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grub-probe: Don't skip /dev/mapper/dm-* devices

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This patch ensures that grub-probe will find the root device placed in
/dev/mapper/dm-[0-9]+-.* e.g. device named /dev/mapper/dm-0-luks will be
found and grub.cfg will be updated properly, enabling the system to boot.

Signed-off-by: Oleg Solovyov <mcpain@altlinux.org>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
This commit is contained in:
Oleg Solovyov authored and Daniel Kiper committed 2018-05-29 15:55:27 +02:00
1 parent b66e364f13
commit 6d28b3bd26
1 file changed
+5 -2
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grub-core/osdep/unix/getroot.c
+5 -2
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@@ -428,8 +428,11 @@ grub_find_device (const char *dir, dev_t dev)
{ {
#ifdef __linux__ #ifdef __linux__
/* Skip device names like /dev/dm-0, which are short-hand aliases /* Skip device names like /dev/dm-0, which are short-hand aliases
to more descriptive device names, e.g. those under /dev/mapper */ to more descriptive device names, e.g. those under /dev/mapper.
if (ent->d_name[0] == 'd' && Also, don't skip devices which names start with dm-[0-9] in
directories below /dev, e.g. /dev/mapper/dm-0-luks. */
if (strcmp (dir, "/dev") == 0 &&
ent->d_name[0] == 'd' &&
ent->d_name[1] == 'm' && ent->d_name[1] == 'm' &&
ent->d_name[2] == '-' && ent->d_name[2] == '-' &&
ent->d_name[3] >= '0' && ent->d_name[3] >= '0' &&