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eject: remove unmounting. It is buggy for many non-trivial

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mounts, and can be done as shell script.
This commit is contained in:
Denis Vlasenko 2006-10-07 15:00:29 +00:00
parent 96e9d3c968
commit f7a57848c2
1 changed files with 8 additions and 12 deletions
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20
miscutils/eject.c
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@ -14,7 +14,6 @@
*/
#include "busybox.h"
#include <mntent.h>
/* various defines swiped from linux/cdrom.h */
#define CDROMCLOSETRAY 0x5319 /* pendant of CDROMEJECT */
@ -30,23 +29,20 @@ int eject_main(int argc, char **argv)
{
unsigned long flags;
char *device;
struct mntent *m;
int dev, cmd;
opt_complementary = "?:?1:t--T:T--t";
flags = getopt32(argc, argv, "tT");
device = argv[optind] ? : "/dev/cdrom";
// FIXME: what if something is mounted OVER our cdrom?
// We will unmount something else??!
// What if cdrom is mounted many times?
m = find_mount_point(device, bb_path_mtab_file);
if (m) {
if (umount(m->mnt_dir))
bb_error_msg_and_die("can't umount %s", device);
if (ENABLE_FEATURE_MTAB_SUPPORT)
erase_mtab(m->mnt_fsname);
}
// We used to do "umount <device>" here, but it was buggy
// if something was mounted OVER cdrom and
// if cdrom is mounted many times.
//
// This works equally well (or better):
// #!/bin/sh
// umount /dev/cdrom
// eject
dev = xopen(device, O_RDONLY|O_NONBLOCK);
cmd = CDROMEJECT;