144 lines
3.0 KiB
C++
144 lines
3.0 KiB
C++
/* umount.cc
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#include <stdio.h>
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#include <string.h>
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#include <sys/mount.h>
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#include <mntent.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <getopt.h>
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#include <cygwin/version.h>
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static void remove_all_user_mounts ();
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static const char *progname;
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struct option longopts[] =
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{
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{"help", no_argument, NULL, 'h' },
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{"remove-user-mounts", no_argument, NULL, 'U'},
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{"version", no_argument, NULL, 'V'},
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{NULL, 0, NULL, 0}
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};
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char opts[] = "hUV";
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static void
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usage (FILE *where = stderr)
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{
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fprintf (where, "\
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Usage: %s [OPTION] [<posixpath>]\n\
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\n\
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Unmount filesystems\n\
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\n\
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-h, --help output usage information and exit\n\
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-U, --remove-user-mounts remove all user mounts\n\
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-V, --version output version information and exit\n\
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\n", progname);
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exit (where == stderr ? 1 : 0);
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}
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static void
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error (const char *path)
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{
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fprintf (stderr, "%s: %s: %s\n", progname, path, strerror (errno));
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exit (1);
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}
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static void
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print_version ()
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{
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printf ("umount (cygwin) %d.%d.%d\n"
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"Unmount filesystem utility\n"
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"Copyright (C) 1996 - %s Cygwin Authors\n"
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"This is free software; see the source for copying conditions. There is NO\n"
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"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n",
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CYGWIN_VERSION_DLL_MAJOR / 1000,
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CYGWIN_VERSION_DLL_MAJOR % 1000,
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CYGWIN_VERSION_DLL_MINOR,
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strrchr (__DATE__, ' ') + 1);
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}
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int
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main (int argc, char **argv)
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{
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int i;
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int flags = 0;
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int default_flag = MOUNT_SYSTEM;
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enum do_what
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{
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nada,
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saw_remove_all_user_mounts
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} do_what = nada;
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progname = program_invocation_short_name;
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if (argc == 1)
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usage ();
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while ((i = getopt_long (argc, argv, opts, longopts, NULL)) != EOF)
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switch (i)
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{
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case 'h':
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usage (stdout);
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case 'U':
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if (do_what != nada)
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usage ();
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do_what = saw_remove_all_user_mounts;
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break;
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case 'V':
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print_version ();
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exit (0);
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default:
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fprintf (stderr, "Try `%s --help' for more information.\n", progname);
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exit (1);
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}
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switch (do_what)
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{
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case saw_remove_all_user_mounts:
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if (optind != argc)
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usage ();
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remove_all_user_mounts ();
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break;
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default:
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if (optind != argc - 1)
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usage ();
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if (cygwin_umount (argv[optind], flags | default_flag) != 0)
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error (argv[optind]);
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}
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return 0;
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}
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/* remove_all_user_mounts: Unmount all user mounts. */
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static void
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remove_all_user_mounts ()
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{
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FILE *m = setmntent ("/-not-used-", "r");
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struct mntent *p;
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while ((p = getmntent (m)) != NULL)
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{
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/* Remove the mount if it's a user mount. */
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if (strncmp (p->mnt_type, "user", 4) == 0 &&
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strstr (p->mnt_opts, "noumount") == NULL)
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{
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if (cygwin_umount (p->mnt_dir, 0))
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error (p->mnt_dir);
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/* We've modified the table so we need to start over. */
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endmntent (m);
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m = setmntent ("/-not-used-", "r");
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}
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}
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endmntent (m);
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}
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