mirror of
https://github.com/kdave/btrfs-progs
synced 2024-12-18 04:15:32 +00:00
39c63831a0
Some commands could be run in a dry-run mode, i.e. not doing any write/change actions, only printing the steps and ignoring errors. There are two possibilities where to put the option: - as a global one: btrfs --dry-run subvolume delete /path - local option: btrfs subvolume delete --dry-run /path As we have several global options already, let's put it there, dry-run should not be very common so the slight inconvenience of writing the option out of order of command arguments should be acceptable. Issue: #629 Signed-off-by: David Sterba <dsterba@suse.com>
132 lines
4.6 KiB
C
132 lines
4.6 KiB
C
/*
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef __BTRFS_HELP_H__
|
|
#define __BTRFS_HELP_H__
|
|
|
|
#include <limits.h>
|
|
#include <stdbool.h>
|
|
|
|
struct cmd_struct;
|
|
struct cmd_group;
|
|
|
|
/* User defined long options first option */
|
|
#define GETOPT_VAL_FIRST 256
|
|
|
|
#define GETOPT_VAL_SI 512
|
|
#define GETOPT_VAL_IEC 513
|
|
#define GETOPT_VAL_RAW 514
|
|
#define GETOPT_VAL_HUMAN_READABLE 515
|
|
#define GETOPT_VAL_KBYTES 516
|
|
#define GETOPT_VAL_MBYTES 517
|
|
#define GETOPT_VAL_GBYTES 518
|
|
#define GETOPT_VAL_TBYTES 519
|
|
|
|
#define GETOPT_VAL_HELP 520
|
|
#define GETOPT_VAL_PARAM 521
|
|
#define GETOPT_VAL_DRY_RUN 522
|
|
|
|
#define ARGV0_BUF_SIZE PATH_MAX
|
|
|
|
#define HELPINFO_UNITS_LONG \
|
|
OPTLINE("--raw", "raw numbers in bytes"), \
|
|
OPTLINE("--human-readable", "human friendly numbers, base 1024 (default)"), \
|
|
OPTLINE("--iec", "use 1024 as a base (KiB, MiB, GiB, TiB)"), \
|
|
OPTLINE("--si", "use 1000 as a base (kB, MB, GB, TB)"), \
|
|
OPTLINE("--kbytes", "show sizes in KiB, or kB with --si"), \
|
|
OPTLINE("--mbytes", "show sizes in MiB, or MB with --si"), \
|
|
OPTLINE("--gbytes", "show sizes in GiB, or GB with --si"), \
|
|
OPTLINE("--tbytes", "show sizes in TiB, or TB with --si")
|
|
|
|
#define HELPINFO_UNITS_SHORT_LONG \
|
|
OPTLINE("-b|--raw", "raw numbers in bytes"), \
|
|
OPTLINE("-h|--human-readable", "human friendly numbers, base 1024 (default)"), \
|
|
OPTLINE("-H", "human friendly numbers, base 1000"), \
|
|
OPTLINE("--iec", "use 1024 as a base (KiB, MiB, GiB, TiB)"), \
|
|
OPTLINE("--si", "use 1000 as a base (kB, MB, GB, TB)"), \
|
|
OPTLINE("-k|--kbytes", "show sizes in KiB, or kB with --si"), \
|
|
OPTLINE("-m|--mbytes", "show sizes in MiB, or MB with --si"), \
|
|
OPTLINE("-g|--gbytes", "show sizes in GiB, or GB with --si"), \
|
|
OPTLINE("-t|--tbytes", "show sizes in TiB, or TB with --si")
|
|
|
|
#define HELPINFO_OPTION "\x01"
|
|
#define HELPINFO_DESC "\x02"
|
|
/* Keep the line length below 100 chars. */
|
|
#define HELPINFO_PREFIX_WIDTH 4
|
|
#define HELPINFO_LISTING_WIDTH 8
|
|
#define HELPINFO_OPTION_WIDTH 24
|
|
#define HELPINFO_OPTION_MARGIN 2
|
|
#define HELPINFO_DESC_PREFIX (HELPINFO_PREFIX_WIDTH + \
|
|
HELPINFO_OPTION_WIDTH + \
|
|
HELPINFO_OPTION_MARGIN)
|
|
#define HELPINFO_DESC_WIDTH 99 - HELPINFO_DESC_PREFIX
|
|
#define OPTLINE(opt, text) HELPINFO_OPTION opt HELPINFO_DESC text
|
|
|
|
/*
|
|
* Special marker in the help strings that will preemptively insert the global
|
|
* options and then continue with the following text that possibly follows
|
|
* after the regular options
|
|
*/
|
|
#define HELPINFO_INSERT_GLOBALS "", \
|
|
"Global options:"
|
|
|
|
#define HELPINFO_INSERT_FORMAT "--format TYPE"
|
|
#define HELPINFO_INSERT_DRY_RUN OPTLINE("--dry-run", "do not do any active/changing actions")
|
|
#define HELPINFO_INSERT_VERBOSE OPTLINE("-v|--verbose", "increase output verbosity")
|
|
#define HELPINFO_INSERT_QUIET OPTLINE("-q|--quiet", "print only errors")
|
|
|
|
/*
|
|
* Descriptor of output format
|
|
*/
|
|
struct format_desc {
|
|
unsigned int value;
|
|
char name[8];
|
|
};
|
|
|
|
extern const struct format_desc output_formats[2];
|
|
|
|
const char *output_format_name(unsigned int value);
|
|
|
|
__attribute__((noreturn))
|
|
void usage_unknown_option(const struct cmd_struct *cmd, char **argv);
|
|
|
|
__attribute__((noreturn))
|
|
void usage(const struct cmd_struct *cmd, int error);
|
|
void usage_command(const struct cmd_struct *cmd, bool full, bool err);
|
|
void usage_command_group(const struct cmd_group *grp, bool all, bool err);
|
|
void usage_command_group_short(const struct cmd_group *grp);
|
|
|
|
__attribute__((noreturn))
|
|
void help_unknown_token(const char *arg, const struct cmd_group *grp);
|
|
__attribute__((noreturn))
|
|
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);
|
|
|
|
int check_argc_exact(int nargs, int expected);
|
|
int check_argc_min(int nargs, int expected);
|
|
int check_argc_max(int nargs, int expected);
|
|
void clean_args_no_options(const struct cmd_struct *cmd,
|
|
int argc, char *argv[]);
|
|
void clean_args_no_options_relaxed(const struct cmd_struct *cmd,
|
|
int argc, char *argv[]);
|
|
|
|
void fixup_argv0(char **argv, const char *token);
|
|
void set_argv0(char **argv);
|
|
const char *get_argv0_buf(void);
|
|
|
|
#endif
|