From d6d3705f82cda7c1c83166bc9900b5dc8f5b2ad8 Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Thu, 31 Jul 2014 16:03:26 -0500 Subject: [CHANGE 04/31] qemu-io: New command map To: rhvirt-patches@redhat.com, jen@redhat.com RH-Author: Kevin Wolf Message-id: <1406822631-6570-5-git-send-email-kwolf@redhat.com> Patchwork-id: 60364 O-Subject: [RHEL-6.6 qemu-kvm PATCH v3 04/29] qemu-io: New command map Bugzilla: 1122410 RH-Acked-by: Stefan Hajnoczi RH-Acked-by: Jeffrey Cody RH-Acked-by: Max Reitz The new map command in qemu-io lists all allocated/unallocated areas in an image file. Signed-off-by: Kevin Wolf (cherry picked from commit 191c2890ddc9626d35c9e432494e1699a8181025) Signed-off-by: jen Conflicts: qemu-io.c Conflicts because of style changes (tab conversion etc.) Signed-off-by: Kevin Wolf Signed-off-by: jen --- qemu-io.c | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) diff --git a/qemu-io.c b/qemu-io.c index df1ed94..58611d8 100644 --- a/qemu-io.c +++ b/qemu-io.c @@ -1337,6 +1337,44 @@ static const cmdinfo_t alloc_cmd = { .oneline = "checks if a sector is present in the file", }; +static int +map_f(int argc, char **argv) +{ + int64_t offset; + int64_t nb_sectors; + char s1[64]; + int num, num_checked; + int ret; + const char *retstr; + + offset = 0; + nb_sectors = bs->total_sectors; + + do { + num_checked = MIN(nb_sectors, INT_MAX); + ret = bdrv_is_allocated(bs, offset, num_checked, &num); + retstr = ret ? " allocated" : "not allocated"; + cvtstr(offset << 9ULL, s1, sizeof(s1)); + printf("[% 24" PRId64 "] % 8d/% 8d sectors %s at offset %s (%d)\n", + offset << 9ULL, num, num_checked, retstr, s1, ret); + + offset += num; + nb_sectors -= num; + } while(offset < bs->total_sectors); + + return 0; +} + +static const cmdinfo_t map_cmd = { + .name = "map", + .argmin = 0, + .argmax = 0, + .cfunc = map_f, + .args = "", + .oneline = "prints the allocated areas of a file", +}; + + static int close_f(int argc, char **argv) { bdrv_close(bs); @@ -1577,6 +1615,7 @@ int main(int argc, char **argv) add_command(&length_cmd); add_command(&info_cmd); add_command(&alloc_cmd); + add_command(&map_cmd); add_args_command(init_args_command); add_check_command(init_check_command); -- 1.9.3