printf(_("%s: %s mounted on %s.\n"), pr, src, tgt);
}
-/*
- * Handles generic errors like ENOMEM, ...
- *
- * rc = 0 success
- * <0 error (usually -errno)
- *
- * Returns exit status (MOUNT_EX_*) and prints error message.
- */
-static int handle_generic_errors(int rc, const char *msg, ...)
-{
- va_list va;
-
- va_start(va, msg);
- errno = -rc;
-
- switch(errno) {
- case EINVAL:
- case EPERM:
- vwarn(msg, va);
- rc = MOUNT_EX_USAGE;
- break;
- case ENOMEM:
- vwarn(msg, va);
- rc = MOUNT_EX_SYSERR;
- break;
- default:
- vwarn(msg, va);
- rc = MOUNT_EX_FAIL;
- break;
- }
- va_end(va);
- return rc;
-}
-
#if defined(HAVE_LIBSELINUX) && defined(HAVE_SECURITY_GET_INITIAL_CONTEXT)
#include <selinux/selinux.h>
#include <selinux/context.h>
#endif
/*
- * Returns 1 if @dir parent is shared
- */
-static int is_shared_tree(struct libmnt_context *cxt, const char *dir)
-{
- struct libmnt_table *tb = NULL;
- struct libmnt_fs *fs;
- unsigned long mflags = 0;
- char *mnt = NULL, *p;
- int rc = 0;
-
- if (!dir)
- return 0;
- if (mnt_context_get_mtab(cxt, &tb) || !tb)
- goto done;
- mnt = xstrdup(dir);
- p = strrchr(mnt, '/');
- if (!p)
- goto done;
- if (p > mnt)
- *p = '\0';
- fs = mnt_table_find_mountpoint(tb, mnt, MNT_ITER_BACKWARD);
-
- rc = fs && mnt_fs_is_kernel(fs)
- && mnt_fs_get_propagation(fs, &mflags) == 0
- && (mflags & MS_SHARED);
-done:
- free(mnt);
- return rc;
-}
-
-/*
- * rc = 0 success
- * <0 error (usually -errno or -1)
- *
- * Returns exit status (MOUNT_EX_*) and/or prints error message.
+ * Returns exit status (MNT_EX_*) and/or prints error message.
*/
static int mk_exit_code(struct libmnt_context *cxt, int rc)
{
- int syserr;
- struct stat st;
- unsigned long uflags = 0, mflags = 0;
+ const char *tgt;
+ char buf[BUFSIZ] = { 0 };
- int restricted = mnt_context_is_restricted(cxt);
- const char *tgt = mnt_context_get_target(cxt);
- const char *src = mnt_context_get_source(cxt);
+ rc = mnt_context_get_excode(cxt, rc, buf, sizeof(buf));
+ tgt = mnt_context_get_target(cxt);
- if (mnt_context_helper_executed(cxt)) {
- /*
- * /sbin/mount.<type> called, return status
- */
- if (rc == -MNT_ERR_APPLYFLAGS)
- warnx(_("WARNING: failed to apply propagation flags"));
- return mnt_context_get_helper_status(cxt);
+ if (*buf) {
+ const char *spec = tgt;
+ if (!spec)
+ spec = mnt_context_get_source(cxt);
+ if (!spec)
+ spec = "???";
+ warnx(_("%s: %s."), spec, buf);
}
- if (rc == 0 && mnt_context_get_status(cxt) == 1) {
- /*
- * Libmount success && syscall success.
- */
- selinux_warning(cxt, tgt);
+ if (rc == MNT_EX_SUCCESS) {
+ if (mnt_context_get_status(cxt) == 1)
+ selinux_warning(cxt, tgt);
if (mnt_context_forced_rdonly(cxt))
- warnx(_("WARNING: device write-protected, mounted read-only"));
-
- return MOUNT_EX_SUCCESS; /* mount(2) success */
- }
-
- mnt_context_get_mflags(cxt, &mflags); /* mount(2) flags */
- mnt_context_get_user_mflags(cxt, &uflags); /* userspace flags */
-
- if (!mnt_context_syscall_called(cxt)) {
- /*
- * libmount errors (extra library checks)
- */
- switch (rc) {
- case -EPERM:
- warnx(_("only root can mount %s on %s"), src, tgt);
- return MOUNT_EX_USAGE;
- case -EBUSY:
- warnx(_("%s is already mounted"), src);
- return MOUNT_EX_USAGE;
- /* -EROFS before syscall can happen only for loop mount */
- case -EROFS:
- if (mflags & MS_RDONLY)
- warnx(_("cannot mount %s read-only"), src);
- else if (mnt_context_is_rwonly_mount(cxt))
- warnx(_("%s is write-protected but explicit `-w' flag given"), src);
- else if (mflags & MS_REMOUNT)
- warnx(_("cannot remount %s read-write, is write-protected"), src);
- warnx(_("mount %s on %s failed"), src, tgt);
- return MOUNT_EX_USAGE;
- case -MNT_ERR_NOFSTAB:
- if (mnt_context_is_swapmatch(cxt)) {
- warnx(_("can't find %s in %s"),
- src ? src : tgt,
- mnt_get_fstab_path());
- return MOUNT_EX_USAGE;
- }
- /* source/target explicitly defined */
- if (tgt)
- warnx(_("can't find mountpoint %s in %s"),
- tgt, mnt_get_fstab_path());
- else
- warnx(_("can't find mount source %s in %s"),
- src, mnt_get_fstab_path());
- return MOUNT_EX_USAGE;
- case -MNT_ERR_AMBIFS:
- warnx(_("%s: more filesystems detected. This should not happen,\n"
- " use -t <type> to explicitly specify the filesystem type or\n"
- " use wipefs(8) to clean up the device."), src);
- return MOUNT_EX_USAGE;
- case -MNT_ERR_NOFSTYPE:
- if (restricted)
- warnx(_("I could not determine the filesystem type, "
- "and none was specified"));
- else
- warnx(_("you must specify the filesystem type"));
- return MOUNT_EX_USAGE;
- case -MNT_ERR_NOSOURCE:
- if (uflags & MNT_MS_NOFAIL)
- return MOUNT_EX_SUCCESS;
- if (src)
- warnx(_("can't find %s"), src);
- else
- warnx(_("mount source not defined"));
- return MOUNT_EX_USAGE;
- case -MNT_ERR_MOUNTOPT:
- if (errno)
- warn(_("failed to parse mount options"));
- else
- warnx(_("failed to parse mount options"));
- return MOUNT_EX_USAGE;
- case -MNT_ERR_LOOPDEV:
- warn(_("%s: failed to setup loop device"), src);
- return MOUNT_EX_FAIL;
- case -MNT_ERR_LOOPOVERLAP:
- warnx(_("%s: overlapping loop device exists"), src);
- return MOUNT_EX_FAIL;
- default:
- return handle_generic_errors(rc, _("%s: mount failed"),
- tgt ? tgt : src);
- }
- } else if (mnt_context_get_syscall_errno(cxt) == 0) {
- /*
- * mount(2) syscall success, but something else failed
- * (probably error in mtab processing).
- */
- if (rc < 0)
- return handle_generic_errors(rc,
- _("%s: filesystem mounted, but mount(8) failed"),
- tgt ? tgt : src);
-
- return MOUNT_EX_SOFTWARE; /* internal error */
-
+ warnx(_("%s: WARNING: device write-protected, mounted read-only."), tgt);
}
-
- /*
- * mount(2) errors
- */
- syserr = mnt_context_get_syscall_errno(cxt);
-
- switch(syserr) {
- case EPERM:
- if (geteuid() == 0) {
- if (stat(tgt, &st) || !S_ISDIR(st.st_mode))
- warnx(_("mount point %s is not a directory"), tgt);
- else
- warnx(_("permission denied"));
- } else
- warnx(_("must be superuser to use mount"));
- break;
-
- case EBUSY:
- {
- struct libmnt_table *tb;
-
- if (mflags & MS_REMOUNT) {
- warnx(_("%s is busy"), tgt);
- break;
- }
-
- warnx(_("%s is already mounted or %s busy"), src, tgt);
-
- if (src && mnt_context_get_mtab(cxt, &tb) == 0) {
- struct libmnt_iter *itr = mnt_new_iter(MNT_ITER_FORWARD);
- struct libmnt_fs *fs;
-
- while(mnt_table_next_fs(tb, itr, &fs) == 0) {
- const char *s = mnt_fs_get_srcpath(fs),
- *t = mnt_fs_get_target(fs);
-
- if (t && s && mnt_fs_streq_srcpath(fs, src))
- fprintf(stderr, _(
- " %s is already mounted on %s\n"), s, t);
- }
- mnt_free_iter(itr);
- }
- break;
- }
- case ENOENT:
- if (tgt && lstat(tgt, &st))
- warnx(_("mount point %s does not exist"), tgt);
- else if (tgt && stat(tgt, &st))
- warnx(_("mount point %s is a symbolic link to nowhere"), tgt);
- else if (src && stat(src, &st)) {
- if (uflags & MNT_MS_NOFAIL)
- return MOUNT_EX_SUCCESS;
-
- warnx(_("special device %s does not exist"), src);
- } else {
- errno = syserr;
- if (tgt)
- warn("%s: %s", _("mount(2) failed"), tgt);
- else if (src)
- warn("%s: %s", _("mount(2) failed"), src);
- else
- warn(_("mount(2) failed"));
- }
- break;
-
- case ENOTDIR:
- if (stat(tgt, &st) || ! S_ISDIR(st.st_mode))
- warnx(_("mount point %s is not a directory"), tgt);
- else if (src && stat(src, &st) && errno == ENOTDIR) {
- if (uflags & MNT_MS_NOFAIL)
- return MOUNT_EX_SUCCESS;
-
- warnx(_("special device %s does not exist "
- "(a path prefix is not a directory)"), src);
- } else {
- errno = syserr;
- warn("%s: %s", _("mount(2) failed"), tgt);
- }
- break;
-
- case EINVAL:
- if (mflags & MS_REMOUNT)
- warnx(_("%s not mounted or bad option"), tgt);
- else if (rc == -MNT_ERR_APPLYFLAGS)
- warnx(_("%s is not mountpoint or bad option"), tgt);
- else if ((mflags & MS_MOVE) && is_shared_tree(cxt, src))
- warnx(_("bad option. Note that moving a mount residing under a shared\n"
- " mount is unsupported."));
- else
- warnx(_("wrong fs type, bad option, bad superblock on %s,\n"
- " missing codepage or helper program, or other error"),
- src);
-
- if (mnt_fs_is_netfs(mnt_context_get_fs(cxt)))
- fprintf(stderr, _(
- " (for several filesystems (e.g. nfs, cifs) you might\n"
- " need a /sbin/mount.<type> helper program)\n"));
-
- fprintf(stderr, _("\n"
- " In some cases useful info is found in syslog - try\n"
- " dmesg | tail or so.\n"));
- break;
-
- case EMFILE:
- warnx(_("mount table full"));
- break;
-
- case EIO:
- warnx(_("%s: can't read superblock"), src);
- break;
-
- case ENODEV:
- if (mnt_context_get_fstype(cxt))
- warnx(_("unknown filesystem type '%s'"), mnt_context_get_fstype(cxt));
- else
- warnx(_("unknown filesystem type"));
- break;
-
- case ENOTBLK:
- if (uflags & MNT_MS_NOFAIL)
- return MOUNT_EX_SUCCESS;
-
- if (stat(src, &st))
- warnx(_("%s is not a block device, and stat(2) fails?"), src);
- else if (S_ISBLK(st.st_mode))
- warnx(_("the kernel does not recognize %s as a block device\n"
- " (maybe `modprobe driver'?)"), src);
- else if (S_ISREG(st.st_mode))
- warnx(_("%s is not a block device (maybe try `-o loop'?)"), src);
- else
- warnx(_(" %s is not a block device"), src);
- break;
-
- case ENXIO:
- if (uflags & MNT_MS_NOFAIL)
- return MOUNT_EX_SUCCESS;
-
- warnx(_("%s is not a valid block device"), src);
- break;
-
- case EACCES:
- case EROFS:
- if (mflags & MS_RDONLY)
- warnx(_("cannot mount %s read-only"), src);
- else if (mnt_context_is_rwonly_mount(cxt))
- warnx(_("%s is write-protected but explicit `-w' flag given"), src);
- else if (mflags & MS_REMOUNT)
- warnx(_("cannot remount %s read-write, is write-protected"), src);
- warnx(_("mount %s on %s failed"), src, tgt);
- break;
-
- case ENOMEDIUM:
- if (uflags & MNT_MS_NOFAIL)
- return MOUNT_EX_SUCCESS;
-
- warnx(_("no medium found on %s"), src);
- break;
-
- default:
- warn(_("mount %s on %s failed"), src, tgt);
- break;
- }
-
- return MOUNT_EX_FAIL;
+ return rc;
}
static struct libmnt_table *append_fstab(struct libmnt_context *cxt,
warnx(_("%s unmounted"), tgt);
}
-/*
- * Handles generic errors like ENOMEM, ...
- *
- * rc = 0 success
- * <0 error (usually -errno)
- *
- * Returns exit status (MOUNT_EX_*) and prints error message.
- */
-static int handle_generic_errors(int rc, const char *msg, ...)
-{
- va_list va;
-
- va_start(va, msg);
- errno = -rc;
-
- switch(errno) {
- case EINVAL:
- case EPERM:
- vwarn(msg, va);
- rc = MOUNT_EX_USAGE;
- break;
- case ENOMEM:
- vwarn(msg, va);
- rc = MOUNT_EX_SYSERR;
- break;
- default:
- vwarn(msg, va);
- rc = MOUNT_EX_FAIL;
- break;
- }
- va_end(va);
- return rc;
-}
-
static int mk_exit_code(struct libmnt_context *cxt, int rc)
{
- int syserr;
- const char *tgt = mnt_context_get_target(cxt);
-
- if (mnt_context_helper_executed(cxt))
- /*
- * /sbin/umount.<type> called, return status
- */
- return mnt_context_get_helper_status(cxt);
-
- if (rc == 0 && mnt_context_get_status(cxt) == 1)
- /*
- * Libmount success && syscall success.
- */
- return MOUNT_EX_SUCCESS;
-
-
- if (!mnt_context_syscall_called(cxt)) {
- /*
- * libmount errors (extra library checks)
- */
- if (rc == -EPERM && !mnt_context_tab_applied(cxt)) {
- /* failed to evaluate permissions because not found
- * relevant entry in mtab */
- warnx(_("%s: not mounted"), tgt);
- return MOUNT_EX_USAGE;
- }
- return handle_generic_errors(rc, _("%s: umount failed"), tgt);
-
- } else if (mnt_context_get_syscall_errno(cxt) == 0) {
- /*
- * umount(2) syscall success, but something else failed
- * (probably error in mtab processing).
- */
- if (rc < 0)
- return handle_generic_errors(rc,
- _("%s: filesystem was unmounted, but umount(8) failed"),
- tgt);
-
- return MOUNT_EX_SOFTWARE; /* internal error */
-
+ char buf[BUFSIZ] = { 0 };
+
+ rc = mnt_context_get_excode(cxt, rc, buf, sizeof(buf));
+ if (*buf) {
+ const char *spec = mnt_context_get_target(cxt);
+ if (!spec)
+ spec = mnt_context_get_source(cxt);
+ if (!spec)
+ spec = "???";
+ warnx(_("%s: %s."), spec, buf);
}
-
- /*
- * umount(2) errors
- */
- syserr = mnt_context_get_syscall_errno(cxt);
-
- switch(syserr) {
- case ENXIO:
- warnx(_("%s: invalid block device"), tgt); /* ??? */
- break;
- case EINVAL:
- warnx(_("%s: not mounted"), tgt);
- break;
- case EIO:
- warnx(_("%s: can't write superblock"), tgt);
- break;
- case EBUSY:
- warnx(_("%s: target is busy\n"
- " (In some cases useful info about processes that\n"
- " use the device is found by lsof(8) or fuser(1).)"),
- tgt);
- break;
- case ENOENT:
- if (tgt && *tgt)
- warnx(_("%s: mountpoint not found"), tgt);
- else
- warnx(_("undefined mountpoint"));
- break;
- case EPERM:
- warnx(_("%s: must be superuser to unmount"), tgt);
- break;
- case EACCES:
- warnx(_("%s: block devices are not permitted on filesystem"), tgt);
- break;
- default:
- errno = syserr;
- warn("%s", tgt);
- break;
- }
- return MOUNT_EX_FAIL;
+ return rc;
}
static int umount_all(struct libmnt_context *cxt)
projects / thirdparty / util-linux.git / commitdiff
