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Btrfs-progs, btrfs-corrupt-block: fix the wrong usage 

The old usage is a copy of btrfs-map-logical, it's wrong, fix it.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
This commit is contained in:
Miao Xie 2012-02-23 15:52:05 +08:00 committed by Chris Mason
parent 24c2ac5eb1
commit 596979bee1
1 changed files with 8 additions and 6 deletions
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14
btrfs-corrupt-block.c
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@ -85,11 +85,13 @@ struct extent_buffer *debug_corrupt_block(struct btrfs_root *root, u64 bytenr,
static void print_usage(void) static void print_usage(void)
{ {
fprintf(stderr, "usage: btrfs-map-logical [options] mount_point\n"); fprintf(stderr, "usage: btrfs-corrupt-block [options] device\n");
fprintf(stderr, "\t-l Logical extent to map\n"); fprintf(stderr, "\t-l Logical extent to be corrupted\n");
fprintf(stderr, "\t-c Copy of the extent to read (usually 1 or 2)\n"); fprintf(stderr, "\t-c Copy of the extent to be corrupted"
fprintf(stderr, "\t-o Output file to hold the extent\n"); " (usually 1 or 2, default: 0)\n");
fprintf(stderr, "\t-b Number of bytes to read\n"); fprintf(stderr, "\t-b Number of bytes to be corrupted\n");
fprintf(stderr, "\t-e Extent to be corrupted\n");
fprintf(stderr, "\t-E The whole extent free to be corrupted\n");
exit(1); exit(1);
} }
@ -296,7 +298,7 @@ int main(int ac, char **av)
while(1) { while(1) {
int c; int c;
c = getopt_long(ac, av, "l:c:eEk", long_options, c = getopt_long(ac, av, "l:c:b:eEk", long_options,
&option_index); &option_index);
if (c < 0) if (c < 0)
break; break;