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| author | Denys Vlasenko <vda.linux@googlemail.com> | 2009-10-22 00:55:55 +0200 |
|---|---|---|
| committer | Denys Vlasenko <vda.linux@googlemail.com> | 2009-10-22 00:55:55 +0200 |
| commit | 3945bc15340dc9cfa8aae0164f3baf94db6d40c3 (patch) | |
| tree | 0899d64dba6f6331df7c321db763c80a5dc40306 /util-linux | |
| parent | 481ca9604d1d367c02b9f0799a8c4328232900b5 (diff) | |
| download | busybox-w32-3945bc15340dc9cfa8aae0164f3baf94db6d40c3.tar.gz busybox-w32-3945bc15340dc9cfa8aae0164f3baf94db6d40c3.tar.bz2 busybox-w32-3945bc15340dc9cfa8aae0164f3baf94db6d40c3.zip | |
tune2fs: new applet by Vladimir. Only supports -L LABEL
function old new delta
tune2fs_main - 165 +165
packed_usage 26692 26702 +10
applet_names 2148 2156 +8
applet_main 1264 1268 +4
applet_nameofs 632 634 +2
applet_install_loc 158 159 +1
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 5/0 up/down: 190/0) Total: 190 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'util-linux')
| -rw-r--r-- | util-linux/Kbuild | 1 | ||||
| -rw-r--r-- | util-linux/tune2fs.c | 71 |
2 files changed, 72 insertions, 0 deletions
diff --git a/util-linux/Kbuild b/util-linux/Kbuild index 7befe0678..dc1d1f21d 100644 --- a/util-linux/Kbuild +++ b/util-linux/Kbuild | |||
| @@ -38,4 +38,5 @@ lib-$(CONFIG_SCRIPTREPLAY) += scriptreplay.o | |||
| 38 | lib-$(CONFIG_SETARCH) += setarch.o | 38 | lib-$(CONFIG_SETARCH) += setarch.o |
| 39 | lib-$(CONFIG_SWAPONOFF) += swaponoff.o | 39 | lib-$(CONFIG_SWAPONOFF) += swaponoff.o |
| 40 | lib-$(CONFIG_SWITCH_ROOT) += switch_root.o | 40 | lib-$(CONFIG_SWITCH_ROOT) += switch_root.o |
| 41 | lib-$(CONFIG_MKFS_EXT2) += tune2fs.o | ||
| 41 | lib-$(CONFIG_UMOUNT) += umount.o | 42 | lib-$(CONFIG_UMOUNT) += umount.o |
diff --git a/util-linux/tune2fs.c b/util-linux/tune2fs.c new file mode 100644 index 000000000..3b8f3d8ef --- /dev/null +++ b/util-linux/tune2fs.c | |||
| @@ -0,0 +1,71 @@ | |||
| 1 | /* vi: set sw=4 ts=4: */ | ||
| 2 | /* | ||
| 3 | * tune2fs: utility to modify EXT2 filesystem | ||
| 4 | * | ||
| 5 | * Busybox'ed (2009) by Vladimir Dronnikov <dronnikov@gmail.com> | ||
| 6 | * | ||
| 7 | * Licensed under GPLv2, see file LICENSE in this tarball for details. | ||
| 8 | */ | ||
| 9 | #include "libbb.h" | ||
| 10 | #include <linux/fs.h> | ||
| 11 | #include <linux/ext2_fs.h> | ||
| 12 | #include "volume_id/volume_id_internal.h" | ||
| 13 | |||
| 14 | // storage helpers | ||
| 15 | char BUG_wrong_field_size(void); | ||
| 16 | #define STORE_LE(field, value) \ | ||
| 17 | do { \ | ||
| 18 | if (sizeof(field) == 4) \ | ||
| 19 | field = cpu_to_le32(value); \ | ||
| 20 | else if (sizeof(field) == 2) \ | ||
| 21 | field = cpu_to_le16(value); \ | ||
| 22 | else if (sizeof(field) == 1) \ | ||
| 23 | field = (value); \ | ||
| 24 | else \ | ||
| 25 | BUG_wrong_field_size(); \ | ||
| 26 | } while (0) | ||
| 27 | |||
| 28 | #define FETCH_LE32(field) \ | ||
| 29 | (sizeof(field) == 4 ? cpu_to_le32(field) : BUG_wrong_field_size()) | ||
| 30 | |||
| 31 | enum { | ||
| 32 | OPT_L = 1 << 0, // label | ||
| 33 | }; | ||
| 34 | |||
| 35 | int tune2fs_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; | ||
| 36 | int tune2fs_main(int argc UNUSED_PARAM, char **argv) | ||
| 37 | { | ||
| 38 | unsigned opts; | ||
| 39 | const char *label; | ||
| 40 | struct ext2_super_block *sb; | ||
| 41 | int fd; | ||
| 42 | |||
| 43 | opt_complementary = "=1"; | ||
| 44 | opts = getopt32(argv, "L:", &label); | ||
| 45 | argv += optind; // argv[0] -- device | ||
| 46 | |||
| 47 | if (!opts) | ||
| 48 | bb_show_usage(); | ||
| 49 | |||
| 50 | // read superblock | ||
| 51 | fd = xopen(argv[0], O_RDWR); | ||
| 52 | xlseek(fd, 1024, SEEK_SET); | ||
| 53 | sb = xzalloc(1024); | ||
| 54 | xread(fd, sb, 1024); | ||
| 55 | |||
| 56 | // mangle superblock | ||
| 57 | //STORE_LE(sb->s_wtime, time(NULL)); - why bother? | ||
| 58 | // set the label | ||
| 59 | if (1 /*opts & OPT_L*/) | ||
| 60 | safe_strncpy((char *)sb->s_volume_name, label, sizeof(sb->s_volume_name)); | ||
| 61 | // write superblock | ||
| 62 | xlseek(fd, 1024, SEEK_SET); | ||
| 63 | xwrite(fd, sb, 1024); | ||
| 64 | |||
| 65 | if (ENABLE_FEATURE_CLEAN_UP) { | ||
| 66 | free(sb); | ||
| 67 | } | ||
| 68 | |||
| 69 | xclose(fd); | ||
| 70 | return EXIT_SUCCESS; | ||
| 71 | } | ||