Adrian Schröter 2008-02-10 16:59:06 +00:00 committed by Git OBS Bridge
parent 08e0b41ef1
commit 62331c53cc

View File

@ -1,65 +0,0 @@
X-Gnus-Coding-System: -*- coding: utf-8; -*-
Minix filesystem until version 2 has a fixed blocksize of 1024 bytes.
If you try to create a filsystem on a device with a physical sectorsize
larger than 1024 bytes, this resulting minix fs cannot be mounted,
because the physical sectorsize must be smaller than the filesystem
blocksize.
This patch adds a check for this and will refuse to create a filesystem
if the sectorsize is bigger than the blocksize.
Signed-off-by: Matthias Koenig <mkoenig@suse.de>
---
disk-utils/Makefile.am | 4 +++-
disk-utils/mkfs.minix.c | 12 ++++++++++--
2 files changed, 13 insertions(+), 3 deletions(-)
Index: util-linux-ng-2.13.1/disk-utils/mkfs.minix.c
===================================================================
--- util-linux-ng-2.13.1.orig/disk-utils/mkfs.minix.c
+++ util-linux-ng-2.13.1/disk-utils/mkfs.minix.c
@@ -78,6 +78,7 @@
#ifndef BLKGETSIZE
#define BLKGETSIZE _IO(0x12,96) /* return device size */
#endif
+#define BLKSSZGET _IO(0x12,104)/* get block device sector size */
#ifndef __GNUC__
#error "needs gcc for the bitop-__asm__'s"
@@ -238,6 +239,16 @@ get_size(const char *file) {
return size;
}
+/* get hardware sector size */
+int
+blkdev_get_sector_size(int fd, int *sector_size)
+{
+ if (ioctl(fd, BLKSSZGET, sector_size) >= 0)
+ return 0;
+
+ return -1;
+}
+
static void
write_tables(void) {
/* Mark the super block valid. */
@@ -707,9 +718,16 @@ main(int argc, char ** argv) {
DEV = open(device_name,O_RDWR);
if (DEV<0)
die(_("unable to open %s"));
- if (!S_ISBLK(statbuf.st_mode))
+ if (S_ISBLK(statbuf.st_mode)) {
+ int sectorsize;
+
+ if (blkdev_get_sector_size(DEV, &sectorsize) == -1)
+ die(_("cannot determine sector size for %s"));
+ if (BLOCK_SIZE < sectorsize)
+ die(_("block size smaller than physical sector size of %s"));
+ } else if (!S_ISBLK(statbuf.st_mode)) {
check=0;
- else if (statbuf.st_rdev == 0x0300 || statbuf.st_rdev == 0x0340)
+ } else if (statbuf.st_rdev == 0x0300 || statbuf.st_rdev == 0x0340)
die(_("will not try to make filesystem on '%s'"));
setup_tables();
if (check)