mirror of
https://github.com/topjohnwu/ndk-busybox.git
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6a6798b8e4
things down a bit, fixed a number of funky corner cases, added support for several new features (things like mount --move, mount --bind, lazy unounts, automatic detection of loop mounts, and so on). Probably broke several other things, but it's fixable. (Bang on it, tell me what doesn't work for you...) Note: you no longer need to say "-o loop". It does that for you when necessary. Still need to add "user mount" support, which involves making mount suid. Not too hard to do under the new infrastructure, just haven't done it yet... The previous code had the following notes, that belong in the version control comments: - * 3/21/1999 Charles P. Wright <cpwright@cpwright.com> - * searches through fstab when -a is passed - * will try mounting stuff with all fses when passed -t auto - * - * 1999-04-17 Dave Cinege...Rewrote -t auto. Fixed ro mtab. - * - * 1999-10-07 Erik Andersen <andersen@codepoet.org>. - * Rewrite of a lot of code. Removed mtab usage (I plan on - * putting it back as a compile-time option some time), - * major adjustments to option parsing, and some serious - * dieting all around. - * - * 1999-11-06 mtab support is back - andersee - * - * 2000-01-12 Ben Collins <bcollins@debian.org>, Borrowed utils-linux's - * mount to add loop support. - * - * 2000-04-30 Dave Cinege <dcinege@psychosis.com> - * Rewrote fstab while loop and lower mount section. Can now do - * single mounts from fstab. Can override fstab options for single - * mount. Common mount_one call for single mounts and 'all'. Fixed - * mtab updating and stale entries. Removed 'remount' default. - *
60 lines
1.8 KiB
C
60 lines
1.8 KiB
C
/*
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* eject implementation for busybox
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*
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* Copyright (C) 2004 Peter Willis <psyphreak@phreaker.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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/*
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* This is a simple hack of eject based on something Erik posted in #uclibc.
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* Most of the dirty work blatantly ripped off from cat.c =)
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*/
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <unistd.h>
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#include <sys/mount.h>
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#include <mntent.h>
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#include "busybox.h"
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/* various defines swiped from linux/cdrom.h */
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#define CDROMCLOSETRAY 0x5319 /* pendant of CDROMEJECT */
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#define CDROMEJECT 0x5309 /* Ejects the cdrom media */
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#define DEFAULT_CDROM "/dev/cdrom"
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extern int eject_main(int argc, char **argv)
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{
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unsigned long flags;
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char *device;
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struct mntent *m;
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flags = bb_getopt_ulflags(argc, argv, "t");
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device=argv[optind] ? : DEFAULT_CDROM;
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if((m = find_mount_point(device, bb_path_mtab_file))) {
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if(umount(m->mnt_dir))
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bb_error_msg_and_die("Can't umount");
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else if(ENABLE_FEATURE_MTAB_SUPPORT) erase_mtab(m->mnt_fsname);
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}
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if (ioctl(bb_xopen( device, (O_RDONLY | O_NONBLOCK)),
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( flags ? CDROMCLOSETRAY : CDROMEJECT)))
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{
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bb_perror_msg_and_die(device);
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}
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return(EXIT_SUCCESS);
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}
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