btrfs-progs/convert
Rosen Penev e4df433b8a btrfs-progs: treewide: Replace strerror(errno) with %m.
As btrfs is specific to Linux, %m can be used instead of strerror(errno)
in format strings. This has some size reduction benefits for embedded
systems.

glibc, musl, and uclibc-ng all support %m as a modifier to printf.
A quick glance at the BIONIC libc source indicates that it has
support for %m as well. BSDs and Windows do not but I do believe
them to be beyond the scope of btrfs-progs.

Compiled sizes on Ubuntu 16.04:

Before:
3916512 btrfs
233688  libbtrfs.so.0.1
4899    bcp
2367672 btrfs-convert
2208488 btrfs-corrupt-block
13302   btrfs-debugfs
2152160 btrfs-debug-tree
2136024 btrfs-find-root
2287592 btrfs-image
2144600 btrfs-map-logical
2130760 btrfs-select-super
2152608 btrfstune
2131760 btrfs-zero-log
2277752 mkfs.btrfs
9166    show-blocks

After:
3908744 btrfs
233256  libbtrfs.so.0.1
4899    bcp
2366560 btrfs-convert
2207432 btrfs-corrupt-block
13302   btrfs-debugfs
2151104 btrfs-debug-tree
2134968 btrfs-find-root
2281864 btrfs-image
2143536 btrfs-map-logical
2129704 btrfs-select-super
2151552 btrfstune
2130696 btrfs-zero-log
2276272 mkfs.btrfs
9166    show-blocks

Total savings: 23928 (24 kilo)bytes

Signed-off-by: Rosen Penev <rosenp@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2018-01-31 15:14:03 +01:00
..
common.c btrfs-progs: Remove deprecated leafsize usage 2017-07-03 13:35:10 +02:00
common.h btrfs-progs: convert: widen int types in convert context 2017-06-26 17:09:53 +02:00
main.c btrfs-progs: treewide: Replace strerror(errno) with %m. 2018-01-31 15:14:03 +01:00
Makefile btrfs-progs: build: add stub makefile to convert 2017-03-08 13:00:46 +01:00
source-ext2.c btrfs-progs: convert: use correct string printing for errcode_t 2017-09-25 15:17:21 +02:00
source-ext2.h btrfs-progs: convert: move duplicated acl code to common header 2017-09-08 16:15:05 +02:00
source-fs.c btrfs-progs: convert: move and rename dev_t helpers to common file 2017-09-08 16:15:05 +02:00
source-fs.h btrfs-progs: convert: add missing types header 2017-11-14 15:59:01 +01:00
source-reiserfs.c btrfs-progs: add crude error handling when transaction start fails 2017-09-08 16:15:05 +02:00
source-reiserfs.h btrfs-progs: convert: move reiserfs struct definitions to header 2017-09-08 16:15:05 +02:00