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Use getopt_long and introduce long mkfs options. -s now means --sectorsize

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Chris Mason 2008-04-01 11:08:13 -04:00 committed by David Woodhouse
parent 857e9a2a63
commit 6a87b4c00a
1 changed files with 21 additions and 3 deletions
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24
mkfs.c
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@ -17,12 +17,14 @@
*/ */
#define _XOPEN_SOURCE 500 #define _XOPEN_SOURCE 500
#define _GNU_SOURCE
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
#include <sys/types.h> #include <sys/types.h>
#include <sys/stat.h> #include <sys/stat.h>
#include <fcntl.h> #include <fcntl.h>
#include <unistd.h> #include <unistd.h>
#include <getopt.h>
#include <uuid/uuid.h> #include <uuid/uuid.h>
#include <linux/fs.h> #include <linux/fs.h>
#include <ctype.h> #include <ctype.h>
@ -139,10 +141,23 @@ err:
static void print_usage(void) static void print_usage(void)
{ {
fprintf(stderr, "usage: mkfs.btrfs [ -l leafsize ] [ -n nodesize] dev [ blocks ]\n"); fprintf(stderr, "usage: mkfs.btrfs [options] dev [ dev ... ]\n");
fprintf(stderr, "options:\n");
fprintf(stderr, "\t -b --byte-count total number of bytes in the FS\n");
fprintf(stderr, "\t -l --leafsize size of btree leaves\n");
fprintf(stderr, "\t -n --nodesize size of btree leaves\n");
fprintf(stderr, "\t -s --sectorsize min block allocation\n");
exit(1); exit(1);
} }
static struct option long_options[] = {
{ "byte-count", 1, NULL, 'b' },
{ "leafsize", 1, NULL, 'l' },
{ "nodesize", 1, NULL, 'n' },
{ "sectorsize", 1, NULL, 's' },
{ 0, 0, 0, 0}
};
int main(int ac, char **av) int main(int ac, char **av)
{ {
char *file; char *file;
@ -158,12 +173,14 @@ int main(int ac, char **av)
u32 stripesize = 4096; u32 stripesize = 4096;
u64 blocks[6]; u64 blocks[6];
int zero_end = 1; int zero_end = 1;
int option_index = 0;
struct btrfs_root *root; struct btrfs_root *root;
struct btrfs_trans_handle *trans; struct btrfs_trans_handle *trans;
while(1) { while(1) {
int c; int c;
c = getopt(ac, av, "b:l:n:s:"); c = getopt_long(ac, av, "b:l:n:s:", long_options,
&option_index);
if (c < 0) if (c < 0)
break; break;
switch(c) { switch(c) {
@ -174,7 +191,7 @@ int main(int ac, char **av)
nodesize = parse_size(optarg); nodesize = parse_size(optarg);
break; break;
case 's': case 's':
stripesize = parse_size(optarg); sectorsize = parse_size(optarg);
break; break;
case 'b': case 'b':
block_count = parse_size(optarg); block_count = parse_size(optarg);
@ -184,6 +201,7 @@ int main(int ac, char **av)
print_usage(); print_usage();
} }
} }
sectorsize = max(sectorsize, (u32)getpagesize());
if (leafsize < sectorsize || (leafsize & (sectorsize - 1))) { if (leafsize < sectorsize || (leafsize & (sectorsize - 1))) {
fprintf(stderr, "Illegal leafsize %u\n", leafsize); fprintf(stderr, "Illegal leafsize %u\n", leafsize);
exit(1); exit(1);