50 lines
1.5 KiB
Diff
50 lines
1.5 KiB
Diff
--- util-linux-2.13-pre6/mount/umount.8.uhelper 2006-09-15 09:44:43.000000000 +0200
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+++ util-linux-2.13-pre6/mount/umount.8 2006-09-15 10:07:11.000000000 +0200
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@@ -122,6 +122,19 @@
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Any pending loop devices can be freed using `losetup -d', see
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.BR losetup (8).
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+.SH NOTES
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+The syntax of external umount helpers is:
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+
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+.br
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+.BI "/sbin/umount.<suffix> [\-nlfvr] " "dir " | " device "
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+.br
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+
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+where the <suffix> is filesystem type or a value from "uhelper=" mtab option.
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+
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+The uhelper (unprivileged umount request helper) is possible used when non-root
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+user wants to umount device which has been mounted by an external process (e.g.
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+HAL) and there is not entry in fstab for this mountpoint.
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+
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.SH FILES
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.I /etc/mtab
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table of mounted file systems
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--- util-linux-2.13-pre6/mount/umount.c.uhelper 2006-09-15 09:11:38.000000000 +0200
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+++ util-linux-2.13-pre6/mount/umount.c 2006-09-15 09:44:10.000000000 +0200
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@@ -565,11 +565,24 @@
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if (suid) {
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char *mtab_user = NULL;
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+ char *uhelper = NULL;
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if (!mc)
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die(2,
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_("umount: %s is not mounted (according to mtab)"),
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file);
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+ /*
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+ * uhelper - unprivileged umount helper
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+ * -- external umount (for example HAL mounts)
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+ */
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+ if (mc->m.mnt_opts)
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+ uhelper = get_value(mc->m.mnt_opts, "uhelper=");
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+ if (uhelper) {
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+ int status = 0;
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+ if (check_special_umountprog(arg, arg, uhelper, &status))
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+ return status;
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+ }
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+
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/* The 2.4 kernel will generally refuse to mount the same
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filesystem on the same mount point, but will accept NFS.
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So, unmounting must be possible. */
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