mirror of
git://sourceware.org/git/lvm2.git
synced 2024-12-23 21:35:29 +03:00
75394455bc
LVM has huge set of options now - it's approaching 60 short-arg less options and we get interesting case of misdetection for 'merge' option which has been put into the middle of options with 'short_arg' - thus certainly past 65. (ASCII 'A'). To avoid confusion of short_arg with long_opt number - add '128' to all such non-short-arg options.
1454 lines
31 KiB
C
1454 lines
31 KiB
C
/*
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* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
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* Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved.
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*
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* This file is part of LVM2.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU Lesser General Public License v.2.1.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "tools.h"
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#include "lvm2cmdline.h"
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#include "label.h"
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#include "lvm-version.h"
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#include "stub.h"
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#include "lvm2cmd.h"
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#include "last-path-component.h"
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#include <signal.h>
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#include <syslog.h>
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#include <libgen.h>
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#include <sys/stat.h>
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#include <time.h>
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#include <sys/resource.h>
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#ifdef HAVE_GETOPTLONG
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# include <getopt.h>
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# define GETOPTLONG_FN(a, b, c, d, e) getopt_long((a), (b), (c), (d), (e))
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# define OPTIND_INIT 0
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#else
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struct option {
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};
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extern int optind;
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extern char *optarg;
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# define GETOPTLONG_FN(a, b, c, d, e) getopt((a), (b), (c))
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# define OPTIND_INIT 1
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#endif
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/*
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* Table of valid switches
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*/
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static struct arg_props _arg_props[ARG_COUNT + 1] = {
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#define arg(a, b, c, d, e) {b, "", "--" c, d, e},
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#include "args.h"
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#undef arg
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};
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static struct cmdline_context _cmdline;
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/* Command line args */
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unsigned arg_count(const struct cmd_context *cmd, int a)
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{
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return cmd->arg_values[a].count;
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}
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unsigned grouped_arg_count(const struct arg_values *av, int a)
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{
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return av[a].count;
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}
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unsigned arg_is_set(const struct cmd_context *cmd, int a)
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{
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return arg_count(cmd, a) ? 1 : 0;
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}
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unsigned grouped_arg_is_set(const struct arg_values *av, int a)
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{
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return grouped_arg_count(av, a) ? 1 : 0;
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}
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const char *arg_value(struct cmd_context *cmd, int a)
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{
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return cmd->arg_values[a].value;
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}
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const char *arg_str_value(struct cmd_context *cmd, int a, const char *def)
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{
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return arg_count(cmd, a) ? cmd->arg_values[a].value : def;
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}
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const char *grouped_arg_str_value(const struct arg_values *av, int a, const char *def)
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{
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return grouped_arg_count(av, a) ? av[a].value : def;
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}
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int32_t arg_int_value(struct cmd_context *cmd, int a, const int32_t def)
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{
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return arg_count(cmd, a) ? cmd->arg_values[a].i_value : def;
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}
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uint32_t arg_uint_value(struct cmd_context *cmd, int a, const uint32_t def)
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{
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return arg_count(cmd, a) ? cmd->arg_values[a].ui_value : def;
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}
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int64_t arg_int64_value(struct cmd_context *cmd, int a, const int64_t def)
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{
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return arg_count(cmd, a) ? cmd->arg_values[a].i64_value : def;
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}
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uint64_t arg_uint64_value(struct cmd_context *cmd, int a, const uint64_t def)
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{
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return arg_count(cmd, a) ? cmd->arg_values[a].ui64_value : def;
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}
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/* No longer used.
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const void *arg_ptr_value(struct cmd_context *cmd, int a, const void *def)
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{
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return arg_count(cmd, a) ? cmd->arg_values[a].ptr : def;
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}
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*/
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sign_t arg_sign_value(struct cmd_context *cmd, int a, const sign_t def)
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{
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return arg_count(cmd, a) ? cmd->arg_values[a].sign : def;
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}
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percent_type_t arg_percent_value(struct cmd_context *cmd, int a, const percent_type_t def)
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{
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return arg_count(cmd, a) ? cmd->arg_values[a].percent : def;
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}
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int arg_count_increment(struct cmd_context *cmd, int a)
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{
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return cmd->arg_values[a].count++;
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}
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int yes_no_arg(struct cmd_context *cmd __attribute__((unused)), struct arg_values *av)
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{
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av->sign = SIGN_NONE;
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av->percent = PERCENT_NONE;
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if (!strcmp(av->value, "y")) {
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av->i_value = 1;
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av->ui_value = 1;
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}
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else if (!strcmp(av->value, "n")) {
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av->i_value = 0;
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av->ui_value = 0;
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}
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else
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return 0;
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return 1;
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}
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int yes_no_excl_arg(struct cmd_context *cmd __attribute__((unused)), struct arg_values *av)
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{
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av->sign = SIGN_NONE;
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av->percent = PERCENT_NONE;
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if (!strcmp(av->value, "e") || !strcmp(av->value, "ey") ||
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!strcmp(av->value, "ye")) {
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av->i_value = CHANGE_AE;
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av->ui_value = CHANGE_AE;
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}
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else if (!strcmp(av->value, "y")) {
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av->i_value = CHANGE_AY;
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av->ui_value = CHANGE_AY;
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}
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else if (!strcmp(av->value, "n") || !strcmp(av->value, "en") ||
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!strcmp(av->value, "ne")) {
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av->i_value = CHANGE_AN;
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av->ui_value = CHANGE_AN;
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}
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else if (!strcmp(av->value, "ln") || !strcmp(av->value, "nl")) {
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av->i_value = CHANGE_ALN;
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av->ui_value = CHANGE_ALN;
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}
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else if (!strcmp(av->value, "ly") || !strcmp(av->value, "yl")) {
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av->i_value = CHANGE_ALY;
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av->ui_value = CHANGE_ALY;
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}
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else
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return 0;
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return 1;
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}
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int metadatatype_arg(struct cmd_context *cmd, struct arg_values *av)
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{
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return get_format_by_name(cmd, av->value) ? 1 : 0;
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}
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static int _get_int_arg(struct arg_values *av, char **ptr)
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{
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char *val;
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long v;
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av->percent = PERCENT_NONE;
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val = av->value;
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switch (*val) {
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case '+':
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av->sign = SIGN_PLUS;
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val++;
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break;
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case '-':
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av->sign = SIGN_MINUS;
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val++;
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break;
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default:
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av->sign = SIGN_NONE;
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}
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if (!isdigit(*val))
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return 0;
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v = strtol(val, ptr, 10);
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if (*ptr == val)
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return 0;
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av->i_value = (int32_t) v;
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av->ui_value = (uint32_t) v;
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av->i64_value = (int64_t) v;
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av->ui64_value = (uint64_t) v;
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return 1;
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}
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/* Size stored in sectors */
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static int _size_arg(struct cmd_context *cmd __attribute__((unused)), struct arg_values *av, int factor)
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{
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char *ptr;
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int i;
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static const char *suffixes = "kmgtpebs";
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char *val;
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double v;
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uint64_t v_tmp, adjustment;
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av->percent = PERCENT_NONE;
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val = av->value;
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switch (*val) {
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case '+':
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av->sign = SIGN_PLUS;
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val++;
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break;
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case '-':
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av->sign = SIGN_MINUS;
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val++;
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break;
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default:
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av->sign = SIGN_NONE;
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}
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if (!isdigit(*val))
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return 0;
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v = strtod(val, &ptr);
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if (ptr == val)
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return 0;
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if (*ptr) {
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for (i = strlen(suffixes) - 1; i >= 0; i--)
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if (suffixes[i] == tolower((int) *ptr))
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break;
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if (i < 0) {
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return 0;
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} else if (i == 7) {
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/* v is already in sectors */
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;
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} else if (i == 6) {
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/* bytes */
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v_tmp = (uint64_t) v;
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adjustment = v_tmp % 512;
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if (adjustment) {
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v_tmp += (512 - adjustment);
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log_error("Size is not a multiple of 512. "
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"Try using %"PRIu64" or %"PRIu64".",
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v_tmp - 512, v_tmp);
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return 0;
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}
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v /= 512;
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} else {
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/* all other units: kmgtpe */
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while (i-- > 0)
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v *= 1024;
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v *= 2;
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}
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} else
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v *= factor;
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av->i_value = (int32_t) v;
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av->ui_value = (uint32_t) v;
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av->i64_value = (int64_t) v;
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av->ui64_value = (uint64_t) v;
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return 1;
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}
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int size_kb_arg(struct cmd_context *cmd, struct arg_values *av)
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{
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return _size_arg(cmd, av, 2);
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}
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int size_mb_arg(struct cmd_context *cmd, struct arg_values *av)
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{
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return _size_arg(cmd, av, 2048);
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}
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int int_arg(struct cmd_context *cmd __attribute__((unused)), struct arg_values *av)
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{
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char *ptr;
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if (!_get_int_arg(av, &ptr) || (*ptr) || (av->sign == SIGN_MINUS))
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return 0;
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return 1;
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}
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int int_arg_with_sign(struct cmd_context *cmd __attribute__((unused)), struct arg_values *av)
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{
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char *ptr;
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if (!_get_int_arg(av, &ptr) || (*ptr))
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return 0;
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return 1;
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}
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int int_arg_with_sign_and_percent(struct cmd_context *cmd __attribute__((unused)),
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struct arg_values *av)
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{
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char *ptr;
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if (!_get_int_arg(av, &ptr))
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return 0;
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if (!*ptr)
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return 1;
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if (*ptr++ != '%')
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return 0;
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if (!strcasecmp(ptr, "V") || !strcasecmp(ptr, "VG"))
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av->percent = PERCENT_VG;
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else if (!strcasecmp(ptr, "L") || !strcasecmp(ptr, "LV"))
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av->percent = PERCENT_LV;
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else if (!strcasecmp(ptr, "P") || !strcasecmp(ptr, "PV") ||
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!strcasecmp(ptr, "PVS"))
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av->percent = PERCENT_PVS;
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else if (!strcasecmp(ptr, "F") || !strcasecmp(ptr, "FR") ||
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!strcasecmp(ptr, "FREE"))
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av->percent = PERCENT_FREE;
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else if (!strcasecmp(ptr, "O") || !strcasecmp(ptr, "OR") ||
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!strcasecmp(ptr, "ORIGIN"))
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av->percent = PERCENT_ORIGIN;
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else
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return 0;
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return 1;
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}
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int minor_arg(struct cmd_context *cmd __attribute__((unused)), struct arg_values *av)
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{
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char *ptr;
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if (!_get_int_arg(av, &ptr) || (*ptr) || (av->sign == SIGN_MINUS))
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return 0;
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if (av->i_value > 255) {
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log_error("Minor number outside range 0-255");
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return 0;
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}
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return 1;
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}
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int major_arg(struct cmd_context *cmd __attribute__((unused)), struct arg_values *av)
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{
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char *ptr;
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if (!_get_int_arg(av, &ptr) || (*ptr) || (av->sign == SIGN_MINUS))
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return 0;
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if (av->i_value > 255) {
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log_error("Major number outside range 0-255");
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return 0;
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}
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/* FIXME Also Check against /proc/devices */
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return 1;
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}
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int string_arg(struct cmd_context *cmd __attribute__((unused)),
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struct arg_values *av __attribute__((unused)))
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{
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return 1;
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}
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int tag_arg(struct cmd_context *cmd __attribute__((unused)), struct arg_values *av)
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{
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char *pos = av->value;
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if (*pos == '@')
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pos++;
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if (!validate_tag(pos))
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return 0;
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av->value = pos;
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return 1;
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}
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int permission_arg(struct cmd_context *cmd __attribute__((unused)), struct arg_values *av)
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{
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av->sign = SIGN_NONE;
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if ((!strcmp(av->value, "rw")) || (!strcmp(av->value, "wr")))
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av->ui_value = LVM_READ | LVM_WRITE;
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else if (!strcmp(av->value, "r"))
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av->ui_value = LVM_READ;
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else
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return 0;
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return 1;
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}
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int alloc_arg(struct cmd_context *cmd __attribute__((unused)), struct arg_values *av)
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{
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alloc_policy_t alloc;
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av->sign = SIGN_NONE;
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alloc = get_alloc_from_string(av->value);
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if (alloc == ALLOC_INVALID)
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return 0;
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av->ui_value = (uint32_t) alloc;
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return 1;
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}
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int segtype_arg(struct cmd_context *cmd, struct arg_values *av)
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{
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return get_segtype_from_string(cmd, av->value) ? 1 : 0;
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}
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/*
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* Positive integer, zero or "auto".
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*/
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int readahead_arg(struct cmd_context *cmd __attribute__((unused)), struct arg_values *av)
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{
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if (!strcasecmp(av->value, "auto")) {
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av->ui_value = DM_READ_AHEAD_AUTO;
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return 1;
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}
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if (!strcasecmp(av->value, "none")) {
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av->ui_value = DM_READ_AHEAD_NONE;
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return 1;
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}
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if (!_size_arg(cmd, av, 1))
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return 0;
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if (av->sign == SIGN_MINUS)
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return 0;
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return 1;
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}
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/*
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* Non-zero, positive integer, "all", or "unmanaged"
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*/
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int metadatacopies_arg(struct cmd_context *cmd, struct arg_values *av)
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{
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if (!strncmp(cmd->command->name, "vg", 2)) {
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if (!strcasecmp(av->value, "all")) {
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av->ui_value = VGMETADATACOPIES_ALL;
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return 1;
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}
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if (!strcasecmp(av->value, "unmanaged")) {
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av->ui_value = VGMETADATACOPIES_UNMANAGED;
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return 1;
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}
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}
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return int_arg(cmd, av);
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}
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static void __alloc(int size)
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{
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if (!(_cmdline.commands = dm_realloc(_cmdline.commands, sizeof(*_cmdline.commands) * size))) {
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log_fatal("Couldn't allocate memory.");
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exit(ECMD_FAILED);
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}
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_cmdline.commands_size = size;
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}
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static void _alloc_command(void)
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{
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if (!_cmdline.commands_size)
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__alloc(32);
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if (_cmdline.commands_size <= _cmdline.num_commands)
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__alloc(2 * _cmdline.commands_size);
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}
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static void _create_new_command(const char *name, command_fn command,
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unsigned flags,
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const char *desc, const char *usagestr,
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int nargs, int *args)
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{
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struct command *nc;
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_alloc_command();
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nc = _cmdline.commands + _cmdline.num_commands++;
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nc->name = name;
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nc->desc = desc;
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nc->usage = usagestr;
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nc->fn = command;
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nc->flags = flags;
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nc->num_args = nargs;
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nc->valid_args = args;
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}
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static void _register_command(const char *name, command_fn fn, const char *desc,
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unsigned flags, const char *usagestr, ...)
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{
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int nargs = 0, i;
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int *args;
|
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va_list ap;
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|
|
/* count how many arguments we have */
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va_start(ap, usagestr);
|
|
while (va_arg(ap, int) >= 0)
|
|
nargs++;
|
|
va_end(ap);
|
|
|
|
/* allocate space for them */
|
|
if (!(args = dm_malloc(sizeof(*args) * nargs))) {
|
|
log_fatal("Out of memory.");
|
|
exit(ECMD_FAILED);
|
|
}
|
|
|
|
/* fill them in */
|
|
va_start(ap, usagestr);
|
|
for (i = 0; i < nargs; i++)
|
|
args[i] = va_arg(ap, int);
|
|
va_end(ap);
|
|
|
|
/* enter the command in the register */
|
|
_create_new_command(name, fn, flags, desc, usagestr, nargs, args);
|
|
}
|
|
|
|
void lvm_register_commands(void)
|
|
{
|
|
#define xx(a, b, c, d...) _register_command(# a, a, b, c, ## d, \
|
|
driverloaded_ARG, \
|
|
debug_ARG, help_ARG, help2_ARG, \
|
|
version_ARG, verbose_ARG, \
|
|
quiet_ARG, config_ARG, -1);
|
|
#include "commands.h"
|
|
#undef xx
|
|
}
|
|
|
|
static struct command *_find_command(const char *name)
|
|
{
|
|
int i;
|
|
const char *base;
|
|
|
|
base = last_path_component(name);
|
|
|
|
for (i = 0; i < _cmdline.num_commands; i++) {
|
|
if (!strcmp(base, _cmdline.commands[i].name))
|
|
break;
|
|
}
|
|
|
|
if (i >= _cmdline.num_commands)
|
|
return 0;
|
|
|
|
return _cmdline.commands + i;
|
|
}
|
|
|
|
static void _short_usage(const char *name)
|
|
{
|
|
log_error("Run `%s --help' for more information.", name);
|
|
}
|
|
|
|
static int _usage(const char *name)
|
|
{
|
|
struct command *com = _find_command(name);
|
|
|
|
if (!com) {
|
|
log_print("%s: no such command.", name);
|
|
return 0;
|
|
}
|
|
|
|
log_print("%s: %s\n\n%s", com->name, com->desc, com->usage);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Sets up the short and long argument. If there
|
|
* is no short argument then the index of the
|
|
* argument in the the_args array is set as the
|
|
* long opt value. Yuck. Of course this means we
|
|
* can't have more than 'a' long arguments.
|
|
*/
|
|
static void _add_getopt_arg(int arg, char **ptr, struct option **o)
|
|
{
|
|
struct arg_props *a = _cmdline.arg_props + arg;
|
|
|
|
if (a->short_arg) {
|
|
*(*ptr)++ = a->short_arg;
|
|
|
|
if (a->fn)
|
|
*(*ptr)++ = ':';
|
|
}
|
|
#ifdef HAVE_GETOPTLONG
|
|
if (*(a->long_arg + 2)) {
|
|
(*o)->name = a->long_arg + 2;
|
|
(*o)->has_arg = a->fn ? 1 : 0;
|
|
(*o)->flag = NULL;
|
|
if (a->short_arg)
|
|
(*o)->val = a->short_arg;
|
|
else
|
|
(*o)->val = arg + 128;
|
|
(*o)++;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
static int _find_arg(struct command *com, int opt)
|
|
{
|
|
struct arg_props *a;
|
|
int i, arg;
|
|
|
|
for (i = 0; i < com->num_args; i++) {
|
|
arg = com->valid_args[i];
|
|
a = _cmdline.arg_props + arg;
|
|
|
|
/*
|
|
* opt should equal either the
|
|
* short arg, or the index into
|
|
* the_args.
|
|
*/
|
|
if ((a->short_arg && (opt == a->short_arg)) ||
|
|
(!a->short_arg && (opt == (arg + 128))))
|
|
return arg;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
static int _process_command_line(struct cmd_context *cmd, int *argc,
|
|
char ***argv)
|
|
{
|
|
int i, opt, arg;
|
|
char str[((ARG_COUNT + 1) * 2) + 1], *ptr = str;
|
|
struct option opts[ARG_COUNT + 1], *o = opts;
|
|
struct arg_props *a;
|
|
struct arg_values *av;
|
|
struct arg_value_group_list *current_group = NULL;
|
|
|
|
if (!(cmd->arg_values = dm_pool_zalloc(cmd->mem, sizeof(*cmd->arg_values) * ARG_COUNT))) {
|
|
log_fatal("Unable to allocate memory for command line arguments.");
|
|
return 0;
|
|
}
|
|
|
|
/* fill in the short and long opts */
|
|
for (i = 0; i < cmd->command->num_args; i++)
|
|
_add_getopt_arg(cmd->command->valid_args[i], &ptr, &o);
|
|
|
|
*ptr = '\0';
|
|
memset(o, 0, sizeof(*o));
|
|
|
|
/* initialise getopt_long & scan for command line switches */
|
|
optarg = 0;
|
|
optind = OPTIND_INIT;
|
|
while ((opt = GETOPTLONG_FN(*argc, *argv, str, opts, NULL)) >= 0) {
|
|
|
|
if (opt == '?')
|
|
return 0;
|
|
|
|
if ((arg = _find_arg(cmd->command, opt)) < 0) {
|
|
log_fatal("Unrecognised option.");
|
|
return 0;
|
|
}
|
|
|
|
a = _cmdline.arg_props + arg;
|
|
|
|
av = &cmd->arg_values[arg];
|
|
|
|
if (a->flags & ARG_GROUPABLE) {
|
|
/* Start a new group of arguments the first time or if a non-countable argument is repeated. */
|
|
if (!current_group || (current_group->arg_values[arg].count && !(a->flags & ARG_COUNTABLE))) {
|
|
/* FIXME Reduce size including only groupable args */
|
|
if (!(current_group = dm_pool_zalloc(cmd->mem, sizeof(struct arg_value_group_list) + sizeof(*cmd->arg_values) * ARG_COUNT))) {
|
|
log_fatal("Unable to allocate memory for command line arguments.");
|
|
return 0;
|
|
}
|
|
|
|
dm_list_add(&cmd->arg_value_groups, ¤t_group->list);
|
|
}
|
|
/* Maintain total argument count as well as count within each group */
|
|
av->count++;
|
|
av = ¤t_group->arg_values[arg];
|
|
}
|
|
|
|
if (av->count && !(a->flags & ARG_COUNTABLE)) {
|
|
log_error("Option%s%c%s%s may not be repeated.",
|
|
a->short_arg ? " -" : "",
|
|
a->short_arg ? : ' ',
|
|
(a->short_arg && a->long_arg) ?
|
|
"/" : "", a->long_arg ? : "");
|
|
return 0;
|
|
}
|
|
|
|
if (a->fn) {
|
|
if (!optarg) {
|
|
log_error("Option requires argument.");
|
|
return 0;
|
|
}
|
|
|
|
av->value = optarg;
|
|
|
|
if (!a->fn(cmd, av)) {
|
|
log_error("Invalid argument for %s: %s", a->long_arg, optarg);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
av->count++;
|
|
}
|
|
|
|
*argc -= optind;
|
|
*argv += optind;
|
|
return 1;
|
|
}
|
|
|
|
static int _merge_synonym(struct cmd_context *cmd, int oldarg, int newarg)
|
|
{
|
|
const struct arg_values *old;
|
|
struct arg_values *new;
|
|
|
|
if (arg_count(cmd, oldarg) && arg_count(cmd, newarg)) {
|
|
log_error("%s and %s are synonyms. Please only supply one.",
|
|
_cmdline.arg_props[oldarg].long_arg, _cmdline.arg_props[newarg].long_arg);
|
|
return 0;
|
|
}
|
|
|
|
if (!arg_count(cmd, oldarg))
|
|
return 1;
|
|
|
|
old = cmd->arg_values + oldarg;
|
|
new = cmd->arg_values + newarg;
|
|
|
|
new->count = old->count;
|
|
new->value = old->value;
|
|
new->i_value = old->i_value;
|
|
new->ui_value = old->ui_value;
|
|
new->i64_value = old->i64_value;
|
|
new->ui64_value = old->ui64_value;
|
|
new->sign = old->sign;
|
|
|
|
return 1;
|
|
}
|
|
|
|
int version(struct cmd_context *cmd __attribute__((unused)),
|
|
int argc __attribute__((unused)),
|
|
char **argv __attribute__((unused)))
|
|
{
|
|
char vsn[80];
|
|
|
|
log_print("LVM version: %s", LVM_VERSION);
|
|
if (library_version(vsn, sizeof(vsn)))
|
|
log_print("Library version: %s", vsn);
|
|
if (driver_version(vsn, sizeof(vsn)))
|
|
log_print("Driver version: %s", vsn);
|
|
|
|
return ECMD_PROCESSED;
|
|
}
|
|
|
|
static int _get_settings(struct cmd_context *cmd)
|
|
{
|
|
cmd->current_settings = cmd->default_settings;
|
|
|
|
if (arg_count(cmd, debug_ARG))
|
|
cmd->current_settings.debug = _LOG_FATAL +
|
|
(arg_count(cmd, debug_ARG) - 1);
|
|
|
|
if (arg_count(cmd, verbose_ARG))
|
|
cmd->current_settings.verbose = arg_count(cmd, verbose_ARG);
|
|
|
|
if (arg_count(cmd, quiet_ARG)) {
|
|
cmd->current_settings.debug = 0;
|
|
cmd->current_settings.verbose = 0;
|
|
}
|
|
|
|
if (arg_count(cmd, test_ARG))
|
|
cmd->current_settings.test = arg_count(cmd, test_ARG);
|
|
|
|
if (arg_count(cmd, driverloaded_ARG)) {
|
|
cmd->current_settings.activation =
|
|
arg_int_value(cmd, driverloaded_ARG,
|
|
cmd->default_settings.activation);
|
|
}
|
|
|
|
cmd->current_settings.archive = arg_int_value(cmd, autobackup_ARG, cmd->current_settings.archive);
|
|
cmd->current_settings.backup = arg_int_value(cmd, autobackup_ARG, cmd->current_settings.backup);
|
|
cmd->current_settings.cache_vgmetadata = cmd->command->flags & CACHE_VGMETADATA ? 1 : 0;
|
|
cmd->partial_activation = 0;
|
|
|
|
if (arg_count(cmd, partial_ARG)) {
|
|
cmd->partial_activation = 1;
|
|
log_print("Partial mode. Incomplete logical volumes will be processed.");
|
|
}
|
|
|
|
if (arg_count(cmd, ignorelockingfailure_ARG) || arg_count(cmd, sysinit_ARG))
|
|
init_ignorelockingfailure(1);
|
|
else
|
|
init_ignorelockingfailure(0);
|
|
|
|
if (arg_count(cmd, nosuffix_ARG))
|
|
cmd->current_settings.suffix = 0;
|
|
|
|
if (arg_count(cmd, units_ARG))
|
|
if (!(cmd->current_settings.unit_factor =
|
|
units_to_bytes(arg_str_value(cmd, units_ARG, ""),
|
|
&cmd->current_settings.unit_type))) {
|
|
log_error("Invalid units specification");
|
|
return EINVALID_CMD_LINE;
|
|
}
|
|
|
|
if (arg_count(cmd, trustcache_ARG)) {
|
|
if (arg_count(cmd, all_ARG)) {
|
|
log_error("--trustcache is incompatible with --all");
|
|
return EINVALID_CMD_LINE;
|
|
}
|
|
init_trust_cache(1);
|
|
log_warn("WARNING: Cache file of PVs will be trusted. "
|
|
"New devices holding PVs may get ignored.");
|
|
} else
|
|
init_trust_cache(0);
|
|
|
|
if (arg_count(cmd, noudevsync_ARG)) {
|
|
cmd->current_settings.udev_sync = 0;
|
|
cmd->current_settings.udev_fallback = 1;
|
|
}
|
|
|
|
/* Handle synonyms */
|
|
if (!_merge_synonym(cmd, resizable_ARG, resizeable_ARG) ||
|
|
!_merge_synonym(cmd, allocation_ARG, allocatable_ARG) ||
|
|
!_merge_synonym(cmd, allocation_ARG, resizeable_ARG) ||
|
|
!_merge_synonym(cmd, virtualoriginsize_ARG, virtualsize_ARG))
|
|
return EINVALID_CMD_LINE;
|
|
|
|
if ((!strncmp(cmd->command->name, "pv", 2) &&
|
|
!_merge_synonym(cmd, metadatacopies_ARG, pvmetadatacopies_ARG)) ||
|
|
(!strncmp(cmd->command->name, "vg", 2) &&
|
|
!_merge_synonym(cmd, metadatacopies_ARG, vgmetadatacopies_ARG)))
|
|
return EINVALID_CMD_LINE;
|
|
|
|
/* Zero indicates success */
|
|
return 0;
|
|
}
|
|
|
|
static int _process_common_commands(struct cmd_context *cmd)
|
|
{
|
|
if (arg_count(cmd, help_ARG) || arg_count(cmd, help2_ARG)) {
|
|
_usage(cmd->command->name);
|
|
return ECMD_PROCESSED;
|
|
}
|
|
|
|
if (arg_count(cmd, version_ARG)) {
|
|
return version(cmd, 0, (char **) NULL);
|
|
}
|
|
|
|
/* Zero indicates it's OK to continue processing this command */
|
|
return 0;
|
|
}
|
|
|
|
static void _display_help(void)
|
|
{
|
|
int i;
|
|
|
|
log_error("Available lvm commands:");
|
|
log_error("Use 'lvm help <command>' for more information");
|
|
log_error(" ");
|
|
|
|
for (i = 0; i < _cmdline.num_commands; i++) {
|
|
struct command *com = _cmdline.commands + i;
|
|
|
|
log_error("%-16.16s%s", com->name, com->desc);
|
|
}
|
|
}
|
|
|
|
int help(struct cmd_context *cmd __attribute__((unused)), int argc, char **argv)
|
|
{
|
|
int ret = ECMD_PROCESSED;
|
|
|
|
if (!argc)
|
|
_display_help();
|
|
else {
|
|
int i;
|
|
for (i = 0; i < argc; i++)
|
|
if (!_usage(argv[i]))
|
|
ret = EINVALID_CMD_LINE;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void _apply_settings(struct cmd_context *cmd)
|
|
{
|
|
init_debug(cmd->current_settings.debug);
|
|
init_verbose(cmd->current_settings.verbose + VERBOSE_BASE_LEVEL);
|
|
init_test(cmd->current_settings.test);
|
|
init_full_scan_done(0);
|
|
init_mirror_in_sync(0);
|
|
|
|
init_msg_prefix(cmd->default_settings.msg_prefix);
|
|
init_cmd_name(cmd->default_settings.cmd_name);
|
|
|
|
archive_enable(cmd, cmd->current_settings.archive);
|
|
backup_enable(cmd, cmd->current_settings.backup);
|
|
|
|
set_activation(cmd->current_settings.activation);
|
|
|
|
cmd->fmt = get_format_by_name(cmd, arg_str_value(cmd, metadatatype_ARG,
|
|
cmd->current_settings.fmt_name));
|
|
|
|
cmd->handles_missing_pvs = 0;
|
|
}
|
|
|
|
static const char *_copy_command_line(struct cmd_context *cmd, int argc, char **argv)
|
|
{
|
|
int i, space;
|
|
|
|
/*
|
|
* Build up the complete command line, used as a
|
|
* description for backups.
|
|
*/
|
|
if (!dm_pool_begin_object(cmd->mem, 128))
|
|
goto_bad;
|
|
|
|
for (i = 0; i < argc; i++) {
|
|
space = strchr(argv[i], ' ') ? 1 : 0;
|
|
|
|
if (space && !dm_pool_grow_object(cmd->mem, "'", 1))
|
|
goto_bad;
|
|
|
|
if (!dm_pool_grow_object(cmd->mem, argv[i], strlen(argv[i])))
|
|
goto_bad;
|
|
|
|
if (space && !dm_pool_grow_object(cmd->mem, "'", 1))
|
|
goto_bad;
|
|
|
|
if (i < (argc - 1))
|
|
if (!dm_pool_grow_object(cmd->mem, " ", 1))
|
|
goto_bad;
|
|
}
|
|
|
|
/*
|
|
* Terminate.
|
|
*/
|
|
if (!dm_pool_grow_object(cmd->mem, "\0", 1))
|
|
goto_bad;
|
|
|
|
return dm_pool_end_object(cmd->mem);
|
|
|
|
bad:
|
|
log_error("Couldn't copy command line.");
|
|
dm_pool_abandon_object(cmd->mem);
|
|
return NULL;
|
|
}
|
|
|
|
int lvm_run_command(struct cmd_context *cmd, int argc, char **argv)
|
|
{
|
|
int ret = 0;
|
|
int locking_type;
|
|
struct dm_config_tree *old_cft;
|
|
|
|
init_error_message_produced(0);
|
|
|
|
/* each command should start out with sigint flag cleared */
|
|
sigint_clear();
|
|
|
|
if (!(cmd->cmd_line = _copy_command_line(cmd, argc, argv))) {
|
|
stack;
|
|
return ECMD_FAILED;
|
|
}
|
|
|
|
log_debug("Parsing: %s", cmd->cmd_line);
|
|
|
|
if (!(cmd->command = _find_command(argv[0])))
|
|
return ENO_SUCH_CMD;
|
|
|
|
if (!_process_command_line(cmd, &argc, &argv)) {
|
|
log_error("Error during parsing of command line.");
|
|
return EINVALID_CMD_LINE;
|
|
}
|
|
|
|
set_cmd_name(cmd->command->name);
|
|
|
|
if (arg_count(cmd, config_ARG))
|
|
if (override_config_tree_from_string(cmd, arg_str_value(cmd, config_ARG, ""))) {
|
|
ret = EINVALID_CMD_LINE;
|
|
goto_out;
|
|
}
|
|
|
|
if (arg_count(cmd, config_ARG) || !cmd->config_valid || config_files_changed(cmd)) {
|
|
/* Reinitialise various settings inc. logging, filters */
|
|
if (!refresh_toolcontext(cmd)) {
|
|
old_cft = remove_overridden_config_tree(cmd);
|
|
if (old_cft)
|
|
dm_config_destroy(old_cft);
|
|
log_error("Updated config file invalid. Aborting.");
|
|
return ECMD_FAILED;
|
|
}
|
|
}
|
|
|
|
if ((ret = _get_settings(cmd)))
|
|
goto_out;
|
|
_apply_settings(cmd);
|
|
|
|
log_debug("Processing: %s", cmd->cmd_line);
|
|
|
|
#ifdef O_DIRECT_SUPPORT
|
|
log_debug("O_DIRECT will be used");
|
|
#endif
|
|
|
|
if ((ret = _process_common_commands(cmd))) {
|
|
if (ret != ECMD_PROCESSED)
|
|
stack;
|
|
goto out;
|
|
}
|
|
|
|
if (cmd->metadata_read_only &&
|
|
!(cmd->command->flags & PERMITTED_READ_ONLY)) {
|
|
log_error("%s: Command not permitted while global/metadata_read_only "
|
|
"is set.", cmd->cmd_line);
|
|
goto out;
|
|
}
|
|
|
|
if (arg_count(cmd, nolocking_ARG))
|
|
locking_type = 0;
|
|
else
|
|
locking_type = -1;
|
|
|
|
if (!init_locking(locking_type, cmd, arg_count(cmd, sysinit_ARG))) {
|
|
ret = ECMD_FAILED;
|
|
goto out;
|
|
}
|
|
|
|
ret = cmd->command->fn(cmd, argc, argv);
|
|
|
|
fin_locking();
|
|
|
|
out:
|
|
if (test_mode()) {
|
|
log_verbose("Test mode: Wiping internal cache");
|
|
lvmcache_destroy(cmd, 1);
|
|
}
|
|
|
|
if ((old_cft = remove_overridden_config_tree(cmd))) {
|
|
dm_config_destroy(old_cft);
|
|
/* Move this? */
|
|
if (!refresh_toolcontext(cmd))
|
|
stack;
|
|
}
|
|
|
|
/* FIXME Move this? */
|
|
cmd->current_settings = cmd->default_settings;
|
|
_apply_settings(cmd);
|
|
|
|
if (ret == EINVALID_CMD_LINE && !_cmdline.interactive)
|
|
_short_usage(cmd->command->name);
|
|
|
|
log_debug("Completed: %s", cmd->cmd_line);
|
|
|
|
/*
|
|
* free off any memory the command used.
|
|
*/
|
|
dm_list_init(&cmd->arg_value_groups);
|
|
dm_pool_empty(cmd->mem);
|
|
|
|
reset_lvm_errno(1);
|
|
reset_log_duplicated();
|
|
|
|
return ret;
|
|
}
|
|
|
|
int lvm_return_code(int ret)
|
|
{
|
|
return (ret == ECMD_PROCESSED ? 0 : ret);
|
|
}
|
|
|
|
int lvm_split(char *str, int *argc, char **argv, int max)
|
|
{
|
|
char *b = str, *e;
|
|
*argc = 0;
|
|
|
|
while (*b) {
|
|
while (*b && isspace(*b))
|
|
b++;
|
|
|
|
if ((!*b) || (*b == '#'))
|
|
break;
|
|
|
|
e = b;
|
|
while (*e && !isspace(*e))
|
|
e++;
|
|
|
|
argv[(*argc)++] = b;
|
|
if (!*e)
|
|
break;
|
|
*e++ = '\0';
|
|
b = e;
|
|
if (*argc == max)
|
|
break;
|
|
}
|
|
|
|
return *argc;
|
|
}
|
|
|
|
static const char *_get_cmdline(pid_t pid)
|
|
{
|
|
static char _proc_cmdline[32];
|
|
char buf[256];
|
|
int fd, n = 0;
|
|
|
|
snprintf(buf, sizeof(buf), DEFAULT_PROC_DIR "/%u/cmdline", pid);
|
|
/* FIXME Use generic read code. */
|
|
if ((fd = open(buf, O_RDONLY)) > 0) {
|
|
if ((n = read(fd, _proc_cmdline, sizeof(_proc_cmdline) - 1)) < 0) {
|
|
log_sys_error("read", buf);
|
|
n = 0;
|
|
}
|
|
if (close(fd))
|
|
log_sys_error("close", buf);
|
|
}
|
|
_proc_cmdline[n] = '\0';
|
|
|
|
return _proc_cmdline;
|
|
}
|
|
|
|
static const char *_get_filename(int fd)
|
|
{
|
|
static char filename[PATH_MAX];
|
|
char buf[32]; /* Assumes short DEFAULT_PROC_DIR */
|
|
int size;
|
|
|
|
snprintf(buf, sizeof(buf), DEFAULT_PROC_DIR "/self/fd/%u", fd);
|
|
|
|
if ((size = readlink(buf, filename, sizeof(filename) - 1)) == -1)
|
|
filename[0] = '\0';
|
|
else
|
|
filename[size] = '\0';
|
|
|
|
return filename;
|
|
}
|
|
|
|
static void _close_descriptor(int fd, unsigned suppress_warnings,
|
|
const char *command, pid_t ppid,
|
|
const char *parent_cmdline)
|
|
{
|
|
int r;
|
|
const char *filename;
|
|
|
|
/* Ignore bad file descriptors */
|
|
if (fcntl(fd, F_GETFD) == -1 && errno == EBADF)
|
|
return;
|
|
|
|
if (!suppress_warnings)
|
|
filename = _get_filename(fd);
|
|
|
|
r = close(fd);
|
|
if (suppress_warnings)
|
|
return;
|
|
|
|
if (!r)
|
|
fprintf(stderr, "File descriptor %d (%s) leaked on "
|
|
"%s invocation.", fd, filename, command);
|
|
else if (errno == EBADF)
|
|
return;
|
|
else
|
|
fprintf(stderr, "Close failed on stray file descriptor "
|
|
"%d (%s): %s", fd, filename, strerror(errno));
|
|
|
|
fprintf(stderr, " Parent PID %" PRIpid_t ": %s\n", ppid, parent_cmdline);
|
|
}
|
|
|
|
static void _close_stray_fds(const char *command)
|
|
{
|
|
struct rlimit rlim;
|
|
int fd;
|
|
unsigned suppress_warnings = 0;
|
|
pid_t ppid = getppid();
|
|
const char *parent_cmdline = _get_cmdline(ppid);
|
|
|
|
if (getrlimit(RLIMIT_NOFILE, &rlim) < 0) {
|
|
fprintf(stderr, "getrlimit(RLIMIT_NOFILE) failed: %s\n",
|
|
strerror(errno));
|
|
return;
|
|
}
|
|
|
|
if (getenv("LVM_SUPPRESS_FD_WARNINGS"))
|
|
suppress_warnings = 1;
|
|
|
|
for (fd = 3; fd < (int)rlim.rlim_cur; fd++)
|
|
_close_descriptor(fd, suppress_warnings, command, ppid,
|
|
parent_cmdline);
|
|
}
|
|
|
|
struct cmd_context *init_lvm(void)
|
|
{
|
|
struct cmd_context *cmd;
|
|
|
|
if (!udev_init_library_context())
|
|
stack;
|
|
|
|
if (!(cmd = create_toolcontext(0, NULL, 1)))
|
|
return_NULL;
|
|
|
|
_cmdline.arg_props = &_arg_props[0];
|
|
|
|
if (stored_errno()) {
|
|
destroy_toolcontext(cmd);
|
|
return_NULL;
|
|
}
|
|
|
|
return cmd;
|
|
}
|
|
|
|
static void _fin_commands(void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < _cmdline.num_commands; i++)
|
|
dm_free(_cmdline.commands[i].valid_args);
|
|
|
|
dm_free(_cmdline.commands);
|
|
|
|
_cmdline.commands = NULL;
|
|
_cmdline.num_commands = 0;
|
|
_cmdline.commands_size = 0;
|
|
}
|
|
|
|
void lvm_fin(struct cmd_context *cmd)
|
|
{
|
|
_fin_commands();
|
|
destroy_toolcontext(cmd);
|
|
udev_fin_library_context();
|
|
}
|
|
|
|
static int _run_script(struct cmd_context *cmd, int argc, char **argv)
|
|
{
|
|
FILE *script;
|
|
|
|
char buffer[CMD_LEN];
|
|
int ret = 0;
|
|
int magic_number = 0;
|
|
char *script_file = argv[0];
|
|
|
|
if ((script = fopen(script_file, "r")) == NULL)
|
|
return ENO_SUCH_CMD;
|
|
|
|
while (fgets(buffer, sizeof(buffer), script) != NULL) {
|
|
if (!magic_number) {
|
|
if (buffer[0] == '#' && buffer[1] == '!')
|
|
magic_number = 1;
|
|
else {
|
|
ret = ENO_SUCH_CMD;
|
|
break;
|
|
}
|
|
}
|
|
if ((strlen(buffer) == sizeof(buffer) - 1)
|
|
&& (buffer[sizeof(buffer) - 1] - 2 != '\n')) {
|
|
buffer[50] = '\0';
|
|
log_error("Line too long (max 255) beginning: %s",
|
|
buffer);
|
|
ret = EINVALID_CMD_LINE;
|
|
break;
|
|
}
|
|
if (lvm_split(buffer, &argc, argv, MAX_ARGS) == MAX_ARGS) {
|
|
buffer[50] = '\0';
|
|
log_error("Too many arguments: %s", buffer);
|
|
ret = EINVALID_CMD_LINE;
|
|
break;
|
|
}
|
|
if (!argc)
|
|
continue;
|
|
if (!strcmp(argv[0], "quit") || !strcmp(argv[0], "exit"))
|
|
break;
|
|
ret = lvm_run_command(cmd, argc, argv);
|
|
if (ret != ECMD_PROCESSED) {
|
|
if (!error_message_produced()) {
|
|
log_debug(INTERNAL_ERROR "Failed command did not use log_error");
|
|
log_error("Command failed with status code %d.", ret);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (fclose(script))
|
|
log_sys_error("fclose", script_file);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Determine whether we should fall back and exec the equivalent LVM1 tool
|
|
*/
|
|
static int _lvm1_fallback(struct cmd_context *cmd)
|
|
{
|
|
char vsn[80];
|
|
int dm_present;
|
|
|
|
if (!find_config_tree_int(cmd, "global/fallback_to_lvm1",
|
|
DEFAULT_FALLBACK_TO_LVM1) ||
|
|
strncmp(cmd->kernel_vsn, "2.4.", 4))
|
|
return 0;
|
|
|
|
log_suppress(1);
|
|
dm_present = driver_version(vsn, sizeof(vsn));
|
|
log_suppress(0);
|
|
|
|
if (dm_present || !lvm1_present(cmd))
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static void _exec_lvm1_command(char **argv)
|
|
{
|
|
char path[PATH_MAX];
|
|
|
|
if (dm_snprintf(path, sizeof(path), "%s.lvm1", argv[0]) < 0) {
|
|
log_error("Failed to create LVM1 tool pathname");
|
|
return;
|
|
}
|
|
|
|
execvp(path, argv);
|
|
log_sys_error("execvp", path);
|
|
}
|
|
|
|
static void _nonroot_warning(void)
|
|
{
|
|
if (getuid() || geteuid())
|
|
log_warn("WARNING: Running as a non-root user. Functionality may be unavailable.");
|
|
}
|
|
|
|
int lvm2_main(int argc, char **argv)
|
|
{
|
|
const char *base;
|
|
int ret, alias = 0;
|
|
struct cmd_context *cmd;
|
|
|
|
base = last_path_component(argv[0]);
|
|
if (strcmp(base, "lvm") && strcmp(base, "lvm.static") &&
|
|
strcmp(base, "initrd-lvm"))
|
|
alias = 1;
|
|
|
|
_close_stray_fds(base);
|
|
|
|
if (is_static() && strcmp(base, "lvm.static") &&
|
|
path_exists(LVM_SHARED_PATH) &&
|
|
!getenv("LVM_DID_EXEC")) {
|
|
setenv("LVM_DID_EXEC", base, 1);
|
|
execvp(LVM_SHARED_PATH, argv);
|
|
unsetenv("LVM_DID_EXEC");
|
|
}
|
|
|
|
/* "version" command is simple enough so it doesn't need any complex init */
|
|
if (!alias && argc > 1 && !strcmp(argv[1], "version"))
|
|
return lvm_return_code(version(NULL, argc, argv));
|
|
|
|
if (!(cmd = init_lvm()))
|
|
return -1;
|
|
|
|
cmd->argv = argv;
|
|
lvm_register_commands();
|
|
|
|
if (_lvm1_fallback(cmd)) {
|
|
/* Attempt to run equivalent LVM1 tool instead */
|
|
if (!alias) {
|
|
argv++;
|
|
argc--;
|
|
}
|
|
if (!argc) {
|
|
log_error("Falling back to LVM1 tools, but no "
|
|
"command specified.");
|
|
ret = ECMD_FAILED;
|
|
goto out;
|
|
}
|
|
_exec_lvm1_command(argv);
|
|
ret = ECMD_FAILED;
|
|
goto out;
|
|
}
|
|
#ifdef READLINE_SUPPORT
|
|
if (!alias && argc == 1) {
|
|
_nonroot_warning();
|
|
ret = lvm_shell(cmd, &_cmdline);
|
|
goto out;
|
|
}
|
|
#endif
|
|
|
|
if (!alias) {
|
|
if (argc < 2) {
|
|
log_fatal("Please supply an LVM command.");
|
|
_display_help();
|
|
ret = EINVALID_CMD_LINE;
|
|
goto out;
|
|
}
|
|
|
|
argc--;
|
|
argv++;
|
|
}
|
|
|
|
_nonroot_warning();
|
|
ret = lvm_run_command(cmd, argc, argv);
|
|
if ((ret == ENO_SUCH_CMD) && (!alias))
|
|
ret = _run_script(cmd, argc, argv);
|
|
if (ret == ENO_SUCH_CMD)
|
|
log_error("No such command. Try 'help'.");
|
|
|
|
if ((ret != ECMD_PROCESSED) && !error_message_produced()) {
|
|
log_debug(INTERNAL_ERROR "Failed command did not use log_error");
|
|
log_error("Command failed with status code %d.", ret);
|
|
}
|
|
|
|
out:
|
|
lvm_fin(cmd);
|
|
return lvm_return_code(ret);
|
|
}
|