[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[commits] r13934 - in /fsf/trunk/libc: ChangeLog NEWS elf/dl-runtime.c nis/nss_nis/nis-alias.c nscd/nscd_getserv_r.c posix/glob.c



Author: eglibc
Date: Mon May 23 00:03:17 2011
New Revision: 13934

Log:
Import glibc-mainline for 2011-05-23

Modified:
    fsf/trunk/libc/ChangeLog
    fsf/trunk/libc/NEWS
    fsf/trunk/libc/elf/dl-runtime.c
    fsf/trunk/libc/nis/nss_nis/nis-alias.c
    fsf/trunk/libc/nscd/nscd_getserv_r.c
    fsf/trunk/libc/posix/glob.c

Modified: fsf/trunk/libc/ChangeLog
==============================================================================
--- fsf/trunk/libc/ChangeLog (original)
+++ fsf/trunk/libc/ChangeLog Mon May 23 00:03:17 2011
@@ -1,3 +1,17 @@
+2011-05-22  Ulrich Drepper  <drepper@xxxxxxxxx>
+
+	[BZ #12671]
+	* nis/nss_nis/nis-alias.c (_nss_nis_getaliasbyname_r): Use malloc in
+	some situations.
+	* nscd/nscd_getserv_r.c (nscd_getserv_r): Likewise.
+	* posix/glob.c (glob_in_dir): Take additional parameter alloca_used.
+	add in in __libc_use_alloca calls.  Adjust callers.
+	(glob): Use malloc in some situations.
+
+	* elf/dl-runtime.c (_dl_profile_fixup): Also store LA_SYMB_NOPLTENTER
+	and LA_SYMB_NOPLTEXIT in flags which are passed to pltenter and
+	pltexit.
+
 2011-05-21  Ulrich Drepper  <drepper@xxxxxxxxx>
 
 	* sysdeps/unix/sysv/linux/bits/time.h: Define CLOCK_REALTIME_ALARM

Modified: fsf/trunk/libc/NEWS
==============================================================================
--- fsf/trunk/libc/NEWS (original)
+++ fsf/trunk/libc/NEWS Mon May 23 00:03:17 2011
@@ -1,4 +1,4 @@
-GNU C Library NEWS -- history of user-visible changes.  2011-5-21
+GNU C Library NEWS -- history of user-visible changes.  2011-5-22
 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
 See the end for copying conditions.
 
@@ -15,9 +15,9 @@
   12158, 12178, 12200, 12346, 12393, 12420, 12432, 12445, 12449, 12453,
   12454, 12460, 12469, 12489, 12509, 12510, 12511, 12518, 12527, 12541,
   12545, 12551, 12582, 12583, 12587, 12597, 12601, 12611, 12625, 12626,
-  12631, 12650, 12653, 12655, 12660, 12681, 12685, 12711, 12713, 12714,
-  12717, 12723, 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782,
-  12788, 12792
+  12631, 12650, 12653, 12655, 12660, 12671, 12681, 12685, 12711, 12713,
+  12714, 12717, 12723, 12724, 12734, 12738, 12746, 12766, 12775, 12777,
+  12782, 12788, 12792
 
 * The RPC implementation in libc is obsoleted.  Old programs keep working
   but new programs cannot be linked with the routines in libc anymore.

Modified: fsf/trunk/libc/elf/dl-runtime.c
==============================================================================
--- fsf/trunk/libc/elf/dl-runtime.c (original)
+++ fsf/trunk/libc/elf/dl-runtime.c Mon May 23 00:03:17 2011
@@ -271,7 +271,7 @@
 	     interested in auditing.  */
 	  if ((l->l_audit_any_plt | result->l_audit_any_plt) != 0)
 	    {
-	      unsigned int altvalue = 0;
+	      unsigned int flags = 0;
 	      struct audit_ifaces *afct = GLRO(dl_audit);
 	      /* Synthesize a symbol record where the st_value field is
 		 the result.  */
@@ -294,7 +294,6 @@
 		  if ((l->l_audit[cnt].bindflags & LA_FLG_BINDFROM) != 0
 		      && (result->l_audit[cnt].bindflags & LA_FLG_BINDTO) != 0)
 		    {
-		      unsigned int flags = altvalue;
 		      if (afct->symbind != NULL)
 			{
 			  uintptr_t new_value
@@ -305,7 +304,7 @@
 					     strtab2 + defsym->st_name);
 			  if (new_value != (uintptr_t) sym.st_value)
 			    {
-			      altvalue = LA_SYMB_ALTVALUE;
+			      flags |= LA_SYMB_ALTVALUE;
 			      sym.st_value = new_value;
 			    }
 			}
@@ -328,7 +327,7 @@
 		  afct = afct->next;
 		}
 
-	      reloc_result->flags = altvalue;
+	      reloc_result->flags = flags;
 	      value = DL_FIXUP_ADDR_VALUE (sym.st_value);
 	    }
 	  else
@@ -366,7 +365,7 @@
       const char *symname = strtab + sym.st_name;
 
       /* Keep track of overwritten addresses.  */
-      unsigned int altvalue = reloc_result->flags;
+      unsigned int flags = reloc_result->flags;
 
       struct audit_ifaces *afct = GLRO(dl_audit);
       for (unsigned int cnt = 0; cnt < GLRO(dl_naudit); ++cnt)
@@ -375,7 +374,6 @@
 	      && (reloc_result->enterexit
 		  & (LA_SYMB_NOPLTENTER << (2 * (cnt + 1)))) == 0)
 	    {
-	      unsigned int flags = altvalue;
 	      long int new_framesize = -1;
 	      uintptr_t new_value
 		= afct->ARCH_LA_PLTENTER (&sym, reloc_result->boundndx,
@@ -385,7 +383,7 @@
 					  &new_framesize);
 	      if (new_value != (uintptr_t) sym.st_value)
 		{
-		  altvalue = LA_SYMB_ALTVALUE;
+		  flags |= LA_SYMB_ALTVALUE;
 		  sym.st_value = new_value;
 		}
 

Modified: fsf/trunk/libc/nis/nss_nis/nis-alias.c
==============================================================================
--- fsf/trunk/libc/nis/nss_nis/nis-alias.c (original)
+++ fsf/trunk/libc/nis/nss_nis/nis-alias.c Mon May 23 00:03:17 2011
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996-2002, 2003, 2006 Free Software Foundation, Inc.
+/* Copyright (C) 1996-2002, 2003, 2006, 2011 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Thorsten Kukuk <kukuk@xxxxxxxxxxxxxxxxxxx>, 1996.
 
@@ -142,10 +142,10 @@
       int yperr;
 
       if (new_start)
-        yperr = yp_first (domain, "mail.aliases", &outkey, &keylen, &result,
+	yperr = yp_first (domain, "mail.aliases", &outkey, &keylen, &result,
 			  &len);
       else
-        yperr = yp_next (domain, "mail.aliases", oldkey, oldkeylen, &outkey,
+	yperr = yp_next (domain, "mail.aliases", oldkey, oldkeylen, &outkey,
 			 &keylen, &result, &len);
 
       if (__builtin_expect (yperr != YPERR_SUCCESS, 0))
@@ -153,20 +153,20 @@
 	  enum nss_status retval = yperr2nss (yperr);
 
 	  if (retval == NSS_STATUS_TRYAGAIN)
-            *errnop = errno;
-          return retval;
-        }
+	    *errnop = errno;
+	  return retval;
+	}
 
       if (__builtin_expect ((size_t) (len + 1) > buflen, 0))
-        {
+	{
 	  free (result);
-          *errnop = ERANGE;
-          return NSS_STATUS_TRYAGAIN;
-        }
+	  *errnop = ERANGE;
+	  return NSS_STATUS_TRYAGAIN;
+	}
       char *p = strncpy (buffer, result, len);
       buffer[len] = '\0';
       while (isspace (*p))
-        ++p;
+	++p;
       free (result);
 
       parse_res = _nss_nis_parse_aliasent (outkey, p, alias, buffer,
@@ -213,12 +213,24 @@
       return NSS_STATUS_UNAVAIL;
     }
 
-  size_t namlen = strlen (name);
-  char name2[namlen + 1];
-
   char *domain;
   if (__builtin_expect (yp_get_default_domain (&domain), 0))
     return NSS_STATUS_UNAVAIL;
+
+  size_t namlen = strlen (name);
+  char *name2;
+  int use_alloca = __libc_use_alloca (namlen + 1);
+  if (use_alloca)
+    name2 = __alloca (namlen + 1);
+  else
+    {
+      name2 = malloc (namlen + 1);
+      if (name2 == NULL)
+	{
+	  *errnop = ENOMEM;
+	  return NSS_STATUS_TRYAGAIN;
+	}
+    }
 
   /* Convert name to lowercase.  */
   size_t i;
@@ -230,6 +242,9 @@
   int len;
   int yperr = yp_match (domain, "mail.aliases", name2, namlen, &result, &len);
 
+  if (!use_alloca)
+    free (name2);
+
   if (__builtin_expect (yperr != YPERR_SUCCESS, 0))
     {
       enum nss_status retval = yperr2nss (yperr);

Modified: fsf/trunk/libc/nscd/nscd_getserv_r.c
==============================================================================
--- fsf/trunk/libc/nscd/nscd_getserv_r.c (original)
+++ fsf/trunk/libc/nscd/nscd_getserv_r.c Mon May 23 00:03:17 2011
@@ -1,4 +1,4 @@
-/* Copyright (C) 2007, 2009 Free Software Foundation, Inc.
+/* Copyright (C) 2007, 2009, 2011 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@xxxxxxxxxx>, 2007.
 
@@ -17,6 +17,7 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
+#include <assert.h>
 #include <errno.h>
 #include <string.h>
 #include <not-cancel.h>
@@ -80,6 +81,7 @@
 {
   int gc_cycle;
   int nretries = 0;
+  size_t alloca_used = 0;
 
   /* If the mapping is available, try to search there instead of
      communicating with the nscd.  */
@@ -88,13 +90,23 @@
 			       &gc_cycle);
   size_t protolen = proto == NULL ? 0 : strlen (proto);
   size_t keylen = critlen + 1 + protolen + 1;
-  char *key = alloca (keylen);
+  int alloca_key = __libc_use_alloca (keylen);
+  char *key;
+  if (alloca_key)
+    key = alloca_account (keylen, alloca_used);
+  else
+    {
+      key = malloc (keylen);
+      if (key == NULL)
+	return -1;
+    }
   memcpy (__mempcpy (__mempcpy (key, crit, critlen),
 		     "/", 1), proto ?: "", protolen + 1);
 
  retry:;
   const char *s_name = NULL;
   const char *s_proto = NULL;
+  int alloca_aliases_len = 0;
   const uint32_t *aliases_len = NULL;
   const char *aliases_list = NULL;
   int retval = -1;
@@ -136,8 +148,22 @@
 	  if (((uintptr_t) aliases_len & (__alignof__ (*aliases_len) - 1))
 	      != 0)
 	    {
-	      uint32_t *tmp = alloca (serv_resp.s_aliases_cnt
-				      * sizeof (uint32_t));
+	      uint32_t *tmp;
+	      alloca_aliases_len
+		= __libc_use_alloca (alloca_used
+				     + (serv_resp.s_aliases_cnt
+					* sizeof (uint32_t)));
+	      if (alloca_aliases_len)
+		tmp = __alloca (serv_resp.s_aliases_cnt * sizeof (uint32_t));
+	      else
+		{
+		  tmp = malloc (serv_resp.s_aliases_cnt * sizeof (uint32_t));
+		  if (tmp == NULL)
+		    {
+		      retval = ENOMEM;
+		      goto out;
+		    }
+		}
 	      aliases_len = memcpy (tmp, aliases_len,
 				    serv_resp.s_aliases_cnt
 				    * sizeof (uint32_t));
@@ -217,8 +243,24 @@
 
 	  if (serv_resp.s_aliases_cnt > 0)
 	    {
-	      aliases_len = alloca (serv_resp.s_aliases_cnt
-				    * sizeof (uint32_t));
+	      assert (alloca_aliases_len == 0);
+	      alloca_aliases_len
+		= __libc_use_alloca (alloca_used
+				     + (serv_resp.s_aliases_cnt
+					* sizeof (uint32_t)));
+	      if (alloca_aliases_len)
+		aliases_len = alloca (serv_resp.s_aliases_cnt
+				      * sizeof (uint32_t));
+	      else
+		{
+		  aliases_len = malloc (serv_resp.s_aliases_cnt
+					* sizeof (uint32_t));
+		  if (aliases_len == NULL)
+		    {
+		      retval = ENOMEM;
+		      goto out_close;
+		    }
+		}
 	      vec[n].iov_base = (void *) aliases_len;
 	      vec[n].iov_len = serv_resp.s_aliases_cnt * sizeof (uint32_t);
 
@@ -329,5 +371,10 @@
 	goto retry;
     }
 
+  if (!alloca_aliases_len)
+    free ((void *) aliases_len);
+  if (!alloca_key)
+    free (key);
+
   return retval;
 }

Modified: fsf/trunk/libc/posix/glob.c
==============================================================================
--- fsf/trunk/libc/posix/glob.c (original)
+++ fsf/trunk/libc/posix/glob.c Mon May 23 00:03:17 2011
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991-2002, 2003, 2004, 2005, 2006, 2007, 2008, 2010
+/* Copyright (C) 1991-2002, 2003, 2004, 2005, 2006, 2007, 2008, 2010, 2011
    Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
@@ -199,7 +199,7 @@
 
 static int glob_in_dir (const char *pattern, const char *directory,
 			int flags, int (*errfunc) (const char *, int),
-			glob_t *pglob);
+			glob_t *pglob, size_t alloca_used);
 extern int __glob_pattern_type (const char *pattern, int quote)
     attribute_hidden;
 
@@ -253,13 +253,18 @@
      glob_t *pglob;
 {
   const char *filename;
-  const char *dirname;
+  char *dirname = NULL;
   size_t dirlen;
   int status;
   size_t oldcount;
   int meta;
   int dirname_modified;
+  int malloc_dirname = 0;
   glob_t dirs;
+  int retval = 0;
+#ifdef _LIBC
+  size_t alloca_used = 0;
+#endif
 
   if (pattern == NULL || pglob == NULL || (flags & ~__GLOB_FLAGS) != 0)
     {
@@ -308,20 +313,26 @@
 	  const char *next;
 	  const char *rest;
 	  size_t rest_len;
-#ifdef __GNUC__
-	  char onealt[strlen (pattern) - 1];
-#else
-	  char *onealt = (char *) malloc (strlen (pattern) - 1);
-	  if (onealt == NULL)
-	    {
-	      if (!(flags & GLOB_APPEND))
+	  char *onealt;
+	  size_t pattern_len = strlen (pattern) - 1;
+#ifdef _LIBC
+	  int alloca_onealt = __libc_use_alloca (alloca_used + pattern_len);
+	  if (alloca_onealt)
+	    onealt = alloca_account (pattern_len, alloca_used);
+	  else
+#endif
+	    {
+	      onealt = (char *) malloc (pattern_len);
+	      if (onealt == NULL)
 		{
-		  pglob->gl_pathc = 0;
-		  pglob->gl_pathv = NULL;
+		  if (!(flags & GLOB_APPEND))
+		    {
+		      pglob->gl_pathc = 0;
+		      pglob->gl_pathv = NULL;
+		    }
+		  return GLOB_NOSPACE;
 		}
-	      return GLOB_NOSPACE;
-	    }
-#endif
+	    }
 
 	  /* We know the prefix for all sub-patterns.  */
 	  alt_start = mempcpy (onealt, pattern, begin - pattern);
@@ -332,9 +343,11 @@
 	  if (next == NULL)
 	    {
 	      /* It is an illegal expression.  */
-#ifndef __GNUC__
-	      free (onealt);
-#endif
+	    illegal_brace:
+#ifdef _LIBC
+	      if (__builtin_expect (!alloca_onealt, 0))
+#endif
+		free (onealt);
 	      return glob (pattern, flags & ~GLOB_BRACE, errfunc, pglob);
 	    }
 
@@ -344,13 +357,8 @@
 	    {
 	      rest = next_brace_sub (rest + 1, flags);
 	      if (rest == NULL)
-		{
-		  /* It is an illegal expression.  */
-#ifndef __GNUC__
-		  free (onealt);
-#endif
-		  return glob (pattern, flags & ~GLOB_BRACE, errfunc, pglob);
-		}
+		/* It is an illegal expression.  */
+		goto illegal_brace;
 	    }
 	  /* Please note that we now can be sure the brace expression
 	     is well-formed.  */
@@ -386,9 +394,10 @@
 	      /* If we got an error, return it.  */
 	      if (result && result != GLOB_NOMATCH)
 		{
-#ifndef __GNUC__
-		  free (onealt);
-#endif
+#ifdef _LIBC
+		  if (__builtin_expect (!alloca_onealt, 0))
+#endif
+		    free (onealt);
 		  if (!(flags & GLOB_APPEND))
 		    {
 		      globfree (pglob);
@@ -406,9 +415,10 @@
 	      assert (next != NULL);
 	    }
 
-#ifndef __GNUC__
-	  free (onealt);
-#endif
+#ifdef _LIBC
+	  if (__builtin_expect (!alloca_onealt, 0))
+#endif
+	    free (onealt);
 
 	  if (pglob->gl_pathc != firstc)
 	    /* We found some entries.  */
@@ -455,7 +465,7 @@
 	 case is nothing but a notation for a directory.  */
       if ((flags & (GLOB_TILDE|GLOB_TILDE_CHECK)) && pattern[0] == '~')
 	{
-	  dirname = pattern;
+	  dirname = (char *) pattern;
 	  dirlen = strlen (pattern);
 
 	  /* Set FILENAME to NULL as a special flag.  This is ugly but
@@ -473,9 +483,9 @@
 
 	  filename = pattern;
 #ifdef _AMIGA
-	  dirname = "";
+	  dirname = (char *) "";
 #else
-	  dirname = ".";
+	  dirname = (char *) ".";
 #endif
 	  dirlen = 0;
 	}
@@ -485,7 +495,7 @@
 	       && (flags & GLOB_NOESCAPE) == 0))
     {
       /* "/pattern" or "\\/pattern".  */
-      dirname = "/";
+      dirname = (char *) "/";
       dirlen = 1;
       ++filename;
     }
@@ -511,7 +521,17 @@
 	     from "d:/", since "d:" and "d:/" are not the same.*/
 	}
 #endif
-      newp = (char *) __alloca (dirlen + 1);
+#ifdef _LIBC
+      if (__libc_use_alloca (alloca_used + dirlen + 1))
+	newp = alloca_account (dirlen + 1, alloca_used);
+      else
+#endif
+	{
+	  newp = malloc (dirlen + 1);
+	  if (newp == NULL)
+	    return GLOB_NOSPACE;
+	  malloc_dirname = 1;
+	}
       *((char *) mempcpy (newp, pattern, dirlen)) = '\0';
       dirname = newp;
       ++filename;
@@ -551,7 +571,8 @@
 	      oldcount = pglob->gl_pathc + pglob->gl_offs;
 	      goto no_matches;
 	    }
-	  return val;
+	  retval = val;
+	  goto out;
 	}
     }
 
@@ -563,7 +584,8 @@
 	      && (dirname[2] == '\0' || dirname[2] == '/')))
 	{
 	  /* Look up home directory.  */
-	  const char *home_dir = getenv ("HOME");
+	  char *home_dir = getenv ("HOME");
+	  int malloc_home_dir = 0;
 # ifdef _AMIGA
 	  if (home_dir == NULL || home_dir[0] == '\0')
 	    home_dir = "SYS:";
@@ -582,7 +604,7 @@
 		/* `sysconf' does not support _SC_LOGIN_NAME_MAX.  Try
 		   a moderate value.  */
 		buflen = 20;
-	      name = (char *) __alloca (buflen);
+	      name = alloca_account (buflen, alloca_used);
 
 	      success = getlogin_r (name, buflen) == 0;
 	      if (success)
@@ -592,6 +614,7 @@
 		  long int pwbuflen = GETPW_R_SIZE_MAX ();
 		  char *pwtmpbuf;
 		  struct passwd pwbuf;
+		  int malloc_pwtmpbuf = 0;
 		  int save = errno;
 
 #    ifndef _LIBC
@@ -600,7 +623,18 @@
 		       Try a moderate value.  */
 		    pwbuflen = 1024;
 #    endif
-		  pwtmpbuf = (char *) __alloca (pwbuflen);
+		  if (__libc_use_alloca (alloca_used + pwbuflen))
+		    pwtmpbuf = alloca_account (pwbuflen, alloca_used);
+		  else
+		    {
+		      pwtmpbuf = malloc (pwbuflen);
+		      if (pwtmpbuf == NULL)
+			{
+			  retval = GLOB_NOSPACE;
+			  goto out;
+			}
+		      malloc_pwtmpbuf = 1;
+		    }
 
 		  while (getpwnam_r (name, &pwbuf, pwtmpbuf, pwbuflen, &p)
 			 != 0)
@@ -610,46 +644,115 @@
 			  p = NULL;
 			  break;
 			}
-#    ifdef _LIBC
-		      pwtmpbuf = extend_alloca (pwtmpbuf, pwbuflen,
+
+		      if (!malloc_pwtmpbuf
+			  && __libc_use_alloca (alloca_used
+						+ 2 * pwbuflen))
+			pwtmpbuf = extend_alloca_account (pwtmpbuf, pwbuflen,
+							  2 * pwbuflen,
+							  alloca_used);
+		      else
+			{
+			  char *newp = realloc (malloc_pwtmpbuf
+						? pwtmpbuf : NULL,
 						2 * pwbuflen);
-#    else
-		      pwbuflen *= 2;
-		      pwtmpbuf = (char *) __alloca (pwbuflen);
-#    endif
+			  if (newp == NULL)
+			    {
+			      if (__builtin_expect (malloc_pwtmpbuf, 0))
+				free (pwtmpbuf);
+			      retval = GLOB_NOSPACE;
+			      goto out;
+			    }
+			  pwtmpbuf = newp;
+			  pwbuflen = 2 * pwbuflen;
+			  malloc_pwtmpbuf = 1;
+			}
 		      __set_errno (save);
 		    }
 #   else
 		  p = getpwnam (name);
 #   endif
 		  if (p != NULL)
-		    home_dir = p->pw_dir;
+		    {
+		      if (!malloc_pwtmpbuf)
+			home_dir = p->pw_dir;
+		      else
+			{
+			  size_t home_dir_len = strlen (p->pw_dir) + 1;
+			  if (__libc_use_alloca (alloca_used + home_dir_len))
+			    home_dir = alloca_account (home_dir_len,
+						       alloca_used);
+			  else
+			    {
+			      home_dir = malloc (home_dir_len);
+			      if (home_dir == NULL)
+				{
+				  free (pwtmpbuf);
+				  retval = GLOB_NOSPACE;
+				  goto out;
+				}
+			      malloc_home_dir = 1;
+			    }
+			  memcpy (home_dir, p->pw_dir, home_dir_len);
+
+			  free (pwtmpbuf);
+			}
+		    }
 		}
 	    }
 	  if (home_dir == NULL || home_dir[0] == '\0')
 	    {
 	      if (flags & GLOB_TILDE_CHECK)
-		return GLOB_NOMATCH;
+		{
+		  if (__builtin_expect (malloc_home_dir, 0))
+		    free (home_dir);
+		  retval = GLOB_NOMATCH;
+		  goto out;
+		}
 	      else
-		home_dir = "~"; /* No luck.  */
+		home_dir = (char *) "~"; /* No luck.  */
 	    }
 #  endif /* WINDOWS32 */
 # endif
 	  /* Now construct the full directory.  */
 	  if (dirname[1] == '\0')
 	    {
+	      if (__builtin_expect (malloc_dirname, 0))
+		free (dirname);
+
 	      dirname = home_dir;
 	      dirlen = strlen (dirname);
+	      malloc_dirname = malloc_home_dir;
 	    }
 	  else
 	    {
 	      char *newp;
 	      size_t home_len = strlen (home_dir);
-	      newp = (char *) __alloca (home_len + dirlen);
+	      int use_alloca = __libc_use_alloca (alloca_used
+						  + home_len + dirlen);
+	      if (use_alloca)
+		newp = alloca_account (home_len + dirlen, alloca_used);
+	      else
+		{
+		  newp = malloc (home_len + dirlen);
+		  if (newp == NULL)
+		    {
+		      if (__builtin_expect (malloc_home_dir, 0))
+			free (home_dir);
+		      retval = GLOB_NOSPACE;
+		      goto out;
+		    }
+		}
+
 	      mempcpy (mempcpy (newp, home_dir, home_len),
 		       &dirname[1], dirlen);
+
+	      if (__builtin_expect (malloc_dirname, 0))
+		free (dirname);
+
 	      dirname = newp;
 	      dirlen += home_len - 1;
+	      malloc_dirname = !use_alloca;
 	    }
 	  dirname_modified = 1;
 	}
@@ -657,7 +760,8 @@
       else
 	{
 	  char *end_name = strchr (dirname, '/');
-	  const char *user_name;
+	  char *user_name;
+	  int malloc_user_name = 0;
 	  const char *home_dir;
 	  char *unescape = NULL;
 
@@ -677,7 +781,18 @@
 	  else
 	    {
 	      char *newp;
-	      newp = (char *) __alloca (end_name - dirname);
+	      if (__libc_use_alloca (alloca_used + (end_name - dirname)))
+		newp = alloca_account (end_name - dirname, alloca_used);
+	      else
+		{
+		  newp = malloc (end_name - dirname);
+		  if (newp == NULL)
+		    {
+		      retval = GLOB_NOSPACE;
+		      goto out;
+		    }
+		  malloc_user_name = 1;
+		}
 	      if (unescape != NULL)
 		{
 		  char *p = mempcpy (newp, dirname + 1,
@@ -714,6 +829,7 @@
 #  if defined HAVE_GETPWNAM_R || defined _LIBC
 	    long int buflen = GETPW_R_SIZE_MAX ();
 	    char *pwtmpbuf;
+	    int malloc_pwtmpbuf = 0;
 	    struct passwd pwbuf;
 	    int save = errno;
 
@@ -723,7 +839,21 @@
 		 moderate value.  */
 	      buflen = 1024;
 #   endif
-	    pwtmpbuf = (char *) __alloca (buflen);
+	    if (__libc_use_alloca (alloca_used + buflen))
+	      pwtmpbuf = alloca_account (buflen, alloca_used);
+	    else
+	      {
+		pwtmpbuf = malloc (buflen);
+		if (pwtmpbuf == NULL)
+		  {
+		  nomem_getpw:
+		    if (__builtin_expect (malloc_user_name, 0))
+		      free (user_name);
+		    retval = GLOB_NOSPACE;
+		    goto out;
+		  }
+		malloc_pwtmpbuf = 1;
+	      }
 
 	    while (getpwnam_r (user_name, &pwbuf, pwtmpbuf, buflen, &p) != 0)
 	      {
@@ -732,40 +862,77 @@
 		    p = NULL;
 		    break;
 		  }
-#   ifdef _LIBC
-		pwtmpbuf = extend_alloca (pwtmpbuf, buflen, 2 * buflen);
-#   else
-		buflen *= 2;
-		pwtmpbuf = __alloca (buflen);
-#   endif
+		if (!malloc_pwtmpbuf
+		    && __libc_use_alloca (alloca_used + 2 * buflen))
+		  pwtmpbuf = extend_alloca_account (pwtmpbuf, buflen,
+						    2 * buflen, alloca_used);
+		else
+		  {
+		    char *newp = realloc (malloc_pwtmpbuf ? pwtmpbuf : NULL,
+					  2 * buflen);
+		    if (newp == NULL)
+		      {
+			if (__builtin_expect (malloc_pwtmpbuf, 0))
+			  free (pwtmpbuf);
+			goto nomem_getpw;
+		      }
+		    pwtmpbuf = newp;
+		    malloc_pwtmpbuf = 1;
+		  }
 		__set_errno (save);
 	      }
 #  else
 	    p = getpwnam (user_name);
 #  endif
+
+	    if (__builtin_expect (malloc_user_name, 0))
+	      free (user_name);
+
+	    /* If we found a home directory use this.  */
 	    if (p != NULL)
-	      home_dir = p->pw_dir;
+	      {
+		size_t home_len = strlen (p->pw_dir);
+		size_t rest_len = end_name == NULL ? 0 : strlen (end_name);
+
+		if (__builtin_expect (malloc_dirname, 0))
+		  free (dirname);
+		malloc_dirname = 0;
+
+		if (__libc_use_alloca (alloca_used + home_len + rest_len + 1))
+		  dirname = alloca_account (home_len + rest_len + 1,
+					    alloca_used);
+		else
+		  {
+		    dirname = malloc (home_len + rest_len + 1);
+		    if (dirname == NULL)
+		      {
+			if (__builtin_expect (malloc_pwtmpbuf, 0))
+			  free (pwtmpbuf);
+			retval = GLOB_NOSPACE;
+			goto out;
+		      }
+		    malloc_dirname = 1;
+		  }
+		*((char *) mempcpy (mempcpy (dirname, p->pw_dir, home_len),
+				    end_name, rest_len)) = '\0';
+
+		dirlen = home_len + rest_len;
+		dirname_modified = 1;
+
+		if (__builtin_expect (malloc_pwtmpbuf, 0))
+		  free (pwtmpbuf);
+	      }
 	    else
-	      home_dir = NULL;
+	      {
+		if (__builtin_expect (malloc_pwtmpbuf, 0))
+		  free (pwtmpbuf);
+
+		if (flags & GLOB_TILDE_CHECK)
+		  /* We have to regard it as an error if we cannot find the
+		     home directory.  */
+		  return GLOB_NOMATCH;
+	      }
 	  }
-	  /* If we found a home directory use this.  */
-	  if (home_dir != NULL)
-	    {
-	      char *newp;
-	      size_t home_len = strlen (home_dir);
-	      size_t rest_len = end_name == NULL ? 0 : strlen (end_name);
-	      newp = (char *) __alloca (home_len + rest_len + 1);
-	      *((char *) mempcpy (mempcpy (newp, home_dir, home_len),
-				  end_name, rest_len)) = '\0';
-	      dirname = newp;
-	      dirlen = home_len + rest_len;
-	      dirname_modified = 1;
-	    }
-	  else
-	    if (flags & GLOB_TILDE_CHECK)
-	      /* We have to regard it as an error if we cannot find the
-		 home directory.  */
-	      return GLOB_NOMATCH;
 	}
 # endif	/* Not Amiga && not WINDOWS32.  */
     }
@@ -899,7 +1066,7 @@
 	  status = glob_in_dir (filename, dirs.gl_pathv[i],
 				((flags | GLOB_APPEND)
 				 & ~(GLOB_NOCHECK | GLOB_NOMAGIC)),
-				errfunc, pglob);
+				errfunc, pglob, alloca_used);
 	  if (status == GLOB_NOMATCH)
 	    /* No matches in this directory.  Try the next.  */
 	    continue;
@@ -1000,7 +1167,8 @@
 	}
       if (dirname_modified)
 	flags &= ~(GLOB_NOCHECK | GLOB_NOMAGIC);
-      status = glob_in_dir (filename, dirname, flags, errfunc, pglob);
+      status = glob_in_dir (filename, dirname, flags, errfunc, pglob,
+			    alloca_used);
       if (status != 0)
 	{
 	  if (status == GLOB_NOMATCH && flags != orig_flags
@@ -1063,7 +1231,11 @@
 	     sizeof (char *), collated_compare);
     }
 
-  return 0;
+ out:
+  if (__builtin_expect (malloc_dirname, 0))
+    free (dirname);
+
+  return retval;
 }
 #if defined _LIBC && !defined glob
 libc_hidden_def (glob)
@@ -1273,7 +1445,7 @@
 static int
 glob_in_dir (const char *pattern, const char *directory, int flags,
 	     int (*errfunc) (const char *, int),
-	     glob_t *pglob)
+	     glob_t *pglob, size_t alloca_used)
 {
   size_t dirlen = strlen (directory);
   void *stream = NULL;
@@ -1288,10 +1460,11 @@
   struct globnames *names = &init_names;
   struct globnames *names_alloca = &init_names;
   size_t nfound = 0;
-  size_t allocasize = sizeof (init_names);
   size_t cur = 0;
   int meta;
   int save;
+
+  alloca_used += sizeof (init_names);
 
   init_names.next = NULL;
   init_names.count = INITIAL_COUNT;
@@ -1308,20 +1481,36 @@
     {
       /* Since we use the normal file functions we can also use stat()
 	 to verify the file is there.  */
-      struct stat st;
-      struct_stat64 st64;
+      union
+      {
+	struct stat st;
+	struct_stat64 st64;
+      } ust;
       size_t patlen = strlen (pattern);
-      char *fullname = (char *) __alloca (dirlen + 1 + patlen + 1);
+      int alloca_fullname = __libc_use_alloca (alloca_used
+					       + dirlen + 1 + patlen + 1);
+      char *fullname;
+      if (alloca_fullname)
+	fullname = alloca_account (dirlen + 1 + patlen + 1, alloca_used);
+      else
+	{
+	  fullname = malloc (dirlen + 1 + patlen + 1);
+	  if (fullname == NULL)
+	    return GLOB_NOSPACE;
+	}
 
       mempcpy (mempcpy (mempcpy (fullname, directory, dirlen),
 			"/", 1),
 	       pattern, patlen + 1);
       if ((__builtin_expect (flags & GLOB_ALTDIRFUNC, 0)
-	   ? (*pglob->gl_stat) (fullname, &st)
-	   : __stat64 (fullname, &st64)) == 0)
+	   ? (*pglob->gl_stat) (fullname, &ust.st)
+	   : __stat64 (fullname, &ust.st64)) == 0)
 	/* We found this file to be existing.  Now tell the rest
 	   of the function to copy this name into the result.  */
 	flags |= GLOB_NOCHECK;
+
+      if (__builtin_expect (!alloca_fullname, 0))
+	free (fullname);
     }
   else
     {
@@ -1409,9 +1598,9 @@
 			  size_t size = (sizeof (struct globnames)
 					 + ((count - INITIAL_COUNT)
 					    * sizeof (char *)));
-			  allocasize += size;
-			  if (__libc_use_alloca (allocasize))
-			    newnames = names_alloca = __alloca (size);
+			  if (__libc_use_alloca (alloca_used + size))
+			    newnames = names_alloca
+			      = alloca_account (size, alloca_used);
 			  else if ((newnames = malloc (size))
 				   == NULL)
 			    goto memory_error;