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Cryptodisk write support.

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* grub-core/disk/cryptodisk.c (grub_crypto_pcbc_encrypt): New function.
	(grub_cryptodisk_decrypt): Moved logic to ...
	(grub_cryptodisk_endecrypt): ...this. New argument "encrypt".
	(grub_cryptodisk_write): Implement.
	* grub-core/kern/emu/hostdisk.c (nwrite): Rename to ...
	(grub_util_fd_write): ... this. Make global.
	* include/grub/emu/hostdisk.h (grub_util_fd_write): New proto.
This commit is contained in:
Vladimir 'phcoder' Serbinenko 2012-01-29 18:16:48 +01:00
parent 87cf97447e
commit 9c6e84b838
4 changed files with 137 additions and 28 deletions
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6
grub-core/kern/emu/hostdisk.c
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@ -958,8 +958,8 @@ grub_util_fd_read (int fd, char *buf, size_t len)
/* Write LEN bytes from BUF to FD. Return less than or equal to zero if an
error occurs, otherwise return LEN. */
static ssize_t
nwrite (int fd, const char *buf, size_t len)
ssize_t
grub_util_fd_write (int fd, const char *buf, size_t len)
{
ssize_t size = len;
@ -1062,7 +1062,7 @@ grub_util_biosdisk_write (grub_disk_t disk, grub_disk_addr_t sector,
if (fd < 0)
return grub_errno;
if (nwrite (fd, buf, size << disk->log_sector_size)
if (grub_util_fd_write (fd, buf, size << disk->log_sector_size)
!= (ssize_t) (size << disk->log_sector_size))
grub_error (GRUB_ERR_WRITE_ERROR, "cannot write to `%s'", map[disk->id].device);