diff options
Diffstat (limited to 'extlinux/main.c')
| -rw-r--r-- | extlinux/main.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/extlinux/main.c b/extlinux/main.c index bbcc8db3..d1a800cd 100644 --- a/extlinux/main.c +++ b/extlinux/main.c @@ -14,7 +14,8 @@ /* * extlinux.c * - * Install the syslinux boot block on an fat, ntfs, ext2/3/4 and btrfs filesystem + * Install the syslinux boot block on an fat, ntfs, ext2/3/4, btrfs and xfs + * filesystem. */ #define _GNU_SOURCE /* Enable everything */ @@ -49,6 +50,7 @@ #include "xfs.h" #include "xfs_types.h" #include "xfs_sb.h" +#include "misc.h" #include "../version.h" #include "syslxint.h" #include "syslxcom.h" /* common functions shared with extlinux and syslinux */ @@ -71,7 +73,8 @@ * we will use the first 0~512 bytes starting from 2048 for the Syslinux * boot sector. */ -#define XFS_BOOTSECT_OFFSET 4 * SECTOR_SIZE +#define XFS_BOOTSECT_OFFSET (4 << SECTOR_SHIFT) +#define XFS_SUPPORTED_BLOCKSIZE 4096 /* 4 KiB filesystem block size */ /* the btrfs partition first 64K blank area is used to store boot sector and boot image, the boot sector is from 0~512, the boot image starts after */ @@ -379,8 +382,19 @@ int install_bootblock(int fd, const char *device) return 1; } - if (sb5.sb_magicnum == *(u32 *)XFS_SB_MAGIC) + if (sb5.sb_magicnum == *(u32 *)XFS_SB_MAGIC) { + if (be32_to_cpu(sb5.sb_blocksize) != XFS_SUPPORTED_BLOCKSIZE) { + fprintf(stderr, + "You need to have 4 KiB filesystem block size for " + " being able to install Syslinux in your XFS " + "partition (because there is no enough space in MBR to " + "determine where Syslinux bootsector can be installed " + "regardless the filesystem block size)\n"); + return 1; + } + ok = true; + } } if (!ok) { |