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* disk/lvm.c (grub_lvm_scan_device): Skip snapshots.

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2010-07-01  Vladimir Serbinenko  <phcoder@gmail.com>

	* disk/lvm.c (grub_lvm_checkvalue): New function.
	(grub_lvm_check_flag): Likewise.

	Also-By: Vladimir Serbinenko <phcoder@gmail.com>
This commit is contained in:
Sean Finney 2010-07-01 23:19:11 +02:00 committed by Vladimir 'phcoder' Serbinenko
parent b79889ba76
commit 5944958c61
2 changed files with 78 additions and 0 deletions
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9
ChangeLog
View file

@ -1,3 +1,12 @@
2010-07-01 Sean Finney <seanius@seanius.net>
* disk/lvm.c (grub_lvm_scan_device): Skip snapshots.
2010-07-01 Vladimir Serbinenko <phcoder@gmail.com>
* disk/lvm.c (grub_lvm_checkvalue): New function.
(grub_lvm_check_flag): Likewise.
2010-07-01 Robert Millan <rmh@gnu.org>
* kern/emu/hostdisk.c (convert_system_partition_to_system_disk):

69
disk/lvm.c
View file

@ -45,6 +45,52 @@ grub_lvm_getvalue (char **p, char *str)
return grub_strtoul (*p, NULL, 10);
}
static int
grub_lvm_checkvalue (char **p, char *str, char *tmpl)
{
int tmpllen = grub_strlen (tmpl);
*p = grub_strstr (*p, str);
if (! *p)
return 0;
*p += grub_strlen (str);
if (**p != '"')
return 0;
return (grub_memcmp (*p + 1, tmpl, tmpllen) == 0 && (*p)[tmpllen + 1] == '"');
}
static int
grub_lvm_check_flag (char *p, char *str, char *flag)
{
int len_str = grub_strlen (str), len_flag = grub_strlen (flag);
while (1)
{
char *q;
p = grub_strstr (p, str);
if (! p)
return 0;
p += len_str;
if (grub_memcmp (p, " = [", sizeof (" = [") - 1) != 0)
continue;
q = p + sizeof (" = [") - 1;
while (1)
{
while (grub_isspace (*q))
q++;
if (*q != '"')
return 0;
q++;
if (grub_memcmp (q, flag, len_flag) == 0 && q[len_flag] == '"')
return 1;
while (*q != '"')
q++;
q++;
if (*q == ']')
return 0;
q++;
}
}
}
static int
grub_lvm_iterate (int (*hook) (const char *name))
{
@ -421,6 +467,7 @@ grub_lvm_scan_device (const char *name)
while (1)
{
int s;
int skip_lv = 0;
struct grub_lvm_lv *lv;
struct grub_lvm_segment *seg;
@ -445,6 +492,12 @@ grub_lvm_scan_device (const char *name)
lv->size = 0;
if (!grub_lvm_check_flag (p, "status", "VISIBLE"))
{
skip_lv = 1;
goto lv_parsed;
}
lv->segment_count = grub_lvm_getvalue (&p, "segment_count = ");
if (p == NULL)
goto lvs_fail;
@ -465,6 +518,14 @@ grub_lvm_scan_device (const char *name)
seg->extent_count = grub_lvm_getvalue (&p, "extent_count = ");
if (p == NULL)
goto lvs_segment_fail;
if (grub_lvm_checkvalue (&p, "type = ", "snapshot"))
{
/* Found a snapshot, give up and move on. */
skip_lv = 1;
break;
}
seg->stripe_count = grub_lvm_getvalue (&p, "stripe_count = ");
if (p == NULL)
goto lvs_segment_fail;
@ -531,12 +592,20 @@ grub_lvm_scan_device (const char *name)
goto fail4;
}
lv_parsed:
if (p != NULL)
p = grub_strchr (p, '}');
if (p == NULL)
goto lvs_fail;
p += 3;
if (skip_lv)
{
grub_free (lv->name);
grub_free (lv);
continue;
}
lv->number = lv_count++;
lv->vg = vg;
lv->next = vg->lvs;