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Move OS-dependent files to grub-core/osdep and document it.

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2013-10-08 17:30:22 +02:00
parent a5b0365ab2
commit 672fa55e81
30 changed files with 39 additions and 30 deletions
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102
grub-core/osdep/apple/getroot.c Normal file
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/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1999,2000,2001,2002,2003,2006,2007,2008,2009,2010,2011,2012,2013 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-util.h>
#include <config.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <assert.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <dirent.h>
#include <errno.h>
#include <error.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#ifdef HAVE_LIMITS_H
#include <limits.h>
#endif
#include <grub/types.h>
#include <grub/util/misc.h>
#include <grub/util/lvm.h>
#include <grub/mm.h>
#include <grub/misc.h>
#include <grub/emu/misc.h>
#include <grub/emu/hostdisk.h>
#include <grub/emu/getroot.h>
#include <sys/wait.h>
# include <sys/disk.h>
# include <sys/param.h>
# include <sys/sysctl.h>
# include <sys/mount.h>
char *
grub_util_part_to_disk (const char *os_dev, struct stat *st,
int *is_part)
{
char *path = xstrdup (os_dev);
if (strncmp ("/dev/", path, 5) == 0)
{
char *p;
for (p = path + 5; *p; ++p)
if (grub_isdigit(*p))
{
p = strpbrk (p, "sp");
if (p)
{
*is_part = 1;
*p = '\0';
}
break;
}
}
return path;
}
enum grub_dev_abstraction_types
grub_util_get_dev_abstraction_os (const char *os_dev __attribute__((unused)))
{
return GRUB_DEV_ABSTRACTION_NONE;
}
int
grub_util_pull_device_os (const char *os_dev __attribute__ ((unused)),
enum grub_dev_abstraction_types ab __attribute__ ((unused)))
{
return 0;
}
char *
grub_util_get_grub_dev_os (const char *os_dev __attribute__ ((unused)))
{
return NULL;
}
grub_disk_addr_t
grub_util_find_partition_start_os (const char *dev __attribute__ ((unused)))
{
return 0;
}

0
grub-core/kern/emu/hostdisk_apple.c → grub-core/osdep/apple/hostdisk.c
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271
grub-core/osdep/aros/getroot.c Normal file
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/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2013 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-util.h>
#include <config.h>
#include <grub/util/misc.h>
#include <grub/util/lvm.h>
#include <grub/mm.h>
#include <grub/misc.h>
#include <grub/emu/misc.h>
#include <grub/emu/hostdisk.h>
#include <grub/emu/getroot.h>
#include <string.h>
#include <dos/dos.h>
#include <dos/filesystem.h>
#include <dos/exall.h>
#include <proto/dos.h>
#include <proto/exec.h>
#include <devices/trackdisk.h>
char *
grub_util_part_to_disk (const char *dev,
struct stat *st __attribute__ ((unused)),
int *is_part)
{
const char *p;
char *dname;
char *ret;
struct DosList *dl;
struct DeviceNode *dn;
struct FileSysStartupMsg *fm;
struct DosEnvec *envec;
if (!dev[0])
return xstrdup (dev);
p = dev + strlen (dev) - 1;
if (*p != ':')
return xstrdup (dev);
dname = xmalloc (p - dev + 1);
memcpy (dname, dev, p - dev);
dname[p - dev] = '\0';
dl = LockDosList(LDF_READ);
if (!dl)
{
free (dname);
return xstrdup (dev);
}
dn = (struct DeviceNode *) FindDosEntry (dl, (unsigned char *) dname,
LDF_DEVICES);
UnLockDosList (LDF_READ);
free (dname);
if (!dn)
return xstrdup (dev);
fm = (struct FileSysStartupMsg *) BADDR(dn->dn_Startup);
envec = (struct DosEnvec *) fm->fssm_Environ;
if (envec->de_LowCyl == 0)
return xstrdup (dev);
*is_part = 1;
ret = xasprintf ("%s/%lx/%lx:", fm->fssm_Device, fm->fssm_Unit, (unsigned long) fm->fssm_Flags);
return ret;
}
enum grub_dev_abstraction_types
grub_util_get_dev_abstraction_os (const char *os_dev __attribute__((unused)))
{
return GRUB_DEV_ABSTRACTION_NONE;
}
int
grub_util_pull_device_os (const char *os_dev __attribute__ ((unused)),
enum grub_dev_abstraction_types ab __attribute__ ((unused)))
{
return 0;
}
char *
grub_util_get_grub_dev_os (const char *os_dev __attribute__ ((unused)))
{
return NULL;
}
grub_disk_addr_t
grub_util_find_partition_start_os (const char *dev)
{
const char *p;
char *dname;
struct DosList *dl;
struct DeviceNode *dn;
struct FileSysStartupMsg *fm;
struct DosEnvec *envec;
if (!dev[0])
return 0;
p = dev + strlen (dev) - 1;
if (*p != ':')
return 0;
dname = xmalloc (p - dev + 1);
memcpy (dname, dev, p - dev);
dname[p - dev] = '\0';
dl = LockDosList(LDF_READ);
if (!dl)
{
free (dname);
return 0;
}
dn = (struct DeviceNode *) FindDosEntry (dl, (unsigned char *) dname,
LDF_DEVICES);
UnLockDosList (LDF_READ);
free (dname);
if (!dn)
return 0;
fm = (struct FileSysStartupMsg *) BADDR(dn->dn_Startup);
envec = (struct DosEnvec *) fm->fssm_Environ;
return (((grub_uint64_t) envec->de_Surfaces
* (grub_uint64_t) envec->de_BlocksPerTrack
* (grub_uint64_t) envec->de_LowCyl)
* (grub_uint64_t) envec->de_SizeBlock) >> 7;
}
char *
grub_make_system_path_relative_to_its_root (const char *path)
{
char *p;
unsigned char *tmp = xmalloc (2048);
char *ret;
BPTR lck;
lck = Lock ((const unsigned char *) path, SHARED_LOCK);
if (!lck || !NameFromLock (lck, tmp, 2040))
{
free (tmp);
tmp = (unsigned char *) xstrdup (path);
}
if (lck)
UnLock (lck);
p = strchr ((char *) tmp, ':');
if (!p)
return (char *) tmp;
if (p[1] == '/' || p[1] == '\0')
{
ret = xstrdup (p + 1);
}
else
{
ret = xmalloc (strlen (p + 1) + 2);
ret[0] = '/';
strcpy (ret + 1, p + 1);
}
free (tmp);
return ret;
}
char **
grub_guess_root_devices (const char *path)
{
char **os_dev = NULL;
struct InfoData id;
BPTR lck;
struct DeviceList *dl;
struct DosList *dl2;
size_t sz;
const char *nm;
lck = Lock ((const unsigned char *) path, SHARED_LOCK);
if (!lck)
grub_util_info ("Lock(%s) failed", path);
if (!lck || !Info (lck, &id))
{
char *p;
if (lck)
UnLock (lck);
grub_util_info ("Info(%s) failed", path);
os_dev = xmalloc (2 * sizeof (os_dev[0]));
sz = strlen (path);
os_dev[0] = xmalloc (sz + 2);
memcpy (os_dev[0], path, sz);
os_dev[0][sz] = ':';
os_dev[0][sz+1] = '\0';
p = strchr (os_dev[0], ':');
*(p + 1) = '\0';
os_dev[1] = NULL;
return os_dev;
}
dl = BADDR (id.id_VolumeNode);
if (!dl->dl_Task)
grub_util_error ("unsupported device %s", dl->dl_Name);
grub_util_info ("dl=%p, dl->dl_Name=%s, dl->dl_Task=%p",
dl, dl->dl_Name,
dl->dl_Task);
for (dl2 = LockDosList(LDF_READ | LDF_DEVICES);
dl2;
dl2 = NextDosEntry (dl2, LDF_DEVICES))
{
if (dl2->dol_Task == dl->dl_Task)
break;
}
if (lck)
UnLock (lck);
if (dl2)
nm = (char *) dl2->dol_Name;
else
nm = (char *) dl->dl_Name;
grub_util_info ("dl2=%p, nm=%s", dl2, nm);
os_dev = xmalloc (2 * sizeof (os_dev[0]));
sz = strlen (nm);
os_dev[0] = xmalloc (sz + 2);
memcpy (os_dev[0], nm, sz);
os_dev[0][sz] = ':';
os_dev[0][sz+1] = '\0';
os_dev[1] = NULL;
UnLockDosList (LDF_READ | LDF_DEVICES);
return os_dev;
}
int
grub_util_biosdisk_is_floppy (grub_disk_t disk)
{
const char *dname, *p;
dname = grub_util_biosdisk_get_osdev (disk);
p = strchr (dname, ':');
if (!p || p[1])
return 0;
if (strncmp (dname, TD_NAME, sizeof (TD_NAME) - 1) == 0
&& (TD_NAME[sizeof (TD_NAME) - 1] == '/'
|| TD_NAME[sizeof (TD_NAME) - 1] == ':'))
return 1;
return 0;
}

0
grub-core/kern/emu/hostdisk_aros.c → grub-core/osdep/aros/hostdisk.c
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82
grub-core/osdep/basic/getroot.c Normal file
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/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1999,2000,2001,2002,2003,2006,2007,2008,2009,2010,2011,2012,2013 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-util.h>
#include <config.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <assert.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <dirent.h>
#include <errno.h>
#include <error.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#ifdef HAVE_LIMITS_H
#include <limits.h>
#endif
#include <grub/types.h>
#include <grub/util/misc.h>
#include <grub/util/lvm.h>
#include <grub/mm.h>
#include <grub/misc.h>
#include <grub/emu/misc.h>
#include <grub/emu/hostdisk.h>
#include <grub/emu/getroot.h>
char *
grub_util_part_to_disk (const char *os_dev,
struct stat *st __attribute__ ((unused)),
int *is_part)
{
*is_part = 0;
return xstrdup (os_dev);
}
enum grub_dev_abstraction_types
grub_util_get_dev_abstraction_os (const char *os_dev __attribute__((unused)))
{
return GRUB_DEV_ABSTRACTION_NONE;
}
int
grub_util_pull_device_os (const char *os_dev __attribute__ ((unused)),
enum grub_dev_abstraction_types ab __attribute__ ((unused)))
{
return 0;
}
char *
grub_util_get_grub_dev_os (const char *os_dev __attribute__ ((unused)))
{
return NULL;
}
grub_disk_addr_t
grub_util_find_partition_start_os (const char *dev __attribute__ ((unused)))
{
return 0;
}

0
grub-core/kern/emu/hostdisk_basic.c → grub-core/osdep/basic/hostdisk.c
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199
grub-core/osdep/bsd/getroot.c Normal file
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/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1999,2000,2001,2002,2003,2006,2007,2008,2009,2010,2011,2012,2013 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-util.h>
#include <config.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <assert.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <dirent.h>
#include <errno.h>
#include <error.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#ifdef HAVE_LIMITS_H
#include <limits.h>
#endif
#include <grub/types.h>
#include <grub/util/misc.h>
#include <grub/util/lvm.h>
#include <grub/mm.h>
#include <grub/misc.h>
#include <grub/emu/misc.h>
#include <grub/emu/hostdisk.h>
#include <grub/emu/getroot.h>
#include <sys/wait.h>
# include <sys/ioctl.h>
# include <sys/disklabel.h> /* struct disklabel */
# include <sys/disk.h> /* struct dkwedge_info */
# ifdef HAVE_GETRAWPARTITION
# include <util.h> /* getrawpartition */
# endif /* HAVE_GETRAWPARTITION */
#if defined(__NetBSD__)
# include <sys/fdio.h>
#endif
#if defined(__OpenBSD__)
# include <sys/dkio.h>
#endif
char *
grub_util_part_to_disk (const char *os_dev, struct stat *st,
int *is_part)
{
int rawpart = -1;
# ifdef HAVE_GETRAWPARTITION
rawpart = getrawpartition();
# endif /* HAVE_GETRAWPARTITION */
if (rawpart < 0)
return xstrdup (os_dev);
#if defined(__NetBSD__)
/* NetBSD disk wedges are of the form "/dev/rdk.*". */
if (strncmp ("/dev/rdk", os_dev, sizeof("/dev/rdk") - 1) == 0)
{
struct dkwedge_info dkw;
int fd;
fd = open (os_dev, O_RDONLY);
if (fd == -1)
{
grub_error (GRUB_ERR_BAD_DEVICE,
N_("cannot open `%s': %s"), os_dev,
strerror (errno));
return xstrdup (os_dev);
}
/* We don't call configure_device_driver since this isn't a floppy device name. */
if (ioctl (fd, DIOCGWEDGEINFO, &dkw) == -1)
{
grub_error (GRUB_ERR_BAD_DEVICE,
"cannot get disk wedge info of `%s'", os_dev);
close (fd);
return xstrdup (os_dev);
}
*is_part = (dkw.dkw_offset != 0);
close (fd);
return xasprintf ("/dev/r%s%c", dkw.dkw_parent, 'a' + rawpart);
}
#endif
/* NetBSD (disk label) partitions are of the form "/dev/r[a-z]+[0-9][a-z]". */
if (strncmp ("/dev/r", os_dev, sizeof("/dev/r") - 1) == 0 &&
(os_dev[sizeof("/dev/r") - 1] >= 'a' && os_dev[sizeof("/dev/r") - 1] <= 'z') &&
strncmp ("fd", os_dev + sizeof("/dev/r") - 1, sizeof("fd") - 1) != 0) /* not a floppy device name */
{
char *path = xstrdup (os_dev);
char *p;
for (p = path + sizeof("/dev/r"); *p >= 'a' && *p <= 'z'; p++);
if (grub_isdigit(*p))
{
p++;
if ((*p >= 'a' && *p <= 'z') && (*(p+1) == '\0'))
{
if (*p != 'a' + rawpart)
*is_part = 1;
/* path matches the required regular expression and
p points to its last character. */
*p = 'a' + rawpart;
}
}
return path;
}
return xstrdup (os_dev);
}
enum grub_dev_abstraction_types
grub_util_get_dev_abstraction_os (const char *os_dev __attribute__((unused)))
{
return GRUB_DEV_ABSTRACTION_NONE;
}
int
grub_util_pull_device_os (const char *os_dev __attribute__ ((unused)),
enum grub_dev_abstraction_types ab __attribute__ ((unused)))
{
return 0;
}
char *
grub_util_get_grub_dev_os (const char *os_dev __attribute__ ((unused)))
{
return NULL;
}
grub_disk_addr_t
grub_util_find_partition_start_os (const char *dev)
{
int fd;
# if defined(__NetBSD__)
struct dkwedge_info dkw;
# endif /* defined(__NetBSD__) */
struct disklabel label;
int p_index;
fd = open (dev, O_RDONLY);
if (fd == -1)
{
grub_error (GRUB_ERR_BAD_DEVICE, N_("cannot open `%s': %s"),
dev, strerror (errno));
return 0;
}
# if defined(__NetBSD__)
configure_device_driver (fd);
/* First handle the case of disk wedges. */
if (ioctl (fd, DIOCGWEDGEINFO, &dkw) == 0)
{
close (fd);
return (grub_disk_addr_t) dkw.dkw_offset;
}
# endif /* defined(__NetBSD__) */
if (ioctl (fd, DIOCGDINFO, &label) == -1)
{
grub_error (GRUB_ERR_BAD_DEVICE,
"cannot get disk label of `%s'", dev);
close (fd);
return 0;
}
close (fd);
if (dev[0])
p_index = dev[strlen(dev) - 1] - 'a';
else
p_index = -1;
if (p_index >= label.d_npartitions || p_index < 0)
{
grub_error (GRUB_ERR_BAD_DEVICE,
"no disk label entry for `%s'", dev);
return 0;
}
return (grub_disk_addr_t) label.d_partitions[p_index].p_offset;
}

0
grub-core/kern/emu/hostdisk_bsd.c → grub-core/osdep/bsd/hostdisk.c
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451
grub-core/osdep/devmapper/getroot.c Normal file
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/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1999,2000,2001,2002,2003,2006,2007,2008,2009,2010,2011,2012,2013 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-util.h>
#include <config.h>
#include <grub/emu/getroot.h>
#include <grub/mm.h>
#ifdef HAVE_DEVICE_MAPPER
#include <sys/stat.h>
#include <sys/types.h>
#include <assert.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <dirent.h>
#include <errno.h>
#include <error.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#ifdef HAVE_LIMITS_H
#include <limits.h>
#endif
#include <libdevmapper.h>
#include <grub/types.h>
#include <grub/util/misc.h>
#include <grub/util/lvm.h>
#include <grub/mm.h>
#include <grub/misc.h>
#include <grub/emu/misc.h>
#include <grub/emu/hostdisk.h>
static int
grub_util_open_dm (const char *os_dev, struct dm_tree **tree,
struct dm_tree_node **node)
{
uint32_t maj, min;
struct stat st;
*node = NULL;
*tree = NULL;
if (stat (os_dev, &st) < 0)
return 0;
maj = major (st.st_rdev);
min = minor (st.st_rdev);
if (!dm_is_dm_major (maj))
return 0;
*tree = dm_tree_create ();
if (! *tree)
{
grub_puts_ (N_("Failed to create `device-mapper' tree"));
grub_dprintf ("hostdisk", "dm_tree_create failed\n");
return 0;
}
if (! dm_tree_add_dev (*tree, maj, min))
{
grub_dprintf ("hostdisk", "dm_tree_add_dev failed\n");
dm_tree_free (*tree);
*tree = NULL;
return 0;
}
*node = dm_tree_find_node (*tree, maj, min);
if (! *node)
{
grub_dprintf ("hostdisk", "dm_tree_find_node failed\n");
dm_tree_free (*tree);
*tree = NULL;
return 0;
}
return 1;
}
static char *
get_dm_uuid (const char *os_dev)
{
struct dm_tree *tree;
struct dm_tree_node *node;
const char *node_uuid;
char *ret;
if (!grub_util_open_dm (os_dev, &tree, &node))
return NULL;
node_uuid = dm_tree_node_get_uuid (node);
if (! node_uuid)
{
grub_dprintf ("hostdisk", "%s has no DM uuid\n", os_dev);
dm_tree_free (tree);
return NULL;
}
ret = grub_strdup (node_uuid);
dm_tree_free (tree);
return ret;
}
enum grub_dev_abstraction_types
grub_util_get_dm_abstraction (const char *os_dev)
{
char *uuid;
uuid = get_dm_uuid (os_dev);
if (uuid == NULL)
return GRUB_DEV_ABSTRACTION_NONE;
if (strncmp (uuid, "LVM-", 4) == 0)
{
grub_free (uuid);
return GRUB_DEV_ABSTRACTION_LVM;
}
if (strncmp (uuid, "CRYPT-LUKS1-", 4) == 0)
{
grub_free (uuid);
return GRUB_DEV_ABSTRACTION_LUKS;
}
grub_free (uuid);
return GRUB_DEV_ABSTRACTION_NONE;
}
void
grub_util_pull_devmapper (const char *os_dev)
{
struct dm_tree *tree;
struct dm_tree_node *node;
struct dm_tree_node *child;
void *handle = NULL;
char *lastsubdev = NULL;
char *uuid;
uuid = get_dm_uuid (os_dev);
if (!grub_util_open_dm (os_dev, &tree, &node))
return;
while ((child = dm_tree_next_child (&handle, node, 0)))
{
const struct dm_info *dm = dm_tree_node_get_info (child);
char *subdev;
if (!dm)
continue;
subdev = grub_find_device ("/dev", makedev (dm->major, dm->minor));
if (subdev)
{
lastsubdev = subdev;
grub_util_pull_device (subdev);
}
}
if (uuid && strncmp (uuid, "CRYPT-LUKS1-", sizeof ("CRYPT-LUKS1-") - 1) == 0
&& lastsubdev)
{
char *grdev = grub_util_get_grub_dev (lastsubdev);
dm_tree_free (tree);
if (grdev)
{
grub_err_t err;
err = grub_cryptodisk_cheat_mount (grdev, os_dev);
if (err)
grub_util_error (_("can't mount encrypted volume `%s': %s"),
lastsubdev, grub_errmsg);
}
grub_free (grdev);
}
else
dm_tree_free (tree);
}
char *
grub_util_devmapper_part_to_disk (struct stat *st,
int *is_part, const char *path)
{
struct dm_tree *tree;
uint32_t maj, min;
struct dm_tree_node *node = NULL, *child;
void *handle;
const char *node_uuid, *mapper_name = NULL, *child_uuid, *child_name;
tree = dm_tree_create ();
if (! tree)
{
grub_util_info ("dm_tree_create failed");
goto devmapper_out;
}
maj = major (st->st_rdev);
min = minor (st->st_rdev);
if (! dm_tree_add_dev (tree, maj, min))
{
grub_util_info ("dm_tree_add_dev failed");
goto devmapper_out;
}
node = dm_tree_find_node (tree, maj, min);
if (! node)
{
grub_util_info ("dm_tree_find_node failed");
goto devmapper_out;
}
reiterate:
node_uuid = dm_tree_node_get_uuid (node);
if (! node_uuid)
{
grub_util_info ("%s has no DM uuid", path);
goto devmapper_out;
}
if (strncmp (node_uuid, "LVM-", 4) == 0)
{
grub_util_info ("%s is an LVM", path);
goto devmapper_out;
}
if (strncmp (node_uuid, "mpath-", 6) == 0)
{
/* Multipath partitions have partN-mpath-* UUIDs, and are
linear mappings so are handled by
grub_util_get_dm_node_linear_info. Multipath disks are not
linear mappings and must be handled specially. */
grub_util_info ("%s is a multipath disk", path);
goto devmapper_out;
}
if (strncmp (node_uuid, "DMRAID-", 7) != 0)
{
int major, minor;
const char *node_name;
grub_util_info ("%s is not DM-RAID", path);
if ((node_name = dm_tree_node_get_name (node))
&& grub_util_get_dm_node_linear_info (node_name,
&major, &minor, 0))
{
*is_part = 1;
if (tree)
dm_tree_free (tree);
char *ret = grub_find_device ("/dev",
(major << 8) | minor);
return ret;
}
goto devmapper_out;
}
handle = NULL;
/* Counter-intuitively, device-mapper refers to the disk-like
device containing a DM-RAID partition device as a "child" of
the partition device. */
child = dm_tree_next_child (&handle, node, 0);
if (! child)
{
grub_util_info ("%s has no DM children", path);
goto devmapper_out;
}
child_uuid = dm_tree_node_get_uuid (child);
if (! child_uuid)
{
grub_util_info ("%s child has no DM uuid", path);
goto devmapper_out;
}
else if (strncmp (child_uuid, "DMRAID-", 7) != 0)
{
grub_util_info ("%s child is not DM-RAID", path);
goto devmapper_out;
}
child_name = dm_tree_node_get_name (child);
if (! child_name)
{
grub_util_info ("%s child has no DM name", path);
goto devmapper_out;
}
mapper_name = child_name;
*is_part = 1;
node = child;
goto reiterate;
devmapper_out:
if (! mapper_name && node)
{
/* This is a DM-RAID disk, not a partition. */
mapper_name = dm_tree_node_get_name (node);
if (! mapper_name)
grub_util_info ("%s has no DM name", path);
}
char *ret;
if (mapper_name)
ret = xasprintf ("/dev/mapper/%s", mapper_name);
else
ret = NULL;
if (tree)
dm_tree_free (tree);
return ret;
}
int
grub_util_device_is_mapped_stat (struct stat *st)
{
if (!grub_device_mapper_supported ())
return 0;
return dm_is_dm_major (major (st->st_rdev));
}
char *
grub_util_get_devmapper_grub_dev (const char *os_dev)
{
char *uuid, *optr;
char *grub_dev;
uuid = get_dm_uuid (os_dev);
if (!uuid)
return NULL;
if (strncmp (uuid, "LVM-", sizeof ("LVM-") - 1) == 0)
{
unsigned i;
int dashes[] = { 0, 6, 10, 14, 18, 22, 26, 32, 38, 42, 46, 50, 54, 58};
grub_dev = xmalloc (grub_strlen (uuid) + 40);
optr = grub_stpcpy (grub_dev, "lvmid/");
for (i = 0; i < ARRAY_SIZE (dashes) - 1; i++)
{
memcpy (optr, uuid + sizeof ("LVM-") - 1 + dashes[i],
dashes[i+1] - dashes[i]);
optr += dashes[i+1] - dashes[i];
*optr++ = '-';
}
optr = stpcpy (optr, uuid + sizeof ("LVM-") - 1 + dashes[i]);
*optr = '\0';
grub_dev[sizeof("lvmid/xxxxxx-xxxx-xxxx-xxxx-xxxx-xxxx-xxxxxx") - 1]
= '/';
free (uuid);
return grub_dev;
}
if (strncmp (uuid, "CRYPT-LUKS1-", sizeof ("CRYPT-LUKS1-") - 1) == 0)
{
char *dash;
dash = grub_strchr (uuid + sizeof ("CRYPT-LUKS1-") - 1, '-');
if (dash)
*dash = 0;
grub_dev = grub_xasprintf ("cryptouuid/%s",
uuid + sizeof ("CRYPT-LUKS1-") - 1);
grub_free (uuid);
return grub_dev;
}
return NULL;
}
char *
grub_util_get_vg_uuid (const char *os_dev)
{
char *uuid, *vgid;
int dashes[] = { 0, 6, 10, 14, 18, 22, 26, 32};
unsigned i;
char *optr;
uuid = get_dm_uuid (os_dev);
if (!uuid)
return NULL;
vgid = xmalloc (grub_strlen (uuid));
optr = vgid;
for (i = 0; i < ARRAY_SIZE (dashes) - 1; i++)
{
memcpy (optr, uuid + sizeof ("LVM-") - 1 + dashes[i],
dashes[i+1] - dashes[i]);
optr += dashes[i+1] - dashes[i];
*optr++ = '-';
}
optr--;
*optr = '\0';
return vgid;
}
void
grub_util_devmapper_cleanup (void)
{
dm_lib_release ();
}
#else
void
grub_util_pull_devmapper (const char *os_dev __attribute__ ((unused)))
{
return;
}
int
grub_util_device_is_mapped_stat (struct stat *st __attribute__ ((unused)))
{
return 0;
}
void
grub_util_devmapper_cleanup (void)
{
}
enum grub_dev_abstraction_types
grub_util_get_dm_abstraction (const char *os_dev __attribute__ ((unused)))
{
return GRUB_DEV_ABSTRACTION_NONE;
}
char *
grub_util_get_vg_uuid (const char *os_dev __attribute__ ((unused)))
{
return NULL;
}
char *
grub_util_devmapper_part_to_disk (struct stat *st __attribute__ ((unused)),
int *is_part __attribute__ ((unused)),
const char *os_dev __attribute__ ((unused)))
{
return NULL;
}
char *
grub_util_get_devmapper_grub_dev (const char *os_dev __attribute__ ((unused)))
{
return NULL;
}
#endif

0
grub-core/kern/emu/hostdisk_devmapper.c → grub-core/osdep/devmapper/hostdisk.c
View file

355
grub-core/osdep/freebsd/getroot.c Normal file
View file

@ -0,0 +1,355 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1999,2000,2001,2002,2003,2006,2007,2008,2009,2010,2011,2012,2013 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-util.h>
#include <config.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <assert.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <dirent.h>
#include <errno.h>
#include <error.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#ifdef HAVE_LIMITS_H
#include <limits.h>
#endif
#include <grub/types.h>
# include <sys/param.h>
# include <sys/mount.h>
# include <sys/disk.h> /* DIOCGMEDIASIZE */
# include <sys/param.h>
# include <sys/sysctl.h>
#include <libgeom.h>
#include <grub/util/misc.h>
#include <grub/util/lvm.h>
#include <grub/mm.h>
#include <grub/misc.h>
#include <grub/emu/misc.h>
#include <grub/emu/hostdisk.h>
#include <grub/emu/getroot.h>
#include <grub/cryptodisk.h>
#include <sys/wait.h>
#include <libgeom.h>
static const char *
grub_util_get_geom_abstraction (const char *dev)
{
char *whole;
struct gmesh mesh;
struct gclass *class;
const char *name;
int err;
if (strncmp (dev, "/dev/", sizeof ("/dev/") - 1) != 0)
return 0;
name = dev + sizeof ("/dev/") - 1;
grub_util_follow_gpart_up (name, NULL, &whole);
grub_util_info ("following geom '%s'", name);
err = geom_gettree (&mesh);
if (err != 0)
/* TRANSLATORS: geom is the name of (k)FreeBSD device framework.
Usually left untranslated.
*/
grub_util_error ("%s", _("couldn't open geom"));
LIST_FOREACH (class, &mesh.lg_class, lg_class)
{
struct ggeom *geom;
LIST_FOREACH (geom, &class->lg_geom, lg_geom)
{
struct gprovider *provider;
LIST_FOREACH (provider, &geom->lg_provider, lg_provider)
if (strcmp (provider->lg_name, name) == 0)
return class->lg_name;
}
}
return NULL;
}
enum grub_dev_abstraction_types
grub_util_get_dev_abstraction_os (const char *os_dev)
{
const char *abstrac;
abstrac = grub_util_get_geom_abstraction (os_dev);
grub_util_info ("abstraction of %s is %s", os_dev, abstrac);
if (abstrac && grub_strcasecmp (abstrac, "eli") == 0)
return GRUB_DEV_ABSTRACTION_GELI;
/* Check for LVM. */
if (!strncmp (os_dev, LVM_DEV_MAPPER_STRING, sizeof(LVM_DEV_MAPPER_STRING)-1))
return GRUB_DEV_ABSTRACTION_LVM;
return GRUB_DEV_ABSTRACTION_NONE;
}
char *
grub_util_part_to_disk (const char *os_dev, struct stat *st,
int *is_part)
{
char *out, *out2;
if (strncmp (os_dev, "/dev/", sizeof ("/dev/") - 1) != 0)
return xstrdup (os_dev);
grub_util_follow_gpart_up (os_dev + sizeof ("/dev/") - 1, NULL, &out);
if (grub_strcmp (os_dev + sizeof ("/dev/") - 1, out) != 0)
*is_part = 1;
out2 = xasprintf ("/dev/%s", out);
free (out);
return out2;
}
int
grub_util_pull_device_os (const char *os_dev,
enum grub_dev_abstraction_types ab)
{
switch (ab)
{
case GRUB_DEV_ABSTRACTION_GELI:
{
char *whole;
struct gmesh mesh;
struct gclass *class;
const char *name;
int err;
char *lastsubdev = NULL;
if (strncmp (os_dev, "/dev/", sizeof ("/dev/") - 1) != 0)
return 1;
name = os_dev + sizeof ("/dev/") - 1;
grub_util_follow_gpart_up (name, NULL, &whole);
grub_util_info ("following geom '%s'", name);
err = geom_gettree (&mesh);
if (err != 0)
/* TRANSLATORS: geom is the name of (k)FreeBSD device framework.
Usually left untranslated.
*/
grub_util_error ("%s", _("couldn't open geom"));
LIST_FOREACH (class, &mesh.lg_class, lg_class)
{
struct ggeom *geom;
LIST_FOREACH (geom, &class->lg_geom, lg_geom)
{
struct gprovider *provider;
LIST_FOREACH (provider, &geom->lg_provider, lg_provider)
if (strcmp (provider->lg_name, name) == 0)
{
struct gconsumer *consumer;
char *fname;
LIST_FOREACH (consumer, &geom->lg_consumer, lg_consumer)
break;
if (!consumer)
grub_util_error ("%s",
_("couldn't find geli consumer"));
fname = xasprintf ("/dev/%s", consumer->lg_provider->lg_name);
grub_util_info ("consumer %s", consumer->lg_provider->lg_name);
lastsubdev = consumer->lg_provider->lg_name;
grub_util_pull_device (fname);
free (fname);
}
}
}
if (ab == GRUB_DEV_ABSTRACTION_GELI && lastsubdev)
{
char *fname = xasprintf ("/dev/%s", lastsubdev);
char *grdev = grub_util_get_grub_dev (fname);
free (fname);
if (grdev)
{
grub_err_t gr_err;
gr_err = grub_cryptodisk_cheat_mount (grdev, os_dev);
if (gr_err)
grub_util_error (_("can't mount encrypted volume `%s': %s"),
lastsubdev, grub_errmsg);
}
grub_free (grdev);
}
}
return 1;
default:
return 0;
}
}
char *
grub_util_get_grub_dev_os (const char *os_dev)
{
char *grub_dev = NULL;
switch (grub_util_get_dev_abstraction (os_dev))
{
/* Fallback for non-devmapper build. In devmapper-builds LVM is handled
in rub_util_get_devmapper_grub_dev and this point isn't reached.
*/
case GRUB_DEV_ABSTRACTION_LVM:
{
unsigned short len;
grub_size_t offset = sizeof (LVM_DEV_MAPPER_STRING) - 1;
len = strlen (os_dev) - offset + 1;
grub_dev = xmalloc (len + sizeof ("lvm/"));
grub_memcpy (grub_dev, "lvm/", sizeof ("lvm/") - 1);
grub_memcpy (grub_dev + sizeof ("lvm/") - 1, os_dev + offset, len);
}
break;
case GRUB_DEV_ABSTRACTION_GELI:
{
char *whole;
struct gmesh mesh;
struct gclass *class;
const char *name;
int err;
if (strncmp (os_dev, "/dev/", sizeof ("/dev/") - 1) != 0)
return 0;
name = os_dev + sizeof ("/dev/") - 1;
grub_util_follow_gpart_up (name, NULL, &whole);
grub_util_info ("following geom '%s'", name);
err = geom_gettree (&mesh);
if (err != 0)
/* TRANSLATORS: geom is the name of (k)FreeBSD device framework.
Usually left untranslated.
*/
grub_util_error ("%s", _("couldn't open geom"));
LIST_FOREACH (class, &mesh.lg_class, lg_class)
{
struct ggeom *geom;
LIST_FOREACH (geom, &class->lg_geom, lg_geom)
{
struct gprovider *provider;
LIST_FOREACH (provider, &geom->lg_provider, lg_provider)
if (strcmp (provider->lg_name, name) == 0)
{
struct gconsumer *consumer;
char *fname;
char *uuid;
LIST_FOREACH (consumer, &geom->lg_consumer, lg_consumer)
break;
if (!consumer)
grub_util_error ("%s",
_("couldn't find geli consumer"));
fname = xasprintf ("/dev/%s", consumer->lg_provider->lg_name);
uuid = grub_util_get_geli_uuid (fname);
if (!uuid)
grub_util_error ("%s",
_("couldn't retrieve geli UUID"));
grub_dev = xasprintf ("cryptouuid/%s", uuid);
free (fname);
free (uuid);
}
}
}
}
break;
default:
break;
}
return grub_dev;
}
/* FIXME: geom actually gives us the whole container hierarchy.
It can be used more efficiently than this. */
void
grub_util_follow_gpart_up (const char *name, grub_disk_addr_t *off_out, char **name_out)
{
struct gmesh mesh;
struct gclass *class;
int err;
struct ggeom *geom;
grub_util_info ("following geom '%s'", name);
err = geom_gettree (&mesh);
if (err != 0)
/* TRANSLATORS: geom is the name of (k)FreeBSD device framework.
Usually left untranslated.
*/
grub_util_error ("%s", _("couldn't open geom"));
LIST_FOREACH (class, &mesh.lg_class, lg_class)
if (strcasecmp (class->lg_name, "part") == 0)
break;
if (!class)
/* TRANSLATORS: geom is the name of (k)FreeBSD device framework.
Usually left untranslated. "part" is the identifier of one of its
classes. */
grub_util_error ("%s", _("couldn't find geom `part' class"));
LIST_FOREACH (geom, &class->lg_geom, lg_geom)
{
struct gprovider *provider;
LIST_FOREACH (provider, &geom->lg_provider, lg_provider)
if (strcmp (provider->lg_name, name) == 0)
{
char *name_tmp = xstrdup (geom->lg_name);
grub_disk_addr_t off = 0;
struct gconfig *config;
grub_util_info ("geom '%s' has parent '%s'", name, geom->lg_name);
grub_util_follow_gpart_up (name_tmp, &off, name_out);
free (name_tmp);
LIST_FOREACH (config, &provider->lg_config, lg_config)
if (strcasecmp (config->lg_name, "start") == 0)
off += strtoull (config->lg_val, 0, 10);
if (off_out)
*off_out = off;
return;
}
}
grub_util_info ("geom '%s' has no parent", name);
if (name_out)
*name_out = xstrdup (name);
if (off_out)
*off_out = 0;
}
grub_disk_addr_t
grub_util_find_partition_start_os (const char *dev)
{
grub_disk_addr_t out;
if (strncmp (dev, "/dev/", sizeof ("/dev/") - 1) != 0)
return 0;
grub_util_follow_gpart_up (dev + sizeof ("/dev/") - 1, &out, NULL);
return out;
}

0
grub-core/kern/emu/hostdisk_freebsd.c → grub-core/osdep/freebsd/hostdisk.c
View file

20
grub-core/osdep/getroot.c Normal file
View file

@ -0,0 +1,20 @@
#ifdef __linux__
#include "linux/getroot.c"
#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
#include "freebsd/getroot.c"
#elif defined(__NetBSD__) || defined(__OpenBSD__)
#include "bsd/getroot.c"
#elif defined(__APPLE__)
#include "apple/getroot.c"
#elif defined(__sun__)
#include "sun/getroot.c"
#elif defined(__GNU__)
#include "hurd/getroot.c"
#elif defined(__CYGWIN__) || defined (__MINGW32__)
#include "windows/getroot.c"
#elif defined(__AROS__)
#include "aros/getroot.c"
#else
# warning "No getroot OS-specific functions is available for your system. Device detection may not work properly."
#include "basic/getroot.c"
#endif

18
grub-core/kern/emu/hostdisk_os.c → grub-core/osdep/hostdisk.c
View file

@ -1,20 +1,20 @@
#ifdef __linux__
#include "hostdisk_linux.c"
#include "linux/hostdisk.c"
#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
#include "hostdisk_freebsd.c"
#include "freebsd/hostdisk.c"
#elif defined(__NetBSD__) || defined(__OpenBSD__)
#include "hostdisk_bsd.c"
#include "bsd/hostdisk.c"
#elif defined(__APPLE__)
#include "hostdisk_apple.c"
#include "apple/hostdisk.c"
#elif defined(__sun__)
#include "hostdisk_sun.c"
#include "sun/hostdisk.c"
#elif defined(__GNU__)
#include "hostdisk_hurd.c"
#include "hurd/hostdisk.c"
#elif defined(__CYGWIN__) || defined(__MINGW32__)
#include "hostdisk_windows.c"
#include "windows/hostdisk.c"
#elif defined(__AROS__)
#include "hostdisk_aros.c"
#include "aros/hostdisk.c"
#else
# warning "No hostdisk OS-specific functions is available for your system. Device detection may not work properly."
#include "hostdisk_basic.c"
#include "basic/hostdisk.c"
#endif

241
grub-core/osdep/hurd/getroot.c Normal file
View file

@ -0,0 +1,241 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1999,2000,2001,2002,2003,2006,2007,2008,2009,2010,2011,2012,2013 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-util.h>
#include <config.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <assert.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <dirent.h>
#include <errno.h>
#include <error.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#ifdef HAVE_LIMITS_H
#include <limits.h>
#endif
#include <grub/types.h>
#include <grub/util/misc.h>
#include <grub/util/lvm.h>
#include <grub/mm.h>
#include <grub/misc.h>
#include <grub/emu/misc.h>
#include <grub/emu/hostdisk.h>
#include <grub/emu/getroot.h>
#include <sys/wait.h>
#include <hurd.h>
#include <hurd/lookup.h>
#include <hurd/fs.h>
#include <sys/mman.h>
static char *
grub_util_find_hurd_root_device (const char *path)
{
file_t file;
error_t err;
char *argz = NULL, *name = NULL, *ret;
size_t argz_len = 0;
int i;
file = file_name_lookup (path, 0, 0);
if (file == MACH_PORT_NULL)
/* TRANSLATORS: The first %s is the file being looked at, the second %s is
the error message. */
grub_util_error (_("cannot open `%s': %s"), path, strerror (errno));
/* This returns catenated 0-terminated strings. */
err = file_get_fs_options (file, &argz, &argz_len);
if (err)
/* TRANSLATORS: On GNU/Hurd, a "translator" is similar to a filesystem
mount, but handled by a userland daemon, whose invocation command line
is being fetched here. First %s is the file being looked at (for which
we are fetching the "translator" command line), second %s is the error
message.
*/
grub_util_error (_("cannot get translator command line "
"for path `%s': %s"), path, strerror(err));
if (argz_len == 0)
grub_util_error (_("translator command line is empty for path `%s'"), path);
/* Make sure the string is terminated. */
argz[argz_len-1] = 0;
/* Skip first word (translator path) and options. */
for (i = strlen (argz) + 1; i < argz_len; i += strlen (argz + i) + 1)
{
if (argz[i] != '-')
{
/* Non-option. Only accept one, assumed to be the FS path. */
/* XXX: this should be replaced by an RPC to the translator. */
if (name)
/* TRANSLATORS: we expect to get something like
/hurd/foobar --option1 --option2=baz /dev/something
*/
grub_util_error (_("translator `%s' for path `%s' has several "
"non-option words, at least `%s' and `%s'"),
argz, path, name, argz + i);
name = argz + i;
}
}
if (!name)
/* TRANSLATORS: we expect to get something like
/hurd/foobar --option1 --option2=baz /dev/something
*/
grub_util_error (_("translator `%s' for path `%s' is given only options, "
"cannot find device part"), argz, path);
if (strncmp (name, "device:", sizeof ("device:") - 1) == 0)
{
char *dev_name = name + sizeof ("device:") - 1;
size_t size = sizeof ("/dev/") - 1 + strlen (dev_name) + 1;
char *next;
ret = malloc (size);
next = stpncpy (ret, "/dev/", size);
stpncpy (next, dev_name, size - (next - ret));
}
else if (!strncmp (name, "file:", sizeof ("file:") - 1))
ret = strdup (name + sizeof ("file:") - 1);
else
ret = strdup (name);
munmap (argz, argz_len);
return ret;
}
static int
is_fulldisk (const char *child, const char *parent)
{
if (strcmp (parent, child) == 0)
return 1;
if (strncmp (parent, "/dev/", sizeof ("/dev/") - 1) == 0
&& child[0] !=0 && strcmp (parent + sizeof ("/dev/") - 1, child) == 0)
return 1;
if (strncmp (child, "/dev/", sizeof ("/dev/") - 1) == 0
&& parent[0] != 0 && strcmp (child + sizeof ("/dev/") - 1, parent) == 0)
return 1;
return 0;
}
char *
grub_util_part_to_disk (const char *os_dev,
struct stat *st __attribute__ ((unused)),
int *is_part)
{
char *path;
grub_disk_addr_t offset;
char *p;
if (!grub_util_hurd_get_disk_info (os_dev, NULL, &offset, NULL, &path))
return xstrdup (os_dev);
/* Some versions of Hurd use badly glued Linux code to handle partitions
resulting in partitions being promoted to disks. */
if (path && !(offset == 0 && is_fulldisk (path, os_dev)
&& (strncmp ("/dev/sd", os_dev, 7) == 0
|| strncmp ("/dev/hd", os_dev, 7) == 0)))
{
*is_part = !is_fulldisk (path, os_dev);
if (path[0] != '/')
{
char *n = xasprintf ("/dev/%s", path);
free (path);
path = n;
}
return path;
}
free (path);
path = xstrdup (os_dev);
p = strchr (path + 7, 's');
if (p)
{
*is_part = 1;
*p = '\0';
}
return path;
}
enum grub_dev_abstraction_types
grub_util_get_dev_abstraction_os (const char *os_dev __attribute__((unused)))
{
return GRUB_DEV_ABSTRACTION_NONE;
}
int
grub_util_pull_device_os (const char *os_dev __attribute__ ((unused)),
enum grub_dev_abstraction_types ab __attribute__ ((unused)))
{
return 0;
}
char *
grub_util_get_grub_dev_os (const char *os_dev __attribute__ ((unused)))
{
return NULL;
}
grub_disk_addr_t
grub_util_find_partition_start_os (const char *dev)
{
grub_uint32_t secsize;
grub_disk_addr_t offset;
char *path;
if (!grub_util_hurd_get_disk_info (dev, &secsize, &offset, NULL, &path))
return 0;
if (path && !(offset == 0 && is_fulldisk (path, dev)
&& (strncmp ("/dev/sd", dev, 7) == 0
|| strncmp ("/dev/hd", dev, 7) == 0)))
{
free (path);
return (secsize / 512) * offset;
}
free (path);
return -1;
}
char **
grub_guess_root_devices (const char *dir)
{
char **os_dev = NULL;
os_dev = xmalloc (2 * sizeof (os_dev[0]));
/* GNU/Hurd specific function. */
os_dev[0] = grub_util_find_hurd_root_device (dir);
if (!os_dev[0])
{
free (os_dev);
return 0;
}
os_dev[1] = 0;
return os_dev;
}

0
grub-core/kern/emu/hostdisk_hurd.c → grub-core/osdep/hurd/hostdisk.c
View file

911
grub-core/osdep/linux/getroot.c Normal file
View file

@ -0,0 +1,911 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1999,2000,2001,2002,2003,2006,2007,2008,2009,2010,2011,2012,2013 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-util.h>
#include <config.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <assert.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <dirent.h>
#include <errno.h>
#include <error.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#ifdef HAVE_LIMITS_H
#include <limits.h>
#endif
#include <grub/types.h>
#include <sys/ioctl.h> /* ioctl */
#include <sys/mount.h>
#include <grub/util/misc.h>
#include <grub/util/lvm.h>
#include <grub/mm.h>
#include <grub/misc.h>
#include <grub/emu/misc.h>
#include <grub/emu/hostdisk.h>
#include <grub/emu/getroot.h>
#include <sys/wait.h>
#include <linux/types.h>
#include <linux/major.h>
#include <linux/raid/md_p.h>
#include <linux/raid/md_u.h>
#include <grub/i18n.h>
/* Defines taken from btrfs/ioctl.h. */
struct btrfs_ioctl_dev_info_args
{
grub_uint64_t devid;
grub_uint8_t uuid[16];
grub_uint64_t bytes_used;
grub_uint64_t total_bytes;
grub_uint64_t unused[379];
grub_uint8_t path[1024];
};
struct btrfs_ioctl_fs_info_args
{
grub_uint64_t max_id;
grub_uint64_t num_devices;
grub_uint8_t fsid[16];
grub_uint64_t reserved[124];
};
#define BTRFS_IOC_DEV_INFO _IOWR(0x94, 30, \
struct btrfs_ioctl_dev_info_args)
#define BTRFS_IOC_FS_INFO _IOR(0x94, 31, \
struct btrfs_ioctl_fs_info_args)
static int
grub_util_is_imsm (const char *os_dev);
#define ESCAPED_PATH_MAX (4 * PATH_MAX)
struct mountinfo_entry
{
int id;
int major, minor;
char enc_root[ESCAPED_PATH_MAX + 1], enc_path[ESCAPED_PATH_MAX + 1];
char fstype[ESCAPED_PATH_MAX + 1], device[ESCAPED_PATH_MAX + 1];
};
static char **
grub_util_raid_getmembers (const char *name, int bootable)
{
int fd, ret, i, j;
char **devicelist;
mdu_version_t version;
mdu_array_info_t info;
mdu_disk_info_t disk;
fd = open (name, O_RDONLY);
if (fd == -1)
grub_util_error (_("cannot open `%s': %s"), name, strerror (errno));
ret = ioctl (fd, RAID_VERSION, &version);
if (ret != 0)
grub_util_error (_("ioctl RAID_VERSION error: %s"), strerror (errno));
if ((version.major != 0 || version.minor != 90)
&& (version.major != 1 || version.minor != 0)
&& (version.major != 1 || version.minor != 1)
&& (version.major != 1 || version.minor != 2))
grub_util_error (_("unsupported RAID version: %d.%d"),
version.major, version.minor);
if (bootable && (version.major != 0 || version.minor != 90))
grub_util_error (_("unsupported RAID version: %d.%d"),
version.major, version.minor);
ret = ioctl (fd, GET_ARRAY_INFO, &info);
if (ret != 0)
grub_util_error (_("ioctl GET_ARRAY_INFO error: %s"), strerror (errno));
devicelist = xmalloc ((info.nr_disks + 1) * sizeof (char *));
for (i = 0, j = 0; j < info.nr_disks; i++)
{
disk.number = i;
ret = ioctl (fd, GET_DISK_INFO, &disk);
if (ret != 0)
grub_util_error (_("ioctl GET_DISK_INFO error: %s"), strerror (errno));
if (disk.state & (1 << MD_DISK_REMOVED))
continue;
if (disk.state & (1 << MD_DISK_ACTIVE))
devicelist[j] = grub_find_device (NULL,
makedev (disk.major, disk.minor));
else
devicelist[j] = NULL;
j++;
}
devicelist[j] = NULL;
close (fd);
return devicelist;
}
/* Statting something on a btrfs filesystem always returns a virtual device
major/minor pair rather than the real underlying device, because btrfs
can span multiple underlying devices (and even if it's currently only
using a single device it can be dynamically extended onto another). We
can't deal with the multiple-device case yet, but in the meantime, we can
at least cope with the single-device case by scanning
/proc/self/mountinfo. */
static void
unescape (char *str)
{
char *optr;
const char *iptr;
for (iptr = optr = str; *iptr; optr++)
{
if (iptr[0] == '\\' && iptr[1] >= '0' && iptr[1] < '8'
&& iptr[2] >= '0' && iptr[2] < '8'
&& iptr[3] >= '0' && iptr[3] < '8')
{
*optr = (((iptr[1] - '0') << 6) | ((iptr[2] - '0') << 3)
| (iptr[3] - '0'));
iptr += 4;
}
else
*optr = *iptr++;
}
*optr = 0;
}
static char **
grub_find_root_devices_from_btrfs (const char *dir)
{
int fd;
struct btrfs_ioctl_fs_info_args fsi;
int i, j = 0;
char **ret;
fd = open (dir, 0);
if (!fd)
return NULL;
if (ioctl (fd, BTRFS_IOC_FS_INFO, &fsi) < 0)
{
close (fd);
return NULL;
}
ret = xmalloc ((fsi.num_devices + 1) * sizeof (ret[0]));
for (i = 1; i <= fsi.max_id && j < fsi.num_devices; i++)
{
struct btrfs_ioctl_dev_info_args devi;
memset (&devi, 0, sizeof (devi));
devi.devid = i;
if (ioctl (fd, BTRFS_IOC_DEV_INFO, &devi) < 0)
{
close (fd);
free (ret);
return NULL;
}
ret[j++] = xstrdup ((char *) devi.path);
if (j >= fsi.num_devices)
break;
}
close (fd);
ret[j] = 0;
return ret;
}
char **
grub_find_root_devices_from_mountinfo (const char *dir, char **relroot)
{
FILE *fp;
char *buf = NULL;
size_t len = 0;
grub_size_t entry_len = 0, entry_max = 4;
struct mountinfo_entry *entries;
struct mountinfo_entry parent_entry = { 0, 0, 0, "", "", "", "" };
int i;
if (! *dir)
dir = "/";
if (relroot)
*relroot = NULL;
fp = fopen ("/proc/self/mountinfo", "r");
if (! fp)
return NULL; /* fall through to other methods */
entries = xmalloc (entry_max * sizeof (*entries));
/* First, build a list of relevant visible mounts. */
while (getline (&buf, &len, fp) > 0)
{
struct mountinfo_entry entry;
int count;
size_t enc_path_len;
const char *sep;
if (sscanf (buf, "%d %d %u:%u %s %s%n",
&entry.id, &parent_entry.id, &entry.major, &entry.minor,
entry.enc_root, entry.enc_path, &count) < 6)
continue;
unescape (entry.enc_root);
unescape (entry.enc_path);
enc_path_len = strlen (entry.enc_path);
/* Check that enc_path is a prefix of dir. The prefix must either be
the entire string, or end with a slash, or be immediately followed
by a slash. */
if (strncmp (dir, entry.enc_path, enc_path_len) != 0 ||
(enc_path_len && dir[enc_path_len - 1] != '/' &&
dir[enc_path_len] && dir[enc_path_len] != '/'))
continue;
sep = strstr (buf + count, " - ");
if (!sep)
continue;
sep += sizeof (" - ") - 1;
if (sscanf (sep, "%s %s", entry.fstype, entry.device) != 2)
continue;
unescape (entry.device);
/* Using the mount IDs, find out where this fits in the list of
visible mount entries we've seen so far. There are three
interesting cases. Firstly, it may be inserted at the end: this is
the usual case of /foo/bar being mounted after /foo. Secondly, it
may be inserted at the start: for example, this can happen for
filesystems that are mounted before / and later moved under it.
Thirdly, it may occlude part or all of the existing filesystem
tree, in which case the end of the list needs to be pruned and this
new entry will be inserted at the end. */
if (entry_len >= entry_max)
{
entry_max <<= 1;
entries = xrealloc (entries, entry_max * sizeof (*entries));
}
if (!entry_len)
{
/* Initialise list. */
entry_len = 2;
entries[0] = parent_entry;
entries[1] = entry;
}
else
{
for (i = entry_len - 1; i >= 0; i--)
{
if (entries[i].id == parent_entry.id)
{
/* Insert at end, pruning anything previously above this. */
entry_len = i + 2;
entries[i + 1] = entry;
break;
}
else if (i == 0 && entries[i].id == entry.id)
{
/* Insert at start. */
entry_len++;
memmove (entries + 1, entries,
(entry_len - 1) * sizeof (*entries));
entries[0] = parent_entry;
entries[1] = entry;
break;
}
}
}
}
/* Now scan visible mounts for the ones we're interested in. */
for (i = entry_len - 1; i >= 0; i--)
{
char **ret = NULL;
if (!*entries[i].device)
continue;
if (grub_strcmp (entries[i].fstype, "fuse.zfs") == 0
|| grub_strcmp (entries[i].fstype, "zfs") == 0)
{
char *slash;
slash = strchr (entries[i].device, '/');
if (slash)
*slash = 0;
ret = grub_util_find_root_devices_from_poolname (entries[i].device);
if (slash)
*slash = '/';
if (relroot)
{
if (!slash)
*relroot = xasprintf ("/@%s", entries[i].enc_root);
else if (strchr (slash + 1, '@'))
*relroot = xasprintf ("/%s%s", slash + 1, entries[i].enc_root);
else
*relroot = xasprintf ("/%s@%s", slash + 1, entries[i].enc_root);
}
}
else if (grub_strcmp (entries[i].fstype, "btrfs") == 0)
{
ret = grub_find_root_devices_from_btrfs (dir);
if (relroot)
{
char *ptr;
*relroot = xmalloc (strlen (entries[i].enc_root) +
2 + strlen (dir));
ptr = grub_stpcpy (*relroot, entries[i].enc_root);
if (strlen (dir) > strlen (entries[i].enc_path))
{
while (ptr > *relroot && *(ptr - 1) == '/')
ptr--;
if (dir[strlen (entries[i].enc_path)] != '/')
*ptr++ = '/';
ptr = grub_stpcpy (ptr, dir + strlen (entries[i].enc_path));
}
*ptr = 0;
}
}
if (!ret)
{
ret = xmalloc (2 * sizeof (ret[0]));
ret[0] = strdup (entries[i].device);
ret[1] = 0;
if (relroot)
*relroot = strdup (entries[i].enc_root);
}
free (buf);
free (entries);
fclose (fp);
return ret;
}
free (buf);
free (entries);
fclose (fp);
return NULL;
}
static char *
get_mdadm_uuid (const char *os_dev)
{
char *argv[5];
int fd;
pid_t pid;
FILE *mdadm;
char *buf = NULL;
size_t len = 0;
char *name = NULL;
/* 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 *) os_dev;
argv[4] = NULL;
pid = grub_util_exec_pipe (argv, &fd);
if (!pid)
return NULL;
/* Parent. Read mdadm's output. */
mdadm = fdopen (fd, "r");
if (! mdadm)
{
grub_util_warn (_("Unable to open stream from %s: %s"),
"mdadm", strerror (errno));
goto out;
}
while (getline (&buf, &len, mdadm) > 0)
{
if (strncmp (buf, "MD_UUID=", sizeof ("MD_UUID=") - 1) == 0)
{
char *name_start, *ptri, *ptro;
free (name);
name_start = buf + sizeof ("MD_UUID=") - 1;
ptro = name = xmalloc (strlen (name_start) + 1);
for (ptri = name_start; *ptri && *ptri != '\n' && *ptri != '\r';
ptri++)
if ((*ptri >= '0' && *ptri <= '9')
|| (*ptri >= 'a' && *ptri <= 'f')
|| (*ptri >= 'A' && *ptri <= 'F'))
*ptro++ = *ptri;
*ptro = 0;
}
}
out:
close (fd);
waitpid (pid, NULL, 0);
free (buf);
return name;
}
static int
grub_util_is_imsm (const char *os_dev)
{
int retry;
int is_imsm = 0;
int container_seen = 0;
const char *dev = os_dev;
do
{
char *argv[5];
int fd;
pid_t pid;
FILE *mdadm;
char *buf = NULL;
size_t len = 0;
retry = 0; /* We'll do one more pass if device is part of container */
/* 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 = grub_util_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
&& !container_seen)
{
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;
container_seen = retry = 1;
break;
}
if (strncmp (buf, "MD_METADATA=imsm",
sizeof ("MD_METADATA=imsm") - 1) == 0)
{
is_imsm = 1;
grub_util_info ("%s is imsm", dev);
break;
}
}
free (buf);
close (fd);
waitpid (pid, NULL, 0);
}
while (retry);
if (dev != os_dev)
free ((void *) dev);
return is_imsm;
}
char *
grub_util_part_to_disk (const char *os_dev, struct stat *st,
int *is_part)
{
char *path = xmalloc (PATH_MAX);
if (! realpath (os_dev, path))
return NULL;
if (strncmp ("/dev/", path, 5) == 0)
{
char *p = path + 5;
/* If this is an IDE disk. */
if (strncmp ("ide/", p, 4) == 0)
{
p = strstr (p, "part");
if (p)
{
*is_part = 1;
strcpy (p, "disc");
}
return path;
}
/* If this is a SCSI disk. */
if (strncmp ("scsi/", p, 5) == 0)
{
p = strstr (p, "part");
if (p)
{
*is_part = 1;
strcpy (p, "disc");
}
return path;
}
/* If this is a DAC960 disk. */
if (strncmp ("rd/c", p, 4) == 0)
{
/* /dev/rd/c[0-9]+d[0-9]+(p[0-9]+)? */
p = strchr (p, 'p');
if (p)
{
*is_part = 1;
*p = '\0';
}
return path;
}
/* If this is a Mylex AcceleRAID Array. */
if (strncmp ("rs/c", p, 4) == 0)
{
/* /dev/rd/c[0-9]+d[0-9]+(p[0-9]+)? */
p = strchr (p, 'p');
if (p)
{
*is_part = 1;
*p = '\0';
}
return path;
}
/* If this is a CCISS disk. */
if (strncmp ("cciss/c", p, sizeof ("cciss/c") - 1) == 0)
{
/* /dev/cciss/c[0-9]+d[0-9]+(p[0-9]+)? */
p = strchr (p, 'p');
if (p)
{
*is_part = 1;
*p = '\0';
}
return path;
}
/* If this is an AOE disk. */
if (strncmp ("etherd/e", p, sizeof ("etherd/e") - 1) == 0)
{
/* /dev/etherd/e[0-9]+\.[0-9]+(p[0-9]+)? */
p = strchr (p, 'p');
if (p)
{
*is_part = 1;
*p = '\0';
}
return path;
}
/* If this is a Compaq Intelligent Drive Array. */
if (strncmp ("ida/c", p, sizeof ("ida/c") - 1) == 0)
{
/* /dev/ida/c[0-9]+d[0-9]+(p[0-9]+)? */
p = strchr (p, 'p');
if (p)
{
*is_part = 1;
*p = '\0';
}
return path;
}
/* If this is an I2O disk. */
if (strncmp ("i2o/hd", p, sizeof ("i2o/hd") - 1) == 0)
{
/* /dev/i2o/hd[a-z]([0-9]+)? */
if (p[sizeof ("i2o/hda") - 1])
*is_part = 1;
p[sizeof ("i2o/hda") - 1] = '\0';
return path;
}
/* If this is a MultiMediaCard (MMC). */
if (strncmp ("mmcblk", p, sizeof ("mmcblk") - 1) == 0)
{
/* /dev/mmcblk[0-9]+(p[0-9]+)? */
p = strchr (p, 'p');
if (p)
{
*is_part = 1;
*p = '\0';
}
return path;
}
if (strncmp ("md", p, 2) == 0
&& p[2] >= '0' && p[2] <= '9')
{
char *ptr = p + 2;
while (*ptr >= '0' && *ptr <= '9')
ptr++;
if (*ptr)
*is_part = 1;
*ptr = 0;
return path;
}
if (strncmp ("nbd", p, 3) == 0
&& p[3] >= '0' && p[3] <= '9')
{
char *ptr = p + 3;
while (*ptr >= '0' && *ptr <= '9')
ptr++;
if (*ptr)
*is_part = 1;
*ptr = 0;
return path;
}
/* If this is an IDE, SCSI or Virtio disk. */
if (strncmp ("vdisk", p, 5) == 0
&& p[5] >= 'a' && p[5] <= 'z')
{
/* /dev/vdisk[a-z][0-9]* */
if (p[6])
*is_part = 1;
p[6] = '\0';
return path;
}
if ((strncmp ("hd", p, 2) == 0
|| strncmp ("vd", p, 2) == 0
|| strncmp ("sd", p, 2) == 0)
&& p[2] >= 'a' && p[2] <= 'z')
{
char *pp = p + 2;
while (*pp >= 'a' && *pp <= 'z')
pp++;
if (*pp)
*is_part = 1;
/* /dev/[hsv]d[a-z]+[0-9]* */
*pp = '\0';
return path;
}
/* If this is a Xen virtual block device. */
if ((strncmp ("xvd", p, 3) == 0) && p[3] >= 'a' && p[3] <= 'z')
{
char *pp = p + 3;
while (*pp >= 'a' && *pp <= 'z')
pp++;
if (*pp)
*is_part = 1;
/* /dev/xvd[a-z]+[0-9]* */
*pp = '\0';
return path;
}
}
return path;
}
char *
grub_util_get_raid_grub_dev (const char *os_dev)
{
char *grub_dev = NULL;
if (os_dev[7] == '_' && os_dev[8] == 'd')
{
/* This a partitionable RAID device of the form /dev/md_dNNpMM. */
char *p, *q;
p = strdup (os_dev + sizeof ("/dev/md_d") - 1);
q = strchr (p, 'p');
if (q)
*q = ',';
grub_dev = xasprintf ("md%s", p);
free (p);
}
else if (os_dev[7] == '/' && os_dev[8] == 'd')
{
/* This a partitionable RAID device of the form /dev/md/dNNpMM. */
char *p, *q;
p = strdup (os_dev + sizeof ("/dev/md/d") - 1);
q = strchr (p, 'p');
if (q)
*q = ',';
grub_dev = xasprintf ("md%s", p);
free (p);
}
else if (os_dev[7] >= '0' && os_dev[7] <= '9')
{
char *p , *q;
p = strdup (os_dev + sizeof ("/dev/md") - 1);
q = strchr (p, 'p');
if (q)
*q = ',';
grub_dev = xasprintf ("md%s", p);
free (p);
}
else if (os_dev[7] == '/' && os_dev[8] >= '0' && os_dev[8] <= '9')
{
char *p , *q;
p = strdup (os_dev + sizeof ("/dev/md/") - 1);
q = strchr (p, 'p');
if (q)
*q = ',';
grub_dev = xasprintf ("md%s", p);
free (p);
}
else if (os_dev[7] == '/')
{
/* mdraid 1.x with a free name. */
char *p , *q;
p = strdup (os_dev + sizeof ("/dev/md/") - 1);
q = strchr (p, 'p');
if (q)
*q = ',';
grub_dev = xasprintf ("md/%s", p);
free (p);
}
else
grub_util_error (_("unknown kind of RAID device `%s'"), os_dev);
{
char *mdadm_name = get_mdadm_uuid (os_dev);
if (mdadm_name)
{
const char *q;
for (q = os_dev + strlen (os_dev) - 1; q >= os_dev
&& grub_isdigit (*q); q--);
if (q >= os_dev && *q == 'p')
{
free (grub_dev);
grub_dev = xasprintf ("mduuid/%s,%s", mdadm_name, q + 1);
goto done;
}
free (grub_dev);
grub_dev = xasprintf ("mduuid/%s", mdadm_name);
done:
free (mdadm_name);
}
}
return grub_dev;
}
enum grub_dev_abstraction_types
grub_util_get_dev_abstraction_os (const char *os_dev)
{
#ifndef HAVE_DEVICE_MAPPER
if ((strncmp ("/dev/mapper/", os_dev, 12) == 0))
return GRUB_DEV_ABSTRACTION_LVM;
#endif
/* Check for RAID. */
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;
return GRUB_DEV_ABSTRACTION_NONE;
}
int
grub_util_pull_device_os (const char *os_dev,
enum grub_dev_abstraction_types ab)
{
switch (ab)
{
case GRUB_DEV_ABSTRACTION_RAID:
{
char **devicelist = grub_util_raid_getmembers (os_dev, 0);
int i;
for (i = 0; devicelist[i];i++)
{
grub_util_pull_device (devicelist[i]);
free (devicelist[i]);
}
free (devicelist);
}
return 1;
default:
return 0;
}
}
char *
grub_util_get_grub_dev_os (const char *os_dev)
{
char *grub_dev = NULL;
switch (grub_util_get_dev_abstraction (os_dev))
{
/* Fallback for non-devmapper build. In devmapper-builds LVM is handled
in rub_util_get_devmapper_grub_dev and this point isn't reached.
*/
case GRUB_DEV_ABSTRACTION_LVM:
{
unsigned short len;
grub_size_t offset = sizeof (LVM_DEV_MAPPER_STRING) - 1;
len = strlen (os_dev) - offset + 1;
grub_dev = xmalloc (len + sizeof ("lvm/"));
grub_memcpy (grub_dev, "lvm/", sizeof ("lvm/") - 1);
grub_memcpy (grub_dev + sizeof ("lvm/") - 1, os_dev + offset, len);
}
break;
case GRUB_DEV_ABSTRACTION_RAID:
grub_dev = grub_util_get_raid_grub_dev (os_dev);
break;
default: /* GRUB_DEV_ABSTRACTION_NONE */
break;
}
return grub_dev;
}

0
grub-core/kern/emu/hostdisk_linux.c → grub-core/osdep/linux/hostdisk.c
View file

5
grub-core/osdep/random.c Normal file
View file

@ -0,0 +1,5 @@
#if defined (_WIN32) || defined (__CYGWIN__)
#include "windows/random.c"
#else
#include "unix/random.c"
#endif

119
grub-core/osdep/sun/getroot.c Normal file
View file

@ -0,0 +1,119 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1999,2000,2001,2002,2003,2006,2007,2008,2009,2010,2011,2012,2013 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-util.h>
#include <config.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <assert.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <dirent.h>
#include <errno.h>
#include <error.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#ifdef HAVE_LIMITS_H
#include <limits.h>
#endif
#include <grub/types.h>
#include <grub/util/misc.h>
#include <grub/util/lvm.h>
#include <grub/mm.h>
#include <grub/misc.h>
#include <grub/emu/misc.h>
#include <grub/emu/hostdisk.h>
#include <grub/emu/getroot.h>
#include <sys/wait.h>
# include <sys/types.h>
# include <sys/mkdev.h>
# include <sys/dkio.h>
char *
grub_util_part_to_disk (const char *os_dev,
struct stat *st __attribute__ ((unused)),
int *is_part)
{
char *colon = grub_strrchr (os_dev, ':');
if (grub_memcmp (os_dev, "/devices", sizeof ("/devices") - 1) == 0
&& colon)
{
char *ret = xmalloc (colon - os_dev + sizeof (":q,raw"));
if (grub_strcmp (colon, ":q,raw") != 0)
*is_part = 1;
grub_memcpy (ret, os_dev, colon - os_dev);
grub_memcpy (ret + (colon - os_dev), ":q,raw", sizeof (":q,raw"));
return ret;
}
else
return xstrdup (os_dev);
}
enum grub_dev_abstraction_types
grub_util_get_dev_abstraction_os (const char *os_dev __attribute__((unused)))
{
return GRUB_DEV_ABSTRACTION_NONE;
}
int
grub_util_pull_device_os (const char *os_dev __attribute__ ((unused)),
enum grub_dev_abstraction_types ab __attribute__ ((unused)))
{
return 0;
}
char *
grub_util_get_grub_dev_os (const char *os_dev __attribute__ ((unused)))
{
return NULL;
}
grub_disk_addr_t
grub_util_find_partition_start_os (const char *dev)
{
int fd;
struct extpart_info pinfo;
fd = open (dev, O_RDONLY);
if (fd == -1)
{
grub_error (GRUB_ERR_BAD_DEVICE, N_("cannot open `%s': %s"),
dev, strerror (errno));
return 0;
}
if (ioctl (fd, DKIOCEXTPARTINFO, &pinfo))
{
grub_error (GRUB_ERR_BAD_DEVICE,
"cannot get disk geometry of `%s'", dev);
close (fd);
return 0;
}
close (fd);
return pinfo.p_start;
}

0
grub-core/kern/emu/hostdisk_sun.c → grub-core/osdep/sun/hostdisk.c
View file

967
grub-core/osdep/unix/getroot.c Normal file
View file

@ -0,0 +1,967 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1999,2000,2001,2002,2003,2006,2007,2008,2009,2010,2011 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-util.h>
#include <config.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <assert.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <dirent.h>
#include <errno.h>
#include <error.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#ifdef HAVE_LIMITS_H
#include <limits.h>
#endif
#include <grub/util/misc.h>
#include <grub/util/lvm.h>
#include <grub/cryptodisk.h>
#include <grub/i18n.h>
#if !defined (__MINGW32__) && !defined (__CYGWIN__) && !defined (__AROS__)
#ifdef __linux__
#include <sys/ioctl.h> /* ioctl */
#include <sys/mount.h>
#ifndef MAJOR
# ifndef MINORBITS
# define MINORBITS 8
# endif /* ! MINORBITS */
# define MAJOR(dev) ((unsigned) ((dev) >> MINORBITS))
#endif /* ! MAJOR */
#ifndef FLOPPY_MAJOR
# define FLOPPY_MAJOR 2
#endif /* ! FLOPPY_MAJOR */
#endif
#include <sys/types.h>
#if defined(HAVE_LIBZFS) && defined(HAVE_LIBNVPAIR)
# include <grub/util/libzfs.h>
# include <grub/util/libnvpair.h>
#endif
#include <grub/mm.h>
#include <grub/misc.h>
#include <grub/emu/misc.h>
#include <grub/emu/hostdisk.h>
#include <grub/emu/getroot.h>
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
# define MAJOR(dev) major(dev)
# define FLOPPY_MAJOR 2
#endif
#if defined (__FreeBSD__) || defined (__FreeBSD_kernel__)
#include <sys/mount.h>
#endif
#if defined(__NetBSD__) || defined(__OpenBSD__)
# include <sys/ioctl.h>
# include <sys/disklabel.h> /* struct disklabel */
# include <sys/disk.h> /* struct dkwedge_info */
#include <sys/param.h>
#include <sys/mount.h>
#endif /* defined(__NetBSD__) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__) */
#if defined(__NetBSD__) || defined(__OpenBSD__)
# define MAJOR(dev) major(dev)
# ifdef HAVE_GETRAWPARTITION
# include <util.h> /* getrawpartition */
# endif /* HAVE_GETRAWPARTITION */
#if defined(__NetBSD__)
# include <sys/fdio.h>
#endif
# ifndef FLOPPY_MAJOR
# define FLOPPY_MAJOR 2
# endif /* ! FLOPPY_MAJOR */
# ifndef RAW_FLOPPY_MAJOR
# define RAW_FLOPPY_MAJOR 9
# endif /* ! RAW_FLOPPY_MAJOR */
#endif /* defined(__NetBSD__) */
#include <sys/types.h>
#include <sys/wait.h>
static void
strip_extra_slashes (char *dir)
{
char *p = dir;
while ((p = strchr (p, '/')) != 0)
{
if (p[1] == '/')
{
memmove (p, p + 1, strlen (p));
continue;
}
else if (p[1] == '\0')
{
if (p > dir)
p[0] = '\0';
break;
}
p++;
}
}
static char *
xgetcwd (void)
{
size_t size = 10;
char *path;
path = xmalloc (size);
while (! getcwd (path, size))
{
size <<= 1;
path = xrealloc (path, size);
}
return path;
}
pid_t
grub_util_exec_pipe (char **argv, int *fd)
{
int mdadm_pipe[2];
pid_t mdadm_pid;
*fd = 0;
if (pipe (mdadm_pipe) < 0)
{
grub_util_warn (_("Unable to create pipe: %s"),
strerror (errno));
return 0;
}
mdadm_pid = fork ();
if (mdadm_pid < 0)
grub_util_error (_("Unable to fork: %s"), strerror (errno));
else if (mdadm_pid == 0)
{
/* Child. */
/* Close fd's. */
grub_util_devmapper_cleanup ();
grub_diskfilter_fini ();
/* Ensure child is not localised. */
setenv ("LC_ALL", "C", 1);
close (mdadm_pipe[0]);
dup2 (mdadm_pipe[1], STDOUT_FILENO);
close (mdadm_pipe[1]);
execvp (argv[0], argv);
exit (127);
}
else
{
close (mdadm_pipe[1]);
*fd = mdadm_pipe[0];
return mdadm_pid;
}
}
#if !defined (__GNU__)
char **
grub_util_find_root_devices_from_poolname (char *poolname)
{
char **devices = 0;
size_t ndevices = 0;
size_t devices_allocated = 0;
#if defined(HAVE_LIBZFS) && defined(HAVE_LIBNVPAIR)
zpool_handle_t *zpool;
libzfs_handle_t *libzfs;
nvlist_t *config, *vdev_tree;
nvlist_t **children;
unsigned int nvlist_count;
unsigned int i;
char *device = 0;
libzfs = grub_get_libzfs_handle ();
if (! libzfs)
return NULL;
zpool = zpool_open (libzfs, poolname);
config = zpool_get_config (zpool, NULL);
if (nvlist_lookup_nvlist (config, "vdev_tree", &vdev_tree) != 0)
error (1, errno, "nvlist_lookup_nvlist (\"vdev_tree\")");
if (nvlist_lookup_nvlist_array (vdev_tree, "children", &children, &nvlist_count) != 0)
error (1, errno, "nvlist_lookup_nvlist_array (\"children\")");
assert (nvlist_count > 0);
while (nvlist_lookup_nvlist_array (children[0], "children",
&children, &nvlist_count) == 0)
assert (nvlist_count > 0);
for (i = 0; i < nvlist_count; i++)
{
if (nvlist_lookup_string (children[i], "path", &device) != 0)
error (1, errno, "nvlist_lookup_string (\"path\")");
struct stat st;
if (stat (device, &st) == 0)
{
#ifdef __sun__
if (grub_memcmp (device, "/dev/dsk/", sizeof ("/dev/dsk/") - 1)
== 0)
device = xasprintf ("/dev/rdsk/%s",
device + sizeof ("/dev/dsk/") - 1);
else if (grub_memcmp (device, "/devices", sizeof ("/devices") - 1)
== 0
&& grub_memcmp (device + strlen (device) - 4,
",raw", 4) != 0)
device = xasprintf ("%s,raw", device);
else
#endif
device = xstrdup (device);
if (ndevices >= devices_allocated)
{
devices_allocated = 2 * (devices_allocated + 8);
devices = xrealloc (devices, sizeof (devices[0])
* devices_allocated);
}
devices[ndevices++] = device;
}
device = NULL;
}
zpool_close (zpool);
#else
FILE *fp;
int ret;
char *line;
size_t len;
int st;
char name[PATH_MAX + 1], state[257], readlen[257], writelen[257];
char cksum[257], notes[257];
unsigned int dummy;
char *argv[4];
pid_t pid;
int fd;
/* execvp has inconvenient types, hence the casts. None of these
strings will actually be modified. */
argv[0] = (char *) "zpool";
argv[1] = (char *) "status";
argv[2] = (char *) poolname;
argv[3] = NULL;
pid = grub_util_exec_pipe (argv, &fd);
if (!pid)
return NULL;
fp = fdopen (fd, "r");
if (!fp)
{
grub_util_warn (_("Unable to open stream from %s: %s"),
"zpool", strerror (errno));
goto out;
}
st = 0;
while (1)
{
line = NULL;
ret = getline (&line, &len, fp);
if (ret == -1)
break;
if (sscanf (line, " %s %256s %256s %256s %256s %256s",
name, state, readlen, writelen, cksum, notes) >= 5)
switch (st)
{
case 0:
if (!strcmp (name, "NAME")
&& !strcmp (state, "STATE")
&& !strcmp (readlen, "READ")
&& !strcmp (writelen, "WRITE")
&& !strcmp (cksum, "CKSUM"))
st++;
break;
case 1:
{
char *ptr = line;
while (1)
{
if (strncmp (ptr, poolname, strlen (poolname)) == 0
&& grub_isspace(ptr[strlen (poolname)]))
st++;
if (!grub_isspace (*ptr))
break;
ptr++;
}
}
break;
case 2:
if (strcmp (name, "mirror") && !sscanf (name, "mirror-%u", &dummy)
&& !sscanf (name, "raidz%u", &dummy)
&& !sscanf (name, "raidz1%u", &dummy)
&& !sscanf (name, "raidz2%u", &dummy)
&& !sscanf (name, "raidz3%u", &dummy)
&& !strcmp (state, "ONLINE"))
{
if (ndevices >= devices_allocated)
{
devices_allocated = 2 * (devices_allocated + 8);
devices = xrealloc (devices, sizeof (devices[0])
* devices_allocated);
}
if (name[0] == '/')
devices[ndevices++] = xstrdup (name);
else
devices[ndevices++] = xasprintf ("/dev/%s", name);
}
break;
}
free (line);
}
out:
close (fd);
waitpid (pid, NULL, 0);
#endif
if (devices)
{
if (ndevices >= devices_allocated)
{
devices_allocated = 2 * (devices_allocated + 8);
devices = xrealloc (devices, sizeof (devices[0])
* devices_allocated);
}
devices[ndevices++] = 0;
}
return devices;
}
static char **
find_root_devices_from_libzfs (const char *dir)
{
char **devices = NULL;
char *poolname;
char *poolfs;
grub_find_zpool_from_dir (dir, &poolname, &poolfs);
if (! poolname)
return NULL;
devices = grub_util_find_root_devices_from_poolname (poolname);
free (poolname);
if (poolfs)
free (poolfs);
return devices;
}
char *
grub_find_device (const char *dir, dev_t dev)
{
DIR *dp;
char *saved_cwd;
struct dirent *ent;
if (! dir)
dir = "/dev";
dp = opendir (dir);
if (! dp)
return 0;
saved_cwd = xgetcwd ();
grub_util_info ("changing current directory to %s", dir);
if (chdir (dir) < 0)
{
free (saved_cwd);
closedir (dp);
return 0;
}
while ((ent = readdir (dp)) != 0)
{
struct stat st;
/* Avoid:
- dotfiles (like "/dev/.tmp.md0") since they could be duplicates.
- dotdirs (like "/dev/.static") since they could contain duplicates. */
if (ent->d_name[0] == '.')
continue;
if (lstat (ent->d_name, &st) < 0)
/* Ignore any error. */
continue;
if (S_ISLNK (st.st_mode)) {
#ifdef __linux__
if (strcmp (dir, "mapper") == 0 || strcmp (dir, "/dev/mapper") == 0) {
/* Follow symbolic links under /dev/mapper/; the canonical name
may be something like /dev/dm-0, but the names under
/dev/mapper/ are more human-readable and so we prefer them if
we can get them. */
if (stat (ent->d_name, &st) < 0)
continue;
} else
#endif /* __linux__ */
/* Don't follow other symbolic links. */
continue;
}
if (S_ISDIR (st.st_mode))
{
/* Find it recursively. */
char *res;
res = grub_find_device (ent->d_name, dev);
if (res)
{
if (chdir (saved_cwd) < 0)
grub_util_error ("%s",
_("cannot restore the original directory"));
free (saved_cwd);
closedir (dp);
return res;
}
}
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__APPLE__)
if (S_ISCHR (st.st_mode) && st.st_rdev == dev)
#else
if (S_ISBLK (st.st_mode) && st.st_rdev == dev)
#endif
{
#ifdef __linux__
/* Skip device names like /dev/dm-0, which are short-hand aliases
to more descriptive device names, e.g. those under /dev/mapper */
if (ent->d_name[0] == 'd' &&
ent->d_name[1] == 'm' &&
ent->d_name[2] == '-' &&
ent->d_name[3] >= '0' &&
ent->d_name[3] <= '9')
continue;
#endif
/* Found! */
char *res;
char *cwd;
#if defined(__NetBSD__) || defined(__OpenBSD__)
/* Convert this block device to its character (raw) device. */
const char *template = "%s/r%s";
#else
/* Keep the device name as it is. */
const char *template = "%s/%s";
#endif
cwd = xgetcwd ();
res = xmalloc (strlen (cwd) + strlen (ent->d_name) + 3);
sprintf (res, template, cwd, ent->d_name);
strip_extra_slashes (res);
free (cwd);
/* /dev/root is not a real block device keep looking, takes care
of situation where root filesystem is on the same partition as
grub files */
if (strcmp(res, "/dev/root") == 0)
{
free (res);
continue;
}
if (chdir (saved_cwd) < 0)
grub_util_error ("%s", _("cannot restore the original directory"));
free (saved_cwd);
closedir (dp);
return res;
}
}
if (chdir (saved_cwd) < 0)
grub_util_error ("%s", _("cannot restore the original directory"));
free (saved_cwd);
closedir (dp);
return 0;
}
char **
grub_guess_root_devices (const char *dir)
{
char **os_dev = NULL;
struct stat st;
dev_t dev;
#ifdef __linux__
if (!os_dev)
os_dev = grub_find_root_devices_from_mountinfo (dir, NULL);
#endif /* __linux__ */
if (!os_dev)
os_dev = find_root_devices_from_libzfs (dir);
if (os_dev)
{
char **cur;
for (cur = os_dev; *cur; cur++)
{
char *tmp = *cur;
int root, dm;
if (strcmp (*cur, "/dev/root") == 0
|| strncmp (*cur, "/dev/dm-", sizeof ("/dev/dm-") - 1) == 0)
*cur = tmp;
else
{
*cur = canonicalize_file_name (tmp);
if (*cur == NULL)
grub_util_error (_("failed to get canonical path of `%s'"), tmp);
free (tmp);
}
root = (strcmp (*cur, "/dev/root") == 0);
dm = (strncmp (*cur, "/dev/dm-", sizeof ("/dev/dm-") - 1) == 0);
if (!dm && !root)
continue;
if (stat (*cur, &st) < 0)
break;
free (*cur);
dev = st.st_rdev;
*cur = grub_find_device (dm ? "/dev/mapper" : "/dev", dev);
}
if (!*cur)
return os_dev;
for (cur = os_dev; *cur; cur++)
free (*cur);
free (os_dev);
os_dev = 0;
}
if (stat (dir, &st) < 0)
grub_util_error (_("cannot stat `%s': %s"), dir, strerror (errno));
dev = st.st_dev;
os_dev = xmalloc (2 * sizeof (os_dev[0]));
/* This might be truly slow, but is there any better way? */
os_dev[0] = grub_find_device ("/dev", dev);
if (!os_dev[0])
{
free (os_dev);
return 0;
}
os_dev[1] = 0;
return os_dev;
}
#endif
void
grub_util_pull_lvm_by_command (const char *os_dev)
{
char *argv[8];
int fd;
pid_t pid;
FILE *mdadm;
char *buf = NULL;
size_t len = 0;
char *vgname = NULL;
const char *iptr;
char *optr;
char *vgid = NULL;
grub_size_t vgidlen = 0;
vgid = grub_util_get_vg_uuid (os_dev);
if (vgid)
vgidlen = grub_strlen (vgid);
if (!vgid)
{
if (strncmp (os_dev, LVM_DEV_MAPPER_STRING,
sizeof (LVM_DEV_MAPPER_STRING) - 1)
!= 0)
return;
vgname = xmalloc (strlen (os_dev + sizeof (LVM_DEV_MAPPER_STRING) - 1) + 1);
for (iptr = os_dev + sizeof (LVM_DEV_MAPPER_STRING) - 1, optr = vgname; *iptr; )
if (*iptr != '-')
*optr++ = *iptr++;
else if (iptr[0] == '-' && iptr[1] == '-')
{
iptr += 2;
*optr++ = '-';
}
else
break;
*optr = '\0';
}
/* execvp has inconvenient types, hence the casts. None of these
strings will actually be modified. */
/* by default PV name is left aligned in 10 character field, meaning that
we do not know where name ends. Using dummy --separator disables
alignment. We have a single field, so separator itself is not output */
argv[0] = (char *) "vgs";
argv[1] = (char *) "--options";
if (vgid)
argv[2] = (char *) "vg_uuid,pv_name";
else
argv[2] = (char *) "pv_name";
argv[3] = (char *) "--noheadings";
argv[4] = (char *) "--separator";
argv[5] = (char *) ":";
argv[6] = vgname;
argv[7] = NULL;
pid = grub_util_exec_pipe (argv, &fd);
free (vgname);
if (!pid)
return;
/* Parent. Read mdadm's output. */
mdadm = fdopen (fd, "r");
if (! mdadm)
{
grub_util_warn (_("Unable to open stream from %s: %s"),
"vgs", strerror (errno));
goto out;
}
while (getline (&buf, &len, mdadm) > 0)
{
char *ptr;
/* LVM adds two spaces as standard prefix */
for (ptr = buf; ptr < buf + 2 && *ptr == ' '; ptr++);
if (vgid && (grub_strncmp (vgid, ptr, vgidlen) != 0
|| ptr[vgidlen] != ':'))
continue;
if (vgid)
ptr += vgidlen + 1;
if (*ptr == '\0')
continue;
*(ptr + strlen (ptr) - 1) = '\0';
grub_util_pull_device (ptr);
}
out:
close (fd);
waitpid (pid, NULL, 0);
free (buf);
}
/* ZFS has similar problems to those of btrfs (see above). */
void
grub_find_zpool_from_dir (const char *dir, char **poolname, char **poolfs)
{
char *slash;
*poolname = *poolfs = NULL;
#if defined(HAVE_STRUCT_STATFS_F_FSTYPENAME) && defined(HAVE_STRUCT_STATFS_F_MNTFROMNAME)
/* FreeBSD and GNU/kFreeBSD. */
{
struct statfs mnt;
if (statfs (dir, &mnt) != 0)
return;
if (strcmp (mnt.f_fstypename, "zfs") != 0)
return;
*poolname = xstrdup (mnt.f_mntfromname);
}
#elif defined(HAVE_GETEXTMNTENT)
/* Solaris. */
{
struct stat st;
struct extmnttab mnt;
if (stat (dir, &st) != 0)
return;
FILE *mnttab = fopen ("/etc/mnttab", "r");
if (! mnttab)
return;
while (getextmntent (mnttab, &mnt, sizeof (mnt)) == 0)
{
if (makedev (mnt.mnt_major, mnt.mnt_minor) == st.st_dev
&& !strcmp (mnt.mnt_fstype, "zfs"))
{
*poolname = xstrdup (mnt.mnt_special);
break;
}
}
fclose (mnttab);
}
#endif
if (! *poolname)
return;
slash = strchr (*poolname, '/');
if (slash)
{
*slash = '\0';
*poolfs = xstrdup (slash + 1);
}
else
*poolfs = xstrdup ("");
}
/* This function never prints trailing slashes (so that its output
can be appended a slash unconditionally). */
char *
grub_make_system_path_relative_to_its_root (const char *path)
{
struct stat st;
char *p, *buf, *buf2, *buf3, *ret;
uintptr_t offset = 0;
dev_t num;
size_t len;
char *poolfs = NULL;
/* canonicalize. */
p = canonicalize_file_name (path);
if (p == NULL)
grub_util_error (_("failed to get canonical path of `%s'"), path);
/* For ZFS sub-pool filesystems, could be extended to others (btrfs?). */
{
char *dummy;
grub_find_zpool_from_dir (p, &dummy, &poolfs);
}
len = strlen (p) + 1;
buf = xstrdup (p);
free (p);
if (stat (buf, &st) < 0)
grub_util_error (_("cannot stat `%s': %s"), buf, strerror (errno));
buf2 = xstrdup (buf);
num = st.st_dev;
/* This loop sets offset to the number of chars of the root
directory we're inspecting. */
while (1)
{
p = strrchr (buf, '/');
if (p == NULL)
/* This should never happen. */
grub_util_error ("%s",
/* TRANSLATORS: canonical pathname is the
complete one e.g. /etc/fstab. It has
to contain `/' normally, if it doesn't
we're in trouble and throw this error. */
_("no `/' in canonical filename"));
if (p != buf)
*p = 0;
else
*++p = 0;
if (stat (buf, &st) < 0)
grub_util_error (_("cannot stat `%s': %s"), buf, strerror (errno));
/* buf is another filesystem; we found it. */
if (st.st_dev != num)
{
/* offset == 0 means path given is the mount point.
This works around special-casing of "/" in Un*x. This function never
prints trailing slashes (so that its output can be appended a slash
unconditionally). Each slash in is considered a preceding slash, and
therefore the root directory is an empty string. */
if (offset == 0)
{
free (buf);
#ifdef __linux__
{
char *bind;
grub_free (grub_find_root_devices_from_mountinfo (buf2, &bind));
if (bind && bind[0] && bind[1])
{
buf3 = bind;
goto parsedir;
}
grub_free (bind);
}
#endif
free (buf2);
if (poolfs)
return xasprintf ("/%s/@", poolfs);
return xstrdup ("");
}
else
break;
}
offset = p - buf;
/* offset == 1 means root directory. */
if (offset == 1)
{
/* Include leading slash. */
offset = 0;
break;
}
}
free (buf);
buf3 = xstrdup (buf2 + offset);
buf2[offset] = 0;
#ifdef __linux__
{
char *bind;
grub_free (grub_find_root_devices_from_mountinfo (buf2, &bind));
if (bind && bind[0] && bind[1])
{
char *temp = buf3;
buf3 = grub_xasprintf ("%s%s%s", bind, buf3[0] == '/' ?"":"/", buf3);
grub_free (temp);
}
grub_free (bind);
}
#endif
free (buf2);
#ifdef __linux__
parsedir:
#endif
/* Remove trailing slashes, return empty string if root directory. */
len = strlen (buf3);
while (len > 0 && buf3[len - 1] == '/')
{
buf3[len - 1] = '\0';
len--;
}
if (poolfs)
{
ret = xasprintf ("/%s/@%s", poolfs, buf3);
free (buf3);
}
else
ret = buf3;
return ret;
}
int
grub_util_biosdisk_is_floppy (grub_disk_t disk)
{
struct stat st;
int fd;
const char *dname;
dname = grub_util_biosdisk_get_osdev (disk);
if (!dname)
return 0;
fd = open (dname, O_RDONLY);
/* Shouldn't happen. */
if (fd == -1)
return 0;
/* Shouldn't happen either. */
if (fstat (fd, &st) < 0)
{
close (fd);
return 0;
}
close (fd);
#if defined(__NetBSD__)
if (major(st.st_rdev) == RAW_FLOPPY_MAJOR)
return 1;
#endif
#if defined(FLOPPY_MAJOR)
if (major(st.st_rdev) == FLOPPY_MAJOR)
#else
/* Some kernels (e.g. kFreeBSD) don't have a static major number
for floppies, but they still use a "fd[0-9]" pathname. */
if (dname[5] == 'f'
&& dname[6] == 'd'
&& dname[7] >= '0'
&& dname[7] <= '9')
#endif
return 1;
return 0;
}
const char *
grub_util_check_block_device (const char *blk_dev)
{
struct stat st;
if (stat (blk_dev, &st) < 0)
grub_util_error (_("cannot stat `%s': %s"), blk_dev,
strerror (errno));
if (S_ISBLK (st.st_mode))
return (blk_dev);
else
return 0;
}
const char *
grub_util_check_char_device (const char *blk_dev)
{
struct stat st;
if (stat (blk_dev, &st) < 0)
grub_util_error (_("cannot stat `%s': %s"), blk_dev, strerror (errno));
if (S_ISCHR (st.st_mode))
return (blk_dev);
else
return 0;
}
#else
void
grub_util_pull_lvm_by_command (const char *os_dev __attribute__ ((unused)))
{
}
#endif

0
grub-core/kern/emu/hostdisk_unix.c → grub-core/osdep/unix/hostdisk.c
View file

53
grub-core/osdep/unix/random.c Normal file
View file

@ -0,0 +1,53 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1992-1999,2001,2003,2004,2005,2009,2010,2011,2012,2013 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 <grub/types.h>
#include <grub/crypto.h>
#include <grub/auth.h>
#include <grub/emu/misc.h>
#include <grub/util/misc.h>
#include <grub/i18n.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int
grub_get_random (void *out, grub_size_t len)
{
#if ! defined (__linux__) && ! defined (__FreeBSD__) && ! defined (__FreeBSD_kernel__) && ! defined (__OpenBSD__) && !defined (__GNU__) && ! defined (_WIN32) && !defined(__CYGWIN__) && !defined (__NetBSD__) && !defined (__APPLE__) && !defined(__sun__)
/* TRANSLATORS: The generator might still be secure just GRUB isn't sure about it. */
printf ("%s", _("WARNING: your random generator isn't known to be secure\n"));
#warning "your random generator isn't known to be secure"
#endif
FILE *f;
size_t rd;
f = fopen ("/dev/urandom", "rb");
if (!f)
return 1;
rd = fread (out, 1, len, f);
fclose (f);
if (rd != len)
return 1;
return 0;
}

346
grub-core/osdep/windows/getroot.c Normal file
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@ -0,0 +1,346 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1999,2000,2001,2002,2003,2006,2007,2008,2009,2010,2011,2012,2013 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-util.h>
#include <config.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <assert.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <dirent.h>
#include <errno.h>
#include <error.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#ifdef HAVE_LIMITS_H
#include <limits.h>
#endif
#include <grub/types.h>
#include <grub/util/misc.h>
#include <grub/util/lvm.h>
#include <grub/mm.h>
#include <grub/misc.h>
#include <grub/emu/misc.h>
#include <grub/emu/hostdisk.h>
#include <grub/emu/getroot.h>
#include <grub/charset.h>
#include <grub/util/windows.h>
#include <windows.h>
#include <winioctl.h>
char *
grub_util_tchar_to_utf8 (LPCTSTR in)
{
#if SIZEOF_TCHAR == 1
return xstrdup (path);
#elif SIZEOF_TCHAR == 2
size_t ssz;
for (ssz = 0; in[ssz]; ssz++);
size_t tsz = GRUB_MAX_UTF8_PER_UTF16 * ssz + 1;
grub_uint8_t *ret = xmalloc (tsz);
*grub_utf16_to_utf8 (ret, in, ssz) = '\0';
return (char *) ret;
#else
#error "Unsupported TCHAR size"
#endif
}
#if SIZEOF_TCHAR == 1
#define tcsnicmp strncasecmp
#define tclen strlen
#elif SIZEOF_TCHAR == 2
#define tcsnicmp wcsnicmp
#define tclen wcslen
#endif
char **
grub_guess_root_devices (const char *dir)
{
char **os_dev = NULL;
TCHAR *dirwindows, *mntpointwindows;
TCHAR *ptr;
TCHAR volumename[100];
size_t mntpointwindows_sz;
dirwindows = grub_util_get_windows_path (dir);
if (!dirwindows)
return 0;
mntpointwindows_sz = strlen (dir) * 2 + 1;
mntpointwindows = xmalloc ((mntpointwindows_sz + 1) * sizeof (mntpointwindows[0]));
if (!GetVolumePathName (dirwindows,
mntpointwindows,
mntpointwindows_sz))
{
free (dirwindows);
free (mntpointwindows);
return 0;
}
if (!mntpointwindows[0])
{
free (dirwindows);
free (mntpointwindows);
return 0;
}
for (ptr = mntpointwindows; *ptr; ptr++);
if (*(ptr - 1) != '\\')
{
*ptr = '\\';
*(ptr + 1) = '\0';
}
if (!GetVolumeNameForVolumeMountPoint (mntpointwindows,
volumename,
ARRAY_SIZE (volumename)))
{
free (dirwindows);
free (mntpointwindows);
return 0;
}
os_dev = xmalloc (2 * sizeof (os_dev[0]));
for (ptr = volumename; *ptr; ptr++);
while (ptr > volumename && *(ptr - 1) == '\\')
*--ptr = '\0';
os_dev[0] = grub_util_tchar_to_utf8 (volumename);
free (dirwindows);
free (mntpointwindows);
if (!os_dev[0])
{
free (os_dev);
return 0;
}
os_dev[1] = 0;
return os_dev;
}
char *
grub_util_part_to_disk (const char *os_dev,
struct stat *st __attribute__ ((unused)),
int *is_part)
{
HANDLE hd;
LPTSTR name = grub_util_get_windows_path (os_dev);
VOLUME_DISK_EXTENTS exts;
DWORD extsbytes;
char *ret;
if (((name[0] == '/') || (name[0] == '\\')) &&
((name[1] == '/') || (name[1] == '\\')) &&
((name[2] == '.') || (name[2] == '?')) &&
((name[3] == '/') || (name[3] == '\\'))
&& (tcsnicmp (name + 4, TEXT("PhysicalDrive"), sizeof ("PhysicalDrive") - 1) == 0
|| tcsnicmp (name + 4, TEXT("Harddisk"), sizeof ("Harddisk") - 1) == 0
|| ((name[4] == 'A' || name[4] == 'a' || name[4] == 'B' || name[4] == 'b')
&& name[5] == ':' && name[6] == '\0')))
{
grub_util_info ("Matches full disk pattern");
ret = grub_util_tchar_to_utf8 (name);
free (name);
return ret;
}
hd = CreateFile (name, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE,
0, OPEN_EXISTING, 0, 0);
if (hd == INVALID_HANDLE_VALUE)
{
grub_util_info ("CreateFile failed");
ret = grub_util_tchar_to_utf8 (name);
free (name);
return ret;
}
if (!DeviceIoControl(hd, IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS,
NULL, 0, &exts, sizeof (exts), &extsbytes, NULL))
{
grub_util_info ("IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS failed");
ret = grub_util_tchar_to_utf8 (name);
CloseHandle (hd);
free (name);
return ret;
}
CloseHandle (hd);
*is_part = 1;
free (name);
return xasprintf ("\\\\?\\PhysicalDrive%lu", (unsigned long) exts.Extents[0].DiskNumber);
}
enum grub_dev_abstraction_types
grub_util_get_dev_abstraction_os (const char *os_dev __attribute__((unused)))
{
return GRUB_DEV_ABSTRACTION_NONE;
}
int
grub_util_pull_device_os (const char *os_dev __attribute__ ((unused)),
enum grub_dev_abstraction_types ab __attribute__ ((unused)))
{
return 0;
}
char *
grub_util_get_grub_dev_os (const char *os_dev __attribute__ ((unused)))
{
return NULL;
}
grub_disk_addr_t
grub_util_find_partition_start_os (const char *os_dev)
{
HANDLE hd;
LPTSTR name = grub_util_get_windows_path (os_dev);
VOLUME_DISK_EXTENTS exts;
DWORD extsbytes;
char *ret;
if (((name[0] == '/') || (name[0] == '\\')) &&
((name[1] == '/') || (name[1] == '\\')) &&
((name[2] == '.') || (name[2] == '?')) &&
((name[3] == '/') || (name[3] == '\\'))
&& (tcsnicmp (name + 4, TEXT("PhysicalDrive"), sizeof ("PhysicalDrive") - 1) == 0
|| tcsnicmp (name + 4, TEXT("Harddisk"), sizeof ("Harddisk") - 1) == 0
|| ((name[4] == 'A' || name[4] == 'a' || name[4] == 'B' || name[4] == 'b')
&& name[5] == ':' && name[6] == '\0')))
{
ret = grub_util_tchar_to_utf8 (name);
free (name);
return 0;
}
hd = CreateFile (name, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE,
0, OPEN_EXISTING, 0, 0);
if (hd == INVALID_HANDLE_VALUE)
{
ret = grub_util_tchar_to_utf8 (name);
free (name);
return 0;
}
if (!DeviceIoControl(hd, IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS,
NULL, 0, &exts, sizeof (exts), &extsbytes, NULL))
{
ret = grub_util_tchar_to_utf8 (name);
CloseHandle (hd);
free (name);
return 0;
}
CloseHandle (hd);
free (name);
return exts.Extents[0].StartingOffset.QuadPart / 512;
}
char *
grub_make_system_path_relative_to_its_root (const char *path)
{
TCHAR *dirwindows, *mntpointwindows;
TCHAR *ptr;
TCHAR volumename[100];
size_t mntpointwindows_sz;
size_t offset, flen;
TCHAR *ret;
char *cret;
dirwindows = grub_util_get_windows_path (path);
if (!dirwindows)
return xstrdup (path);
mntpointwindows_sz = strlen (path) * 2 + 1;
mntpointwindows = xmalloc ((mntpointwindows_sz + 1) * sizeof (mntpointwindows[0]));
if (!GetVolumePathName (dirwindows,
mntpointwindows,
mntpointwindows_sz))
{
offset = 0;
if (dirwindows[0] && dirwindows[1] == ':')
offset = 2;
}
offset = tclen (mntpointwindows);
free (mntpointwindows);
flen = tclen (dirwindows);
if (offset > flen)
{
offset = 0;
if (dirwindows[0] && dirwindows[1] == ':')
offset = 2;
}
ret = xmalloc (sizeof (ret[0]) * (flen - offset + 2));
if (dirwindows[offset] != '\\'
&& dirwindows[offset] != '/'
&& dirwindows[offset])
{
ret[0] = '\\';
memcpy (ret + 1, dirwindows + offset, (flen - offset + 1) * sizeof (ret[0]));
}
else
memcpy (ret, dirwindows + offset, (flen - offset + 1) * sizeof (ret[0]));
free (dirwindows);
for (ptr = ret; *ptr; ptr++)
if (*ptr == '\\')
*ptr = '/';
cret = grub_util_tchar_to_utf8 (ret);
free (ret);
return cret;
}
int
grub_util_biosdisk_is_floppy (grub_disk_t disk)
{
int ret;
const char *dname;
LPTSTR name;
dname = grub_util_biosdisk_get_osdev (disk);
if (!dname)
return 0;
name = grub_util_get_windows_path (dname);
ret = (((name[0] == '/') || (name[0] == '\\')) &&
((name[1] == '/') || (name[1] == '\\')) &&
((name[2] == '.') || (name[2] == '?')) &&
((name[3] == '/') || (name[3] == '\\'))
&& (name[4] == 'A' || name[4] == 'a' || name[4] == 'B' || name[4] == 'b')
&& name[5] == ':' && name[6] == '\0');
free (name);
return ret;
}

0
grub-core/kern/emu/hostdisk_windows.c → grub-core/osdep/windows/hostdisk.c
View file

55
grub-core/osdep/windows/random.c Normal file
View file

@ -0,0 +1,55 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1992-1999,2001,2003,2004,2005,2009,2010,2011,2012,2013 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 <grub/types.h>
#include <grub/crypto.h>
#include <grub/auth.h>
#include <grub/emu/misc.h>
#include <grub/util/misc.h>
#include <grub/i18n.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <windows.h>
#include <wincrypt.h>
int
grub_get_random (void *out, grub_size_t len)
{
HCRYPTPROV hCryptProv;
if (!CryptAcquireContext (&hCryptProv,
NULL,
MS_DEF_PROV,
PROV_RSA_FULL,
CRYPT_VERIFYCONTEXT))
return 1;
if (!CryptGenRandom (hCryptProv, len, out))
{
CryptReleaseContext (hCryptProv, 0);
return 1;
}
CryptReleaseContext (hCryptProv, 0);
return 0;
}