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/* umount.cc
Copyright 1996, 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#include <stdio.h>
#include <string.h>
#include <sys/mount.h>
#include <mntent.h>
#include <stdlib.h>
#include <errno.h>
#include <getopt.h>
static void remove_all_mounts ();
static void remove_all_user_mounts ();
static void remove_all_system_mounts ();
static void remove_cygdrive_prefix (int flags);
static const char version[] = "$Revision$";
static const char *progname;
struct option longopts[] =
{
{"help", no_argument, NULL, 'h' },
{"remove-all-mounts", no_argument, NULL, 'A'},
{"remove-cygdrive-prefix", no_argument, NULL, 'c'},
{"remove-system-mounts", no_argument, NULL, 'S'},
{"remove-user-mounts", no_argument, NULL, 'U'},
{"system", no_argument, NULL, 's'},
{"user", no_argument, NULL, 'u'},
{"version", no_argument, NULL, 'v'},
{NULL, 0, NULL, 0}
};
char opts[] = "AchsSuUv";
static void
usage (FILE *where = stderr)
{
fprintf (where, "\
Usage: %s [OPTION] [<posixpath>]\n\
Unmount filesystems\n\
\n\
-A, --remove-all-mounts remove all mounts\n\
-c, --remove-cygdrive-prefix remove cygdrive prefix\n\
-h, --help output usage information and exit\n\
-s, --system remove system mount (default)\n\
-S, --remove-system-mounts remove all system mounts\n\
-u, --user remove user mount\n\
-U, --remove-user-mounts remove all user mounts\n\
-v, --version output version information and exit\n\
", progname);
exit (where == stderr ? 1 : 0);
}
static void
error (const char *path)
{
fprintf (stderr, "%s: %s: %s\n", progname, path, strerror (errno));
exit (1);
}
static void
print_version ()
{
const char *v = strchr (version, ':');
int len;
if (!v)
{
v = "?";
len = 1;
}
else
{
v += 2;
len = strchr (v, ' ') - v;
}
printf ("\
%s (cygwin) %.*s\n\
Filesystem Utility\n\
Copyright 1996, 1998, 1999, 2000, 2001, 2002\n\
Compiled on %s\n\
", progname, len, v, __DATE__);
}
int
main (int argc, char **argv)
{
int i;
int flags = 0;
int default_flag = MOUNT_SYSTEM;
enum do_what
{
nada,
saw_remove_all_mounts,
saw_remove_cygdrive_prefix,
saw_remove_all_system_mounts,
saw_remove_all_user_mounts
} do_what = nada;
progname = strrchr (argv[0], '/');
if (progname == NULL)
progname = strrchr (argv[0], '\\');
if (progname == NULL)
progname = argv[0];
else
progname++;
if (argc == 1)
usage ();
while ((i = getopt_long (argc, argv, opts, longopts, NULL)) != EOF)
switch (i)
{
case 'A':
if (do_what != nada)
usage ();
do_what = saw_remove_all_mounts;
break;
case 'c':
if (do_what != nada)
usage ();
do_what = saw_remove_cygdrive_prefix;
break;
case 'h':
usage (stdout);
case 's':
flags |= MOUNT_SYSTEM;
break;
case 'S':
if (do_what != nada)
usage ();
do_what = saw_remove_all_system_mounts;
break;
case 'u':
flags &= ~MOUNT_SYSTEM;
default_flag = 0;
break;
case 'U':
if (do_what != nada)
usage ();
do_what = saw_remove_all_user_mounts;
break;
case 'v':
print_version ();
exit (0);
default:
usage ();
}
switch (do_what)
{
case saw_remove_all_mounts:
if (optind != argc)
usage ();
remove_all_mounts ();
break;
case saw_remove_cygdrive_prefix:
if (optind != argc)
usage ();
remove_cygdrive_prefix (flags | default_flag);
break;
case saw_remove_all_system_mounts:
if (optind != argc)
usage ();
remove_all_system_mounts ();
break;
case saw_remove_all_user_mounts:
if (optind != argc)
usage ();
remove_all_user_mounts ();
break;
default:
if (optind != argc - 1)
usage ();
if (cygwin_umount (argv[optind], flags | default_flag) != 0)
error (argv[optind]);
}
return 0;
}
/* remove_all_mounts: Unmount all mounts. */
static void
remove_all_mounts ()
{
remove_all_user_mounts ();
remove_all_system_mounts ();
}
/* remove_all_user_mounts: Unmount all user mounts. */
static void
remove_all_user_mounts ()
{
FILE *m = setmntent ("/-not-used-", "r");
struct mntent *p;
while ((p = getmntent (m)) != NULL)
{
/* Remove the mount if it's a user mount. */
if (strncmp (p->mnt_type, "user", 4) == 0 &&
strstr (p->mnt_opts, "noumount") == NULL)
{
if (cygwin_umount (p->mnt_dir, 0))
error (p->mnt_dir);
/* We've modified the table so we need to start over. */
endmntent (m);
m = setmntent ("/-not-used-", "r");
}
}
endmntent (m);
}
/* remove_all_system_mounts: Unmount all system mounts. */
static void
remove_all_system_mounts ()
{
FILE *m = setmntent ("/-not-used-", "r");
struct mntent *p;
while ((p = getmntent (m)) != NULL)
{
/* Remove the mount if it's a system mount. */
if (strncmp (p->mnt_type, "system", 6) == 0 &&
strstr (p->mnt_opts, "noumount") == NULL)
{
if (cygwin_umount (p->mnt_dir, MOUNT_SYSTEM))
error (p->mnt_dir);
/* We've modified the table so we need to start over. */
endmntent (m);
m = setmntent ("/-not-used-", "r");
}
}
endmntent (m);
}
/* remove_cygdrive_prefix: Remove cygdrive user or system path prefix. */
static void
remove_cygdrive_prefix (int flags)
{
int res = cygwin_umount (NULL, flags | MOUNT_CYGDRIVE);
if (res)
error ("remove_cygdrive_prefix");
exit (0);
}
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