Add to fstrim(8) code to support new discard BLKDISCARD and
BLKSECDISCARD ioctls for block devices. The new command is only
symlink to fstrim(8) as the both utils share some code and the basic
ideas.
Based on patch from Lukas Czerner <lczerner@redhat.com>.
Signed-off-by: Karel Zak <kzak@redhat.com>
This should improve a bit the portability as error() is a GNU extension and
util-linux provides fallbacks for err.h functions.
Fix compilation with icc, broken due to a reference to `__builtin_va_arg_pack'
in error.h using the -gcc default option.
Signed-off-by: Francesco Cosoleto <cosoleto@gmail.com>
Solaris lacks err, errx, warn and warnx. This also means the err.h header
doesn't exist. Removed err.h include from all files, and included err.h from
c.h instead if it exists, otherwise alternatives are provided.
Signed-off-by: Fabian Groffen <grobian@gentoo.org>
fstrim is used on a mounted filesystem to discard (or "trim") blocks
which are not in use by the filesystem. This is useful for
solid-state drives (SSDs) and thinly-provisioned storage
Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Karel Zak <kzak@redhat.com>
