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Fix IMSM handling on Fedora.

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* util/getroot.c (grub_util_is_imsm): New function.
	(grub_util_get_dev_abstraction): Treat IMSM as simple device, not RAID.
This commit is contained in:
Vladimir 'phcoder' Serbinenko 2012-03-10 18:01:01 +01:00
parent 0f021838c4
commit ec31677170
2 changed files with 95 additions and 1 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2012-03-10 Vladimir Serbinenko <phcoder@gmail.com>
Fix IMSM handling on Fedora.
* util/getroot.c (grub_util_is_imsm): New function.
(grub_util_get_dev_abstraction): Treat IMSM as simple device, not RAID.
2012-03-10 Vladimir Serbinenko <phcoder@gmail.com>
* Makefile.am: Strip gold section.

89
util/getroot.c
View file

@ -172,6 +172,11 @@ struct btrfs_ioctl_fs_info_args
struct btrfs_ioctl_fs_info_args)
#endif
#ifdef __linux__
static int
grub_util_is_imsm (const char *os_dev);
#endif
#if ! defined(__CYGWIN__)
static void
@ -1224,7 +1229,8 @@ grub_util_get_dev_abstraction (const char *os_dev)
return ret;
/* Check for RAID. */
if (!strncmp (os_dev, "/dev/md", 7) && ! grub_util_device_is_mapped (os_dev))
if (!strncmp (os_dev, "/dev/md", 7) && ! grub_util_device_is_mapped (os_dev)
&& !grub_util_is_imsm (os_dev))
return GRUB_DEV_ABSTRACTION_RAID;
#endif
@ -1303,6 +1309,87 @@ out:
return name;
}
static int
grub_util_is_imsm (const char *os_dev)
{
int try;
const char *dev = os_dev;
for (try = 0; try < 2; try++)
{
char *argv[5];
int fd;
pid_t pid;
FILE *mdadm;
char *buf = NULL;
size_t len = 0;
/* execvp has inconvenient types, hence the casts. None of these
strings will actually be modified. */
argv[0] = (char *) "mdadm";
argv[1] = (char *) "--detail";
argv[2] = (char *) "--export";
argv[3] = (char *) dev;
argv[4] = NULL;
pid = exec_pipe (argv, &fd);
if (!pid)
{
if (dev != os_dev)
free ((void *) dev);
return 0;
}
/* Parent. Read mdadm's output. */
mdadm = fdopen (fd, "r");
if (! mdadm)
{
grub_util_warn (_("Unable to open stream from %s: %s"),
"mdadm", strerror (errno));
close (fd);
waitpid (pid, NULL, 0);
if (dev != os_dev)
free ((void *) dev);
return 0;
}
while (getline (&buf, &len, mdadm) > 0)
{
if (strncmp (buf, "MD_CONTAINER=", sizeof ("MD_CONTAINER=") - 1) == 0)
{
char *newdev, *ptr;
newdev = xstrdup (buf + sizeof ("MD_CONTAINER=") - 1);
ptr = newdev + strlen (newdev) - 1;
for (; ptr >= newdev && (*ptr == '\n' || *ptr == '\r'); ptr--);
ptr[1] = 0;
grub_util_info ("Container of %s is %s", dev, newdev);
dev = newdev;
goto out;
}
if (strncmp (buf, "MD_METADATA=imsm",
sizeof ("MD_METADATA=imsm") - 1) == 0)
{
close (fd);
waitpid (pid, NULL, 0);
grub_util_info ("%s is imsm", dev);
if (dev != os_dev)
free ((void *) dev);
return 1;
}
}
return 0;
out:
close (fd);
waitpid (pid, NULL, 0);
}
if (dev != os_dev)
free ((void *) dev);
return 0;
}
#endif /* __linux__ */
void