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* grub-core/kern/emu/hostdisk.c: Disentagle into a series of OS-specific

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files rather than one file with loads of #if's.
	* util/getroot.c: Likewise.
This commit is contained in:
Vladimir 'phcoder' Serbinenko 2013-09-22 07:36:17 +02:00
parent 287faafe8d
commit 3ff4063dd3
30 changed files with 4039 additions and 2364 deletions
Download patch file Download diff file Expand all files Collapse all files

707
grub-core/kern/emu/hostdisk.c
View file

@ -43,12 +43,6 @@
#include <errno.h>
#include <limits.h>
#ifdef __MINGW32__
#include <windows.h>
#include <winioctl.h>
#include "dirname.h"
#endif
#ifdef __linux__
# include <sys/ioctl.h> /* ioctl */
# include <sys/mount.h>
@ -61,73 +55,12 @@
# define BLKFLSBUF _IO (0x12,97) /* flush buffer cache */
# endif /* ! BLKFLSBUF */
# include <sys/ioctl.h> /* ioctl */
# ifndef HDIO_GETGEO
# define HDIO_GETGEO 0x0301 /* get device geometry */
/* If HDIO_GETGEO is not defined, it is unlikely that hd_geometry is
defined. */
struct hd_geometry
{
unsigned char heads;
unsigned char sectors;
unsigned short cylinders;
unsigned long start;
};
# endif /* ! HDIO_GETGEO */
# ifndef BLKGETSIZE64
# define BLKGETSIZE64 _IOR(0x12,114,size_t) /* return device size */
# endif /* ! BLKGETSIZE64 */
#endif /* __linux__ */
#ifdef __CYGWIN__
# include <sys/ioctl.h>
# include <cygwin/fs.h> /* BLKGETSIZE64 */
# include <cygwin/hdreg.h> /* HDIO_GETGEO */
#endif
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
# include <sys/disk.h> /* DIOCGMEDIASIZE */
# include <sys/param.h>
# include <sys/sysctl.h>
# include <sys/mount.h>
#include <libgeom.h>
#endif
#if defined (__sun__)
# include <sys/dkio.h>
#endif
#if defined(__APPLE__)
# include <sys/disk.h>
#endif
#ifdef HAVE_DEVICE_MAPPER
# include <libdevmapper.h>
#endif
#if defined(__NetBSD__) || defined(__OpenBSD__)
# define HAVE_DIOCGDINFO
# include <sys/ioctl.h>
# include <sys/disklabel.h> /* struct disklabel */
# include <sys/disk.h> /* struct dkwedge_info */
#else /* !defined(__NetBSD__) && !defined(__FreeBSD__) && !defined(__FreeBSD_kernel__) */
# undef HAVE_DIOCGDINFO
#endif /* defined(__NetBSD__) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__) */
#if defined(__NetBSD__) || defined(__OpenBSD__)
# 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
# ifndef RAW_FLOPPY_MAJOR
# define RAW_FLOPPY_MAJOR 9
# endif /* ! RAW_FLOPPY_MAJOR */
#endif /* defined(__NetBSD__) */
static struct
{
char *drive;
@ -144,49 +77,6 @@ struct grub_util_biosdisk_data
int device_map;
};
#ifdef __linux__
/* Check if we have devfs support. */
static int
have_devfs (void)
{
static int dev_devfsd_exists = -1;
if (dev_devfsd_exists < 0)
{
struct stat st;
dev_devfsd_exists = stat ("/dev/.devfsd", &st) == 0;
}
return dev_devfsd_exists;
}
#endif /* __linux__ */
#if defined(__NetBSD__)
/* Adjust device driver parameters. This function should be called just
after successfully opening the device. For now, it simply prevents the
floppy driver from retrying operations on failure, as otherwise the
driver takes a while to abort when there is no floppy in the drive. */
static void
configure_device_driver (int fd)
{
struct stat st;
if (fstat (fd, &st) < 0 || ! S_ISCHR (st.st_mode))
return;
if (major(st.st_rdev) == RAW_FLOPPY_MAJOR)
{
int floppy_opts;
if (ioctl (fd, FDIOCGETOPTS, &floppy_opts) == -1)
return;
floppy_opts |= FDOPT_NORETRY;
if (ioctl (fd, FDIOCSETOPTS, &floppy_opts) == -1)
return;
}
}
#endif /* defined(__NetBSD__) */
static int
unescape_cmp (const char *a, const char *b_escaped)
{
@ -251,171 +141,41 @@ grub_util_biosdisk_iterate (grub_disk_dev_iterate_hook_t hook, void *hook_data,
return 0;
}
#ifdef __MINGW32__
grub_uint64_t
grub_util_get_fd_size (int fd __attribute__ ((unused)), const char *name_in,
grub_util_get_fd_size (int fd, const char *name,
unsigned *log_secsize)
{
HANDLE hd;
grub_int64_t size = -1LL;
int log_sector_size = 9;
char *name = xstrdup (name_in);
if (log_secsize)
*log_secsize = log_sector_size;
strip_trailing_slashes(name);
hd = CreateFile (name, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE,
0, OPEN_EXISTING, 0, 0);
if (hd == INVALID_HANDLE_VALUE)
{
free (name);
return size;
}
if (((name[0] == '/') || (name[0] == '\\')) &&
((name[1] == '/') || (name[1] == '\\')) &&
(name[2] == '.') &&
((name[3] == '/') || (name[3] == '\\')) &&
(! strncasecmp (name + 4, "PHYSICALDRIVE", 13)))
{
DWORD nr;
DISK_GEOMETRY g;
if (! DeviceIoControl (hd, IOCTL_DISK_GET_DRIVE_GEOMETRY,
0, 0, &g, sizeof (g), &nr, 0))
goto fail;
size = g.Cylinders.QuadPart;
size *= g.TracksPerCylinder * g.SectorsPerTrack * g.BytesPerSector;
for (log_sector_size = 0;
(1 << log_sector_size) < g.BytesPerSector;
log_sector_size++);
}
else
{
ULARGE_INTEGER s;
s.LowPart = GetFileSize (hd, &s.HighPart);
size = s.QuadPart;
}
fail:
if (log_secsize)
*log_secsize = log_sector_size;
free (name);
CloseHandle (hd);
return size;
return grub_util_get_fd_size_os (fd, name, log_secsize);
}
#endif
#else
#if !defined(__MINGW32__)
grub_uint64_t
grub_util_get_fd_size (int fd, const char *name, unsigned *log_secsize)
{
#if !defined (__GNU__)
# if defined(__NetBSD__) || defined(__OpenBSD__)
struct disklabel label;
# elif defined (__sun__)
struct dk_minfo minfo;
# else
unsigned long long nr;
# endif
#endif
unsigned sector_size, log_sector_size;
struct stat st;
grub_int64_t ret = -1;
if (fstat (fd, &st) < 0)
/* TRANSLATORS: "stat" comes from the name of POSIX function. */
grub_util_error (_("cannot stat `%s': %s"), name, strerror (errno));
#if defined(__linux__) || defined(__CYGWIN__) || defined(__FreeBSD__) || \
defined(__FreeBSD_kernel__) || defined(__APPLE__) || defined(__NetBSD__) \
|| defined (__sun__) || defined(__OpenBSD__)
# if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__APPLE__) || defined(__NetBSD__) || defined (__sun__) || defined(__OpenBSD__)
if (! S_ISCHR (st.st_mode))
# else
if (! S_ISBLK (st.st_mode))
# endif
goto fail;
# if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
if (ioctl (fd, DIOCGMEDIASIZE, &nr))
# elif defined(__APPLE__)
if (ioctl (fd, DKIOCGETBLOCKCOUNT, &nr))
# elif defined(__NetBSD__) || defined(__OpenBSD__)
# if defined(__NetBSD__)
configure_device_driver (fd);
# endif
if (ioctl (fd, DIOCGDINFO, &label) == -1)
# elif defined (__sun__)
if (!ioctl (fd, DKIOCGMEDIAINFO, &minfo))
# else
if (ioctl (fd, BLKGETSIZE64, &nr))
# endif
goto fail;
# if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
if (ioctl (fd, DIOCGSECTORSIZE, &sector_size))
goto fail;
# elif defined(__APPLE__)
if (ioctl (fd, DKIOCGETBLOCKSIZE, &sector_size))
goto fail;
# elif defined(__sun__)
sector_size = minfo.dki_lbsize;
# elif defined(__NetBSD__) || defined(__OpenBSD__)
sector_size = label.d_secsize;
# else
if (ioctl (fd, BLKSSZGET, &sector_size))
goto fail;
# endif
if (sector_size & (sector_size - 1) || !sector_size)
goto fail;
for (log_sector_size = 0;
(1 << log_sector_size) < sector_size;
log_sector_size++);
if (log_secsize)
*log_secsize = log_sector_size;
# if defined (__APPLE__)
return nr << log_sector_size;
# elif defined(__NetBSD__) || defined(__OpenBSD__)
return (grub_uint64_t) label.d_secperunit << log_sector_size;
# elif defined (__sun__)
return minfo.dki_capacity << log_sector_size;
# else
if (nr & ((1 << log_sector_size) - 1))
grub_util_error ("%s", _("unaligned device size"));
return nr;
# endif
fail:
/* In GNU/Hurd, stat() will return the right size. */
#elif !defined (__GNU__)
# warning "No special routine to get the size of a block device is implemented for your OS. This is not possibly fatal."
#if GRUB_DISK_DEVS_ARE_CHAR
if (S_ISCHR (st.st_mode))
#else
if (S_ISBLK (st.st_mode))
#endif
sector_size = 512;
log_sector_size = 9;
ret = grub_util_get_fd_size_os (fd, name, log_secsize);
if (ret != -1LL)
return ret;
if (log_secsize)
*log_secsize = 9;
*log_secsize = 9;
return st.st_size;
}
#endif
static grub_err_t
@ -457,7 +217,7 @@ grub_util_biosdisk_open (const char *name, grub_disk_t disk)
#if !defined(__MINGW32__)
# if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__APPLE__) || defined(__NetBSD__)
# if GRUB_DISK_DEVS_ARE_CHAR
if (fstat (fd, &st) < 0 || ! S_ISCHR (st.st_mode))
# else
if (fstat (fd, &st) < 0 || ! S_ISBLK (st.st_mode))
@ -474,412 +234,6 @@ grub_util_biosdisk_open (const char *name, grub_disk_t disk)
}
}
#ifdef HAVE_DEVICE_MAPPER
static void device_mapper_null_log (int level __attribute__ ((unused)),
const char *file __attribute__ ((unused)),
int line __attribute__ ((unused)),
int dm_errno __attribute__ ((unused)),
const char *f __attribute__ ((unused)),
...)
{
}
int
grub_device_mapper_supported (void)
{
static int supported = -1;
if (supported == -1)
{
struct dm_task *dmt;
/* Suppress annoying log messages. */
dm_log_with_errno_init (&device_mapper_null_log);
dmt = dm_task_create (DM_DEVICE_VERSION);
supported = (dmt != NULL);
if (dmt)
dm_task_destroy (dmt);
/* Restore the original logger. */
dm_log_with_errno_init (NULL);
}
return supported;
}
#endif /* HAVE_DEVICE_MAPPER */
int
grub_util_device_is_mapped (const char *dev)
{
#ifdef HAVE_DEVICE_MAPPER
struct stat st;
if (!grub_device_mapper_supported ())
return 0;
if (stat (dev, &st) < 0)
return 0;
return dm_is_dm_major (major (st.st_rdev));
#else
return 0;
#endif /* HAVE_DEVICE_MAPPER */
}
#ifdef HAVE_DEVICE_MAPPER
int
grub_util_get_dm_node_linear_info (const char *dev,
int *maj, int *min,
grub_disk_addr_t *st)
{
struct dm_task *dmt;
void *next = NULL;
uint64_t length, start;
char *target, *params;
char *ptr;
int major = 0, minor = 0;
int first = 1;
grub_disk_addr_t partstart = 0;
const char *node_uuid;
while (1)
{
dmt = dm_task_create(DM_DEVICE_TABLE);
if (!dmt)
break;
if (! (first ? dm_task_set_name (dmt, dev)
: dm_task_set_major_minor (dmt, major, minor, 0)))
{
dm_task_destroy (dmt);
break;
}
dm_task_no_open_count(dmt);
if (!dm_task_run(dmt))
{
dm_task_destroy (dmt);
break;
}
node_uuid = dm_task_get_uuid (dmt);
if (node_uuid && (strncmp (node_uuid, "LVM-", 4) == 0
|| strncmp (node_uuid, "mpath-", 6) == 0
|| strncmp (node_uuid, "DMRAID-", 7) == 0))
{
dm_task_destroy (dmt);
break;
}
next = dm_get_next_target(dmt, next, &start, &length,
&target, &params);
if (grub_strcmp (target, "linear") != 0)
{
dm_task_destroy (dmt);
break;
}
major = grub_strtoul (params, &ptr, 10);
if (grub_errno)
{
dm_task_destroy (dmt);
grub_errno = GRUB_ERR_NONE;
return 0;
}
if (*ptr != ':')
{
dm_task_destroy (dmt);
return 0;
}
ptr++;
minor = grub_strtoul (ptr, &ptr, 10);
if (grub_errno)
{
grub_errno = GRUB_ERR_NONE;
dm_task_destroy (dmt);
return 0;
}
if (*ptr != ' ')
{
dm_task_destroy (dmt);
return 0;
}
ptr++;
partstart += grub_strtoull (ptr, &ptr, 10);
if (grub_errno)
{
grub_errno = GRUB_ERR_NONE;
dm_task_destroy (dmt);
return 0;
}
dm_task_destroy (dmt);
first = 0;
if (!dm_is_dm_major (major))
break;
}
if (first)
return 0;
if (maj)
*maj = major;
if (min)
*min = minor;
if (st)
*st = partstart;
return 1;
}
#endif
#if defined (__FreeBSD__) || defined(__FreeBSD_kernel__)
/* 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 error;
struct ggeom *geom;
grub_util_info ("following geom '%s'", name);
error = geom_gettree (&mesh);
if (error != 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_hostdisk_find_partition_start (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;
}
#elif defined(__linux__) || defined(__CYGWIN__) || defined(HAVE_DIOCGDINFO) || defined (__sun__)
grub_disk_addr_t
grub_hostdisk_find_partition_start (const char *dev)
{
int fd;
#ifdef __sun__
struct extpart_info pinfo;
# elif !defined(HAVE_DIOCGDINFO)
struct hd_geometry hdg;
# else /* defined(HAVE_DIOCGDINFO) */
# if defined(__NetBSD__)
struct dkwedge_info dkw;
# endif /* defined(__NetBSD__) */
struct disklabel label;
int p_index;
# endif /* !defined(HAVE_DIOCGDINFO) */
# ifdef HAVE_DEVICE_MAPPER
grub_disk_addr_t partition_start;
if (grub_util_device_is_mapped (dev)
&& grub_util_get_dm_node_linear_info (dev, 0, 0, &partition_start))
return partition_start;
# endif /* HAVE_DEVICE_MAPPER */
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(__sun__)
if (ioctl (fd, DKIOCEXTPARTINFO, &pinfo))
# elif !defined(HAVE_DIOCGDINFO)
if (ioctl (fd, HDIO_GETGEO, &hdg))
# else /* defined(HAVE_DIOCGDINFO) */
# 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)
# endif /* !defined(HAVE_DIOCGDINFO) */
{
grub_error (GRUB_ERR_BAD_DEVICE,
# if !defined(HAVE_DIOCGDINFO)
"cannot get disk geometry of `%s'", dev);
# else /* defined(HAVE_DIOCGDINFO) */
"cannot get disk label of `%s'", dev);
# endif /* !defined(HAVE_DIOCGDINFO) */
close (fd);
return 0;
}
close (fd);
#ifdef __sun__
return pinfo.p_start;
# elif !defined(HAVE_DIOCGDINFO)
return hdg.start;
# else /* defined(HAVE_DIOCGDINFO) */
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;
# endif /* !defined(HAVE_DIOCGDINFO) */
}
#endif /* __linux__ || __CYGWIN__ || HAVE_DIOCGDINFO */
#ifdef __linux__
/* Cache of partition start sectors for each disk. */
struct linux_partition_cache
{
struct linux_partition_cache *next;
struct linux_partition_cache **prev;
char *dev;
unsigned long start;
int partno;
};
struct linux_partition_cache *linux_partition_cache_list;
static int
linux_find_partition (char *dev, grub_disk_addr_t sector)
{
size_t len = strlen (dev);
const char *format;
char *p;
int i;
char real_dev[PATH_MAX];
struct linux_partition_cache *cache;
int missing = 0;
strcpy(real_dev, dev);
if (have_devfs () && strcmp (real_dev + len - 5, "/disc") == 0)
{
p = real_dev + len - 4;
format = "part%d";
}
else if (strncmp (real_dev, "/dev/disk/by-id/",
sizeof ("/dev/disk/by-id/") - 1) == 0)
{
p = real_dev + len;
format = "-part%d";
}
else if (real_dev[len - 1] >= '0' && real_dev[len - 1] <= '9')
{
p = real_dev + len;
format = "p%d";
}
else
{
p = real_dev + len;
format = "%d";
}
for (cache = linux_partition_cache_list; cache; cache = cache->next)
{
if (strcmp (cache->dev, dev) == 0 && cache->start == sector)
{
sprintf (p, format, cache->partno);
strcpy (dev, real_dev);
return 1;
}
}
for (i = 1; i < 10000; i++)
{
int fd;
grub_disk_addr_t start;
sprintf (p, format, i);
fd = open (real_dev, O_RDONLY);
if (fd == -1)
{
if (missing++ < 10)
continue;
else
return 0;
}
missing = 0;
close (fd);
start = grub_hostdisk_find_partition_start (real_dev);
/* We don't care about errors here. */
grub_errno = GRUB_ERR_NONE;
if (start == sector)
{
struct linux_partition_cache *new_cache_item;
new_cache_item = xmalloc (sizeof *new_cache_item);
new_cache_item->dev = xstrdup (dev);
new_cache_item->start = start;
new_cache_item->partno = i;
grub_list_push (GRUB_AS_LIST_P (&linux_partition_cache_list),
GRUB_AS_LIST (new_cache_item));
strcpy (dev, real_dev);
return 1;
}
}
return 0;
}
#endif /* __linux__ */
#if defined(__linux__) && (!defined(__GLIBC__) || \
((__GLIBC__ < 2) || ((__GLIBC__ == 2) && (__GLIBC_MINOR__ < 1))))
/* Maybe libc doesn't have large file support. */
@ -911,21 +265,6 @@ grub_util_fd_seek (int fd, const char *name, grub_uint64_t off)
}
#endif
static void
flush_initial_buffer (const char *os_dev __attribute__ ((unused)))
{
#ifdef __linux__
int fd;
struct stat st;
fd = open (os_dev, O_RDONLY);
if (fd >= 0 && fstat (fd, &st) >= 0 && S_ISBLK (st.st_mode))
ioctl (fd, BLKFLSBUF, 0);
if (fd >= 0)
close (fd);
#endif
}
const char *
grub_hostdisk_os_dev_to_grub_drive (const char *os_disk, int add)
{
@ -961,7 +300,7 @@ grub_hostdisk_os_dev_to_grub_drive (const char *os_disk, int add)
strcpy (map[i].drive + sizeof ("hostdisk/") - 1, os_disk);
map[i].device_map = 0;
flush_initial_buffer (os_disk);
grub_hostdisk_flush_initial_buffer (os_disk);
return map[i].drive;
}
@ -1003,7 +342,7 @@ open_device (const grub_disk_t disk, grub_disk_addr_t sector, int flags,
&& strncmp (map[disk->id].device, "/dev/", 5) == 0)
{
if (sector >= part_start)
is_partition = linux_find_partition (dev, part_start);
is_partition = grub_hostdisk_linux_find_partition (dev, part_start);
else
*max = part_start - sector;
}
@ -1025,10 +364,8 @@ open_device (const grub_disk_t disk, grub_disk_addr_t sector, int flags,
if (data->access_mode == O_RDWR || data->access_mode == O_WRONLY)
{
fsync (data->fd);
#ifdef __linux__
if (data->is_disk)
ioctl (data->fd, BLKFLSBUF, 0);
#endif
}
close (data->fd);
@ -1049,10 +386,8 @@ open_device (const grub_disk_t disk, grub_disk_addr_t sector, int flags,
data->access_mode = (flags & O_ACCMODE);
data->fd = fd;
#ifdef __linux__
if (data->is_disk)
ioctl (data->fd, BLKFLSBUF, 0);
#endif
}
if (is_partition)
@ -1106,10 +441,6 @@ open_device (const grub_disk_t disk, grub_disk_addr_t sector, int flags,
if (data->access_mode == O_RDWR || data->access_mode == O_WRONLY)
{
fsync (data->fd);
#ifdef __linux__
if (data->is_disk)
ioctl (data->fd, BLKFLSBUF, 0);
#endif
}
close (data->fd);
data->fd = -1;
@ -1147,9 +478,7 @@ open_device (const grub_disk_t disk, grub_disk_addr_t sector, int flags,
}
#endif /* ! __linux__ */
#if defined(__NetBSD__)
configure_device_driver (fd);
#endif /* defined(__NetBSD__) */
grub_hostdisk_configure_device_driver (fd);
if (grub_util_fd_seek (fd, map[disk->id].device,
sector << disk->log_sector_size))
@ -1485,7 +814,7 @@ read_device_map (const char *dev_map)
grub_util_info ("adding `%s' -> `%s' from device.map", map[drive].drive,
map[drive].device);
flush_initial_buffer (map[drive].device);
grub_hostdisk_flush_initial_buffer (map[drive].device);
}
fclose (fp);

74
grub-core/kern/emu/hostdisk_apple.c Normal file
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@ -0,0 +1,74 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1999,2000,2001,2002,2003,2004,2006,2007,2008,2009,2010,2011,2012,2013 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 <grub/disk.h>
#include <grub/partition.h>
#include <grub/msdos_partition.h>
#include <grub/types.h>
#include <grub/err.h>
#include <grub/emu/misc.h>
#include <grub/emu/hostdisk.h>
#include <grub/emu/getroot.h>
#include <grub/misc.h>
#include <grub/i18n.h>
#include <grub/list.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <assert.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <limits.h>
# include <sys/disk.h>
grub_uint64_t
grub_util_get_fd_size (int fd, const char *name, unsigned *log_secsize)
{
unsigned long long nr;
unsigned sector_size, log_sector_size;
if (ioctl (fd, DKIOCGETBLOCKCOUNT, &nr))
return -1;
if (ioctl (fd, DKIOCGETBLOCKSIZE, &sector_size))
return -1;
if (sector_size & (sector_size - 1) || !sector_size)
return -1;
for (log_sector_size = 0;
(1 << log_sector_size) < sector_size;
log_sector_size++);
if (log_secsize)
*log_secsize = log_sector_size;
return nr << log_sector_size;
}
void
grub_hostdisk_configure_device_driver (int fd __attribute__ ((unused)))
{
}

63
grub-core/kern/emu/hostdisk_basic.c Normal file
View file

@ -0,0 +1,63 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1999,2000,2001,2002,2003,2004,2006,2007,2008,2009,2010,2011,2012,2013 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 <grub/disk.h>
#include <grub/partition.h>
#include <grub/msdos_partition.h>
#include <grub/types.h>
#include <grub/err.h>
#include <grub/emu/misc.h>
#include <grub/emu/hostdisk.h>
#include <grub/emu/getroot.h>
#include <grub/misc.h>
#include <grub/i18n.h>
#include <grub/list.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <assert.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <limits.h>
grub_int64_t
grub_util_get_fd_size_os (int fd __attribute__ ((unused)),
const char *name __attribute__ ((unused)),
unsigned *log_secsize __attribute__ ((unused)))
{
# warning "No special routine to get the size of a block device is implemented for your OS. This is not possibly fatal."
return -1;
}
void
grub_hostdisk_configure_device_driver (int fd __attribute__ ((unused)))
{
}
void
grub_hostdisk_flush_initial_buffer (const char *os_dev __attribute__ ((unused)))
{
}

115
grub-core/kern/emu/hostdisk_bsd.c Normal file
View file

@ -0,0 +1,115 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1999,2000,2001,2002,2003,2004,2006,2007,2008,2009,2010,2011,2012,2013 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 <grub/disk.h>
#include <grub/partition.h>
#include <grub/msdos_partition.h>
#include <grub/types.h>
#include <grub/err.h>
#include <grub/emu/misc.h>
#include <grub/emu/hostdisk.h>
#include <grub/emu/getroot.h>
#include <grub/misc.h>
#include <grub/i18n.h>
#include <grub/list.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <assert.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <limits.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
#if defined(__NetBSD__)
/* Adjust device driver parameters. This function should be called just
after successfully opening the device. For now, it simply prevents the
floppy driver from retrying operations on failure, as otherwise the
driver takes a while to abort when there is no floppy in the drive. */
void
grub_hostdisk_configure_device_driver (int fd)
{
struct stat st;
if (fstat (fd, &st) < 0 || ! S_ISCHR (st.st_mode))
return;
if (major(st.st_rdev) == RAW_FLOPPY_MAJOR)
{
int floppy_opts;
if (ioctl (fd, FDIOCGETOPTS, &floppy_opts) == -1)
return;
floppy_opts |= FDOPT_NORETRY;
if (ioctl (fd, FDIOCSETOPTS, &floppy_opts) == -1)
return;
}
}
#else
void
grub_hostdisk_configure_device_driver (int fd __attribute__ ((unused)))
{
}
#endif
grub_int64_t
grub_util_get_fd_size_os (int fd, const char *name, unsigned *log_secsize)
{
struct disklabel label;
unsigned sector_size, log_sector_size;
grub_hostdisk_configure_device_driver (fd);
if (ioctl (fd, DIOCGDINFO, &label) == -1)
return -1;
sector_size = label.d_secsize;
if (sector_size & (sector_size - 1) || !sector_size)
return -1;
for (log_sector_size = 0;
(1 << log_sector_size) < sector_size;
log_sector_size++);
if (log_secsize)
*log_secsize = log_sector_size;
return (grub_uint64_t) label.d_secperunit << log_sector_size;
}
void
grub_hostdisk_flush_initial_buffer (const char *os_dev __attribute__ ((unused)))
{
}

84
grub-core/kern/emu/hostdisk_cygwin.c Normal file
View file

@ -0,0 +1,84 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1999,2000,2001,2002,2003,2004,2006,2007,2008,2009,2010,2011,2012,2013 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 <grub/disk.h>
#include <grub/partition.h>
#include <grub/msdos_partition.h>
#include <grub/types.h>
#include <grub/err.h>
#include <grub/emu/misc.h>
#include <grub/emu/hostdisk.h>
#include <grub/emu/getroot.h>
#include <grub/misc.h>
#include <grub/i18n.h>
#include <grub/list.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <assert.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <limits.h>
# include <sys/ioctl.h>
# include <cygwin/fs.h> /* BLKGETSIZE64 */
# include <cygwin/hdreg.h> /* HDIO_GETGEO */
grub_int64_t
grub_util_get_fd_size_os (int fd, const char *name, unsigned *log_secsize)
{
unsigned long long nr;
unsigned sector_size, log_sector_size;
if (ioctl (fd, BLKGETSIZE64, &nr))
return -1;
if (ioctl (fd, BLKSSZGET, &sector_size))
return -1;
if (sector_size & (sector_size - 1) || !sector_size)
return -1;
for (log_sector_size = 0;
(1 << log_sector_size) < sector_size;
log_sector_size++);
if (log_secsize)
*log_secsize = log_sector_size;
if (nr & ((1 << log_sector_size) - 1))
grub_util_error ("%s", _("unaligned device size"));
return nr;
}
void
grub_hostdisk_flush_initial_buffer (const char *os_dev __attribute__ ((unused)))
{
}
void
grub_hostdisk_configure_device_driver (int fd __attribute__ ((unused)))
{
}

194
grub-core/kern/emu/hostdisk_devmapper.c Normal file
View file

@ -0,0 +1,194 @@
#include <config-util.h>
#include <grub/disk.h>
#include <grub/partition.h>
#include <grub/msdos_partition.h>
#include <grub/types.h>
#include <grub/err.h>
#include <grub/emu/misc.h>
#include <grub/emu/hostdisk.h>
#include <grub/emu/getroot.h>
#include <grub/misc.h>
#include <grub/i18n.h>
#include <grub/list.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <assert.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <limits.h>
#ifdef HAVE_DEVICE_MAPPER
# include <libdevmapper.h>
static void device_mapper_null_log (int level __attribute__ ((unused)),
const char *file __attribute__ ((unused)),
int line __attribute__ ((unused)),
int dm_errno __attribute__ ((unused)),
const char *f __attribute__ ((unused)),
...)
{
}
int
grub_device_mapper_supported (void)
{
static int supported = -1;
if (supported == -1)
{
struct dm_task *dmt;
/* Suppress annoying log messages. */
dm_log_with_errno_init (&device_mapper_null_log);
dmt = dm_task_create (DM_DEVICE_VERSION);
supported = (dmt != NULL);
if (dmt)
dm_task_destroy (dmt);
/* Restore the original logger. */
dm_log_with_errno_init (NULL);
}
return supported;
}
int
grub_util_device_is_mapped (const char *dev)
{
struct stat st;
if (!grub_device_mapper_supported ())
return 0;
if (stat (dev, &st) < 0)
return 0;
return dm_is_dm_major (major (st.st_rdev));
}
int
grub_util_get_dm_node_linear_info (const char *dev,
int *maj, int *min,
grub_disk_addr_t *st)
{
struct dm_task *dmt;
void *next = NULL;
uint64_t length, start;
char *target, *params;
char *ptr;
int major = 0, minor = 0;
int first = 1;
grub_disk_addr_t partstart = 0;
const char *node_uuid;
while (1)
{
dmt = dm_task_create(DM_DEVICE_TABLE);
if (!dmt)
break;
if (! (first ? dm_task_set_name (dmt, dev)
: dm_task_set_major_minor (dmt, major, minor, 0)))
{
dm_task_destroy (dmt);
break;
}
dm_task_no_open_count(dmt);
if (!dm_task_run(dmt))
{
dm_task_destroy (dmt);
break;
}
node_uuid = dm_task_get_uuid (dmt);
if (node_uuid && (strncmp (node_uuid, "LVM-", 4) == 0
|| strncmp (node_uuid, "mpath-", 6) == 0
|| strncmp (node_uuid, "DMRAID-", 7) == 0))
{
dm_task_destroy (dmt);
break;
}
next = dm_get_next_target(dmt, next, &start, &length,
&target, &params);
if (grub_strcmp (target, "linear") != 0)
{
dm_task_destroy (dmt);
break;
}
major = grub_strtoul (params, &ptr, 10);
if (grub_errno)
{
dm_task_destroy (dmt);
grub_errno = GRUB_ERR_NONE;
return 0;
}
if (*ptr != ':')
{
dm_task_destroy (dmt);
return 0;
}
ptr++;
minor = grub_strtoul (ptr, &ptr, 10);
if (grub_errno)
{
grub_errno = GRUB_ERR_NONE;
dm_task_destroy (dmt);
return 0;
}
if (*ptr != ' ')
{
dm_task_destroy (dmt);
return 0;
}
ptr++;
partstart += grub_strtoull (ptr, &ptr, 10);
if (grub_errno)
{
grub_errno = GRUB_ERR_NONE;
dm_task_destroy (dmt);
return 0;
}
dm_task_destroy (dmt);
first = 0;
if (!dm_is_dm_major (major))
break;
}
if (first)
return 0;
if (maj)
*maj = major;
if (min)
*min = minor;
if (st)
*st = partstart;
return 1;
}
#else
int
grub_util_device_is_mapped (const char *dev __attribute__ ((unused)))
{
return 0;
}
int
grub_util_get_dm_node_linear_info (const char *dev __attribute__ ((unused)),
int *maj __attribute__ ((unused)),
int *min __attribute__ ((unused)),
grub_disk_addr_t *st __attribute__ ((unused)))
{
return 0;
}
#endif

85
grub-core/kern/emu/hostdisk_freebsd.c Normal file
View file

@ -0,0 +1,85 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1999,2000,2001,2002,2003,2004,2006,2007,2008,2009,2010,2011,2012,2013 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 <grub/disk.h>
#include <grub/partition.h>
#include <grub/msdos_partition.h>
#include <grub/types.h>
#include <grub/err.h>
#include <grub/emu/misc.h>
#include <grub/emu/hostdisk.h>
#include <grub/emu/getroot.h>
#include <grub/misc.h>
#include <grub/i18n.h>
#include <grub/list.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <assert.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <limits.h>
# include <sys/disk.h> /* DIOCGMEDIASIZE */
# include <sys/param.h>
# include <sys/sysctl.h>
# include <sys/mount.h>
# include <libgeom.h>
void
grub_hostdisk_configure_device_driver (int fd __attribute__ ((unused)))
{
}
grub_int64_t
grub_util_get_fd_size_os (int fd, const char *name, unsigned *log_secsize)
{
unsigned long long nr;
unsigned sector_size, log_sector_size;
if (ioctl (fd, DIOCGMEDIASIZE, &nr))
return -1;
if (ioctl (fd, DIOCGSECTORSIZE, &sector_size))
return -1;
if (sector_size & (sector_size - 1) || !sector_size)
return -1;
for (log_sector_size = 0;
(1 << log_sector_size) < sector_size;
log_sector_size++);
if (log_secsize)
*log_secsize = log_sector_size;
if (nr & (sector_size - 1))
grub_util_error ("%s", _("unaligned device size"));
return nr;
}
void
grub_hostdisk_flush_initial_buffer (const char *os_dev __attribute__ ((unused)))
{
}

151
grub-core/kern/emu/hostdisk_hurd.c Normal file
View file

@ -0,0 +1,151 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1999,2000,2001,2002,2003,2004,2006,2007,2008,2009,2010,2011,2012,2013 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 <grub/disk.h>
#include <grub/partition.h>
#include <grub/msdos_partition.h>
#include <grub/types.h>
#include <grub/err.h>
#include <grub/emu/misc.h>
#include <grub/emu/hostdisk.h>
#include <grub/emu/getroot.h>
#include <grub/misc.h>
#include <grub/i18n.h>
#include <grub/list.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <assert.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <limits.h>
#include <hurd.h>
#include <hurd/lookup.h>
#include <hurd/fs.h>
#include <sys/mman.h>
void
grub_hostdisk_configure_device_driver (int fd __attribute__ ((unused)))
{
}
int
grub_util_hurd_get_disk_info (const char *dev, grub_uint32_t *secsize, grub_disk_addr_t *offset,
grub_disk_addr_t *size, char **parent)
{
file_t file;
mach_port_t *ports;
int *ints;
loff_t *offsets;
char *data;
error_t err;
mach_msg_type_number_t num_ports = 0, num_ints = 0, num_offsets = 0, data_len = 0;
file = file_name_lookup (dev, 0, 0);
if (file == MACH_PORT_NULL)
return 0;
err = file_get_storage_info (file,
&ports, &num_ports,
&ints, &num_ints,
&offsets, &num_offsets,
&data, &data_len);
if (num_ints < 1)
grub_util_error (_("Storage info for `%s' does not include type"), dev);
if (ints[0] != STORAGE_DEVICE)
grub_util_error (_("`%s' is not a local disk"), dev);
if (num_offsets != 2)
grub_util_error (_("Storage info for `%s' does indicate neither plain partition nor plain disk"), dev);
if (parent)
{
*parent = NULL;
if (num_ints >= 5)
{
size_t len = ints[4];
if (len > data_len)
len = data_len;
*parent = xmalloc (len+1);
memcpy (*parent, data, len);
(*parent)[len] = '\0';
}
}
if (offset)
*offset = offsets[0];
if (size)
*size = offsets[1];
if (secsize)
*secsize = ints[2];
if (ports && num_ports > 0)
{
mach_msg_type_number_t i;
for (i = 0; i < num_ports; i++)
{
mach_port_t port = ports[i];
if (port != MACH_PORT_NULL)
mach_port_deallocate (mach_task_self(), port);
}
munmap ((caddr_t) ports, num_ports * sizeof (*ports));
}
if (ints && num_ints > 0)
munmap ((caddr_t) ints, num_ints * sizeof (*ints));
if (offsets && num_offsets > 0)
munmap ((caddr_t) offsets, num_offsets * sizeof (*offsets));
if (data && data_len > 0)
munmap (data, data_len);
mach_port_deallocate (mach_task_self (), file);
return 1;
}
grub_int64_t
grub_util_get_fd_size_os (int fd, const char *name, unsigned *log_secsize)
{
grub_uint32_t sector_size;
grub_disk_addr_t size;
unsigned log_sector_size;
if (!grub_util_hurd_get_disk_info (name, &sector_size, NULL, &size, NULL))
return -1;
if (sector_size & (sector_size - 1) || !sector_size)
return -1;
for (log_sector_size = 0;
(1 << log_sector_size) < sector_size;
log_sector_size++);
if (log_secsize)
*log_secsize = log_sector_size;
return size << log_sector_size;
}
void
grub_hostdisk_flush_initial_buffer (const char *os_dev __attribute__ ((unused)))
{
}

255
grub-core/kern/emu/hostdisk_linux.c Normal file
View file

@ -0,0 +1,255 @@
/* hostdisk.c - emulate biosdisk */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1999,2000,2001,2002,2003,2004,2006,2007,2008,2009,2010,2011,2012,2013 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 <grub/disk.h>
#include <grub/partition.h>
#include <grub/msdos_partition.h>
#include <grub/types.h>
#include <grub/err.h>
#include <grub/emu/misc.h>
#include <grub/emu/hostdisk.h>
#include <grub/emu/getroot.h>
#include <grub/misc.h>
#include <grub/i18n.h>
#include <grub/list.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <assert.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <limits.h>
# include <sys/ioctl.h> /* ioctl */
# include <sys/mount.h>
# ifndef BLKFLSBUF
# define BLKFLSBUF _IO (0x12,97) /* flush buffer cache */
# endif /* ! BLKFLSBUF */
# include <sys/ioctl.h> /* ioctl */
# ifndef HDIO_GETGEO
# define HDIO_GETGEO 0x0301 /* get device geometry */
/* If HDIO_GETGEO is not defined, it is unlikely that hd_geometry is
defined. */
struct hd_geometry
{
unsigned char heads;
unsigned char sectors;
unsigned short cylinders;
unsigned long start;
};
# endif /* ! HDIO_GETGEO */
# ifndef BLKGETSIZE64
# define BLKGETSIZE64 _IOR(0x12,114,size_t) /* return device size */
# endif /* ! BLKGETSIZE64 */
grub_int64_t
grub_util_get_fd_size_os (int fd, const char *name, unsigned *log_secsize)
{
unsigned long long nr;
unsigned sector_size, log_sector_size;
if (ioctl (fd, BLKGETSIZE64, &nr))
return -1;
if (ioctl (fd, BLKSSZGET, &sector_size))
return -1;
if (sector_size & (sector_size - 1) || !sector_size)
return -1;
for (log_sector_size = 0;
(1 << log_sector_size) < sector_size;
log_sector_size++);
if (log_secsize)
*log_secsize = log_sector_size;
if (nr & ((1 << log_sector_size) - 1))
grub_util_error ("%s", _("unaligned device size"));
return nr;
}
grub_disk_addr_t
grub_util_find_partition_start_os (const char *dev)
{
int fd;
struct hd_geometry hdg;
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, HDIO_GETGEO, &hdg))
{
grub_error (GRUB_ERR_BAD_DEVICE,
"cannot get disk geometry of `%s'", dev);
close (fd);
return 0;
}
close (fd);
return hdg.start;
}
/* Cache of partition start sectors for each disk. */
struct linux_partition_cache
{
struct linux_partition_cache *next;
struct linux_partition_cache **prev;
char *dev;
unsigned long start;
int partno;
};
struct linux_partition_cache *linux_partition_cache_list;
/* Check if we have devfs support. */
static int
have_devfs (void)
{
static int dev_devfsd_exists = -1;
if (dev_devfsd_exists < 0)
{
struct stat st;
dev_devfsd_exists = stat ("/dev/.devfsd", &st) == 0;
}
return dev_devfsd_exists;
}
int
grub_hostdisk_linux_find_partition (char *dev, grub_disk_addr_t sector)
{
size_t len = strlen (dev);
const char *format;
char *p;
int i;
char real_dev[PATH_MAX];
struct linux_partition_cache *cache;
int missing = 0;
strcpy(real_dev, dev);
if (have_devfs () && strcmp (real_dev + len - 5, "/disc") == 0)
{
p = real_dev + len - 4;
format = "part%d";
}
else if (strncmp (real_dev, "/dev/disk/by-id/",
sizeof ("/dev/disk/by-id/") - 1) == 0)
{
p = real_dev + len;
format = "-part%d";
}
else if (real_dev[len - 1] >= '0' && real_dev[len - 1] <= '9')
{
p = real_dev + len;
format = "p%d";
}
else
{
p = real_dev + len;
format = "%d";
}
for (cache = linux_partition_cache_list; cache; cache = cache->next)
{
if (strcmp (cache->dev, dev) == 0 && cache->start == sector)
{
sprintf (p, format, cache->partno);
strcpy (dev, real_dev);
return 1;
}
}
for (i = 1; i < 10000; i++)
{
int fd;
grub_disk_addr_t start;
sprintf (p, format, i);
fd = open (real_dev, O_RDONLY);
if (fd == -1)
{
if (missing++ < 10)
continue;
else
return 0;
}
missing = 0;
close (fd);
if (!grub_util_device_is_mapped (real_dev)
|| !grub_util_get_dm_node_linear_info (real_dev, 0, 0, &start))
start = grub_util_find_partition_start_os (real_dev);
/* We don't care about errors here. */
grub_errno = GRUB_ERR_NONE;
if (start == sector)
{
struct linux_partition_cache *new_cache_item;
new_cache_item = xmalloc (sizeof *new_cache_item);
new_cache_item->dev = xstrdup (dev);
new_cache_item->start = start;
new_cache_item->partno = i;
grub_list_push (GRUB_AS_LIST_P (&linux_partition_cache_list),
GRUB_AS_LIST (new_cache_item));
strcpy (dev, real_dev);
return 1;
}
}
return 0;
}
void
grub_hostdisk_flush_initial_buffer (const char *os_dev)
{
int fd;
struct stat st;
fd = open (os_dev, O_RDONLY);
if (fd >= 0 && fstat (fd, &st) >= 0 && S_ISBLK (st.st_mode))
ioctl (fd, BLKFLSBUF, 0);
if (fd >= 0)
close (fd);
}
void
grub_hostdisk_configure_device_driver (int fd __attribute__ ((unused)))
{
}

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/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1999,2000,2001,2002,2003,2004,2006,2007,2008,2009,2010,2011,2012,2013 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 <grub/disk.h>
#include <grub/partition.h>
#include <grub/msdos_partition.h>
#include <grub/types.h>
#include <grub/err.h>
#include <grub/emu/misc.h>
#include <grub/emu/hostdisk.h>
#include <grub/emu/getroot.h>
#include <grub/misc.h>
#include <grub/i18n.h>
#include <grub/list.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <assert.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <limits.h>
#include <windows.h>
#include <winioctl.h>
#include "dirname.h"
grub_int64_t
grub_util_get_fd_size_os (int fd __attribute__ ((unused)),
const char *name_in,
unsigned *log_secsize)
{
HANDLE hd;
grub_int64_t size = -1LL;
int log_sector_size = 9;
char *name = xstrdup (name_in);
if (log_secsize)
*log_secsize = log_sector_size;
strip_trailing_slashes(name);
hd = CreateFile (name, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE,
0, OPEN_EXISTING, 0, 0);
if (hd == INVALID_HANDLE_VALUE)
{
free (name);
return size;
}
if (((name[0] == '/') || (name[0] == '\\')) &&
((name[1] == '/') || (name[1] == '\\')) &&
(name[2] == '.') &&
((name[3] == '/') || (name[3] == '\\')) &&
(! strncasecmp (name + 4, "PHYSICALDRIVE", 13)))
{
DWORD nr;
DISK_GEOMETRY g;
if (! DeviceIoControl (hd, IOCTL_DISK_GET_DRIVE_GEOMETRY,
0, 0, &g, sizeof (g), &nr, 0))
goto fail;
size = g.Cylinders.QuadPart;
size *= g.TracksPerCylinder * g.SectorsPerTrack * g.BytesPerSector;
for (log_sector_size = 0;
(1 << log_sector_size) < g.BytesPerSector;
log_sector_size++);
}
else
{
ULARGE_INTEGER s;
s.LowPart = GetFileSize (hd, &s.HighPart);
size = s.QuadPart;
}
fail:
if (log_secsize)
*log_secsize = log_sector_size;
free (name);
CloseHandle (hd);
return size;
}
void
grub_hostdisk_configure_device_driver (int fd __attribute__ ((unused)))
{
}
void
grub_hostdisk_flush_initial_buffer (const char *os_dev __attribute__ ((unused)))
{
}

20
grub-core/kern/emu/hostdisk_os.c Normal file
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#ifdef __linux__
#include "hostdisk_linux.c"
#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
#include "hostdisk_freebsd.c"
#elif defined(__NetBSD__) || defined(__OpenBSD__)
#include "hostdisk_bsd.c"
#elif defined(__APPLE__)
#include "hostdisk_apple.c"
#elif defined(__sun__)
#include "hostdisk_sun.c"
#elif defined(__GNU__)
#include "hostdisk_hurd.c"
#elif defined(__CYGWIN__)
#include "hostdisk_cygwin.c"
#elif defined(__MINGW32__)
#include "hostdisk_mingw.c"
#else
# warning "No hostdisk OS-specific functions is available for your system. Device detection may not work properly."
#include "hostdisk_basic.c"
#endif

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grub-core/kern/emu/hostdisk_sun.c Normal file
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/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1999,2000,2001,2002,2003,2004,2006,2007,2008,2009,2010,2011,2012,2013 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 <grub/disk.h>
#include <grub/partition.h>
#include <grub/msdos_partition.h>
#include <grub/types.h>
#include <grub/err.h>
#include <grub/emu/misc.h>
#include <grub/emu/hostdisk.h>
#include <grub/emu/getroot.h>
#include <grub/misc.h>
#include <grub/i18n.h>
#include <grub/list.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <assert.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <limits.h>
# include <sys/dkio.h>
grub_int64_t
grub_util_get_fd_size_os (int fd, const char *name, unsigned *log_secsize)
{
struct dk_minfo minfo;
unsigned sector_size, log_sector_size;
if (!ioctl (fd, DKIOCGMEDIAINFO, &minfo))
return -1;
sector_size = minfo.dki_lbsize;
if (sector_size & (sector_size - 1) || !sector_size)
return -1;
for (log_sector_size = 0;
(1 << log_sector_size) < sector_size;
log_sector_size++);
if (log_secsize)
*log_secsize = log_sector_size;
return minfo.dki_capacity << log_sector_size;
}
void
grub_hostdisk_configure_device_driver (int fd __attribute__ ((unused)))
{
}
void
grub_hostdisk_flush_initial_buffer (const char *os_dev __attribute__ ((unused)))
{
}