1 files changed, 116 insertions, 0 deletions

diff --git a/meta/recipes-devtools/syslinux/syslinux/0003-linux-syslinux-implement-install_to_ext2.patch b/meta/recipes-devtools/syslinux/syslinux/0003-linux-syslinux-implement-install_to_ext2.patch
new file mode 100644
index 0000000000..84ba10526a
--- /dev/null
+++ b/meta/recipes-devtools/syslinux/syslinux/0003-linux-syslinux-implement-install_to_ext2.patch
@@ -0,0 +1,116 @@
+From 64d856b243812907068776b204a003a3a8fa122a Mon Sep 17 00:00:00 2001
+From: Robert Yang <liezhi.yang@windriver.com>
+Date: Wed, 31 Dec 2014 16:17:42 +0800
+Subject: [PATCH 3/9] linux/syslinux: implement install_to_ext2()
+
+* The handle_adv_on_ext() checks whether we only need update adv.
+* The write_to_ext() installs files (ldlinux.sys or ldlinux.c32) to the
+  device.
+* The install_bootblock() installs the boot block.
+
+Upstream-Status: Submitted
+
+Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
+Tested-by: Du Dolpher <dolpher.du@intel.com>
+---
+ linux/syslinux.c | 79 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 79 insertions(+)
+
+diff --git a/linux/syslinux.c b/linux/syslinux.c
+index cc4e7da..45f080d 100755
+--- a/linux/syslinux.c
++++ b/linux/syslinux.c
+@@ -346,11 +346,90 @@ static int open_ext2_fs(const char *device, const char *subdir)
+ fail:
+     (void) ext2fs_close(e2fs);
+     return -1;
++
++}
++
++/*
++ * Install the boot block on the specified device.
++ * Must be run AFTER file installed.
++ */
++int install_bootblock(int fd, const char *device)
++{
++}
++
++static int handle_adv_on_ext(void)
++{
++}
++
++/* Write files, adv, boot sector */
++static int write_to_ext(const char *filename, const char *str, int length,
++                        int i_flags, int dev_fd, const char *subdir)
++{
+ }
+ 
+ /* The install func for ext2, ext3 and ext4 */
+ static int install_to_ext2(const char *device, int dev_fd, const char *subdir)
+ {
++    int         retval;
++    ext2_ino_t  oldino;
++
++    const char *file = "ldlinux.sys";
++    const char *oldfile = "extlinux.sys";
++    const char *c32file = "ldlinux.c32";
++
++    /* Handle the adv */
++    if (handle_adv_on_ext() < 0) {
++        fprintf(stderr, "%s: error while handling ADV on %s\n",
++                program, device);
++        retval = 1;
++        goto fail;
++    }
++
++    /* Return if only need update the adv */
++    if (opt.update_only == -1) {
++        return ext2fs_close(e2fs);
++    }
++
++    /* Write ldlinux.sys, adv, boot sector */
++    retval = write_to_ext(file, (const char _force *)boot_image,
++                boot_image_len, EXT2_IMMUTABLE_FL, dev_fd, subdir);
++    if (retval) {
++        fprintf(stderr, "%s: ERROR: while writing: %s.\n",
++                program, file);
++        goto fail;
++    }
++
++    /* Write ldlinux.c32 */
++    retval = write_to_ext(c32file,
++                (const char _force *)syslinux_ldlinuxc32,
++                syslinux_ldlinuxc32_len, 0, dev_fd, subdir);
++    if (retval) {
++        fprintf(stderr, "%s: ERROR: while writing: %s.\n",
++                program, c32file);
++        goto fail;
++    }
++
++    /* Look if we have the extlinux.sys and remove it*/
++    retval = ext2fs_namei(e2fs, root, cwd, oldfile, &oldino);
++    if (retval == 0) {
++        retval = ext2fs_unlink(e2fs, cwd, oldfile, oldino, 0);
++        if (retval) {
++            fprintf(stderr, "%s: ERROR: failed to unlink: %s\n",
++                program, oldfile);
++            goto fail;
++        }
++    } else {
++        retval = 0;
++    }
++
++    sync();
++    retval = install_bootblock(dev_fd, device);
++    close(dev_fd);
++    sync();
++
++fail:
++    (void) ext2fs_close(e2fs);
++    return retval;
+ }
+ 
+ int main(int argc, char *argv[])
+-- 
+1.9.1
+