf host_buffer;
+  querybuf *host_buffer;
   char tmp[NS_MAXDNAME];
   int size, type, n;
   const char *cp;
-  int map = 0;
+  int map = 0, use_malloc = 0;
   int olderr = errno;
+  enum nss_status status;
 
   if ((_res.options & RES_INIT) == 0 && __res_ninit (&_res) == -1)
     return NSS_STATUS_UNAVAIL;
@@ -169,8 +170,21 @@ _nss_dns_gethostbyname2_r (const char *name, int af, struct hostent *result,
       && (cp = res_hostalias (&_res, name, tmp, sizeof (tmp))) != NULL)
     name = cp;
 
-  n = res_nsearch (&_res, name, C_IN, type, host_buffer.buf,
-		   sizeof (host_buffer.buf));
+  if (!__libc_use_alloca (MAXPACKET))
+    {
+      host_buffer = (querybuf *) malloc (sizeof (querybuf));
+      if (host_buffer == NULL)
+	{
+	  *errnop = ENOMEM;
+	  return NSS_STATUS_UNAVAIL;
+	}
+      use_malloc = 1;
+    }
+  else
+    host_buffer = (querybuf *) alloca (sizeof (querybuf));
+
+  n = res_nsearch (&_res, name, C_IN, type, host_buffer->buf,
+		   sizeof (host_buffer->buf));
   if (n < 0)
     {
       enum nss_status status = (errno == ECONNREFUSED
@@ -185,11 +199,15 @@ _nss_dns_gethostbyname2_r (const char *name, int af, struct hostent *result,
 	 by having the RES_USE_INET6 bit in _res.options set, we try
 	 another lookup.  */
       if (af == AF_INET6 && (_res.options & RES_USE_INET6))
-	n = res_nsearch (&_res, name, C_IN, T_A, host_buffer.buf,
-			 sizeof (host_buffer.buf));
+	n = res_nsearch (&_res, name, C_IN, T_A, host_buffer->buf,
+			 sizeof (host_buffer->buf));
 
       if (n < 0)
-	return status;
+	{
+	  if (use_malloc)
+	    free (host_buffer);
+	  return status;
+	}
 
       map = 1;
 
@@ -197,8 +215,11 @@ _nss_dns_gethostbyname2_r (const char *name, int af, struct hostent *result,
       result->h_length = INADDRSZ;;
     }
 
-  return getanswer_r (&host_buffer, n, name, type, result, buffer, buflen,
-		      errnop, h_errnop, map);
+  status = getanswer_r (host_buffer, n, name, type, result, buffer, buflen,
+			errnop, h_errnop, map);
+  if (use_malloc)
+    free (host_buffer);
+  return status;
 }
 
 
@@ -236,10 +257,10 @@ _nss_dns_gethostbyaddr_r (const void *addr, socklen_t len, int af,
     char *h_addr_ptrs[MAX_NR_ADDRS + 1];
     char linebuffer[0];
   } *host_data = (struct host_data *) buffer;
-  querybuf host_buffer;
+  querybuf *host_buffer;
   char qbuf[MAXDNAME+1], *qp = NULL;
   size_t size;
-  int n, status;
+  int n, status, use_malloc = 0;
   int olderr = errno;
 
   if ((_res.options & RES_INIT) == 0 && __res_ninit (&_res) == -1)
@@ -294,23 +315,40 @@ _nss_dns_gethostbyaddr_r (const void *addr, socklen_t len, int af,
       break;
     }
 
-  n = res_nquery (&_res, qbuf, C_IN, T_PTR, (u_char *)host_buffer.buf,
-		  sizeof host_buffer);
+  if (!__libc_use_alloca (MAXPACKET))
+    {
+      host_buffer = (querybuf *) malloc (sizeof (querybuf));
+      if (host_buffer == NULL)
+	{
+	  *errnop = ENOMEM;
+	  return NSS_STATUS_UNAVAIL;
+	}
+      use_malloc = 1;
+    }
+  else
+    host_buffer = (querybuf *) alloca (sizeof (querybuf));
+
+  n = res_nquery (&_res, qbuf, C_IN, T_PTR, host_buffer->buf,
+		  sizeof (host_buffer->buf));
   if (n < 0 && af == AF_INET6)
     {
       strcpy (qp, "ip6.int");
-      n = res_nquery (&_res, qbuf, C_IN, T_PTR, (u_char *)host_buffer.buf,
-		      sizeof host_buffer);
+      n = res_nquery (&_res, qbuf, C_IN, T_PTR, host_buffer->buf,
+		      sizeof (host_buffer->buf));
     }
   if (n < 0)
     {
       *h_errnop = h_errno;
       __set_errno (olderr);
+      if (use_malloc)
+	free (host_buffer);
       return errno == ECONNREFUSED ? NSS_STATUS_UNAVAIL : NSS_STATUS_NOTFOUND;
     }
 
-  status = getanswer_r (&host_buffer, n, qbuf, T_PTR, result, buffer, buflen,
+  status = getanswer_r (host_buffer, n, qbuf, T_PTR, result, buffer, buflen,
 			errnop, h_errnop, 0 /* XXX */);
+  if (use_malloc)
+    free (host_buffer);
   if (status != NSS_STATUS_SUCCESS)
     {
       *h_errnop = h_errno;
diff --git a/resolv/nss_dns/dns-network.c b/resolv/nss_dns/dns-network.c
index 774c868d2f..9a366aca65 100644
--- a/resolv/nss_dns/dns-network.c
+++ b/resolv/nss_dns/dns-network.c
@@ -110,27 +110,47 @@ _nss_dns_getnetbyname_r (const char *name, struct netent *result,
 			 int *herrnop)
 {
   /* Return entry for network with NAME.  */
-  querybuf net_buffer;
-  int anslen;
+  querybuf *net_buffer;
+  int anslen, use_malloc = 0;
   char *qbuf;
+  enum nss_status status;
 
   if ((_res.options & RES_INIT) == 0 && __res_ninit (&_res) == -1)
     return NSS_STATUS_UNAVAIL;
 
   qbuf = strdupa (name);
-  anslen = res_nsearch (&_res, qbuf, C_IN, T_PTR, (u_char *) &net_buffer,
-			sizeof (querybuf));
+
+  if (!__libc_use_alloca (MAXPACKET))
+    {
+      net_buffer = (querybuf *) malloc (sizeof (querybuf));
+      if (net_buffer == NULL)
+	{
+	  *errnop = ENOMEM;
+	  return NSS_STATUS_UNAVAIL;
+	}
+      use_malloc = 1;
+    }
+  else
+    net_buffer = (querybuf *) alloca (sizeof (querybuf));
+
+  anslen = res_nsearch (&_res, qbuf, C_IN, T_PTR, net_buffer->buf,
+			sizeof (net_buffer->buf));
   if (anslen < 0)
     {
       /* Nothing found.  */
       *errnop = errno;
+      if (use_malloc)
+	free (net_buffer);
       return (errno == ECONNREFUSED
 	      || errno == EPFNOSUPPORT
 	      || errno == EAFNOSUPPORT)
 	? NSS_STATUS_UNAVAIL : NSS_STATUS_NOTFOUND;
     }
 
-  return getanswer_r (&net_buffer, anslen, result, buffer, buflen, BYNAME);
+  status = getanswer_r (net_buffer, anslen, result, buffer, buflen, BYNAME);
+  if (use_malloc)
+    free (net_buffer);
+  return status;
 }
 
 
@@ -141,10 +161,10 @@ _nss_dns_getnetbyaddr_r (uint32_t net, int type, struct netent *result,
 {
   /* Return entry for network with NAME.  */
   enum nss_status status;
-  querybuf net_buffer;
+  querybuf *net_buffer;
   unsigned int net_bytes[4];
   char qbuf[MAXDNAME];
-  int cnt, anslen;
+  int cnt, anslen, use_malloc = 0;
   u_int32_t net2;
   int olderr = errno;
 
@@ -181,20 +201,37 @@ _nss_dns_getnetbyaddr_r (uint32_t net, int type, struct netent *result,
       break;
     }
 
-  anslen = res_nquery (&_res, qbuf, C_IN, T_PTR, (u_char *) &net_buffer,
-		       sizeof (querybuf));
+  if (!__libc_use_alloca (MAXPACKET))
+    {
+      net_buffer = (querybuf *) malloc (sizeof (querybuf));
+      if (net_buffer == NULL)
+	{
+	  *errnop = ENOMEM;
+	  return NSS_STATUS_UNAVAIL;
+	}
+      use_malloc = 1;
+    }
+  else
+    net_buffer = (querybuf *) alloca (sizeof (querybuf));
+
+  anslen = res_nquery (&_res, qbuf, C_IN, T_PTR, net_buffer->buf,
+		       sizeof (net_buffer->buf));
   if (anslen < 0)
     {
       /* Nothing found.  */
       int err = errno;
       __set_errno (olderr);
+      if (use_malloc)
+	free (net_buffer);
       return (err == ECONNREFUSED
 	      || err == EPFNOSUPPORT
 	      || err == EAFNOSUPPORT)
 	? NSS_STATUS_UNAVAIL : NSS_STATUS_NOTFOUND;
     }
 
-  status = getanswer_r (&net_buffer, anslen, result, buffer, buflen, BYADDR);
+  status = getanswer_r (net_buffer, anslen, result, buffer, buflen, BYADDR);
+  if (use_malloc)
+    free (net_buffer);
   if (status == NSS_STATUS_SUCCESS)
     {
       /* Strip trailing zeros.  */