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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>
51 lines
1.4 KiB
Diff
51 lines
1.4 KiB
Diff
From 76c465e87312dbc6cffd05427f1f4d2ebdee4f13 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 12:28:35 +0800
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Subject: [PATCH 9/9] linux/syslinux: implement install_bootblock()
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Refer to the install_bootblock() in extlinux/main.c to make
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linux/syslinux.c's install_bootblock() which only supports ext2/3/4.
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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 | 20 ++++++++++++++++++++
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1 file changed, 20 insertions(+)
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diff --git a/linux/syslinux.c b/linux/syslinux.c
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index c741750..917f83a 100755
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--- a/linux/syslinux.c
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+++ b/linux/syslinux.c
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@@ -419,6 +419,26 @@ static int ext_file_write(ext2_file_t e2_file, const void *buf, size_t count,
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*/
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int install_bootblock(int fd, const char *device)
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{
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+ struct ext2_super_block sb;
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+
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+ if (xpread(fd, &sb, sizeof sb, EXT2_SUPER_OFFSET + opt.offset) != sizeof sb) {
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+ perror("reading superblock");
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+ return 1;
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+ }
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+
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+ if (sb.s_magic != EXT2_SUPER_MAGIC) {
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+ fprintf(stderr,
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+ "no ext2/3/4 superblock found on %s\n", device);
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+ return 1;
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+ }
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+
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+ if (xpwrite(fd, syslinux_bootsect, syslinux_bootsect_len, 0)
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+ != (signed)syslinux_bootsect_len) {
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+ perror("writing bootblock");
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+ return 1;
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+ }
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+
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+ return 0;
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}
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/* The file's block count */
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--
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1.9.1
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