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a2bfd4b1fb
* Support ext2/3/4 deivce. * The open_ext2_fs() checks whether it is an ext2/3/4 device, do the ext2/3/4 installation (install_to_ext2()) if yes, otherwise go on to the fat/ntfs. * The ext2/3/4 support doesn't require root privileges since it doesn't need mount (but write permission is required). Next: * Get rid of fat filesystem from the boot image. These patches have been sent to upstream, we may adjust them (maybe put the extX support to syslinux-mtools), I will go on working with the upstream. (From OE-Core rev: d5af8539c0a1718a7254bcdcfa973e3c887dfbd6) Signed-off-by: Robert Yang <liezhi.yang@windriver.com> Signed-off-by: Ross Burton <ross.burton@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
85 lines
2.4 KiB
Diff
85 lines
2.4 KiB
Diff
From a95b831e18dd123f859bc5e6c4cecdcc0184ee37 Mon Sep 17 00:00:00 2001
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From: Robert Yang <liezhi.yang@windriver.com>
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Date: Fri, 2 Jan 2015 12:18:02 +0800
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Subject: [PATCH 7/9] linux/syslinux: implement ext_construct_sectmap_fs()
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The ext_construct_sectmap_fs() constucts the sector according to the
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bmap.
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Upstream-Status: Submitted
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Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
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Tested-by: Du Dolpher <dolpher.du@intel.com>
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---
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linux/syslinux.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
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1 file changed, 50 insertions(+)
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diff --git a/linux/syslinux.c b/linux/syslinux.c
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index f0c97a8..c741750 100755
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--- a/linux/syslinux.c
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+++ b/linux/syslinux.c
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@@ -421,10 +421,60 @@ int install_bootblock(int fd, const char *device)
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{
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}
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+/* The file's block count */
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+int block_count = 0;
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+static int get_block_count(ext2_filsys fs EXT2FS_ATTR((unused)),
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+ blk64_t *blocknr EXT2FS_ATTR((unused)),
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+ e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
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+ blk64_t ref_block EXT2FS_ATTR((unused)),
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+ int ref_offset EXT2FS_ATTR((unused)),
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+ void *private EXT2FS_ATTR((unused)))
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+{
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+ block_count++;
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+ return 0;
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+}
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+
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/* Construct the boot file map */
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int ext_construct_sectmap_fs(ext2_filsys fs, ext2_ino_t newino,
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sector_t *sectors, int nsect)
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{
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+ blk64_t pblk, blksize, blk = 0;
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+ sector_t sec;
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+ unsigned int i;
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+ int retval;
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+
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+ blksize = fs->blocksize;
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+ blksize >>= SECTOR_SHIFT;
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+
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+ /* Get the total blocks no. */
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+ retval = ext2fs_block_iterate3(fs, newino, BLOCK_FLAG_READ_ONLY,
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+ NULL, get_block_count, NULL);
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+ if (retval) {
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+ fprintf(stderr, "%s: ERROR: ext2fs_block_iterate3() failed.\n", program);
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+ return -1;
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+ }
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+
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+ while (nsect) {
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+ if (block_count-- == 0)
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+ break;
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+
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+ /* Get the physical block no. (bmap) */
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+ retval = ext2fs_bmap2(fs, newino, 0, 0, 0, blk, 0, &pblk);
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+ if (retval) {
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+ fprintf(stderr, "%s: ERROR: ext2fs_bmap2() failed.\n", program);
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+ return -1;
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+ }
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+
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+ blk++;
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+ sec = (sector_t)pblk * blksize;
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+ for (i = 0; i < blksize; i++) {
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+ *sectors++ = sec++;
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+ if (! --nsect)
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+ break;
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+ }
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+ }
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+
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+ return 0;
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}
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static int handle_adv_on_ext(void)
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--
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1.9.1
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