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btrfs-progs: restore: use long option for the path regex

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Current way of specifying the path to match is not very comfortable, but
the feature itself is very useful. Let's save the short option -m for a
more user friendly syntax and keep a long option --path-regex with the
current syntax.

CC: Peter Stuge <peter@stuge.se>
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
This commit is contained in:
David Sterba 2013-05-16 00:26:04 +02:00
parent 65b01dcc5a
commit f6e4a423eb
1 changed files with 15 additions and 2 deletions
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17
cmds-restore.c
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@ -32,6 +32,7 @@
#include <lzo/lzo1x.h> #include <lzo/lzo1x.h>
#include <zlib.h> #include <zlib.h>
#include <regex.h> #include <regex.h>
#include <getopt.h>
#include "ctree.h" #include "ctree.h"
#include "disk-io.h" #include "disk-io.h"
@ -967,6 +968,11 @@ out:
return ret; return ret;
} }
static struct option long_options[] = {
{ "path-regex", 1, NULL, 256},
{ 0, 0, 0, 0}
};
const char * const cmd_restore_usage[] = { const char * const cmd_restore_usage[] = {
"btrfs restore [options] <device>", "btrfs restore [options] <device>",
"Try to restore files from a damaged filesystem (unmounted)", "Try to restore files from a damaged filesystem (unmounted)",
@ -979,6 +985,10 @@ const char * const cmd_restore_usage[] = {
"-f <offset> filesystem location", "-f <offset> filesystem location",
"-u <block> super mirror", "-u <block> super mirror",
"-d find dir", "-d find dir",
"--path-regex <regex>",
" restore only filenames matching regex,",
" you have to use following syntax (possibly quoted):",
" ^/(|home(|/username(|/Desktop(|/.*))))$",
NULL NULL
}; };
@ -993,6 +1003,7 @@ int cmd_restore(int argc, char **argv)
int len; int len;
int ret; int ret;
int opt; int opt;
int option_index = 0;
int super_mirror = 0; int super_mirror = 0;
int find_dir = 0; int find_dir = 0;
int list_roots = 0; int list_roots = 0;
@ -1001,7 +1012,8 @@ int cmd_restore(int argc, char **argv)
regex_t match_reg, *mreg = NULL; regex_t match_reg, *mreg = NULL;
char reg_err[256]; char reg_err[256];
while ((opt = getopt(argc, argv, "sviot:u:df:r:lcm:")) != -1) { while ((opt = getopt_long(argc, argv, "sviot:u:df:r:lc", long_options,
&option_index)) != -1) {
switch (opt) { switch (opt) {
case 's': case 's':
@ -1059,7 +1071,8 @@ int cmd_restore(int argc, char **argv)
case 'c': case 'c':
match_cflags |= REG_ICASE; match_cflags |= REG_ICASE;
break; break;
case 'm': /* long option without single letter alternative */
case 256:
match_regstr = optarg; match_regstr = optarg;
break; break;
default: default: