blob: 65829f49484121ba87fe118d39c0961dd891719d [file] [log] [blame]
/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License v2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 021110-1307, USA.
*/
#define ARGV0_BUF_SIZE 64
struct cmd_struct {
const char *token;
int (*fn)(int, char **);
/*
* Usage strings
*
* A NULL-terminated array of the following format:
*
* usagestr[0] - one-line synopsis (required)
* usagestr[1] - one-line short description (required)
* usagestr[2..m] - a long (possibly multi-line) description
* (optional)
* usagestr[m + 1] - an empty line separator (required if at least one
* option string is given, not needed otherwise)
* usagestr[m + 2..n] - option strings, one option per line
* (optional)
* usagestr[n + 1] - NULL terminator
*
* Options (if present) should always (even if there is no long
* description) be prepended with an empty line. Supplied strings are
* indented but otherwise printed as-is, no automatic wrapping is done.
*
* Grep for cmd_*_usage[] for examples.
*/
const char * const *usagestr;
/* should be NULL if token is not a subgroup */
const struct cmd_group *next;
/* if true don't list this token in help listings */
int hidden;
};
struct cmd_group {
const char * const *usagestr;
const char *infostr;
const struct cmd_struct commands[];
};
/* btrfs.c */
int prefixcmp(const char *str, const char *prefix);
int check_argc_exact(int nargs, int expected);
int check_argc_min(int nargs, int expected);
int check_argc_max(int nargs, int expected);
int handle_command_group(const struct cmd_group *grp, int argc,
char **argv);
/* help.c */
extern const char * const generic_cmd_help_usage[];
void usage(const char * const *usagestr);
void usage_command(const struct cmd_struct *cmd, int full, int err);
void usage_command_group(const struct cmd_group *grp, int all, int err);
void help_unknown_token(const char *arg, const struct cmd_group *grp);
void help_ambiguous_token(const char *arg, const struct cmd_group *grp);
void help_command_group(const struct cmd_group *grp, int argc, char **argv);
extern const struct cmd_group subvolume_cmd_group;
extern const struct cmd_group filesystem_cmd_group;
extern const struct cmd_group balance_cmd_group;
extern const struct cmd_group device_cmd_group;
extern const struct cmd_group scrub_cmd_group;
extern const struct cmd_group inspect_cmd_group;
extern const struct cmd_group send_cmd_group;
extern const struct cmd_group receive_cmd_group;
extern const struct cmd_group quota_cmd_group;
extern const struct cmd_group qgroup_cmd_group;
extern const struct cmd_group replace_cmd_group;
extern const char * const cmd_send_usage[];
extern const char * const cmd_receive_usage[];
extern const char * const cmd_check_usage[];
extern const char * const cmd_chunk_recover_usage[];
extern const char * const cmd_restore_usage[];
int cmd_subvolume(int argc, char **argv);
int cmd_filesystem(int argc, char **argv);
int cmd_balance(int argc, char **argv);
int cmd_device(int argc, char **argv);
int cmd_scrub(int argc, char **argv);
int cmd_check(int argc, char **argv);
int cmd_chunk_recover(int argc, char **argv);
int cmd_inspect(int argc, char **argv);
int cmd_send(int argc, char **argv);
int cmd_receive(int argc, char **argv);
int cmd_quota(int argc, char **argv);
int cmd_qgroup(int argc, char **argv);
int cmd_replace(int argc, char **argv);
int cmd_restore(int argc, char **argv);
int cmd_select_super(int argc, char **argv);
int cmd_dump_super(int argc, char **argv);
int cmd_debug_tree(int argc, char **argv);
/* subvolume exported functions */
int test_issubvolume(char *path);
/* send.c */
int find_mount_root(const char *path, char **mount_root);
char *get_subvol_name(char *mnt, char *full_path);