btrfs-progs/image
psykose c9abbf6264 btrfs-progs: stop using legacy *64 interfaces
The *64 interfaces, such as fstat64, off64_t, etc, are legacy interfaces
created at a time when 64-bit file support was still new. They are
generally exposed when defining a macro named _LARGEFILE64_SOURCE, as
e.g. the glibc docs[0] say.

The modern way to utilise largefile support, is to continue to use the
regular interfaces (off_t, fstat, ..), and define _FILE_OFFSET_BITS=64.

We already use the autoconf macro AC_SYS_LARGEFILE[1] which arranges this
and sets this macro for us. Therefore, we can utilise the non-64 names
without fear of breaking on 32-bit systems.

This fixes the build against musl libc, ever since musl dropped the
*64 compat from interfaces by default[2] just for _GNU_SOURCE, unless
_LARGEFILE64_SOURCE is defined. However, there are plans for a future
removal of the whole *64 header API, and that workaround (adding another
define) might cease to exist.

So, rename all *64 API use to the regular non-suffixed names. For
consistency, rename the internal functions that were *64 named
(lstat64_path, ..) too.

This should have no regressions on any platform.

[0]: https://www.gnu.org/software/libc/manual/html_node/Feature-Test-Macros.html#index-_005fLARGEFILE64_005fSOURCE
[1]: https://www.gnu.org/software/autoconf/manual/autoconf-2.67/html_node/System-Services.html
[2]: 25e6fee27f

Pull-request: #615
Signed-off-by: psykose <alice@ayaya.dev>
Signed-off-by: David Sterba <dsterba@suse.com>
2023-04-25 16:59:42 +02:00
..
main.c btrfs-progs: stop using legacy *64 interfaces 2023-04-25 16:59:42 +02:00
Makefile btrfs-progs: build: add stub makefile to image and mkfs 2019-07-04 15:36:01 +02:00
metadump.h btrfs-progs: image: rename BLOCK_* to IMAGE_BLOCK_* for metadump 2022-11-28 18:57:43 +01:00
sanitize.c btrfs-progs: use template for out of memory error messages 2022-10-11 09:08:09 +02:00
sanitize.h btrfs-progs: image: update include lists 2022-10-11 09:06:12 +02:00