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Merge mainline into emu-modload

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2010-04-10 01:25:46 +02:00
commit a29e902132
221 changed files with 25351 additions and 6226 deletions
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161
util/hostdisk.c
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@ -26,6 +26,7 @@
#include <grub/util/hostdisk.h>
#include <grub/misc.h>
#include <grub/i18n.h>
#include <grub/list.h>
#include <stdio.h>
#include <stdlib.h>
@ -103,6 +104,13 @@ struct
char *device;
} map[256];
struct grub_util_biosdisk_data
{
char *dev;
int access_mode;
int fd;
};
#ifdef __linux__
/* Check if we have devfs support. */
static int
@ -165,6 +173,7 @@ grub_util_biosdisk_open (const char *name, grub_disk_t disk)
{
int drive;
struct stat st;
struct grub_util_biosdisk_data *data;
drive = find_grub_drive (name);
if (drive < 0)
@ -173,6 +182,10 @@ grub_util_biosdisk_open (const char *name, grub_disk_t disk)
disk->has_partitions = 1;
disk->id = drive;
disk->data = data = xmalloc (sizeof (struct grub_util_biosdisk_data));
data->dev = NULL;
data->access_mode = 0;
data->fd = -1;
/* Get the size. */
#if defined(__MINGW32__)
@ -254,6 +267,17 @@ grub_util_biosdisk_open (const char *name, grub_disk_t disk)
}
#ifdef __linux__
/* Cache of partition start sectors for each disk. */
struct linux_partition_cache
{
struct linux_partition_cache *next;
char *dev;
unsigned long start;
int partno;
};
struct linux_partition_cache *linux_partition_cache_list;
static int
linux_find_partition (char *dev, unsigned long sector)
{
@ -262,6 +286,7 @@ linux_find_partition (char *dev, unsigned long sector)
char *p;
int i;
char real_dev[PATH_MAX];
struct linux_partition_cache *cache;
strcpy(real_dev, dev);
@ -281,6 +306,16 @@ linux_find_partition (char *dev, unsigned long sector)
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;
@ -301,6 +336,15 @@ linux_find_partition (char *dev, unsigned long sector)
if (hdg.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 = hdg.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;
}
@ -314,6 +358,7 @@ static int
open_device (const grub_disk_t disk, grub_disk_addr_t sector, int flags)
{
int fd;
struct grub_util_biosdisk_data *data = disk->data;
#ifdef O_LARGEFILE
flags |= O_LARGEFILE;
@ -334,27 +379,47 @@ open_device (const grub_disk_t disk, grub_disk_addr_t sector, int flags)
{
int is_partition = 0;
char dev[PATH_MAX];
grub_disk_addr_t part_start = 0;
part_start = grub_partition_get_start (disk->partition);
strcpy (dev, map[disk->id].device);
if (disk->partition && sector >= disk->partition->start
if (disk->partition && sector >= part_start
&& strncmp (map[disk->id].device, "/dev/", 5) == 0)
is_partition = linux_find_partition (dev, disk->partition->start);
is_partition = linux_find_partition (dev, part_start);
/* Open the partition. */
grub_dprintf ("hostdisk", "opening the device `%s' in open_device()\n", dev);
fd = open (dev, flags);
if (fd < 0)
if (data->dev && strcmp (data->dev, dev) == 0 &&
data->access_mode == (flags & O_ACCMODE))
{
grub_error (GRUB_ERR_BAD_DEVICE, "cannot open `%s'", dev);
return -1;
grub_dprintf ("hostdisk", "reusing open device `%s'\n", dev);
fd = data->fd;
}
else
{
free (data->dev);
if (data->fd != -1)
close (data->fd);
/* Open the partition. */
grub_dprintf ("hostdisk", "opening the device `%s' in open_device()\n", dev);
fd = open (dev, flags);
if (fd < 0)
{
grub_error (GRUB_ERR_BAD_DEVICE, "cannot open `%s'", dev);
return -1;
}
/* Flush the buffer cache to the physical disk.
XXX: This also empties the buffer cache. */
ioctl (fd, BLKFLSBUF, 0);
data->dev = xstrdup (dev);
data->access_mode = (flags & O_ACCMODE);
data->fd = fd;
}
/* Flush the buffer cache to the physical disk.
XXX: This also empties the buffer cache. */
ioctl (fd, BLKFLSBUF, 0);
if (is_partition)
sector -= disk->partition->start;
sector -= part_start;
}
#else /* ! __linux__ */
#if defined (__FreeBSD__) || defined(__FreeBSD_kernel__)
@ -375,7 +440,26 @@ open_device (const grub_disk_t disk, grub_disk_addr_t sector, int flags)
}
#endif
fd = open (map[disk->id].device, flags);
if (data->dev && strcmp (data->dev, map[disk->id].device) == 0 &&
data->access_mode == (flags & O_ACCMODE))
{
grub_dprintf ("hostdisk", "reusing open device `%s'\n", data->dev);
fd = data->fd;
}
else
{
free (data->dev);
if (data->fd != -1)
close (data->fd);
fd = open (map[disk->id].device, flags);
if (fd >= 0)
{
data->dev = xstrdup (map[disk->id].device);
data->access_mode = (flags & O_ACCMODE);
data->fd = fd;
}
}
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
if (! (sysctl_oldflags & 0x10)
@ -535,7 +619,6 @@ grub_util_biosdisk_read (grub_disk_t disk, grub_disk_addr_t sector,
!= (ssize_t) (size << GRUB_DISK_SECTOR_BITS))
grub_error (GRUB_ERR_READ_ERROR, "cannot read from `%s'", map[disk->id].device);
close (fd);
return grub_errno;
}
@ -570,17 +653,27 @@ grub_util_biosdisk_write (grub_disk_t disk, grub_disk_addr_t sector,
!= (ssize_t) (size << GRUB_DISK_SECTOR_BITS))
grub_error (GRUB_ERR_WRITE_ERROR, "cannot write to `%s'", map[disk->id].device);
close (fd);
return grub_errno;
}
static void
grub_util_biosdisk_close (struct grub_disk *disk)
{
struct grub_util_biosdisk_data *data = disk->data;
free (data->dev);
if (data->fd != -1)
close (data->fd);
free (data);
}
static struct grub_disk_dev grub_util_biosdisk_dev =
{
.name = "biosdisk",
.id = GRUB_DISK_DEVICE_BIOSDISK_ID,
.iterate = grub_util_biosdisk_iterate,
.open = grub_util_biosdisk_open,
.close = 0,
.close = grub_util_biosdisk_close,
.read = grub_util_biosdisk_read,
.write = grub_util_biosdisk_write,
.next = 0
@ -987,39 +1080,25 @@ grub_util_biosdisk_get_grub_dev (const char *os_dev)
int find_partition (grub_disk_t dsk __attribute__ ((unused)),
const grub_partition_t partition)
{
struct grub_msdos_partition *pcdata = NULL;
grub_disk_addr_t part_start = 0;
grub_util_info ("Partition %d starts from %lu",
partition->number, partition->start);
if (strcmp (partition->partmap->name, "part_msdos") == 0)
pcdata = partition->data;
part_start = grub_partition_get_start (partition);
if (pcdata)
if (hdg.start == part_start)
{
if (pcdata->bsd_part < 0)
grub_util_info ("DOS partition %d starts from %lu",
pcdata->dos_part, partition->start);
else
grub_util_info ("BSD partition %d,%c starts from %lu",
pcdata->dos_part, pcdata->bsd_part + 'a',
partition->start);
}
else
{
grub_util_info ("Partition %d starts from %lu",
partition->index, partition->start);
}
if (hdg.start == partition->start)
{
if (pcdata)
if (partition->parent)
{
dos_part = pcdata->dos_part;
bsd_part = pcdata->bsd_part;
dos_part = partition->parent->number;
bsd_part = partition->number;
}
else
{
dos_part = partition->index;
dos_part = partition->number;
bsd_part = -1;
}
return 1;
}