busybox-w32/util-linux/volume_id/util.c, branch long_paths

volume_id: improve handling of too-small (usually zero-byte or erroring) blockdevs

2026-02-04T14:59:33+00:00

function old new delta volume_id_get_buffer 327 372 +45 volume_id_open_node 17 24 +7 volume_id_probe_all 133 123 -10 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/1 up/down: 52/-10) Total: 42 bytes Signed-off-by: Denys Vlasenko

volume_id: volume_id_get_buffer with small FSes

2026-02-04T12:30:24+00:00

I was working with some very small ext4 filesystems, used for overlaying on immutable VM/container images. If it's only desired to overlay a single config file, these filesystems can be very small indeed, and so ran afoul of this length check. Since 4fc5ec56f ("device matching against UUIDs: do not try floppies") (from 2009), floppy drives are skipped before this function is even called. Reading from an unused loop device returns 0, so it should be fine to reduce the minimum length. Signed-off-by: Alyssa Ross via busybox Signed-off-by: Denys Vlasenko

uuidgen: move UUID formatting to libbb

2026-02-03T08:10:25+00:00

function old new delta format_uuid_DCE_37_chars - 94 +94 uuidgen_main 71 53 -18 .rodata 107089 107066 -23 mkswap_main 278 253 -25 volume_id_set_uuid 258 178 -80 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/4 up/down: 94/-146) Total: -52 bytes Signed-off-by: Denys Vlasenko

whitespace fixes. no code changes

2013-01-14T00:34:48+00:00

Signed-off-by: Denys Vlasenko

volume_id: uuid_format small code shrink

2013-01-13T23:52:03+00:00

function old new delta volume_id_set_uuid 318 300 -18 Signed-off-by: Sven-Göran Bergh Signed-off-by: Denys Vlasenko

volume_id: display hfs[+] 128-bit UUID properly

2013-01-13T23:37:00+00:00

Signed-off-by: Sven-Göran Bergh Signed-off-by: Denys Vlasenko

volume_id: code shrink

2012-09-02T13:33:47+00:00

function old new delta volume_id_set_unicode16 200 173 -27 Signed-off-by: Denys Vlasenko

volume_id: abort early on read failures.

2009-02-15T05:51:19+00:00

should help with probing missing fdd's

volume_id/fat: careful with sector#, it may not fit in 32 bits. +91 bytes

2008-11-30T17:41:31+00:00

volume_id/*: a bit of code shrink

findfs: fix LUKS and FAT detection routines; do not exit if corrupted

2008-10-12T11:17:49+00:00

FAT fs makes us try to seek past volume function old new delta volume_id_get_buffer 301 327 +26 volume_id_probe_luks 79 82 +3 get_attr_volume_id 73 65 -8 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/1 up/down: 29/-8) Total: 21 bytes