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add help -c for field list

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This commit is contained in:
Alasdair Kergon 2007-01-29 18:37:57 +00:00
parent e3f6460b0d
commit 64d7041264
1 changed files with 12 additions and 3 deletions
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15
tools/dmsetup.c
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@ -1625,7 +1625,7 @@ static int _report_init(struct command *c)
if (_switches[SORT_ARG] && _string_args[SORT_ARG]) {
keys = _string_args[SORT_ARG];
buffered = 1;
if (!strcmp(c->name, "status") || !strcmp(c->name, "table")) {
if (c && (!strcmp(c->name, "status") || !strcmp(c->name, "table"))) {
err("--sort is not yet supported with status and table");
goto out;
}
@ -1714,12 +1714,13 @@ static void _usage(FILE *out)
fprintf(out, "Usage:\n\n");
fprintf(out, "dmsetup [--version] [-v|--verbose [-v|--verbose ...]]\n"
" [-r|--readonly] [--noopencount] [--nolockfs]\n"
" [-c|--columns] [-o <fields>] [--noheadings] [--separator <separator>]\n\n");
" [-c|--columns] [-o <fields>] [-O|--sort <sort_fields>]\n"
" [--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, "<fields> are comma-separated. Use 'help -c' 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");
@ -1738,6 +1739,14 @@ static int _help(int argc, char **argv, void *data)
{
_usage(stderr);
if (_switches[COLS_ARG]) {
_switches[OPTIONS_ARG] = 1;
_string_args[OPTIONS_ARG] = (char *) "help";
_switches[SORT_ARG] = 0;
(void) _report_init(NULL);
}
return 1;
}