2.5-18.1

1 files changed, 15 insertions, 2 deletions

diff --git a/sysdeps/unix/sysv/linux/readonly-area.c b/sysdeps/unix/sysv/linux/readonly-area.c
index ce5321bcef..69e926a7a1 100644
--- a/sysdeps/unix/sysv/linux/readonly-area.c
+++ b/sysdeps/unix/sysv/linux/readonly-area.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2004 Free Software Foundation, Inc.
+/* Copyright (C) 2004, 2005 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -16,6 +16,7 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
+#include <errno.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <stdio_ext.h>
@@ -33,7 +34,19 @@ __readonly_area (const char *ptr, size_t size)
 
   FILE *fp = fopen ("/proc/self/maps", "rc");
   if (fp == NULL)
-    return -1;
+    {
+      /* It is the system administrator's choice to not have /proc
+	 available to this process (e.g., because it runs in a chroot
+	 environment.  Don't fail in this case.  */
+      if (errno == ENOENT
+	  /* The kernel has a bug in that a process is denied access
+	     to the /proc filesystem if it is set[ug]id.  There has
+	     been no willingness to change this in the kernel so
+	     far.  */
+	  || errno == EACCES)
+	return 1;
+      return -1;
+    }
 
   /* We need no locking.  */
   __fsetlocking (fp, FSETLOCKING_BYCALLER);