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* kern/emu/misc.c (device_mapper_null_log): New function.

Browse source 
(grub_device_mapper_supported): New function.
* include/grub/emu/misc.h (grub_device_mapper_supported): Add
prototype.
* kern/emu/hostdisk.c (find_partition_start): Check whether
device-mapper is supported before trying to use it.
* util/deviceiter.c (grub_util_iterate_devices): Likewise.
This commit is contained in:
Colin Watson 2010-06-07 22:41:55 +01:00
parent da90820083
commit e0f4c43882
5 changed files with 152 additions and 97 deletions
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10
ChangeLog
View file

@ -1,3 +1,13 @@
2010-06-07 Colin Watson <cjwatson@ubuntu.com>
* kern/emu/misc.c (device_mapper_null_log): New function.
(grub_device_mapper_supported): New function.
* include/grub/emu/misc.h (grub_device_mapper_supported): Add
prototype.
* kern/emu/hostdisk.c (find_partition_start): Check whether
device-mapper is supported before trying to use it.
* util/deviceiter.c (grub_util_iterate_devices): Likewise.
2010-06-07 Colin Watson <cjwatson@ubuntu.com>
* docs/grub.texi (Naming convention): Use GRUB 2 syntax.

4
include/grub/emu/misc.h
View file

@ -48,4 +48,8 @@ int EXPORT_FUNC(asprintf) (char **buf, const char *fmt, ...);
char * EXPORT_FUNC(xasprintf) (const char *fmt, ...);
extern char * canonicalize_file_name (const char *path);
#ifdef HAVE_DEVICE_MAPPER
int grub_device_mapper_supported (void);
#endif
#endif /* GRUB_EMU_MISC_H */

2
kern/emu/hostdisk.c
View file

@ -342,7 +342,7 @@ find_partition_start (const char *dev)
# endif /* !defined(__NetBSD__) */
# ifdef HAVE_DEVICE_MAPPER
if (device_is_mapped (dev)) {
if (grub_device_mapper_supported () && device_is_mapped (dev)) {
struct dm_task *task = NULL;
grub_uint64_t start, length;
char *target_type, *params, *space;

39
kern/emu/misc.c
View file

@ -22,6 +22,10 @@
#include <grub/time.h>
#include <grub/emu/misc.h>
#ifdef HAVE_DEVICE_MAPPER
# include <libdevmapper.h>
#endif
int verbosity;
void
@ -311,3 +315,38 @@ grub_make_system_path_relative_to_its_root (const char *path)
return buf3;
}
#ifdef HAVE_DEVICE_MAPPER
static void device_mapper_null_log (int level __attribute__ ((unused)),
const char *file __attribute__ ((unused)),
int line __attribute__ ((unused)),
int dm_errno __attribute__ ((unused)),
const char *f __attribute__ ((unused)),
...)
{
}
int
grub_device_mapper_supported (void)
{
static int supported = -1;
if (supported == -1)
{
struct dm_task *dmt;
/* Suppress annoying log messages. */
dm_log_with_errno_init (&device_mapper_null_log);
dmt = dm_task_create (DM_DEVICE_VERSION);
supported = (dmt != NULL);
if (dmt)
dm_task_destroy (dmt);
/* Restore the original logger. */
dm_log_with_errno_init (NULL);
}
return supported;
}
#endif /* HAVE_DEVICE_MAPPER */

2
util/deviceiter.c
View file

@ -33,6 +33,7 @@
#include <grub/util/deviceiter.h>
#include <grub/list.h>
#include <grub/misc.h>
#include <grub/emu/misc.h>
#ifdef __linux__
# if !defined(__GLIBC__) || \
@ -676,6 +677,7 @@ grub_util_iterate_devices (int NESTED_FUNC_ATTR (*hook) (const char *, int),
}
/* DM-RAID. */
if (grub_device_mapper_supported ())
{
struct dm_tree *tree = NULL;
struct dm_task *task = NULL;