forked from pool/util-linux
104 lines
2.7 KiB
Diff
104 lines
2.7 KiB
Diff
Index: util-linux-ng-2.13.1/disk-utils/mkfs.minix.c
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===================================================================
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--- util-linux-ng-2.13.1.orig/disk-utils/mkfs.minix.c
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+++ util-linux-ng-2.13.1/disk-utils/mkfs.minix.c
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@@ -78,6 +78,7 @@
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#ifndef BLKGETSIZE
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#define BLKGETSIZE _IO(0x12,96) /* return device size */
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#endif
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+#define BLKGETSIZE64 _IOR(0x12,114,size_t) /* return device size in bytes (u64 *arg) */
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#define BLKSSZGET _IO(0x12,104)/* get block device sector size */
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#ifndef __GNUC__
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@@ -103,7 +104,7 @@
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static char * program_name = "mkfs";
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static char * device_name = NULL;
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static int DEV = -1;
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-static long BLOCKS = 0;
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+static unsigned long long BLOCKS = 0;
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static int check = 0;
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static int badblocks = 0;
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static int namelen = 30; /* default (changed to 30, per Linus's
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@@ -219,24 +220,21 @@ count_blocks (int fd) {
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return (low + 1);
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}
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-static int
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-get_size(const char *file) {
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- int fd;
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- long size;
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-
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- fd = open(file, O_RDWR);
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- if (fd < 0) {
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- perror(file);
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- exit(1);
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- }
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+/* get size in bytes */
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+int
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+blkdev_get_size(int fd, unsigned long long *bytes)
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+{
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+ unsigned long size;
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+
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+ if (ioctl(fd, BLKGETSIZE64, bytes) >= 0)
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+ return 0;
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+
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if (ioctl(fd, BLKGETSIZE, &size) >= 0) {
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- close(fd);
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- return (size * 512);
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+ *bytes = ((unsigned long long)size << 9);
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+ return 0;
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}
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-
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- size = count_blocks(fd);
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- close(fd);
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- return size;
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+
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+ return -1;
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}
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/* get hardware sector size */
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@@ -687,19 +685,9 @@ main(int argc, char ** argv) {
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}
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}
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- if (device_name && !BLOCKS)
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- BLOCKS = get_size (device_name) / 1024;
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- if (!device_name || BLOCKS<10) {
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+ if (!device_name) {
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usage();
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}
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- if (version2) {
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- if (namelen == 14)
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- magic = MINIX2_SUPER_MAGIC;
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- else
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- magic = MINIX2_SUPER_MAGIC2;
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- } else
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- if (BLOCKS > 65535)
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- BLOCKS = 65535;
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check_mount(); /* is it already mounted? */
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tmp = root_block;
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*(short *)tmp = 1;
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@@ -725,10 +713,22 @@ main(int argc, char ** argv) {
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die(_("cannot determine sector size for %s"));
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if (BLOCK_SIZE < sectorsize)
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die(_("block size smaller than physical sector size of %s"));
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+ if (!BLOCKS && blkdev_get_size(DEV, &BLOCKS) == -1)
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+ die(_("cannot determine size of %s"));
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} else if (!S_ISBLK(statbuf.st_mode)) {
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check=0;
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} else if (statbuf.st_rdev == 0x0300 || statbuf.st_rdev == 0x0340)
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die(_("will not try to make filesystem on '%s'"));
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+ if (BLOCKS < 10)
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+ die(_("number of blocks too small"));
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+ if (version2) {
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+ if (namelen == 14)
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+ magic = MINIX2_SUPER_MAGIC;
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+ else
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+ magic = MINIX2_SUPER_MAGIC2;
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+ } else
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+ if (BLOCKS > 65535)
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+ BLOCKS = 65535;
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setup_tables();
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if (check)
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check_blocks();
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