X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fmountlist.c;h=ca1100f431511e9471f2aa4227e63a0a4f44ff23;hb=279342da52719ba89de13f7c8b99660695b95080;hp=79f0d535ed43274c9e23c2c30fc8629e6d65e0cd;hpb=92f1833affa37844e22d2ebe4ca4c6ba924377f4;p=gnulib.git

diff --git a/lib/mountlist.c b/lib/mountlist.c
index 79f0d535e..ca1100f43 100644
--- a/lib/mountlist.c
+++ b/lib/mountlist.c
@@ -1,5 +1,5 @@
 /* mountlist.c -- return a list of mounted filesystems
-   Copyright (C) 1991, 1992, 1997-2001 Free Software Foundation, Inc.
+   Copyright (C) 1991, 1992, 1997-2003 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -21,8 +21,7 @@
 
 #include <stdio.h>
 #include <sys/types.h>
-#include "mountlist.h"
-#include "unlocked-io.h"
+
 
 #ifdef STDC_HEADERS
 # include <stdlib.h>
@@ -34,13 +33,11 @@ void free ();
 #else
 # include <strings.h>
 #endif
+#include "xalloc.h"
 
 #ifndef strstr
 char *strstr ();
 #endif
-char *xmalloc ();
-char *xrealloc ();
-char *xstrdup ();
 
 #include <errno.h>
 #ifndef errno
@@ -139,12 +136,16 @@ extern int errno;
 # include <sys/mntent.h>
 #endif
 
+#undef MNT_IGNORE
 #if defined MNTOPT_IGNORE && defined HAVE_HASMNTOPT
 # define MNT_IGNORE(M) hasmntopt ((M), MNTOPT_IGNORE)
 #else
 # define MNT_IGNORE(M) 0
 #endif
 
+#include "mountlist.h"
+#include "unlocked-io.h"
+
 #ifdef MOUNTED_GETMNTENT1	/* 4.3BSD, SunOS, HP-UX, Dynix, Irix.  */
 /* Return the value of the hexadecimal number represented by CP.
    No prefix (like '0x') or suffix (like 'h') is expected to be
@@ -729,16 +730,27 @@ read_filesystem_list (int need_fs_type)
     int bufsize;
     char *entries, *thisent;
     struct vmount *vmp;
+    int n_entries;
+    int i;
 
     /* Ask how many bytes to allocate for the mounted filesystem info.  */
-    mntctl (MCTL_QUERY, sizeof bufsize, (struct vmount *) &bufsize);
+    if (mntctl (MCTL_QUERY, sizeof bufsize, (struct vmount *) &bufsize) != 0)
+      return NULL;
     entries = xmalloc (bufsize);
 
     /* Get the list of mounted filesystems.  */
-    mntctl (MCTL_QUERY, bufsize, (struct vmount *) entries);
+    n_entries = mntctl (MCTL_QUERY, bufsize, (struct vmount *) entries);
+    if (n_entries < 0)
+      {
+	int saved_errno = errno;
+	free (entries);
+	errno = saved_errno;
+	return NULL;
+      }
 
-    for (thisent = entries; thisent < entries + bufsize;
-	 thisent += vmp->vmt_length)
+    for (i = 0, thisent = entries;
+	 i < n_entries;
+	 i++, thisent += vmp->vmt_length)
       {
 	char *options, *ignore;