diff options
| author | Cong Wang | 2011-11-18 09:51:37 +0100 |
|---|---|---|
| committer | Karel Zak | 2011-11-23 13:12:48 +0100 |
| commit | 411fd3c27aed72c50677aaf006ebfa6df39a1cfc (patch) | |
| tree | b40cc09d92913b9c8fda2eb1c713e8bbc0177e7c /sys-utils/fallocate.c | |
| parent | prlimit: s/amount/number/ (diff) | |
| download | kernel-qcow2-util-linux-411fd3c27aed72c50677aaf006ebfa6df39a1cfc.tar.gz kernel-qcow2-util-linux-411fd3c27aed72c50677aaf006ebfa6df39a1cfc.tar.xz kernel-qcow2-util-linux-411fd3c27aed72c50677aaf006ebfa6df39a1cfc.zip | |
fallocate: add FALLOC_FL_PUNCH_HOLE support
Recent Linux kernel supports FALLOC_FL_PUNCH_HOLE in fallocate(2).
This patch adds FALLOC_FL_PUNCH_HOLE support to fallocate utility,
by introducing a new option -p|--punch-hole.
[kzak@redhat.com: - fix merge conflict in fallocate.1]
Cc: Karel Zak <kzak@redhat.com>
Cc: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'sys-utils/fallocate.c')
| -rw-r--r-- | sys-utils/fallocate.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sys-utils/fallocate.c b/sys-utils/fallocate.c index 13d7277fe..b58485a78 100644 --- a/sys-utils/fallocate.c +++ b/sys-utils/fallocate.c @@ -40,6 +40,7 @@ # include <linux/falloc.h> /* for FALLOC_FL_* flags */ #else # define FALLOC_FL_KEEP_SIZE 1 +# define FALLOC_FL_PUNCH_HOLE 2 #endif #include "nls.h" @@ -57,6 +58,7 @@ static void __attribute__((__noreturn__)) usage(FILE *out) fputs(_("\nOptions:\n"), out); fputs(_(" -h, --help this help\n" " -n, --keep-size don't modify the length of the file\n" + " -p, --punch-hole punch holes in the file\n" " -o, --offset <num> offset of the allocation, in bytes\n" " -l, --length <num> length of the allocation, in bytes\n"), out); @@ -88,6 +90,7 @@ int main(int argc, char **argv) static const struct option longopts[] = { { "help", 0, 0, 'h' }, { "keep-size", 0, 0, 'n' }, + { "punch-hole", 0, 0, 'p' }, { "offset", 1, 0, 'o' }, { "length", 1, 0, 'l' }, { NULL, 0, 0, 0 } @@ -97,11 +100,14 @@ int main(int argc, char **argv) bindtextdomain(PACKAGE, LOCALEDIR); textdomain(PACKAGE); - while ((c = getopt_long(argc, argv, "hnl:o:", longopts, NULL)) != -1) { + while ((c = getopt_long(argc, argv, "hnpl:o:", longopts, NULL)) != -1) { switch(c) { case 'h': usage(stdout); break; + case 'p': + mode |= FALLOC_FL_PUNCH_HOLE; + /* fall through */ case 'n': mode |= FALLOC_FL_KEEP_SIZE; break; |