* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
* Copyright (C) 2005 by Rob Landley <rob@landley.net>
*
- * Licensed under GPL version 2, see file LICENSE in this tarball for details.
+ * Licensed under GPLv2, see file LICENSE in this source tree.
*/
-
#include <mntent.h>
+#include <sys/mount.h>
+/* Make sure we have all the new mount flags we actually try to use. */
+#ifndef MS_BIND
+# define MS_BIND (1 << 12)
+#endif
+#ifndef MS_MOVE
+# define MS_MOVE (1 << 13)
+#endif
+#ifndef MS_RECURSIVE
+# define MS_RECURSIVE (1 << 14)
+#endif
+#ifndef MS_SILENT
+# define MS_SILENT (1 << 15)
+#endif
+/* The shared subtree stuff, which went in around 2.6.15. */
+#ifndef MS_UNBINDABLE
+# define MS_UNBINDABLE (1 << 17)
+#endif
+#ifndef MS_PRIVATE
+# define MS_PRIVATE (1 << 18)
+#endif
+#ifndef MS_SLAVE
+# define MS_SLAVE (1 << 19)
+#endif
+#ifndef MS_SHARED
+# define MS_SHARED (1 << 20)
+#endif
+#ifndef MS_RELATIME
+# define MS_RELATIME (1 << 21)
+#endif
#include "libbb.h"
+#ifndef PATH_MAX
+# define PATH_MAX (4*1024)
+#endif
+
#if defined(__dietlibc__)
/* 16.12.2006, Sampo Kellomaki (sampo@iki.fi)
int umount_main(int argc UNUSED_PARAM, char **argv)
{
int doForce;
- char *const path = xmalloc(PATH_MAX + 2); /* to save stack */
+ char *const buf = xmalloc(PATH_MAX * 2 + 128); /* to save stack */
struct mntent me;
FILE *fp;
char *fstype = NULL;
if (opt & OPT_ALL)
bb_error_msg_and_die("can't open '%s'", bb_path_mtab_file);
} else {
- while (getmntent_r(fp, &me, path, PATH_MAX)) {
+ while (getmntent_r(fp, &me, buf, PATH_MAX * 2 + 128)) {
/* Match fstype if passed */
- if (fstype && match_fstype(&me, fstype))
+ if (!match_fstype(&me, fstype))
continue;
- m = xmalloc(sizeof(struct mtab_list));
+ m = xzalloc(sizeof(*m));
m->next = mtl;
m->device = xstrdup(me.mnt_fsname);
m->dir = xstrdup(me.mnt_dir);
for (;;) {
int curstat;
char *zapit = *argv;
+ char *path;
// Do we already know what to umount this time through the loop?
if (m)
- safe_strncpy(path, m->dir, PATH_MAX);
+ path = xstrdup(m->dir);
// For umount -a, end of mtab means time to exit.
else if (opt & OPT_ALL)
break;
if (!zapit)
break;
argv++;
- realpath(zapit, path);
- for (m = mtl; m; m = m->next)
- if (!strcmp(path, m->dir) || !strcmp(path, m->device))
- break;
+ path = xmalloc_realpath(zapit);
+ if (path) {
+ for (m = mtl; m; m = m->next)
+ if (strcmp(path, m->dir) == 0 || strcmp(path, m->device) == 0)
+ break;
+ }
}
// If we couldn't find this sucker in /etc/mtab, punt by passing our
// command line argument straight to the umount syscall. Otherwise,
// Find next matching mtab entry for -a or umount /dev
// Note this means that "umount /dev/blah" will unmount all instances
// of /dev/blah, not just the most recent.
- if (m) while ((m = m->next) != NULL)
- if ((opt & OPT_ALL) || !strcmp(path, m->device))
- break;
+ if (m) {
+ while ((m = m->next) != NULL)
+ // NB: if m is non-NULL, path is non-NULL as well
+ if ((opt & OPT_ALL) || strcmp(path, m->device) == 0)
+ break;
+ }
+ free(path);
}
// Free mtab list if necessary
free(mtl);
mtl = m;
}
- free(path);
+ free(buf);
}
return status;