From 40e7d25aca1abbe080e00e2bed64b444a5ec7858 Mon Sep 17 00:00:00 2001 From: Denys Vlasenko Date: Mon, 1 Feb 2010 23:48:27 +0100 Subject: mkXXXX: unify [KBYTES] parameter handling (added it to mkswap) Signed-off-by: Denys Vlasenko --- util-linux/mkfs_ext2.c | 14 +------------- util-linux/mkfs_reiser.c | 15 ++------------- util-linux/mkfs_vfat.c | 14 ++------------ util-linux/mkswap.c | 16 ++++++---------- 4 files changed, 11 insertions(+), 48 deletions(-) (limited to 'util-linux') diff --git a/util-linux/mkfs_ext2.c b/util-linux/mkfs_ext2.c index 19c3c67..44fb402 100644 --- a/util-linux/mkfs_ext2.c +++ b/util-linux/mkfs_ext2.c @@ -230,19 +230,7 @@ int mkfs_ext2_main(int argc UNUSED_PARAM, char **argv) bb_error_msg_and_die("can't format mounted filesystem"); // open the device, get size in kbytes - if (argv[1]) { - kilobytes = xatoull(argv[1]); - // seek past end fails on block devices but works on files - if (lseek(fd, kilobytes * 1024 - 1, SEEK_SET) != (off_t)-1) { - if (!(option_mask32 & OPT_n)) - xwrite(fd, "", 1); // file grows if needed - } - //else { - // bb_error_msg("warning, block device is smaller"); - //} - } else { - kilobytes = (uoff_t)xlseek(fd, 0, SEEK_END) / 1024; - } + kilobytes = get_volume_size_in_bytes(fd, argv[1], 1024, /*extend:*/ !(option_mask32 & OPT_n)) / 1024; bytes_per_inode = 16384; if (kilobytes < 512*1024) diff --git a/util-linux/mkfs_reiser.c b/util-linux/mkfs_reiser.c index 7f37eb8..eb2c94d 100644 --- a/util-linux/mkfs_reiser.c +++ b/util-linux/mkfs_reiser.c @@ -175,23 +175,12 @@ int mkfs_reiser_main(int argc UNUSED_PARAM, char **argv) // check if it is mounted // N.B. what if we format a file? find_mount_point will return false negative since - // it is loop block device which mounted! + // it is loop block device which is mounted! if (find_mount_point(argv[0], 0)) bb_error_msg_and_die("can't format mounted filesystem"); // open the device, get size in blocks - if (argv[1]) { - blocks = xatoull(argv[1]); - // seek past end fails on block devices but works on files - if (lseek(fd, blocks * blocksize - 1, SEEK_SET) != (off_t)-1) { - xwrite(fd, "", 1); // file grows if needed - } - //else { - // bb_error_msg("warning, block device is smaller"); - //} - } else { - blocks = (uoff_t)xlseek(fd, 0, SEEK_END) / blocksize; - } + blocks = get_volume_size_in_bytes(fd, argv[1], blocksize, /*extend:*/ 1) / blocksize; // block number sanity check // we have a limit: skipped area, super block, journal and root block diff --git a/util-linux/mkfs_vfat.c b/util-linux/mkfs_vfat.c index a9a65aa..1363612 100644 --- a/util-linux/mkfs_vfat.c +++ b/util-linux/mkfs_vfat.c @@ -244,7 +244,7 @@ int mkfs_vfat_main(int argc UNUSED_PARAM, char **argv) // default volume ID = creation time volume_id = time(NULL); - dev = xopen(device_name, O_EXCL | O_RDWR); + dev = xopen(device_name, O_RDWR); if (fstat(dev, &st) < 0) bb_simple_perror_msg_and_die(device_name); @@ -252,7 +252,6 @@ int mkfs_vfat_main(int argc UNUSED_PARAM, char **argv) // Get image size and sector size // bytes_per_sect = SECTOR_SIZE; - volume_size_bytes = st.st_size; if (!S_ISBLK(st.st_mode)) { if (!S_ISREG(st.st_mode)) { if (!argv[1]) @@ -262,10 +261,6 @@ int mkfs_vfat_main(int argc UNUSED_PARAM, char **argv) opts &= ~OPT_c; } else { int min_bytes_per_sect; - - // more portable than BLKGETSIZE[64] - volume_size_bytes = xlseek(dev, 0, SEEK_END); - xlseek(dev, 0, SEEK_SET); #if 0 unsigned device_num; // for true block devices we do check sanity @@ -290,12 +285,7 @@ int mkfs_vfat_main(int argc UNUSED_PARAM, char **argv) bb_error_msg("for this device sector size is %u", min_bytes_per_sect); } } - if (argv[1]) { - volume_size_bytes = XATOOFF(argv[1]); - if (volume_size_bytes >= MAXINT(off_t) / 1024) - bb_error_msg_and_die("image size is too big"); - volume_size_bytes *= 1024; - } + volume_size_bytes = get_volume_size_in_bytes(dev, argv[1], 1024, /*extend:*/ 1); volume_size_sect = volume_size_bytes / bytes_per_sect; // diff --git a/util-linux/mkswap.c b/util-linux/mkswap.c index 289692d..949c71a 100644 --- a/util-linux/mkswap.c +++ b/util-linux/mkswap.c @@ -86,23 +86,19 @@ int mkswap_main(int argc UNUSED_PARAM, char **argv) off_t len; const char *label = ""; - opt_complementary = "=1"; - /* TODO: -p PAGESZ, -U UUID, - * optional SIZE_IN_KB 2nd param - */ + opt_complementary = "-1"; /* at least one param */ + /* TODO: -p PAGESZ, -U UUID */ getopt32(argv, "L:", &label); argv += optind; fd = xopen(argv[0], O_WRONLY); - /* Figure out how big the device is and announce our intentions */ - /* fdlength was reported to be unreliable - use seek */ - len = xlseek(fd, 0, SEEK_END); - if (ENABLE_SELINUX) - xlseek(fd, 0, SEEK_SET); - + /* Figure out how big the device is */ + len = get_volume_size_in_bytes(fd, argv[1], 1024, /*extend:*/ 1); pagesize = getpagesize(); len -= pagesize; + + /* Announce our intentions */ printf("Setting up swapspace version 1, size = %"OFF_FMT"u bytes\n", len); mkswap_selinux_setcontext(fd, argv[0]); -- cgit v1.1