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Add dmsetup 'help' command and update usage text.

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This commit is contained in:
Alasdair Kergon 2007-01-29 18:18:41 +00:00
parent 6fa801f3d8
commit cd79e58eda
2 changed files with 21 additions and 7 deletions
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1
WHATS_NEW_DM
View File

@ -1,5 +1,6 @@
Version 1.02.17 -
===================================
Add dmsetup 'help' command and update usage text.
Use fixed-size fields in report interface and reorder.
Version 1.02.16 - 25th January 2007

25
tools/dmsetup.c
View File

@ -1567,10 +1567,10 @@ static const struct dm_report_object_type _report_types[] = {
static const struct dm_report_field_type _report_fields[] = {
/* *INDENT-OFF* */
FIELD_F(TASK, STR, "Name", 16, dm_name, "name", "Name of mapped device.")
FIELD_F(TASK, STR, "UUID", 32, dm_uuid, "uuid", "Unique identifier for mapped device (optional).")
FIELD_F(INFO, STR, "Stat", 4, dm_info_status, "status", "Attributes.")
FIELD_O(INFO, dm_info, NUM, "Maj", major, 3, int32, "major", "Major number.")
FIELD_O(INFO, dm_info, NUM, "Min", minor, 3, int32, "minor", "Minor number.")
FIELD_F(TASK, STR, "UUID", 32, dm_uuid, "uuid", "Unique (optional) identifier for mapped device.")
FIELD_F(INFO, STR, "Stat", 4, dm_info_status, "status", "(L)ive, (I)nactive, (s)uspended, (r)ead-only, read-(w)rite.")
FIELD_O(INFO, dm_info, NUM, "Maj", major, 3, int32, "major", "Block device major number.")
FIELD_O(INFO, dm_info, NUM, "Min", minor, 3, int32, "minor", "Block device minor number.")
FIELD_O(INFO, dm_info, NUM, "Open", open_count, 4, int32, "open_count", "Number of references to open device, if requested.")
FIELD_O(INFO, dm_info, NUM, "Targ", target_count, 4, int32, "target_count", "Number of segments in live table, if present.")
FIELD_O(INFO, dm_info, NUM, "Event", event_nr, 6, uint32, "event_nr", "Current event number.")
@ -1673,10 +1673,13 @@ static int _ls(int argc, char **argv, void *data)
return _process_all(argc, argv, 0, _display_name);
}
static int _help(int argc, char **argv, void *data);
/*
* Dispatch table
*/
static struct command _commands[] = {
{"help", "\n", 0, 0, _help},
{"create", "<dev_name> [-j|--major <major> -m|--minor <minor>]\n"
"\t [-U|--uid <uid>] [-G|--gid <gid>] [-M|--mode <octal_mode>]\n"
"\t [-u|uuid <uuid>]\n"
@ -1710,14 +1713,17 @@ static void _usage(FILE *out)
fprintf(out, "Usage:\n\n");
fprintf(out, "dmsetup [--version] [-v|--verbose [-v|--verbose ...]]\n"
" [-r|--readonly] [--noopencount] [--nolockfs]\n\n");
" [-r|--readonly] [--noopencount] [--nolockfs]\n"
" [-c|--columns] [-o <fields>] [--noheadings] [--separator <separator>]\n\n");
for (i = 0; _commands[i].name; i++)
fprintf(out, "\t%s %s\n", _commands[i].name, _commands[i].help);
fprintf(out, "\n<device> may be device name or -u <uuid> or "
"-j <major> -m <minor>\n");
fprintf(out, "<fields> are comma-separated. Use -c -o help for list.\n");
fprintf(out, "Table_file contents may be supplied on stdin.\n");
fprintf(out, "Tree options are: ascii, utf, vt100; compact, inverted, notrunc;\n"
" [no]device, active, open, rw and uuid.\n\n");
" [no]device, active, open, rw and uuid.\n");
fprintf(out, "\n");
return;
}
@ -1728,6 +1734,13 @@ static void _losetup_usage(FILE *out)
"[-o offset] [-f|loop_device] [file]\n\n");
}
static int _help(int argc, char **argv, void *data)
{
_usage(stderr);
return 1;
}
static struct command *_find_command(const char *name)
{
int i;