+++ /dev/null
-/* deviceiter.c - iterate over system devices */
-/*
- * GRUB -- GRand Unified Bootloader
- * Copyright (C) 1999,2000,2001,2002,2003,2004,2005,2007,2008,2011 Free Software Foundation, Inc.
- *
- * GRUB is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * GRUB is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <config.h>
-
-#include <stdio.h>
-#include <unistd.h>
-#include <string.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <limits.h>
-#include <dirent.h>
-
-#include <grub/util/misc.h>
-#include <grub/util/deviceiter.h>
-#include <grub/list.h>
-#include <grub/misc.h>
-#include <grub/emu/misc.h>
-
-#ifdef __linux__
-# if !defined(__GLIBC__) || \
- ((__GLIBC__ < 2) || ((__GLIBC__ == 2) && (__GLIBC_MINOR__ < 1)))
-/* Maybe libc doesn't have large file support. */
-# include <linux/unistd.h> /* _llseek */
-# endif /* (GLIBC < 2) || ((__GLIBC__ == 2) && (__GLIBC_MINOR < 1)) */
-# include <sys/ioctl.h> /* ioctl */
-# ifndef HDIO_GETGEO
-# define HDIO_GETGEO 0x0301 /* get device geometry */
-/* If HDIO_GETGEO is not defined, it is unlikely that hd_geometry is
- defined. */
-struct hd_geometry
-{
- unsigned char heads;
- unsigned char sectors;
- unsigned short cylinders;
- unsigned long start;
-};
-# endif /* ! HDIO_GETGEO */
-# ifndef FLOPPY_MAJOR
-# define FLOPPY_MAJOR 2 /* the major number for floppy */
-# endif /* ! FLOPPY_MAJOR */
-# ifndef MAJOR
-# define MAJOR(dev) \
- ({ \
- unsigned long long __dev = (dev); \
- (unsigned) ((__dev >> 8) & 0xfff) \
- | ((unsigned int) (__dev >> 32) & ~0xfff); \
- })
-# endif /* ! MAJOR */
-# ifndef MINOR
-# define MINOR(dev) \
- ({ \
- unsigned long long __dev = (dev); \
- (unsigned) (__dev & 0xff) | ((unsigned int) (__dev >> 12) & ~0xff); \
- })
-# endif /* ! MINOR */
-# ifndef CDROM_GET_CAPABILITY
-# define CDROM_GET_CAPABILITY 0x5331 /* get capabilities */
-# endif /* ! CDROM_GET_CAPABILITY */
-# ifndef BLKGETSIZE
-# define BLKGETSIZE _IO(0x12,96) /* return device size */
-# endif /* ! BLKGETSIZE */
-
-#ifdef HAVE_DEVICE_MAPPER
-# include <libdevmapper.h>
-#endif
-#endif /* __linux__ */
-
-/* Use __FreeBSD_kernel__ instead of __FreeBSD__ for compatibility with
- kFreeBSD-based non-FreeBSD systems (e.g. GNU/kFreeBSD) */
-#if defined(__FreeBSD__) && ! defined(__FreeBSD_kernel__)
-# define __FreeBSD_kernel__
-#endif
-#ifdef __FreeBSD_kernel__
- /* Obtain version of kFreeBSD headers */
-# include <osreldate.h>
-# ifndef __FreeBSD_kernel_version
-# define __FreeBSD_kernel_version __FreeBSD_version
-# endif
-
- /* Runtime detection of kernel */
-# include <sys/utsname.h>
-int
-get_kfreebsd_version (void)
-{
- struct utsname uts;
- int major;
- int minor;
- int v[2];
-
- uname (&uts);
- sscanf (uts.release, "%d.%d", &major, &minor);
-
- if (major >= 9)
- major = 9;
- if (major >= 5)
- {
- v[0] = minor/10; v[1] = minor%10;
- }
- else
- {
- v[0] = minor%10; v[1] = minor/10;
- }
- return major*100000+v[0]*10000+v[1]*1000;
-}
-#endif /* __FreeBSD_kernel__ */
-
-#if defined(__FreeBSD_kernel__) || defined(__NetBSD__) || defined(__OpenBSD__)
-# include <sys/ioctl.h> /* ioctl */
-# include <sys/disklabel.h>
-# include <sys/cdio.h> /* CDIOCCLRDEBUG */
-# if defined(__FreeBSD_kernel__)
-# include <sys/param.h>
-# if __FreeBSD_kernel_version >= 500040
-# include <sys/disk.h>
-# endif
-# endif /* __FreeBSD_kernel__ */
-#endif /* __FreeBSD_kernel__ || __NetBSD__ || __OpenBSD__ */
-
-#ifdef HAVE_OPENDISK
-# include <util.h>
-#endif /* HAVE_OPENDISK */
-
-#ifdef __linux__
-/* Check if we have devfs support. */
-static int
-have_devfs (void)
-{
- struct stat st;
- return stat ("/dev/.devfsd", &st) == 0;
-}
-#endif /* __linux__ */
-
-/* These three functions are quite different among OSes. */
-static void
-get_floppy_disk_name (char *name, int unit)
-{
-#if defined(__linux__)
- /* GNU/Linux */
- if (have_devfs ())
- sprintf (name, "/dev/floppy/%d", unit);
- else
- sprintf (name, "/dev/fd%d", unit);
-#elif defined(__GNU__)
- /* GNU/Hurd */
- sprintf (name, "/dev/fd%d", unit);
-#elif defined(__FreeBSD_kernel__)
- /* kFreeBSD */
- if (get_kfreebsd_version () >= 400000)
- sprintf (name, "/dev/fd%d", unit);
- else
- sprintf (name, "/dev/rfd%d", unit);
-#elif defined(__NetBSD__)
- /* NetBSD */
- /* opendisk() doesn't work for floppies. */
- sprintf (name, "/dev/rfd%da", unit);
-#elif defined(__OpenBSD__)
- /* OpenBSD */
- sprintf (name, "/dev/rfd%dc", unit);
-#elif defined(__QNXNTO__)
- /* QNX RTP */
- sprintf (name, "/dev/fd%d", unit);
-#elif defined(__CYGWIN__)
- /* Cygwin */
- sprintf (name, "/dev/fd%d", unit);
-#elif defined(__MINGW32__)
- (void) unit;
- *name = 0;
-#else
-# warning "BIOS floppy drives cannot be guessed in your operating system."
- /* Set NAME to a bogus string. */
- *name = 0;
-#endif
-}
-
-static void
-get_ide_disk_name (char *name, int unit)
-{
-#if defined(__linux__)
- /* GNU/Linux */
- sprintf (name, "/dev/hd%c", unit + 'a');
-#elif defined(__GNU__)
- /* GNU/Hurd */
- sprintf (name, "/dev/hd%d", unit);
-#elif defined(__FreeBSD_kernel__)
- /* kFreeBSD */
- if (get_kfreebsd_version () >= 400000)
- sprintf (name, "/dev/ad%d", unit);
- else
- sprintf (name, "/dev/rwd%d", unit);
-#elif defined(__NetBSD__) && defined(HAVE_OPENDISK)
- /* NetBSD */
- char shortname[16];
- int fd;
-
- sprintf (shortname, "wd%d", unit);
- fd = opendisk (shortname, O_RDONLY, name,
- 16, /* length of NAME */
- 0 /* char device */
- );
- close (fd);
-#elif defined(__OpenBSD__)
- /* OpenBSD */
- sprintf (name, "/dev/rwd%dc", unit);
-#elif defined(__QNXNTO__)
- /* QNX RTP */
- /* Actually, QNX RTP doesn't distinguish IDE from SCSI, so this could
- contain SCSI disks. */
- sprintf (name, "/dev/hd%d", unit);
-#elif defined(__CYGWIN__)
- /* Cygwin emulates all disks as /dev/sdX. */
- (void) unit;
- *name = 0;
-#elif defined(__MINGW32__)
- sprintf (name, "//./PHYSICALDRIVE%d", unit);
-#else
-# warning "BIOS IDE drives cannot be guessed in your operating system."
- /* Set NAME to a bogus string. */
- *name = 0;
-#endif
-}
-
-static void
-get_scsi_disk_name (char *name, int unit)
-{
-#if defined(__linux__)
- /* GNU/Linux */
- sprintf (name, "/dev/sd%c", unit + 'a');
-#elif defined(__GNU__)
- /* GNU/Hurd */
- sprintf (name, "/dev/sd%d", unit);
-#elif defined(__FreeBSD_kernel__)
- /* kFreeBSD */
- if (get_kfreebsd_version () >= 400000)
- sprintf (name, "/dev/da%d", unit);
- else
- sprintf (name, "/dev/rda%d", unit);
-#elif defined(__NetBSD__) && defined(HAVE_OPENDISK)
- /* NetBSD */
- char shortname[16];
- int fd;
-
- sprintf (shortname, "sd%d", unit);
- fd = opendisk (shortname, O_RDONLY, name,
- 16, /* length of NAME */
- 0 /* char device */
- );
- close (fd);
-#elif defined(__OpenBSD__)
- /* OpenBSD */
- sprintf (name, "/dev/rsd%dc", unit);
-#elif defined(__QNXNTO__)
- /* QNX RTP */
- /* QNX RTP doesn't distinguish SCSI from IDE, so it is better to
- disable the detection of SCSI disks here. */
- *name = 0;
-#elif defined(__CYGWIN__)
- /* Cygwin emulates all disks as /dev/sdX. */
- sprintf (name, "/dev/sd%c", unit + 'a');
-#elif defined(__MINGW32__)
- (void) unit;
- *name = 0;
-#else
-# warning "BIOS SCSI drives cannot be guessed in your operating system."
- /* Set NAME to a bogus string. */
- *name = 0;
-#endif
-}
-
-#ifdef __FreeBSD_kernel__
-static void
-get_ada_disk_name (char *name, int unit)
-{
- sprintf (name, "/dev/ada%d", unit);
-}
-
-static void
-get_ataraid_disk_name (char *name, int unit)
-{
- sprintf (name, "/dev/ar%d", unit);
-}
-
-static void
-get_mfi_disk_name (char *name, int unit)
-{
- sprintf (name, "/dev/mfid%d", unit);
-}
-#endif
-
-#ifdef __linux__
-static void
-get_virtio_disk_name (char *name, int unit)
-{
-#ifdef __sparc__
- sprintf (name, "/dev/vdisk%c", unit + 'a');
-#else
- sprintf (name, "/dev/vd%c", unit + 'a');
-#endif
-}
-
-static void
-get_dac960_disk_name (char *name, int controller, int drive)
-{
- sprintf (name, "/dev/rd/c%dd%d", controller, drive);
-}
-
-static void
-get_acceleraid_disk_name (char *name, int controller, int drive)
-{
- sprintf (name, "/dev/rs/c%dd%d", controller, drive);
-}
-
-static void
-get_ataraid_disk_name (char *name, int unit)
-{
- sprintf (name, "/dev/ataraid/d%c", unit + '0');
-}
-
-static void
-get_i2o_disk_name (char *name, char unit)
-{
- sprintf (name, "/dev/i2o/hd%c", unit);
-}
-
-static void
-get_cciss_disk_name (char *name, int controller, int drive)
-{
- sprintf (name, "/dev/cciss/c%dd%d", controller, drive);
-}
-
-static void
-get_ida_disk_name (char *name, int controller, int drive)
-{
- sprintf (name, "/dev/ida/c%dd%d", controller, drive);
-}
-
-static void
-get_mmc_disk_name (char *name, int unit)
-{
- sprintf (name, "/dev/mmcblk%d", unit);
-}
-
-static void
-get_xvd_disk_name (char *name, int unit)
-{
- sprintf (name, "/dev/xvd%c", unit + 'a');
-}
-#endif
-
-static struct seen_device
-{
- struct seen_device *next;
- struct seen_device **prev;
- const char *name;
-} *seen;
-
-/* Check if DEVICE can be read. Skip any DEVICE that we have already seen.
- If an error occurs, return zero, otherwise return non-zero. */
-static int
-check_device_readable_unique (const char *device)
-{
- char *real_device;
- char buf[512];
- FILE *fp;
- struct seen_device *seen_elt;
-
- /* If DEVICE is empty, just return error. */
- if (*device == 0)
- return 0;
-
- /* Have we seen this device already? */
- real_device = canonicalize_file_name (device);
- if (! real_device)
- return 0;
- if (grub_named_list_find (GRUB_AS_NAMED_LIST (seen), real_device))
- {
- grub_dprintf ("deviceiter", "Already seen %s (%s)\n",
- device, real_device);
- goto fail;
- }
-
- fp = fopen (device, "r");
- if (! fp)
- {
- switch (errno)
- {
-#ifdef ENOMEDIUM
- case ENOMEDIUM:
-# if 0
- /* At the moment, this finds only CDROMs, which can't be
- read anyway, so leave it out. Code should be
- reactivated if `removable disks' and CDROMs are
- supported. */
- /* Accept it, it may be inserted. */
- return 1;
-# endif
- break;
-#endif /* ENOMEDIUM */
- default:
- /* Break case and leave. */
- break;
- }
- /* Error opening the device. */
- goto fail;
- }
-
- /* Make sure CD-ROMs don't get assigned a BIOS disk number
- before SCSI disks! */
-#ifdef __linux__
-# ifdef CDROM_GET_CAPABILITY
- if (ioctl (fileno (fp), CDROM_GET_CAPABILITY, 0) >= 0)
- goto fail;
-# else /* ! CDROM_GET_CAPABILITY */
- /* Check if DEVICE is a CD-ROM drive by the HDIO_GETGEO ioctl. */
- {
- struct hd_geometry hdg;
- struct stat st;
-
- if (fstat (fileno (fp), &st))
- goto fail;
-
- /* If it is a block device and isn't a floppy, check if HDIO_GETGEO
- succeeds. */
- if (S_ISBLK (st.st_mode)
- && MAJOR (st.st_rdev) != FLOPPY_MAJOR
- && ioctl (fileno (fp), HDIO_GETGEO, &hdg))
- goto fail;
- }
-# endif /* ! CDROM_GET_CAPABILITY */
-#endif /* __linux__ */
-
-#if defined(__FreeBSD_kernel__) || defined(__NetBSD__) || defined(__OpenBSD__)
-# ifdef CDIOCCLRDEBUG
- if (ioctl (fileno (fp), CDIOCCLRDEBUG, 0) >= 0)
- goto fail;
-# endif /* CDIOCCLRDEBUG */
-#endif /* __FreeBSD_kernel__ || __NetBSD__ || __OpenBSD__ */
-
- /* Attempt to read the first sector. */
- if (fread (buf, 1, 512, fp) != 512)
- {
- fclose (fp);
- goto fail;
- }
-
- /* Remember that we've seen this device. */
- seen_elt = xmalloc (sizeof (*seen_elt));
- seen_elt->name = real_device; /* steal memory */
- grub_list_push (GRUB_AS_LIST_P (&seen), GRUB_AS_LIST (seen_elt));
-
- fclose (fp);
- return 1;
-
-fail:
- free (real_device);
- return 0;
-}
-
-static void
-clear_seen_devices (void)
-{
- while (seen)
- {
- struct seen_device *seen_elt = seen;
- seen = seen->next;
- free (seen_elt);
- }
- seen = NULL;
-}
-
-#ifdef __linux__
-struct device
-{
- char *stable;
- char *kernel;
-};
-
-/* Sort by the kernel name for preference since that most closely matches
- older device.map files, but sort by stable by-id names as a fallback.
- This is because /dev/disk/by-id/ usually has a few alternative
- identifications of devices (e.g. ATA vs. SATA).
- check_device_readable_unique will ensure that we only get one for any
- given disk, but sort the list so that the choice of which one we get is
- stable. */
-static int
-compare_devices (const void *a, const void *b)
-{
- const struct device *left = (const struct device *) a;
- const struct device *right = (const struct device *) b;
-
- if (left->kernel && right->kernel)
- {
- int ret = strcmp (left->kernel, right->kernel);
- if (ret)
- return ret;
- }
-
- return strcmp (left->stable, right->stable);
-}
-#endif /* __linux__ */
-
-void
-grub_util_iterate_devices (int NESTED_FUNC_ATTR (*hook) (const char *, int),
- int floppy_disks)
-{
- int i;
-
- clear_seen_devices ();
-
- /* Floppies. */
- for (i = 0; i < floppy_disks; i++)
- {
- char name[16];
- struct stat st;
-
- get_floppy_disk_name (name, i);
- if (stat (name, &st) < 0)
- break;
- /* In floppies, write the map, whether check_device_readable_unique
- succeeds or not, because the user just may not insert floppies. */
- if (hook (name, 1))
- goto out;
- }
-
-#ifdef __linux__
- {
- DIR *dir = opendir ("/dev/disk/by-id");
-
- if (dir)
- {
- struct dirent *entry;
- struct device *devs;
- size_t devs_len = 0, devs_max = 1024, i;
-
- devs = xmalloc (devs_max * sizeof (*devs));
-
- /* Dump all the directory entries into names, resizing if
- necessary. */
- for (entry = readdir (dir); entry; entry = readdir (dir))
- {
- /* Skip current and parent directory entries. */
- if (strcmp (entry->d_name, ".") == 0 ||
- strcmp (entry->d_name, "..") == 0)
- continue;
- /* Skip partition entries. */
- if (strstr (entry->d_name, "-part"))
- continue;
- /* Skip device-mapper entries; we'll handle the ones we want
- later. */
- if (strncmp (entry->d_name, "dm-", sizeof ("dm-") - 1) == 0)
- continue;
- /* Skip RAID entries; they are handled by upper layers. */
- if (strncmp (entry->d_name, "md-", sizeof ("md-") - 1) == 0)
- continue;
- if (devs_len >= devs_max)
- {
- devs_max *= 2;
- devs = xrealloc (devs, devs_max * sizeof (*devs));
- }
- devs[devs_len].stable =
- xasprintf ("/dev/disk/by-id/%s", entry->d_name);
- devs[devs_len].kernel =
- canonicalize_file_name (devs[devs_len].stable);
- devs_len++;
- }
-
- qsort (devs, devs_len, sizeof (*devs), &compare_devices);
-
- closedir (dir);
-
- /* Now add all the devices in sorted order. */
- for (i = 0; i < devs_len; ++i)
- {
- if (check_device_readable_unique (devs[i].stable))
- {
- if (hook (devs[i].stable, 0))
- goto out;
- }
- free (devs[i].stable);
- free (devs[i].kernel);
- }
- free (devs);
- }
- }
-
- if (have_devfs ())
- {
- i = 0;
- while (1)
- {
- char discn[32];
- char name[PATH_MAX];
- struct stat st;
-
- /* Linux creates symlinks "/dev/discs/discN" for convenience.
- The way to number disks is the same as GRUB's. */
- sprintf (discn, "/dev/discs/disc%d", i++);
- if (stat (discn, &st) < 0)
- break;
-
- if (realpath (discn, name))
- {
- strcat (name, "/disc");
- if (hook (name, 0))
- goto out;
- }
- }
- goto out;
- }
-#endif /* __linux__ */
-
- /* IDE disks. */
- for (i = 0; i < 96; i++)
- {
- char name[16];
-
- get_ide_disk_name (name, i);
- if (check_device_readable_unique (name))
- {
- if (hook (name, 0))
- goto out;
- }
- }
-
-#ifdef __FreeBSD_kernel__
- /* IDE disks using ATA Direct Access driver. */
- if (get_kfreebsd_version () >= 800000)
- for (i = 0; i < 96; i++)
- {
- char name[16];
-
- get_ada_disk_name (name, i);
- if (check_device_readable_unique (name))
- {
- if (hook (name, 0))
- goto out;
- }
- }
-
- /* ATARAID disks. */
- for (i = 0; i < 8; i++)
- {
- char name[20];
-
- get_ataraid_disk_name (name, i);
- if (check_device_readable_unique (name))
- {
- if (hook (name, 0))
- goto out;
- }
- }
-
- /* LSI MegaRAID SAS. */
- for (i = 0; i < 32; i++)
- {
- char name[20];
-
- get_mfi_disk_name (name, i);
- if (check_device_readable_unique (name))
- {
- if (hook (name, 0))
- goto out;
- }
- }
-#endif
-
-#ifdef __linux__
- /* Virtio disks. */
- for (i = 0; i < 26; i++)
- {
- char name[16];
-
- get_virtio_disk_name (name, i);
- if (check_device_readable_unique (name))
- {
- if (hook (name, 0))
- goto out;
- }
- }
-
- /* ATARAID disks. */
- for (i = 0; i < 8; i++)
- {
- char name[20];
-
- get_ataraid_disk_name (name, i);
- if (check_device_readable_unique (name))
- {
- if (hook (name, 0))
- goto out;
- }
- }
-
- /* Xen virtual block devices. */
- for (i = 0; i < 26; i++)
- {
- char name[16];
-
- get_xvd_disk_name (name, i);
- if (check_device_readable_unique (name))
- {
- if (hook (name, 0))
- goto out;
- }
- }
-#endif /* __linux__ */
-
- /* The rest is SCSI disks. */
- for (i = 0; i < 48; i++)
- {
- char name[16];
-
- get_scsi_disk_name (name, i);
- if (check_device_readable_unique (name))
- {
- if (hook (name, 0))
- goto out;
- }
- }
-
-#ifdef __linux__
- /* This is for DAC960 - we have
- /dev/rd/c<controller>d<logical drive>p<partition>.
-
- DAC960 driver currently supports up to 8 controllers, 32 logical
- drives, and 7 partitions. */
- {
- int controller, drive;
-
- for (controller = 0; controller < 8; controller++)
- {
- for (drive = 0; drive < 15; drive++)
- {
- char name[24];
-
- get_dac960_disk_name (name, controller, drive);
- if (check_device_readable_unique (name))
- {
- if (hook (name, 0))
- goto out;
- }
- }
- }
- }
-
- /* This is for Mylex Acceleraid - we have
- /dev/rd/c<controller>d<logical drive>p<partition>. */
- {
- int controller, drive;
-
- for (controller = 0; controller < 8; controller++)
- {
- for (drive = 0; drive < 15; drive++)
- {
- char name[24];
-
- get_acceleraid_disk_name (name, controller, drive);
- if (check_device_readable_unique (name))
- {
- if (hook (name, 0))
- goto out;
- }
- }
- }
- }
-
- /* This is for CCISS - we have
- /dev/cciss/c<controller>d<logical drive>p<partition>. */
- {
- int controller, drive;
-
- for (controller = 0; controller < 3; controller++)
- {
- for (drive = 0; drive < 16; drive++)
- {
- char name[24];
-
- get_cciss_disk_name (name, controller, drive);
- if (check_device_readable_unique (name))
- {
- if (hook (name, 0))
- goto out;
- }
- }
- }
- }
-
- /* This is for Compaq Intelligent Drive Array - we have
- /dev/ida/c<controller>d<logical drive>p<partition>. */
- {
- int controller, drive;
-
- for (controller = 0; controller < 3; controller++)
- {
- for (drive = 0; drive < 16; drive++)
- {
- char name[24];
-
- get_ida_disk_name (name, controller, drive);
- if (check_device_readable_unique (name))
- {
- if (hook (name, 0))
- goto out;
- }
- }
- }
- }
-
- /* This is for I2O - we have /dev/i2o/hd<logical drive><partition> */
- {
- char unit;
-
- for (unit = 'a'; unit < 'f'; unit++)
- {
- char name[24];
-
- get_i2o_disk_name (name, unit);
- if (check_device_readable_unique (name))
- {
- if (hook (name, 0))
- goto out;
- }
- }
- }
-
- /* MultiMediaCard (MMC). */
- for (i = 0; i < 10; i++)
- {
- char name[16];
-
- get_mmc_disk_name (name, i);
- if (check_device_readable_unique (name))
- {
- if (hook (name, 0))
- goto out;
- }
- }
-
-# ifdef HAVE_DEVICE_MAPPER
-# define dmraid_check(cond, ...) \
- if (! (cond)) \
- { \
- grub_dprintf ("deviceiter", __VA_ARGS__); \
- goto dmraid_end; \
- }
-
- /* DM-RAID. */
- if (grub_device_mapper_supported ())
- {
- struct dm_tree *tree = NULL;
- struct dm_task *task = NULL;
- struct dm_names *names = NULL;
- unsigned int next = 0;
- void *top_handle, *second_handle;
- struct dm_tree_node *root, *top, *second;
-
- /* Build DM tree for all devices. */
- tree = dm_tree_create ();
- dmraid_check (tree, "dm_tree_create failed\n");
- task = dm_task_create (DM_DEVICE_LIST);
- dmraid_check (task, "dm_task_create failed\n");
- dmraid_check (dm_task_run (task), "dm_task_run failed\n");
- names = dm_task_get_names (task);
- dmraid_check (names, "dm_task_get_names failed\n");
- dmraid_check (names->dev, "No DM devices found\n");
- do
- {
- names = (void *) names + next;
- dmraid_check (dm_tree_add_dev (tree, MAJOR (names->dev),
- MINOR (names->dev)),
- "dm_tree_add_dev (%s) failed\n", names->name);
- next = names->next;
- }
- while (next);
-
- /* Walk the second-level children of the inverted tree; that is, devices
- which are directly composed of non-DM devices such as hard disks.
- This class includes all DM-RAID disks and excludes all DM-RAID
- partitions. */
- root = dm_tree_find_node (tree, 0, 0);
- top_handle = NULL;
- top = dm_tree_next_child (&top_handle, root, 1);
- while (top)
- {
- second_handle = NULL;
- second = dm_tree_next_child (&second_handle, top, 1);
- while (second)
- {
- const char *node_name, *node_uuid;
- char *name;
-
- node_name = dm_tree_node_get_name (second);
- dmraid_check (node_name, "dm_tree_node_get_name failed\n");
- node_uuid = dm_tree_node_get_uuid (second);
- dmraid_check (node_uuid, "dm_tree_node_get_uuid failed\n");
- if (strncmp (node_uuid, "DMRAID-", 7) != 0)
- {
- grub_dprintf ("deviceiter", "%s is not DM-RAID\n", node_name);
- goto dmraid_next_child;
- }
-
- name = xasprintf ("/dev/mapper/%s", node_name);
- if (check_device_readable_unique (name))
- {
- if (hook (name, 0))
- {
- free (name);
- if (task)
- dm_task_destroy (task);
- if (tree)
- dm_tree_free (tree);
- goto out;
- }
- }
- free (name);
-
-dmraid_next_child:
- second = dm_tree_next_child (&second_handle, top, 1);
- }
- top = dm_tree_next_child (&top_handle, root, 1);
- }
-
-dmraid_end:
- if (task)
- dm_task_destroy (task);
- if (tree)
- dm_tree_free (tree);
- }
-# endif /* HAVE_DEVICE_MAPPER */
-#endif /* __linux__ */
-
-out:
- clear_seen_devices ();
-}
-
projects / thirdparty / grub.git / commitdiff
