Include "xalloc.h".

[gnulib.git] / lib / mountlist.c

diff --git a/lib/mountlist.c b/lib/mountlist.c
index 4784140..ca1100f 100644 (file)
--- a/lib/mountlist.c
+++ b/lib/mountlist.c
@@ -1,5 +1,5 @@
 /* mountlist.c -- return a list of mounted filesystems
-   Copyright (C) 1991, 1992, 1997-2000 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
@@ -21,25 +21,23 @@
 
 #include <stdio.h>
 #include <sys/types.h>
-#include "mountlist.h"
+
 
 #ifdef STDC_HEADERS
 # include <stdlib.h>
 #else
 void free ();
 #endif
-#if defined(STDC_HEADERS) || defined(HAVE_STRING_H)
+#if defined STDC_HEADERS || defined HAVE_STRING_H
 # include <string.h>
 #else
 # include <strings.h>
 #endif
+#include "xalloc.h"
 
 #ifndef strstr
 char *strstr ();
 #endif
-char *xmalloc ();
-char *xrealloc ();
-char *xstrdup ();
 
 #include <errno.h>
 #ifndef errno
@@ -58,18 +56,33 @@ extern int errno;
 # include <sys/param.h>
 #endif
 
-#if defined (MOUNTED_GETFSSTAT)        /* __alpha running OSF_1 */
-# include <sys/mount.h>
-# include <sys/fs_types.h>
+#if defined MOUNTED_GETFSSTAT  /* OSF_1 and Darwin1.3.x */
+# if HAVE_SYS_UCRED_H
+#  include <sys/ucred.h> /* needed by powerpc-apple-darwin1.3.7 */
+# endif
+# if HAVE_SYS_MOUNT_H
+#  include <sys/mount.h>
+# endif
+# if HAVE_SYS_FS_TYPES_H
+#  include <sys/fs_types.h> /* needed by powerpc-apple-darwin1.3.7 */
+# endif
+# if HAVE_STRUCT_FSSTAT_F_FSTYPENAME
+#  define FS_TYPE(Ent) ((Ent).f_fstypename)
+# else
+#  define FS_TYPE(Ent) mnt_names[(Ent).f_type]
+# endif
 #endif /* MOUNTED_GETFSSTAT */
 
 #ifdef MOUNTED_GETMNTENT1      /* 4.3BSD, SunOS, HP-UX, Dynix, Irix.  */
 # include <mntent.h>
-# if !defined(MOUNTED)
-#  if defined(MNT_MNTTAB)      /* HP-UX.  */
+# if !defined MOUNTED
+#  if defined _PATH_MOUNTED    /* GNU libc  */
+#   define MOUNTED _PATH_MOUNTED
+#  endif
+#  if defined MNT_MNTTAB       /* HP-UX.  */
 #   define MOUNTED MNT_MNTTAB
 #  endif
-#  if defined(MNTTABNAME)      /* Dynix.  */
+#  if defined MNTTABNAME       /* Dynix.  */
 #   define MOUNTED MNTTABNAME
 #  endif
 # endif
@@ -84,7 +97,7 @@ extern int errno;
 # include <sys/fs_types.h>
 #endif
 
-#ifdef MOUNTED_NEXT_DEV                /* BeOS.  */
+#ifdef MOUNTED_FS_STAT_DEV     /* BeOS.  */
 # include <fs_info.h>
 # include <dirent.h>
 #endif
@@ -123,12 +136,16 @@ extern int errno;
 # include <sys/mntent.h>
 #endif
 
-#if defined (MNTOPT_IGNORE) && defined (HAVE_HASMNTOPT)
+#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
@@ -417,7 +434,7 @@ read_filesystem_list (int need_fs_type)
   }
 #endif /* MOUNTED_GETMNT. */
 
-#if defined (MOUNTED_NEXT_DEV) /* BeOS */
+#if defined MOUNTED_FS_STAT_DEV /* BeOS */
   {
     /* The next_dev() and fs_stat_dev() system calls give the list of
        all filesystems, including the information returned by statvfs()
@@ -468,7 +485,7 @@ read_filesystem_list (int need_fs_type)
                 strcpy (name + 1, d->d_name);
               }
 
-            if (stat (name, &statbuf) >= 0 && S_ISDIR (statbuf.st_mode))
+            if (lstat (name, &statbuf) >= 0 && S_ISDIR (statbuf.st_mode))
               {
                 struct rootdir_entry *re;
 
@@ -520,9 +537,9 @@ read_filesystem_list (int need_fs_type)
         free (re);
       }
   }
-#endif /* MOUNTED_NEXT_DEV */
+#endif /* MOUNTED_FS_STAT_DEV */
 
-#if defined (MOUNTED_GETFSSTAT)        /* __alpha running OSF_1 */
+#if defined MOUNTED_GETFSSTAT  /* __alpha running OSF_1 */
   {
     int numsys, counter, bufsize;
     struct statfs *stats;
@@ -546,7 +563,7 @@ read_filesystem_list (int need_fs_type)
        me = (struct mount_entry *) xmalloc (sizeof (struct mount_entry));
        me->me_devname = xstrdup (stats[counter].f_mntfromname);
        me->me_mountdir = xstrdup (stats[counter].f_mntonname);
-       me->me_type = mnt_names[stats[counter].f_type];
+       me->me_type = xstrdup (FS_TYPE (stats[counter]));
        me->me_dummy = ME_DUMMY (me->me_devname, me->me_type);
        me->me_remote = ME_REMOTE (me->me_devname, me->me_type);
        me->me_dev = (dev_t) -1;        /* Magic; means not known yet. */
@@ -560,7 +577,7 @@ read_filesystem_list (int need_fs_type)
   }
 #endif /* MOUNTED_GETFSSTAT */
 
-#if defined (MOUNTED_FREAD) || defined (MOUNTED_FREAD_FSTYP) /* SVR[23].  */
+#if defined MOUNTED_FREAD || defined MOUNTED_FREAD_FSTYP /* SVR[23].  */
   {
     struct mnttab mnt;
     char *table = "/etc/mnttab";
@@ -713,16 +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;