/* mountlist.c -- return a list of mounted filesystems
- Copyright (C) 1991, 1992, 1997 Free Software Foundation, Inc.
+ Copyright (C) 1991, 1992, 1997-2000 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
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-#ifdef HAVE_CONFIG_H
+#if HAVE_CONFIG_H
# include <config.h>
#endif
# include <strings.h>
#endif
+#ifndef strstr
char *strstr ();
+#endif
char *xmalloc ();
char *xrealloc ();
char *xstrdup ();
-void error ();
-#ifdef HAVE_SYS_PARAM_H
+#include <errno.h>
+#ifndef errno
+extern int errno;
+#endif
+
+#ifdef HAVE_FCNTL_H
+# include <fcntl.h>
+#endif
+
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+
+#if HAVE_SYS_PARAM_H
# include <sys/param.h>
#endif
# include <sys/fs_types.h>
#endif
+#ifdef MOUNTED_NEXT_DEV /* BeOS. */
+# include <fs_info.h>
+# include <dirent.h>
+#endif
+
#ifdef MOUNTED_FREAD /* SVR2. */
# include <mnttab.h>
#endif
# define MOUNTED_GETMNTTBL
#endif
-#ifdef HAVE_SYS_MNTENT_H
+#if HAVE_SYS_MNTENT_H
/* This is to get MNTOPT_IGNORE on e.g. SVR4. */
# include <sys/mntent.h>
#endif
/* Return the value of the hexadecimal number represented by CP.
No prefix (like '0x') or suffix (like 'h') is expected to be
part of CP. */
+/* FIXME: this can overflow */
static int
-xatoi (cp)
- char *cp;
+xatoi (char *cp)
{
int val;
}
#endif /* MOUNTED_GETMNTENT1. */
-#if defined (MOUNTED_GETMNTINFO) && !defined (__NetBSD__) && !defined (__OpenBSD__)
+#if MOUNTED_GETMNTINFO
+
+# if ! HAVE_F_FSTYPENAME_IN_STATFS
static char *
-fstype_to_string (t)
- short t;
+fstype_to_string (short t)
{
switch (t)
{
-# ifdef MOUNT_PC
+# ifdef MOUNT_PC
case MOUNT_PC:
return "pc";
-# endif
-# ifdef MOUNT_MFS
+# endif
+# ifdef MOUNT_MFS
case MOUNT_MFS:
return "mfs";
-# endif
-# ifdef MOUNT_LO
+# endif
+# ifdef MOUNT_LO
case MOUNT_LO:
return "lo";
-# endif
-# ifdef MOUNT_TFS
+# endif
+# ifdef MOUNT_TFS
case MOUNT_TFS:
return "tfs";
-# endif
-# ifdef MOUNT_TMP
+# endif
+# ifdef MOUNT_TMP
case MOUNT_TMP:
return "tmp";
-# endif
-# ifdef MOUNT_UFS
+# endif
+# ifdef MOUNT_UFS
case MOUNT_UFS:
return "ufs" ;
-# endif
-# ifdef MOUNT_NFS
+# endif
+# ifdef MOUNT_NFS
case MOUNT_NFS:
return "nfs" ;
-# endif
-# ifdef MOUNT_MSDOS
+# endif
+# ifdef MOUNT_MSDOS
case MOUNT_MSDOS:
return "msdos" ;
-# endif
-# ifdef MOUNT_LFS
+# endif
+# ifdef MOUNT_LFS
case MOUNT_LFS:
return "lfs" ;
-# endif
-# ifdef MOUNT_LOFS
+# endif
+# ifdef MOUNT_LOFS
case MOUNT_LOFS:
return "lofs" ;
-# endif
-# ifdef MOUNT_FDESC
+# endif
+# ifdef MOUNT_FDESC
case MOUNT_FDESC:
return "fdesc" ;
-# endif
-# ifdef MOUNT_PORTAL
+# endif
+# ifdef MOUNT_PORTAL
case MOUNT_PORTAL:
return "portal" ;
-# endif
-# ifdef MOUNT_NULL
+# endif
+# ifdef MOUNT_NULL
case MOUNT_NULL:
return "null" ;
-# endif
-# ifdef MOUNT_UMAP
+# endif
+# ifdef MOUNT_UMAP
case MOUNT_UMAP:
return "umap" ;
-# endif
-# ifdef MOUNT_KERNFS
+# endif
+# ifdef MOUNT_KERNFS
case MOUNT_KERNFS:
return "kernfs" ;
-# endif
-# ifdef MOUNT_PROCFS
+# endif
+# ifdef MOUNT_PROCFS
case MOUNT_PROCFS:
return "procfs" ;
-# endif
-# ifdef MOUNT_AFS
+# endif
+# ifdef MOUNT_AFS
case MOUNT_AFS:
return "afs" ;
-# endif
-# ifdef MOUNT_CD9660
+# endif
+# ifdef MOUNT_CD9660
case MOUNT_CD9660:
return "cd9660" ;
-# endif
-# ifdef MOUNT_UNION
+# endif
+# ifdef MOUNT_UNION
case MOUNT_UNION:
return "union" ;
-# endif
-# ifdef MOUNT_DEVFS
+# endif
+# ifdef MOUNT_DEVFS
case MOUNT_DEVFS:
return "devfs" ;
-# endif
-# ifdef MOUNT_EXT2FS
+# endif
+# ifdef MOUNT_EXT2FS
case MOUNT_EXT2FS:
return "ext2fs" ;
-# endif
+# endif
default:
return "?";
}
}
+# endif /* ! HAVE_F_FSTYPENAME_IN_STATFS */
+
+/* __NetBSD__ || BSD_NET2 || __OpenBSD__ */
+static char *
+fsp_to_string (const struct statfs *fsp)
+{
+# if defined HAVE_F_FSTYPENAME_IN_STATFS
+ return (char *) (fsp->f_fstypename);
+# else
+ return fstype_to_string (fsp->f_type);
+# endif
+}
+
#endif /* MOUNTED_GETMNTINFO */
#ifdef MOUNTED_VMOUNT /* AIX. */
static char *
-fstype_to_string (t)
- int t;
+fstype_to_string (int t)
{
struct vfs_ent *e;
/* Return a list of the currently mounted filesystems, or NULL on error.
Add each entry to the tail of the list so that they stay in order.
If NEED_FS_TYPE is nonzero, ensure that the filesystem type fields in
- the returned list are valid. Otherwise, they might not be.
- If ALL_FS is zero, do not return entries for filesystems that
- are automounter (dummy) entries. */
+ the returned list are valid. Otherwise, they might not be. */
struct mount_entry *
-read_filesystem_list (need_fs_type, all_fs)
- int need_fs_type, all_fs;
+read_filesystem_list (int need_fs_type)
{
struct mount_entry *mount_list;
struct mount_entry *me;
- struct mount_entry *mtail;
-
- /* Start the list off with a dummy entry. */
- me = (struct mount_entry *) xmalloc (sizeof (struct mount_entry));
- me->me_next = NULL;
- mount_list = mtail = me;
+ struct mount_entry **mtail = &mount_list;
#ifdef MOUNTED_LISTMNTENT
{
if(listmntent(&mntlist, KMTAB, NULL, NULL) < 0)
return NULL;
- p = mntlist;
- while(p){
+ for (p = mntlist; p; p = p->next) {
mnt = p->ment;
me = (struct mount_entry*) xmalloc(sizeof (struct mount_entry));
me->me_devname = xstrdup(mnt->mnt_fsname);
me->me_mountdir = xstrdup(mnt->mnt_dir);
me->me_type = xstrdup(mnt->mnt_type);
+ 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 = -1;
- me->me_next = NULL;
- mtail->me_next = me;
- mtail = me;
- p = p->next;
+ *mtail = me;
+ mtail = &me->me_next;
}
freemntlist(mntlist);
}
while ((mnt = getmntent (fp)))
{
- if (!all_fs && (!strcmp (mnt->mnt_type, "ignore")
- || !strcmp (mnt->mnt_type, "auto")))
- continue;
-
me = (struct mount_entry *) xmalloc (sizeof (struct mount_entry));
me->me_devname = xstrdup (mnt->mnt_fsname);
me->me_mountdir = xstrdup (mnt->mnt_dir);
me->me_type = xstrdup (mnt->mnt_type);
+ me->me_dummy = ME_DUMMY (me->me_devname, me->me_type);
+ me->me_remote = ME_REMOTE (me->me_devname, me->me_type);
devopt = strstr (mnt->mnt_opts, "dev=");
if (devopt)
{
}
else
me->me_dev = (dev_t) -1; /* Magic; means not known yet. */
- me->me_next = NULL;
/* Add to the linked list. */
- mtail->me_next = me;
- mtail = me;
+ *mtail = me;
+ mtail = &me->me_next;
}
if (endmntent (fp) == 0)
- return NULL;
+ goto free_then_fail;
}
#endif /* MOUNTED_GETMNTENT1. */
entries = getmntinfo (&fsp, MNT_NOWAIT);
if (entries < 0)
return NULL;
- while (entries-- > 0)
+ for (; entries-- > 0; fsp++)
{
+ char *fs_type = fsp_to_string (fsp);
+
me = (struct mount_entry *) xmalloc (sizeof (struct mount_entry));
me->me_devname = xstrdup (fsp->f_mntfromname);
me->me_mountdir = xstrdup (fsp->f_mntonname);
-# if defined (__NetBSD__) || defined (__OpenBSD__)
- me->me_type = xstrdup (fsp->f_fstypename);
-# else
- me->me_type = fstype_to_string (fsp->f_type);
-# endif
+ me->me_type = fs_type;
+ 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. */
- me->me_next = NULL;
/* Add to the linked list. */
- mtail->me_next = me;
- mtail = me;
- fsp++;
+ *mtail = me;
+ mtail = &me->me_next;
}
}
#endif /* MOUNTED_GETMNTINFO */
int val;
struct fs_data fsd;
- while ((val = getmnt (&offset, &fsd, sizeof (fsd), NOSTAT_MANY,
- (char *) 0)) > 0)
+ while (errno = 0,
+ 0 < (val = getmnt (&offset, &fsd, sizeof (fsd), NOSTAT_MANY,
+ (char *) 0)))
{
me = (struct mount_entry *) xmalloc (sizeof (struct mount_entry));
me->me_devname = xstrdup (fsd.fd_req.devname);
me->me_mountdir = xstrdup (fsd.fd_req.path);
me->me_type = gt_names[fsd.fd_req.fstype];
+ 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 = fsd.fd_req.dev;
- me->me_next = NULL;
/* Add to the linked list. */
- mtail->me_next = me;
- mtail = me;
+ *mtail = me;
+ mtail = &me->me_next;
}
if (val < 0)
- return NULL;
+ goto free_then_fail;
}
#endif /* MOUNTED_GETMNT. */
+#if defined (MOUNTED_NEXT_DEV) /* BeOS */
+ {
+ /* The next_dev() and fs_stat_dev() system calls give the list of
+ all filesystems, including the information returned by statvfs()
+ (fs type, total blocks, free blocks etc.), but without the mount
+ point. But on BeOS all filesystems except / are mounted in the
+ rootfs, directly under /.
+ The directory name of the mount point is often, but not always,
+ identical to the volume name of the device.
+ We therefore get the list of subdirectories of /, and the list
+ of all filesystems, and match the two lists. */
+
+ DIR *dirp;
+ struct rootdir_entry
+ {
+ char *name;
+ dev_t dev;
+ ino_t ino;
+ struct rootdir_entry *next;
+ };
+ struct rootdir_entry *rootdir_list;
+ struct rootdir_entry **rootdir_tail;
+ int32 pos;
+ dev_t dev;
+ fs_info fi;
+
+ /* All volumes are mounted in the rootfs, directly under /. */
+ rootdir_list = NULL;
+ rootdir_tail = &rootdir_list;
+ dirp = opendir ("/");
+ if (dirp)
+ {
+ struct dirent *d;
+
+ while ((d = readdir (dirp)) != NULL)
+ {
+ char *name;
+ struct stat statbuf;
+
+ if (strcmp (d->d_name, "..") == 0)
+ continue;
+
+ if (strcmp (d->d_name, ".") == 0)
+ name = xstrdup ("/");
+ else
+ {
+ name = xmalloc (1 + strlen (d->d_name) + 1);
+ name[0] = '/';
+ strcpy (name + 1, d->d_name);
+ }
+
+ if (stat (name, &statbuf) >= 0 && S_ISDIR (statbuf.st_mode))
+ {
+ struct rootdir_entry *re;
+
+ re = (struct rootdir_entry *) xmalloc (sizeof (struct rootdir_entry));
+ re->name = name;
+ re->dev = statbuf.st_dev;
+ re->ino = statbuf.st_ino;
+
+ /* Add to the linked list. */
+ *rootdir_tail = re;
+ rootdir_tail = &re->next;
+ }
+ else
+ free (name);
+ }
+ closedir (dirp);
+ }
+ *rootdir_tail = NULL;
+
+ for (pos = 0; (dev = next_dev (&pos)) >= 0; )
+ if (fs_stat_dev (dev, &fi) >= 0)
+ {
+ /* Note: fi.dev == dev. */
+ struct rootdir_entry *re;
+
+ for (re = rootdir_list; re; re = re->next)
+ if (re->dev == fi.dev && re->ino == fi.root)
+ break;
+
+ me = (struct mount_entry *) xmalloc (sizeof (struct mount_entry));
+ me->me_devname = xstrdup (fi.device_name[0] != '\0' ? fi.device_name : fi.fsh_name);
+ me->me_mountdir = xstrdup (re != NULL ? re->name : fi.fsh_name);
+ me->me_type = xstrdup (fi.fsh_name);
+ me->me_dev = fi.dev;
+ me->me_dummy = 0;
+ me->me_remote = (fi.flags & B_FS_IS_SHARED) != 0;
+
+ /* Add to the linked list. */
+ *mtail = me;
+ mtail = &me->me_next;
+ }
+ *mtail = NULL;
+
+ while (rootdir_list != NULL)
+ {
+ struct rootdir_entry *re = rootdir_list;
+ rootdir_list = re->next;
+ free (re->name);
+ free (re);
+ }
+ }
+#endif /* MOUNTED_NEXT_DEV */
+
#if defined (MOUNTED_GETFSSTAT) /* __alpha running OSF_1 */
{
int numsys, counter, bufsize;
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_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. */
- me->me_next = NULL;
/* Add to the linked list. */
- mtail->me_next = me;
- mtail = me;
+ *mtail = me;
+ mtail = &me->me_next;
}
free (stats);
me->me_type = xstrdup (typebuf);
}
# endif
- me->me_next = NULL;
+ me->me_dummy = ME_DUMMY (me->me_devname, me->me_type);
+ me->me_remote = ME_REMOTE (me->me_devname, me->me_type);
/* Add to the linked list. */
- mtail->me_next = me;
- mtail = me;
+ *mtail = me;
+ mtail = &me->me_next;
+ }
+
+ if (ferror (fp))
+ {
+ int saved_errno = errno;
+ fclose (fp);
+ errno = saved_errno;
+ goto free_then_fail;
}
if (fclose (fp) == EOF)
- return NULL;
+ goto free_then_fail;
}
#endif /* MOUNTED_FREAD || MOUNTED_FREAD_FSTYP. */
me->me_devname = xstrdup ( (*ent)->mt_resource);
me->me_mountdir = xstrdup( (*ent)->mt_directory);
me->me_type = xstrdup ((*ent)->mt_fstype);
+ 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. */
- me->me_next = NULL;
/* Add to the linked list. */
- mtail->me_next = me;
- mtail = me;
+ *mtail = me;
+ mtail = &me->me_next;
}
endmnttbl();
}
char *table = MNTTAB;
FILE *fp;
int ret;
+ int lockfd = -1;
+
+# if defined F_RDLCK && defined F_SETLKW
+ /* MNTTAB_LOCK is a macro name of our own invention; it's not present in
+ e.g. Solaris 2.6. If the SVR4 folks ever define a macro
+ for this file name, we should use their macro name instead.
+ (Why not just lock MNTTAB directly? We don't know.) */
+# ifndef MNTTAB_LOCK
+# define MNTTAB_LOCK "/etc/.mnttab.lock"
+# endif
+ lockfd = open (MNTTAB_LOCK, O_RDONLY);
+ if (0 <= lockfd)
+ {
+ struct flock flock;
+ flock.l_type = F_RDLCK;
+ flock.l_whence = SEEK_SET;
+ flock.l_start = 0;
+ flock.l_len = 0;
+ while (fcntl (lockfd, F_SETLKW, &flock) == -1)
+ if (errno != EINTR)
+ {
+ int saved_errno = errno;
+ close (lockfd);
+ errno = saved_errno;
+ return NULL;
+ }
+ }
+ else if (errno != ENOENT)
+ return NULL;
+# endif
+ errno = 0;
fp = fopen (table, "r");
if (fp == NULL)
- return NULL;
-
- while ((ret = getmntent (fp, &mnt)) == 0)
+ ret = errno;
+ else
{
- /* Don't show automounted filesystems twice on e.g., Solaris. */
- if (!all_fs && MNT_IGNORE (&mnt))
- continue;
-
- me = (struct mount_entry *) xmalloc (sizeof (struct mount_entry));
- me->me_devname = xstrdup (mnt.mnt_special);
- me->me_mountdir = xstrdup (mnt.mnt_mountp);
- me->me_type = xstrdup (mnt.mnt_fstype);
- me->me_dev = (dev_t) -1; /* Magic; means not known yet. */
- me->me_next = NULL;
+ while ((ret = getmntent (fp, &mnt)) == 0)
+ {
+ me = (struct mount_entry *) xmalloc (sizeof (struct mount_entry));
+ me->me_devname = xstrdup (mnt.mnt_special);
+ me->me_mountdir = xstrdup (mnt.mnt_mountp);
+ me->me_type = xstrdup (mnt.mnt_fstype);
+ me->me_dummy = MNT_IGNORE (&mnt) != 0;
+ me->me_remote = ME_REMOTE (me->me_devname, me->me_type);
+ me->me_dev = (dev_t) -1; /* Magic; means not known yet. */
+
+ /* Add to the linked list. */
+ *mtail = me;
+ mtail = &me->me_next;
+ }
- /* Add to the linked list. */
- mtail->me_next = me;
- mtail = me;
+ ret = fclose (fp) == EOF ? errno : 0 < ret ? 0 : -1;
}
- if (ret > 0)
- return NULL;
- if (fclose (fp) == EOF)
- return NULL;
+ if (0 <= lockfd && close (lockfd) != 0)
+ ret = errno;
+
+ if (0 <= ret)
+ {
+ errno = ret;
+ goto free_then_fail;
+ }
}
#endif /* MOUNTED_GETMNTENT2. */
for (thisent = entries; thisent < entries + bufsize;
thisent += vmp->vmt_length)
{
+ char *options, *ignore;
+
vmp = (struct vmount *) thisent;
me = (struct mount_entry *) xmalloc (sizeof (struct mount_entry));
if (vmp->vmt_flags & MNT_REMOTE)
{
char *host, *path;
+ me->me_remote = 1;
/* Prepend the remote pathname. */
host = thisent + vmp->vmt_data[VMT_HOSTNAME].vmt_off;
path = thisent + vmp->vmt_data[VMT_OBJECT].vmt_off;
}
else
{
+ me->me_remote = 0;
me->me_devname = xstrdup (thisent +
vmp->vmt_data[VMT_OBJECT].vmt_off);
}
me->me_mountdir = xstrdup (thisent + vmp->vmt_data[VMT_STUB].vmt_off);
me->me_type = xstrdup (fstype_to_string (vmp->vmt_gfstype));
+ options = thisent + vmp->vmt_data[VMT_ARGS].vmt_off;
+ ignore = strstr (options, "ignore");
+ me->me_dummy = (ignore
+ && (ignore == options || ignore[-1] == ',')
+ && (ignore[sizeof "ignore" - 1] == ','
+ || ignore[sizeof "ignore" - 1] == '\0'));
me->me_dev = (dev_t) -1; /* vmt_fsid might be the info we want. */
- me->me_next = NULL;
/* Add to the linked list. */
- mtail->me_next = me;
- mtail = me;
+ *mtail = me;
+ mtail = &me->me_next;
}
free (entries);
}
#endif /* MOUNTED_VMOUNT. */
- /* Free the dummy head. */
- me = mount_list;
- mount_list = mount_list->me_next;
- free (me);
+ *mtail = NULL;
return mount_list;
+
+
+ free_then_fail:
+ {
+ int saved_errno = errno;
+ *mtail = NULL;
+
+ while (mount_list)
+ {
+ me = mount_list->me_next;
+ free (mount_list->me_devname);
+ free (mount_list->me_mountdir);
+ /* FIXME: me_type is not always malloced. */
+ free (mount_list);
+ mount_list = me;
+ }
+
+ errno = saved_errno;
+ return NULL;
+ }
}
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