mirror of
git://sourceware.org/git/lvm2.git
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2099 lines
44 KiB
C
2099 lines
44 KiB
C
/*
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* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
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* Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
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* Copyright (C) 2005 NEC Corperation
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*
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* This file is part of the device-mapper userspace tools.
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*
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* It includes tree drawing code based on pstree: http://psmisc.sourceforge.net/
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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 General Public License v.2.
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*
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* You should have received a copy of the GNU 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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#define _GNU_SOURCE
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#define _FILE_OFFSET_BITS 64
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#include <configure.h>
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#include "libdevmapper.h"
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#include "log.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <dirent.h>
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#include <errno.h>
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#include <unistd.h>
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#include <libgen.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include <sys/param.h>
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#include <locale.h>
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#include <langinfo.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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/* FIXME Unused so far */
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#undef HAVE_SYS_STATVFS_H
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#ifdef HAVE_SYS_STATVFS_H
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# include <sys/statvfs.h>
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#endif
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#ifdef HAVE_SYS_IOCTL_H
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# include <sys/ioctl.h>
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#endif
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#if HAVE_TERMIOS_H
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# include <termios.h>
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#endif
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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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#ifndef TEMP_FAILURE_RETRY
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# define TEMP_FAILURE_RETRY(expression) \
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(__extension__ \
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({ long int __result; \
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do __result = (long int) (expression); \
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while (__result == -1L && errno == EINTR); \
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__result; }))
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#endif
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#ifdef linux
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# include "kdev_t.h"
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#else
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# define MAJOR(x) major((x))
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# define MINOR(x) minor((x))
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# define MKDEV(x,y) makedev((x),(y))
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#endif
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#define LINE_SIZE 4096
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#define ARGS_MAX 256
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#define LOOP_TABLE_SIZE (PATH_MAX + 255)
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/* FIXME Should be elsewhere */
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#define SECTOR_SHIFT 9L
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#define DEV_PATH "/dev/"
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#define err(msg, x...) fprintf(stderr, msg "\n", ##x)
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/*
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* We have only very simple switches ATM.
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*/
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enum {
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READ_ONLY = 0,
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COLS_ARG,
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EXEC_ARG,
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FORCE_ARG,
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GID_ARG,
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MAJOR_ARG,
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MINOR_ARG,
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MODE_ARG,
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NOFLUSH_ARG,
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NOHEADINGS_ARG,
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NOLOCKFS_ARG,
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NOOPENCOUNT_ARG,
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NOTABLE_ARG,
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OPTIONS_ARG,
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SHOWKEYS_ARG,
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TABLE_ARG,
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TARGET_ARG,
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TREE_ARG,
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UID_ARG,
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UUID_ARG,
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VERBOSE_ARG,
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VERSION_ARG,
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NUM_SWITCHES
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};
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static int _switches[NUM_SWITCHES];
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static int _values[NUM_SWITCHES];
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static int _num_devices;
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static char *_uuid;
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static char *_fields;
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static char *_table;
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static char *_target;
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static char *_command;
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static struct dm_tree *_dtree;
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/*
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* Commands
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*/
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static int _parse_line(struct dm_task *dmt, char *buffer, const char *file,
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int line)
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{
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char ttype[LINE_SIZE], *ptr, *comment;
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unsigned long long start, size;
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int n;
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/* trim trailing space */
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for (ptr = buffer + strlen(buffer) - 1; ptr >= buffer; ptr--)
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if (!isspace((int) *ptr))
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break;
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ptr++;
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*ptr = '\0';
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/* trim leading space */
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for (ptr = buffer; *ptr && isspace((int) *ptr); ptr++)
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;
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if (!*ptr || *ptr == '#')
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return 1;
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if (sscanf(ptr, "%llu %llu %s %n",
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&start, &size, ttype, &n) < 3) {
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err("Invalid format on line %d of table %s", line, file);
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return 0;
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}
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ptr += n;
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if ((comment = strchr(ptr, (int) '#')))
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*comment = '\0';
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if (!dm_task_add_target(dmt, start, size, ttype, ptr))
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return 0;
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return 1;
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}
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static int _parse_file(struct dm_task *dmt, const char *file)
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{
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char *buffer = NULL;
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size_t buffer_size = 0;
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FILE *fp;
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int r = 0, line = 0;
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/* one-line table on cmdline */
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if (_table)
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return _parse_line(dmt, _table, "", ++line);
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/* OK for empty stdin */
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if (file) {
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if (!(fp = fopen(file, "r"))) {
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err("Couldn't open '%s' for reading", file);
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return 0;
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}
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} else
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fp = stdin;
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#ifndef HAVE_GETLINE
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buffer_size = LINE_SIZE;
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if (!(buffer = dm_malloc(buffer_size))) {
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err("Failed to malloc line buffer.");
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return 0;
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}
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while (fgets(buffer, (int) buffer_size, fp))
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#else
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while (getline(&buffer, &buffer_size, fp) > 0)
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#endif
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if (!_parse_line(dmt, buffer, file ? : "on stdin", ++line))
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goto out;
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r = 1;
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out:
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#ifndef HAVE_GETLINE
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dm_free(buffer);
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#else
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free(buffer);
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#endif
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if (file)
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fclose(fp);
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return r;
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}
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static void _display_info_cols_noheadings(struct dm_task *dmt,
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struct dm_info *info)
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{
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const char *uuid;
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if (!info->exists)
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return;
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uuid = dm_task_get_uuid(dmt);
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if (_switches[OPTIONS_ARG])
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printf("%s\n", dm_task_get_name(dmt));
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else
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printf("%s:%d:%d:%s%s%s%s:%d:%d:%" PRIu32 ":%s\n",
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dm_task_get_name(dmt),
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info->major, info->minor,
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info->live_table ? "L" : "-",
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info->inactive_table ? "I" : "-",
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info->suspended ? "s" : "-",
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info->read_only ? "r" : "w",
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info->open_count, info->target_count, info->event_nr,
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uuid && *uuid ? uuid : "");
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}
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static void _display_info_cols(struct dm_task *dmt, struct dm_info *info)
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{
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static int _headings = 0;
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const char *uuid;
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if (!info->exists) {
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printf("Device does not exist.\n");
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return;
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}
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if (!_headings) {
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if (_switches[OPTIONS_ARG])
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printf("Name\n");
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else
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printf("Name Maj Min Stat Open Targ "
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"Event UUID\n");
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_headings = 1;
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}
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if (_switches[OPTIONS_ARG])
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printf("%s\n", dm_task_get_name(dmt));
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else {
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printf("%-16s %3d %3d %s%s%s%s %4d %4d %6" PRIu32 " ",
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dm_task_get_name(dmt),
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info->major, info->minor,
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info->live_table ? "L" : "-",
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info->inactive_table ? "I" : "-",
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info->suspended ? "s" : "-",
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info->read_only ? "r" : "w",
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info->open_count, info->target_count, info->event_nr);
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if ((uuid = dm_task_get_uuid(dmt)) && *uuid)
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printf("%s", uuid);
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printf("\n");
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}
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}
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static void _display_info_long(struct dm_task *dmt, struct dm_info *info)
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{
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const char *uuid;
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if (!info->exists) {
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printf("Device does not exist.\n");
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return;
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}
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printf("Name: %s\n", dm_task_get_name(dmt));
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printf("State: %s%s\n",
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info->suspended ? "SUSPENDED" : "ACTIVE",
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info->read_only ? " (READ-ONLY)" : "");
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if (!info->live_table && !info->inactive_table)
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printf("Tables present: None\n");
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else
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printf("Tables present: %s%s%s\n",
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info->live_table ? "LIVE" : "",
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info->live_table && info->inactive_table ? " & " : "",
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info->inactive_table ? "INACTIVE" : "");
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if (info->open_count != -1)
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printf("Open count: %d\n", info->open_count);
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printf("Event number: %" PRIu32 "\n", info->event_nr);
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printf("Major, minor: %d, %d\n", info->major, info->minor);
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if (info->target_count != -1)
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printf("Number of targets: %d\n", info->target_count);
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if ((uuid = dm_task_get_uuid(dmt)) && *uuid)
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printf("UUID: %s\n", uuid);
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printf("\n");
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}
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static int _display_info(struct dm_task *dmt)
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{
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struct dm_info info;
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if (!dm_task_get_info(dmt, &info))
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return 0;
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if (!_switches[COLS_ARG])
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_display_info_long(dmt, &info);
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else if (_switches[NOHEADINGS_ARG])
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_display_info_cols_noheadings(dmt, &info);
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else
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_display_info_cols(dmt, &info);
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return info.exists ? 1 : 0;
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}
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static int _set_task_device(struct dm_task *dmt, const char *name, int optional)
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{
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if (name) {
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if (!dm_task_set_name(dmt, name))
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return 0;
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} else if (_switches[UUID_ARG]) {
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if (!dm_task_set_uuid(dmt, _uuid))
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return 0;
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} else if (_switches[MAJOR_ARG] && _switches[MINOR_ARG]) {
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if (!dm_task_set_major(dmt, _values[MAJOR_ARG]) ||
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!dm_task_set_minor(dmt, _values[MINOR_ARG]))
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return 0;
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} else if (!optional) {
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fprintf(stderr, "No device specified.\n");
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return 0;
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}
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return 1;
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}
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static int _load(int argc, char **argv, void *data __attribute((unused)))
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{
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int r = 0;
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struct dm_task *dmt;
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const char *file = NULL;
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const char *name = NULL;
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if (_switches[NOTABLE_ARG]) {
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err("--notable only available when creating new device\n");
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return 0;
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}
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if (!_switches[UUID_ARG] && !_switches[MAJOR_ARG]) {
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if (argc == 1) {
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err("Please specify device.\n");
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return 0;
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}
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name = argv[1];
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argc--;
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argv++;
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} else if (argc > 2) {
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err("Too many command line arguments.\n");
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return 0;
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}
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if (argc == 2)
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file = argv[1];
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if (!(dmt = dm_task_create(DM_DEVICE_RELOAD)))
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return 0;
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if (!_set_task_device(dmt, name, 0))
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goto out;
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if (!_switches[NOTABLE_ARG] && !_parse_file(dmt, file))
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goto out;
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if (_switches[READ_ONLY] && !dm_task_set_ro(dmt))
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goto out;
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if (_switches[NOOPENCOUNT_ARG] && !dm_task_no_open_count(dmt))
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goto out;
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if (!dm_task_run(dmt))
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goto out;
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r = 1;
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if (_switches[VERBOSE_ARG])
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r = _display_info(dmt);
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out:
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dm_task_destroy(dmt);
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return r;
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}
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static int _create(int argc, char **argv, void *data __attribute((unused)))
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{
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int r = 0;
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struct dm_task *dmt;
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const char *file = NULL;
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|
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if (argc == 3)
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file = argv[2];
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if (!(dmt = dm_task_create(DM_DEVICE_CREATE)))
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return 0;
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|
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if (!dm_task_set_name(dmt, argv[1]))
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goto out;
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|
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if (_switches[UUID_ARG] && !dm_task_set_uuid(dmt, _uuid))
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goto out;
|
|
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if (!_switches[NOTABLE_ARG] && !_parse_file(dmt, file))
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goto out;
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|
|
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if (_switches[READ_ONLY] && !dm_task_set_ro(dmt))
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goto out;
|
|
|
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if (_switches[MAJOR_ARG] && !dm_task_set_major(dmt, _values[MAJOR_ARG]))
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goto out;
|
|
|
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if (_switches[MINOR_ARG] && !dm_task_set_minor(dmt, _values[MINOR_ARG]))
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goto out;
|
|
|
|
if (_switches[UID_ARG] && !dm_task_set_uid(dmt, _values[UID_ARG]))
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goto out;
|
|
|
|
if (_switches[GID_ARG] && !dm_task_set_gid(dmt, _values[GID_ARG]))
|
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goto out;
|
|
|
|
if (_switches[MODE_ARG] && !dm_task_set_mode(dmt, _values[MODE_ARG]))
|
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goto out;
|
|
|
|
if (_switches[NOOPENCOUNT_ARG] && !dm_task_no_open_count(dmt))
|
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goto out;
|
|
|
|
if (!dm_task_run(dmt))
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goto out;
|
|
|
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r = 1;
|
|
|
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if (_switches[VERBOSE_ARG])
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r = _display_info(dmt);
|
|
|
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out:
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dm_task_destroy(dmt);
|
|
|
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return r;
|
|
}
|
|
|
|
static int _rename(int argc, char **argv, void *data __attribute((unused)))
|
|
{
|
|
int r = 0;
|
|
struct dm_task *dmt;
|
|
|
|
if (!(dmt = dm_task_create(DM_DEVICE_RENAME)))
|
|
return 0;
|
|
|
|
/* FIXME Kernel doesn't support uuid or device number here yet */
|
|
if (!_set_task_device(dmt, (argc == 3) ? argv[1] : NULL, 0))
|
|
goto out;
|
|
|
|
if (!dm_task_set_newname(dmt, argv[argc - 1]))
|
|
goto out;
|
|
|
|
if (_switches[NOOPENCOUNT_ARG] && !dm_task_no_open_count(dmt))
|
|
goto out;
|
|
|
|
if (!dm_task_run(dmt))
|
|
goto out;
|
|
|
|
r = 1;
|
|
|
|
out:
|
|
dm_task_destroy(dmt);
|
|
|
|
return r;
|
|
}
|
|
|
|
static int _message(int argc, char **argv, void *data __attribute((unused)))
|
|
{
|
|
int r = 0, i;
|
|
size_t sz = 1;
|
|
struct dm_task *dmt;
|
|
char *str;
|
|
|
|
if (!(dmt = dm_task_create(DM_DEVICE_TARGET_MSG)))
|
|
return 0;
|
|
|
|
if (_switches[UUID_ARG] || _switches[MAJOR_ARG]) {
|
|
if (!_set_task_device(dmt, NULL, 0))
|
|
goto out;
|
|
} else {
|
|
if (!_set_task_device(dmt, argv[1], 0))
|
|
goto out;
|
|
argc--;
|
|
argv++;
|
|
}
|
|
|
|
if (!dm_task_set_sector(dmt, (uint64_t) atoll(argv[1])))
|
|
goto out;
|
|
|
|
argc -= 2;
|
|
argv += 2;
|
|
|
|
if (argc <= 0)
|
|
err("No message supplied.\n");
|
|
|
|
for (i = 0; i < argc; i++)
|
|
sz += strlen(argv[i]) + 1;
|
|
|
|
if (!(str = dm_malloc(sz))) {
|
|
err("message string allocation failed");
|
|
goto out;
|
|
}
|
|
|
|
memset(str, 0, sz);
|
|
|
|
for (i = 0; i < argc; i++) {
|
|
if (i)
|
|
strcat(str, " ");
|
|
strcat(str, argv[i]);
|
|
}
|
|
|
|
if (!dm_task_set_message(dmt, str))
|
|
goto out;
|
|
|
|
dm_free(str);
|
|
|
|
if (_switches[NOOPENCOUNT_ARG] && !dm_task_no_open_count(dmt))
|
|
goto out;
|
|
|
|
if (!dm_task_run(dmt))
|
|
goto out;
|
|
|
|
r = 1;
|
|
|
|
out:
|
|
dm_task_destroy(dmt);
|
|
|
|
return r;
|
|
}
|
|
|
|
static int _setgeometry(int argc, char **argv, void *data __attribute((unused)))
|
|
{
|
|
int r = 0;
|
|
struct dm_task *dmt;
|
|
|
|
if (!(dmt = dm_task_create(DM_DEVICE_SET_GEOMETRY)))
|
|
return 0;
|
|
|
|
if (_switches[UUID_ARG] || _switches[MAJOR_ARG]) {
|
|
if (!_set_task_device(dmt, NULL, 0))
|
|
goto out;
|
|
} else {
|
|
if (!_set_task_device(dmt, argv[1], 0))
|
|
goto out;
|
|
argc--;
|
|
argv++;
|
|
}
|
|
|
|
if (!dm_task_set_geometry(dmt, argv[1], argv[2], argv[3], argv[4]))
|
|
goto out;
|
|
|
|
/* run the task */
|
|
if (!dm_task_run(dmt))
|
|
goto out;
|
|
|
|
r = 1;
|
|
|
|
out:
|
|
dm_task_destroy(dmt);
|
|
|
|
return r;
|
|
}
|
|
|
|
static int _version(int argc __attribute((unused)), char **argv __attribute((unused)), void *data __attribute((unused)))
|
|
{
|
|
char version[80];
|
|
|
|
if (dm_get_library_version(version, sizeof(version)))
|
|
printf("Library version: %s\n", version);
|
|
|
|
if (!dm_driver_version(version, sizeof(version)))
|
|
return 0;
|
|
|
|
printf("Driver version: %s\n", version);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int _simple(int task, const char *name, uint32_t event_nr, int display)
|
|
{
|
|
int r = 0;
|
|
|
|
struct dm_task *dmt;
|
|
|
|
if (!(dmt = dm_task_create(task)))
|
|
return 0;
|
|
|
|
if (!_set_task_device(dmt, name, 0))
|
|
goto out;
|
|
|
|
if (event_nr && !dm_task_set_event_nr(dmt, event_nr))
|
|
goto out;
|
|
|
|
if (_switches[NOFLUSH_ARG] && !dm_task_no_flush(dmt))
|
|
goto out;
|
|
|
|
if (_switches[NOOPENCOUNT_ARG] && !dm_task_no_open_count(dmt))
|
|
goto out;
|
|
|
|
if (_switches[NOLOCKFS_ARG] && !dm_task_skip_lockfs(dmt))
|
|
goto out;
|
|
|
|
r = dm_task_run(dmt);
|
|
|
|
if (r && display && _switches[VERBOSE_ARG])
|
|
r = _display_info(dmt);
|
|
|
|
out:
|
|
dm_task_destroy(dmt);
|
|
return r;
|
|
}
|
|
|
|
static int _suspend(int argc, char **argv, void *data __attribute((unused)))
|
|
{
|
|
return _simple(DM_DEVICE_SUSPEND, argc > 1 ? argv[1] : NULL, 0, 1);
|
|
}
|
|
|
|
static int _resume(int argc, char **argv, void *data __attribute((unused)))
|
|
{
|
|
return _simple(DM_DEVICE_RESUME, argc > 1 ? argv[1] : NULL, 0, 1);
|
|
}
|
|
|
|
static int _clear(int argc, char **argv, void *data __attribute((unused)))
|
|
{
|
|
return _simple(DM_DEVICE_CLEAR, argc > 1 ? argv[1] : NULL, 0, 1);
|
|
}
|
|
|
|
static int _wait(int argc, char **argv, void *data __attribute((unused)))
|
|
{
|
|
const char *name = NULL;
|
|
|
|
if (!_switches[UUID_ARG] && !_switches[MAJOR_ARG]) {
|
|
if (argc == 1) {
|
|
err("No device specified.");
|
|
return 0;
|
|
}
|
|
name = argv[1];
|
|
argc--, argv++;
|
|
}
|
|
|
|
return _simple(DM_DEVICE_WAITEVENT, name,
|
|
(argc > 1) ? (uint32_t) atoi(argv[argc - 1]) : 0, 1);
|
|
}
|
|
|
|
static int _process_all(int argc, char **argv, int silent,
|
|
int (*fn) (int argc, char **argv, void *data))
|
|
{
|
|
int r = 1;
|
|
struct dm_names *names;
|
|
unsigned next = 0;
|
|
|
|
struct dm_task *dmt;
|
|
|
|
if (!(dmt = dm_task_create(DM_DEVICE_LIST)))
|
|
return 0;
|
|
|
|
if (!dm_task_run(dmt)) {
|
|
r = 0;
|
|
goto out;
|
|
}
|
|
|
|
if (!(names = dm_task_get_names(dmt))) {
|
|
r = 0;
|
|
goto out;
|
|
}
|
|
|
|
if (!names->dev) {
|
|
if (!silent)
|
|
printf("No devices found\n");
|
|
goto out;
|
|
}
|
|
|
|
do {
|
|
names = (void *) names + next;
|
|
if (!fn(argc, argv, (void *) names))
|
|
r = 0;
|
|
next = names->next;
|
|
} while (next);
|
|
|
|
out:
|
|
dm_task_destroy(dmt);
|
|
return r;
|
|
}
|
|
|
|
static uint64_t _get_device_size(const char *name)
|
|
{
|
|
uint64_t start, length, size = UINT64_C(0);
|
|
struct dm_info info;
|
|
char *target_type, *params;
|
|
struct dm_task *dmt;
|
|
void *next = NULL;
|
|
|
|
if (!(dmt = dm_task_create(DM_DEVICE_TABLE)))
|
|
return 0;
|
|
|
|
if (!_set_task_device(dmt, name, 0))
|
|
goto out;
|
|
|
|
if (_switches[NOOPENCOUNT_ARG] && !dm_task_no_open_count(dmt))
|
|
goto out;
|
|
|
|
if (!dm_task_run(dmt))
|
|
goto out;
|
|
|
|
if (!dm_task_get_info(dmt, &info) || !info.exists)
|
|
goto out;
|
|
|
|
do {
|
|
next = dm_get_next_target(dmt, next, &start, &length,
|
|
&target_type, ¶ms);
|
|
size += length;
|
|
} while (next);
|
|
|
|
out:
|
|
dm_task_destroy(dmt);
|
|
return size;
|
|
}
|
|
|
|
static int _error_device(int argc __attribute((unused)), char **argv __attribute((unused)), void *data)
|
|
{
|
|
struct dm_names *names = (struct dm_names *) data;
|
|
struct dm_task *dmt;
|
|
const char *name;
|
|
uint64_t size;
|
|
int r = 0;
|
|
|
|
if (data)
|
|
name = names->name;
|
|
else
|
|
name = argv[1];
|
|
|
|
size = _get_device_size(name);
|
|
|
|
if (!(dmt = dm_task_create(DM_DEVICE_RELOAD)))
|
|
return 0;
|
|
|
|
if (!_set_task_device(dmt, name, 0))
|
|
goto error;
|
|
|
|
if (!dm_task_add_target(dmt, 0, size, "error", ""))
|
|
goto error;
|
|
|
|
if (_switches[READ_ONLY] && !dm_task_set_ro(dmt))
|
|
goto error;
|
|
|
|
if (_switches[NOOPENCOUNT_ARG] && !dm_task_no_open_count(dmt))
|
|
goto error;
|
|
|
|
if (!dm_task_run(dmt))
|
|
goto error;
|
|
|
|
if (!_simple(DM_DEVICE_RESUME, name, 0, 0)) {
|
|
_simple(DM_DEVICE_CLEAR, name, 0, 0);
|
|
goto error;
|
|
}
|
|
|
|
r = 1;
|
|
|
|
error:
|
|
dm_task_destroy(dmt);
|
|
return r;
|
|
}
|
|
|
|
static int _remove(int argc, char **argv, void *data __attribute((unused)))
|
|
{
|
|
int r;
|
|
|
|
if (_switches[FORCE_ARG] && argc > 1)
|
|
r = _error_device(argc, argv, NULL);
|
|
|
|
return _simple(DM_DEVICE_REMOVE, argc > 1 ? argv[1] : NULL, 0, 0);
|
|
}
|
|
|
|
static int _count_devices(int argc __attribute((unused)), char **argv __attribute((unused)), void *data __attribute((unused)))
|
|
{
|
|
_num_devices++;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int _remove_all(int argc __attribute((unused)), char **argv __attribute((unused)), void *data __attribute((unused)))
|
|
{
|
|
int r;
|
|
|
|
/* Remove all closed devices */
|
|
r = _simple(DM_DEVICE_REMOVE_ALL, "", 0, 0) | dm_mknodes(NULL);
|
|
|
|
if (!_switches[FORCE_ARG])
|
|
return r;
|
|
|
|
_num_devices = 0;
|
|
r |= _process_all(argc, argv, 1, _count_devices);
|
|
|
|
/* No devices left? */
|
|
if (!_num_devices)
|
|
return r;
|
|
|
|
r |= _process_all(argc, argv, 1, _error_device);
|
|
r |= _simple(DM_DEVICE_REMOVE_ALL, "", 0, 0) | dm_mknodes(NULL);
|
|
|
|
_num_devices = 0;
|
|
r |= _process_all(argc, argv, 1, _count_devices);
|
|
if (!_num_devices)
|
|
return r;
|
|
|
|
fprintf(stderr, "Unable to remove %d device(s).\n", _num_devices);
|
|
|
|
return r;
|
|
}
|
|
|
|
static void _display_dev(struct dm_task *dmt, const char *name)
|
|
{
|
|
struct dm_info info;
|
|
|
|
if (dm_task_get_info(dmt, &info))
|
|
printf("%s\t(%u, %u)\n", name, info.major, info.minor);
|
|
}
|
|
|
|
static int _mknodes(int argc, char **argv, void *data __attribute((unused)))
|
|
{
|
|
return dm_mknodes(argc > 1 ? argv[1] : NULL);
|
|
}
|
|
|
|
static int _exec_command(const char *name)
|
|
{
|
|
int n;
|
|
static char path[PATH_MAX];
|
|
static char *args[ARGS_MAX + 1];
|
|
static int argc = 0;
|
|
char *c;
|
|
pid_t pid;
|
|
|
|
if (argc < 0)
|
|
return 0;
|
|
|
|
if (!dm_mknodes(name))
|
|
return 0;
|
|
|
|
n = snprintf(path, sizeof(path), "%s/%s", dm_dir(), name);
|
|
if (n < 0 || n > (int) sizeof(path) - 1)
|
|
return 0;
|
|
|
|
if (!argc) {
|
|
c = _command;
|
|
while (argc < ARGS_MAX) {
|
|
while (*c && isspace(*c))
|
|
c++;
|
|
if (!*c)
|
|
break;
|
|
args[argc++] = c;
|
|
while (*c && !isspace(*c))
|
|
c++;
|
|
if (*c)
|
|
*c++ = '\0';
|
|
}
|
|
|
|
if (!argc) {
|
|
argc = -1;
|
|
return 0;
|
|
}
|
|
|
|
if (argc == ARGS_MAX) {
|
|
err("Too many args to --exec\n");
|
|
argc = -1;
|
|
return 0;
|
|
}
|
|
|
|
args[argc++] = path;
|
|
args[argc] = NULL;
|
|
}
|
|
|
|
if (!(pid = fork())) {
|
|
execvp(args[0], args);
|
|
exit(127);
|
|
} else if (pid < (pid_t) 0)
|
|
return 0;
|
|
|
|
TEMP_FAILURE_RETRY(waitpid(pid, NULL, 0));
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int _status(int argc, char **argv, void *data)
|
|
{
|
|
int r = 0;
|
|
struct dm_task *dmt;
|
|
void *next = NULL;
|
|
uint64_t start, length;
|
|
char *target_type = NULL;
|
|
char *params, *c;
|
|
int cmd;
|
|
struct dm_names *names = (struct dm_names *) data;
|
|
const char *name = NULL;
|
|
int matched = 0;
|
|
int ls_only = 0;
|
|
struct dm_info info;
|
|
|
|
if (data)
|
|
name = names->name;
|
|
else {
|
|
if (argc == 1 && !_switches[UUID_ARG] && !_switches[MAJOR_ARG])
|
|
return _process_all(argc, argv, 0, _status);
|
|
if (argc == 2)
|
|
name = argv[1];
|
|
}
|
|
|
|
if (!strcmp(argv[0], "table"))
|
|
cmd = DM_DEVICE_TABLE;
|
|
else
|
|
cmd = DM_DEVICE_STATUS;
|
|
|
|
if (!strcmp(argv[0], "ls"))
|
|
ls_only = 1;
|
|
|
|
if (!(dmt = dm_task_create(cmd)))
|
|
return 0;
|
|
|
|
if (!_set_task_device(dmt, name, 0))
|
|
goto out;
|
|
|
|
if (_switches[NOOPENCOUNT_ARG] && !dm_task_no_open_count(dmt))
|
|
goto out;
|
|
|
|
if (!dm_task_run(dmt))
|
|
goto out;
|
|
|
|
if (!dm_task_get_info(dmt, &info) || !info.exists)
|
|
goto out;
|
|
|
|
if (!name)
|
|
name = dm_task_get_name(dmt);
|
|
|
|
/* Fetch targets and print 'em */
|
|
do {
|
|
next = dm_get_next_target(dmt, next, &start, &length,
|
|
&target_type, ¶ms);
|
|
/* Skip if target type doesn't match */
|
|
if (_switches[TARGET_ARG] &&
|
|
(!target_type || strcmp(target_type, _target)))
|
|
continue;
|
|
if (ls_only) {
|
|
if (!_switches[EXEC_ARG] || !_command ||
|
|
_switches[VERBOSE_ARG])
|
|
_display_dev(dmt, name);
|
|
next = NULL;
|
|
} else if (!_switches[EXEC_ARG] || !_command ||
|
|
_switches[VERBOSE_ARG]) {
|
|
if (!matched && _switches[VERBOSE_ARG])
|
|
_display_info(dmt);
|
|
if (data && !_switches[VERBOSE_ARG])
|
|
printf("%s: ", name);
|
|
if (target_type) {
|
|
|
|
/* Suppress encryption key */
|
|
if (!_switches[SHOWKEYS_ARG] &&
|
|
!strcmp(target_type, "crypt")) {
|
|
c = params;
|
|
while (*c && *c != ' ')
|
|
c++;
|
|
c++;
|
|
while (*c && *c != ' ')
|
|
*c++ = '0';
|
|
}
|
|
printf("%" PRIu64 " %" PRIu64 " %s %s",
|
|
start, length, target_type, params);
|
|
}
|
|
printf("\n");
|
|
}
|
|
matched = 1;
|
|
} while (next);
|
|
|
|
if (data && _switches[VERBOSE_ARG] && matched && !ls_only)
|
|
printf("\n");
|
|
|
|
if (matched && _switches[EXEC_ARG] && _command && !_exec_command(name))
|
|
goto out;
|
|
|
|
r = 1;
|
|
|
|
out:
|
|
dm_task_destroy(dmt);
|
|
return r;
|
|
}
|
|
|
|
/* Show target names and their version numbers */
|
|
static int _targets(int argc __attribute((unused)), char **argv __attribute((unused)), void *data __attribute((unused)))
|
|
{
|
|
int r = 0;
|
|
struct dm_task *dmt;
|
|
struct dm_versions *target;
|
|
struct dm_versions *last_target;
|
|
|
|
if (!(dmt = dm_task_create(DM_DEVICE_LIST_VERSIONS)))
|
|
return 0;
|
|
|
|
if (!dm_task_run(dmt))
|
|
goto out;
|
|
|
|
target = dm_task_get_versions(dmt);
|
|
|
|
/* Fetch targets and print 'em */
|
|
do {
|
|
last_target = target;
|
|
|
|
printf("%-16s v%d.%d.%d\n", target->name, target->version[0],
|
|
target->version[1], target->version[2]);
|
|
|
|
target = (void *) target + target->next;
|
|
} while (last_target != target);
|
|
|
|
r = 1;
|
|
|
|
out:
|
|
dm_task_destroy(dmt);
|
|
return r;
|
|
}
|
|
|
|
static int _info(int argc, char **argv, void *data)
|
|
{
|
|
int r = 0;
|
|
|
|
struct dm_task *dmt;
|
|
struct dm_names *names = (struct dm_names *) data;
|
|
char *name = NULL;
|
|
|
|
if (data)
|
|
name = names->name;
|
|
else {
|
|
if (argc == 1 && !_switches[UUID_ARG] && !_switches[MAJOR_ARG])
|
|
return _process_all(argc, argv, 0, _info);
|
|
if (argc == 2)
|
|
name = argv[1];
|
|
}
|
|
|
|
if (!(dmt = dm_task_create(DM_DEVICE_INFO)))
|
|
return 0;
|
|
|
|
if (!_set_task_device(dmt, name, 0))
|
|
goto out;
|
|
|
|
if (_switches[NOOPENCOUNT_ARG] && !dm_task_no_open_count(dmt))
|
|
goto out;
|
|
|
|
if (!dm_task_run(dmt))
|
|
goto out;
|
|
|
|
r = _display_info(dmt);
|
|
|
|
out:
|
|
dm_task_destroy(dmt);
|
|
return r;
|
|
}
|
|
|
|
static int _deps(int argc, char **argv, void *data)
|
|
{
|
|
int r = 0;
|
|
uint32_t i;
|
|
struct dm_deps *deps;
|
|
struct dm_task *dmt;
|
|
struct dm_info info;
|
|
struct dm_names *names = (struct dm_names *) data;
|
|
char *name = NULL;
|
|
|
|
if (data)
|
|
name = names->name;
|
|
else {
|
|
if (argc == 1 && !_switches[UUID_ARG] && !_switches[MAJOR_ARG])
|
|
return _process_all(argc, argv, 0, _deps);
|
|
if (argc == 2)
|
|
name = argv[1];
|
|
}
|
|
|
|
if (!(dmt = dm_task_create(DM_DEVICE_DEPS)))
|
|
return 0;
|
|
|
|
if (!_set_task_device(dmt, name, 0))
|
|
goto out;
|
|
|
|
if (_switches[NOOPENCOUNT_ARG] && !dm_task_no_open_count(dmt))
|
|
goto out;
|
|
|
|
if (!dm_task_run(dmt))
|
|
goto out;
|
|
|
|
if (!dm_task_get_info(dmt, &info))
|
|
goto out;
|
|
|
|
if (!(deps = dm_task_get_deps(dmt)))
|
|
goto out;
|
|
|
|
if (!info.exists) {
|
|
printf("Device does not exist.\n");
|
|
r = 1;
|
|
goto out;
|
|
}
|
|
|
|
if (_switches[VERBOSE_ARG])
|
|
_display_info(dmt);
|
|
|
|
if (data && !_switches[VERBOSE_ARG])
|
|
printf("%s: ", name);
|
|
printf("%d dependencies\t:", deps->count);
|
|
|
|
for (i = 0; i < deps->count; i++)
|
|
printf(" (%d, %d)",
|
|
(int) MAJOR(deps->device[i]),
|
|
(int) MINOR(deps->device[i]));
|
|
printf("\n");
|
|
|
|
if (data && _switches[VERBOSE_ARG])
|
|
printf("\n");
|
|
|
|
r = 1;
|
|
|
|
out:
|
|
dm_task_destroy(dmt);
|
|
return r;
|
|
}
|
|
|
|
static int _display_name(int argc __attribute((unused)), char **argv __attribute((unused)), void *data)
|
|
{
|
|
struct dm_names *names = (struct dm_names *) data;
|
|
|
|
printf("%s\t(%d, %d)\n", names->name,
|
|
(int) MAJOR(names->dev), (int) MINOR(names->dev));
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Tree drawing code
|
|
*/
|
|
|
|
enum {
|
|
TR_DEVICE=0, /* display device major:minor number */
|
|
TR_TABLE,
|
|
TR_STATUS,
|
|
TR_ACTIVE,
|
|
TR_RW,
|
|
TR_OPENCOUNT,
|
|
TR_UUID,
|
|
TR_COMPACT,
|
|
TR_TRUNCATE,
|
|
TR_BOTTOMUP,
|
|
NUM_TREEMODE,
|
|
};
|
|
|
|
static int _tree_switches[NUM_TREEMODE];
|
|
|
|
#define TR_PRINT_ATTRIBUTE ( _tree_switches[TR_ACTIVE] || \
|
|
_tree_switches[TR_RW] || \
|
|
_tree_switches[TR_OPENCOUNT] || \
|
|
_tree_switches[TR_UUID] )
|
|
|
|
#define TR_PRINT_TARGETS ( _tree_switches[TR_TABLE] || \
|
|
_tree_switches[TR_STATUS] )
|
|
|
|
/* Compact - fewer newlines */
|
|
#define TR_PRINT_COMPACT (_tree_switches[TR_COMPACT] && \
|
|
!TR_PRINT_ATTRIBUTE && \
|
|
!TR_PRINT_TARGETS)
|
|
|
|
/* FIXME Get rid of this */
|
|
#define MAX_DEPTH 100
|
|
|
|
/* Drawing character definition from pstree */
|
|
/* [pstree comment] UTF-8 defines by Johan Myreen, updated by Ben Winslow */
|
|
#define UTF_V "\342\224\202" /* U+2502, Vertical line drawing char */
|
|
#define UTF_VR "\342\224\234" /* U+251C, Vertical and right */
|
|
#define UTF_H "\342\224\200" /* U+2500, Horizontal */
|
|
#define UTF_UR "\342\224\224" /* U+2514, Up and right */
|
|
#define UTF_HD "\342\224\254" /* U+252C, Horizontal and down */
|
|
|
|
#define VT_BEG "\033(0\017" /* use graphic chars */
|
|
#define VT_END "\033(B" /* back to normal char set */
|
|
#define VT_V "x" /* see UTF definitions above */
|
|
#define VT_VR "t"
|
|
#define VT_H "q"
|
|
#define VT_UR "m"
|
|
#define VT_HD "w"
|
|
|
|
static struct {
|
|
const char *empty_2; /* */
|
|
const char *branch_2; /* |- */
|
|
const char *vert_2; /* | */
|
|
const char *last_2; /* `- */
|
|
const char *single_3; /* --- */
|
|
const char *first_3; /* -+- */
|
|
}
|
|
_tsym_ascii = {
|
|
" ",
|
|
"|-",
|
|
"| ",
|
|
"`-",
|
|
"---",
|
|
"-+-"
|
|
},
|
|
_tsym_utf = {
|
|
" ",
|
|
UTF_VR UTF_H,
|
|
UTF_V " ",
|
|
UTF_UR UTF_H,
|
|
UTF_H UTF_H UTF_H,
|
|
UTF_H UTF_HD UTF_H
|
|
},
|
|
_tsym_vt100 = {
|
|
" ",
|
|
VT_BEG VT_VR VT_H VT_END,
|
|
VT_BEG VT_V VT_END " ",
|
|
VT_BEG VT_UR VT_H VT_END,
|
|
VT_BEG VT_H VT_H VT_H VT_END,
|
|
VT_BEG VT_H VT_HD VT_H VT_END
|
|
},
|
|
*_tsym = &_tsym_ascii;
|
|
|
|
/*
|
|
* Tree drawing functions.
|
|
*/
|
|
/* FIXME Get rid of these statics - use dynamic struct */
|
|
/* FIXME Explain what these vars are for */
|
|
static int _tree_width[MAX_DEPTH], _tree_more[MAX_DEPTH];
|
|
static int _termwidth = 80; /* Maximum output width */
|
|
static int _cur_x = 1; /* Current horizontal output position */
|
|
static char _last_char = 0;
|
|
|
|
static void _out_char(const unsigned c)
|
|
{
|
|
/* Only first UTF-8 char counts */
|
|
_cur_x += ((c & 0xc0) != 0x80);
|
|
|
|
if (!_tree_switches[TR_TRUNCATE]) {
|
|
putchar((int) c);
|
|
return;
|
|
}
|
|
|
|
/* Truncation? */
|
|
if (_cur_x <= _termwidth)
|
|
putchar((int) c);
|
|
|
|
if (_cur_x == _termwidth + 1 && ((c & 0xc0) != 0x80)) {
|
|
if (_last_char || (c & 0x80)) {
|
|
putchar('.');
|
|
putchar('.');
|
|
putchar('.');
|
|
} else {
|
|
_last_char = c;
|
|
_cur_x--;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void _out_string(const unsigned char *str)
|
|
{
|
|
while (*str)
|
|
_out_char(*str++);
|
|
}
|
|
|
|
/* non-negative integers only */
|
|
static unsigned _out_int(unsigned num)
|
|
{
|
|
unsigned digits = 0;
|
|
unsigned divi;
|
|
|
|
if (!num) {
|
|
_out_char('0');
|
|
return 1;
|
|
}
|
|
|
|
/* non zero case */
|
|
for (divi = 1; num / divi; divi *= 10)
|
|
digits++;
|
|
|
|
for (divi /= 10; divi; divi /= 10)
|
|
_out_char('0' + (num / divi) % 10);
|
|
|
|
return digits;
|
|
}
|
|
|
|
static void _out_newline(void)
|
|
{
|
|
if (_last_char && _cur_x == _termwidth)
|
|
putchar(_last_char);
|
|
_last_char = 0;
|
|
putchar('\n');
|
|
_cur_x = 1;
|
|
}
|
|
|
|
static void _out_prefix(unsigned depth)
|
|
{
|
|
unsigned x, d;
|
|
|
|
for (d = 0; d < depth; d++) {
|
|
for (x = _tree_width[d] + 1; x > 0; x--)
|
|
_out_char(' ');
|
|
|
|
_out_string(d == depth - 1 ?
|
|
!_tree_more[depth] ? _tsym->last_2 : _tsym->branch_2
|
|
: _tree_more[d + 1] ?
|
|
_tsym->vert_2 : _tsym->empty_2);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Display tree
|
|
*/
|
|
static void _display_tree_attributes(struct dm_tree_node *node)
|
|
{
|
|
int attr = 0;
|
|
const char *uuid;
|
|
const struct dm_info *info;
|
|
|
|
uuid = dm_tree_node_get_uuid(node);
|
|
info = dm_tree_node_get_info(node);
|
|
|
|
if (!info->exists)
|
|
return;
|
|
|
|
if (_tree_switches[TR_ACTIVE]) {
|
|
_out_string(attr++ ? ", " : " [");
|
|
_out_string(info->suspended ? "SUSPENDED" : "ACTIVE");
|
|
}
|
|
|
|
if (_tree_switches[TR_RW]) {
|
|
_out_string(attr++ ? ", " : " [");
|
|
_out_string(info->read_only ? "RO" : "RW");
|
|
}
|
|
|
|
if (_tree_switches[TR_OPENCOUNT]) {
|
|
_out_string(attr++ ? ", " : " [");
|
|
(void) _out_int((unsigned) info->open_count);
|
|
}
|
|
|
|
if (_tree_switches[TR_UUID]) {
|
|
_out_string(attr++ ? ", " : " [");
|
|
_out_string(uuid && *uuid ? uuid : "");
|
|
}
|
|
|
|
if (attr)
|
|
_out_char(']');
|
|
}
|
|
|
|
static void _display_tree_node(struct dm_tree_node *node, unsigned depth,
|
|
unsigned first_child __attribute((unused)),
|
|
unsigned last_child, unsigned has_children)
|
|
{
|
|
int offset;
|
|
const char *name;
|
|
const struct dm_info *info;
|
|
int first_on_line = 0;
|
|
|
|
/* Sub-tree for targets has 2 more depth */
|
|
if (depth + 2 > MAX_DEPTH)
|
|
return;
|
|
|
|
name = dm_tree_node_get_name(node);
|
|
|
|
if ((!name || !*name) && !_tree_switches[TR_DEVICE])
|
|
return;
|
|
|
|
/* Indicate whether there are more nodes at this depth */
|
|
_tree_more[depth] = !last_child;
|
|
_tree_width[depth] = 0;
|
|
|
|
if (_cur_x == 1)
|
|
first_on_line = 1;
|
|
|
|
if (!TR_PRINT_COMPACT || first_on_line)
|
|
_out_prefix(depth);
|
|
|
|
/* Remember the starting point for compact */
|
|
offset = _cur_x;
|
|
|
|
if (TR_PRINT_COMPACT && !first_on_line)
|
|
_out_string(_tree_more[depth] ? _tsym->first_3 : _tsym->single_3);
|
|
|
|
/* display node */
|
|
if (name)
|
|
_out_string(name);
|
|
|
|
info = dm_tree_node_get_info(node);
|
|
|
|
if (_tree_switches[TR_DEVICE]) {
|
|
_out_string(name ? " (" : "(");
|
|
(void) _out_int(info->major);
|
|
_out_char(':');
|
|
(void) _out_int(info->minor);
|
|
_out_char(')');
|
|
}
|
|
|
|
/* display additional info */
|
|
if (TR_PRINT_ATTRIBUTE)
|
|
_display_tree_attributes(node);
|
|
|
|
if (TR_PRINT_COMPACT)
|
|
_tree_width[depth] = _cur_x - offset;
|
|
|
|
if (!TR_PRINT_COMPACT || !has_children)
|
|
_out_newline();
|
|
|
|
if (TR_PRINT_TARGETS) {
|
|
_tree_more[depth + 1] = has_children;
|
|
// FIXME _display_tree_targets(name, depth + 2);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Walk the dependency tree
|
|
*/
|
|
static void _tree_walk_children(struct dm_tree_node *node, unsigned depth)
|
|
{
|
|
struct dm_tree_node *child, *next_child;
|
|
void *handle = NULL;
|
|
uint32_t inverted = _tree_switches[TR_BOTTOMUP];
|
|
unsigned first_child = 1;
|
|
unsigned has_children;
|
|
|
|
next_child = dm_tree_next_child(&handle, node, inverted);
|
|
|
|
while ((child = next_child)) {
|
|
next_child = dm_tree_next_child(&handle, node, inverted);
|
|
has_children =
|
|
dm_tree_node_num_children(child, inverted) ? 1 : 0;
|
|
|
|
_display_tree_node(child, depth, first_child,
|
|
next_child ? 0U : 1U, has_children);
|
|
|
|
if (has_children)
|
|
_tree_walk_children(child, depth + 1);
|
|
|
|
first_child = 0;
|
|
}
|
|
}
|
|
|
|
static int _add_dep(int argc __attribute((unused)), char **argv __attribute((unused)), void *data)
|
|
{
|
|
struct dm_names *names = (struct dm_names *) data;
|
|
|
|
if (!dm_tree_add_dev(_dtree, (unsigned) MAJOR(names->dev), (unsigned) MINOR(names->dev)))
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Create and walk dependency tree
|
|
*/
|
|
static int _tree(int argc, char **argv, void *data __attribute((unused)))
|
|
{
|
|
if (!(_dtree = dm_tree_create()))
|
|
return 0;
|
|
|
|
if (!_process_all(argc, argv, 0, _add_dep))
|
|
return 0;
|
|
|
|
_tree_walk_children(dm_tree_find_node(_dtree, 0, 0), 0);
|
|
|
|
dm_tree_free(_dtree);
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* List devices
|
|
*/
|
|
static int _ls(int argc, char **argv, void *data)
|
|
{
|
|
if ((_switches[TARGET_ARG] && _target) ||
|
|
(_switches[EXEC_ARG] && _command))
|
|
return _status(argc, argv, data);
|
|
else if ((_switches[TREE_ARG]))
|
|
return _tree(argc, argv, data);
|
|
else
|
|
return _process_all(argc, argv, 0, _display_name);
|
|
}
|
|
|
|
/*
|
|
* dispatch table
|
|
*/
|
|
typedef int (*command_fn) (int argc, char **argv, void *data);
|
|
|
|
struct command {
|
|
const char *name;
|
|
const char *help;
|
|
int min_args;
|
|
int max_args;
|
|
command_fn fn;
|
|
};
|
|
|
|
static struct command _commands[] = {
|
|
{"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"
|
|
"\t [--notable | --table <table> | <table_file>]",
|
|
1, 2, _create},
|
|
{"remove", "[-f|--force] <device>", 0, 1, _remove},
|
|
{"remove_all", "[-f|--force]", 0, 0, _remove_all},
|
|
{"suspend", "[--noflush] <device>", 0, 1, _suspend},
|
|
{"resume", "<device>", 0, 1, _resume},
|
|
{"load", "<device> [<table_file>]", 0, 2, _load},
|
|
{"clear", "<device>", 0, 1, _clear},
|
|
{"reload", "<device> [<table_file>]", 0, 2, _load},
|
|
{"rename", "<device> <new_name>", 1, 2, _rename},
|
|
{"message", "<device> <sector> <message>", 2, -1, _message},
|
|
{"ls", "[--target <target_type>] [--exec <command>] [--tree [-o options]]", 0, 0, _ls},
|
|
{"info", "[<device>]", 0, 1, _info},
|
|
{"deps", "[<device>]", 0, 1, _deps},
|
|
{"status", "[<device>] [--target <target_type>]", 0, 1, _status},
|
|
{"table", "[<device>] [--target <target_type>] [--showkeys]", 0, 1, _status},
|
|
{"wait", "<device> [<event_nr>]", 0, 2, _wait},
|
|
{"mknodes", "[<device>]", 0, 1, _mknodes},
|
|
{"targets", "", 0, 0, _targets},
|
|
{"version", "", 0, 0, _version},
|
|
{"setgeometry", "<device> <cyl> <head> <sect> <start>", 5, 5, _setgeometry},
|
|
{NULL, NULL, 0, 0, NULL}
|
|
};
|
|
|
|
static void _usage(FILE *out)
|
|
{
|
|
int i;
|
|
|
|
fprintf(out, "Usage:\n\n");
|
|
fprintf(out, "dmsetup [--version] [-v|--verbose [-v|--verbose ...]]\n"
|
|
" [-r|--readonly] [--noopencount] [--nolockfs]\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, "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");
|
|
return;
|
|
}
|
|
|
|
static void _losetup_usage(FILE *out)
|
|
{
|
|
fprintf(out, "Usage:\n\n");
|
|
fprintf(out, "losetup [-d|-a] [-e encryption] "
|
|
"[-o offset] [-f|loop_device] [file]\n\n");
|
|
}
|
|
|
|
static struct command *_find_command(const char *name)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; _commands[i].name; i++)
|
|
if (!strcmp(_commands[i].name, name))
|
|
return _commands + i;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static int _process_tree_options(const char *options)
|
|
{
|
|
const char *s, *end;
|
|
struct winsize winsz;
|
|
int len;
|
|
|
|
/* Symbol set default */
|
|
if (!strcmp(nl_langinfo(CODESET), "UTF-8"))
|
|
_tsym = &_tsym_utf;
|
|
else
|
|
_tsym = &_tsym_ascii;
|
|
|
|
/* Default */
|
|
_tree_switches[TR_DEVICE] = 1;
|
|
_tree_switches[TR_TRUNCATE] = 1;
|
|
|
|
/* parse */
|
|
for (s = options; s && *s; s++) {
|
|
len = 0;
|
|
for (end = s; *end && *end != ','; end++, len++)
|
|
;
|
|
if (!strncmp(s, "device", len))
|
|
_tree_switches[TR_DEVICE] = 1;
|
|
else if (!strncmp(s, "nodevice", len))
|
|
_tree_switches[TR_DEVICE] = 0;
|
|
else if (!strncmp(s, "status", len))
|
|
_tree_switches[TR_STATUS] = 1;
|
|
else if (!strncmp(s, "table", len))
|
|
_tree_switches[TR_TABLE] = 1;
|
|
else if (!strncmp(s, "active", len))
|
|
_tree_switches[TR_ACTIVE] = 1;
|
|
else if (!strncmp(s, "open", len))
|
|
_tree_switches[TR_OPENCOUNT] = 1;
|
|
else if (!strncmp(s, "uuid", len))
|
|
_tree_switches[TR_UUID] = 1;
|
|
else if (!strncmp(s, "rw", len))
|
|
_tree_switches[TR_RW] = 1;
|
|
else if (!strncmp(s, "utf", len))
|
|
_tsym = &_tsym_utf;
|
|
else if (!strncmp(s, "vt100", len))
|
|
_tsym = &_tsym_vt100;
|
|
else if (!strncmp(s, "ascii", len))
|
|
_tsym = &_tsym_ascii;
|
|
else if (!strncmp(s, "inverted", len))
|
|
_tree_switches[TR_BOTTOMUP] = 1;
|
|
else if (!strncmp(s, "compact", len))
|
|
_tree_switches[TR_COMPACT] = 1;
|
|
else if (!strncmp(s, "notrunc", len))
|
|
_tree_switches[TR_TRUNCATE] = 0;
|
|
else {
|
|
fprintf(stderr, "Tree options not recognised: %s\n", s);
|
|
return 0;
|
|
}
|
|
if (!*end)
|
|
break;
|
|
s = end;
|
|
}
|
|
|
|
/* Truncation doesn't work well with vt100 drawing char */
|
|
if (_tsym != &_tsym_vt100)
|
|
if (ioctl(1, TIOCGWINSZ, &winsz) >= 0 && winsz.ws_col > 3)
|
|
_termwidth = winsz.ws_col - 3;
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Returns the full absolute path, or NULL if the path could
|
|
* not be resolved.
|
|
*/
|
|
static char *_get_abspath(char *path)
|
|
{
|
|
char *_path;
|
|
|
|
#ifdef HAVE_CANONICALIZE_FILE_NAME
|
|
_path = canonicalize_file_name(path);
|
|
#else
|
|
/* FIXME Provide alternative */
|
|
#endif
|
|
return _path;
|
|
}
|
|
|
|
static char *parse_loop_device_name(char *dev)
|
|
{
|
|
char *buf;
|
|
char *device;
|
|
|
|
if (!(buf = dm_malloc(PATH_MAX)));
|
|
return NULL;
|
|
|
|
if (dev[0] == '/') {
|
|
if (!(device = _get_abspath(dev)))
|
|
goto error;
|
|
|
|
if (strncmp(device, DEV_PATH, strlen(DEV_PATH)))
|
|
goto error;
|
|
|
|
strncpy(buf, strrchr(device, '/') + 1, PATH_MAX);
|
|
dm_free(device);
|
|
|
|
} else {
|
|
/* check for device number */
|
|
if (!strncmp(dev, "loop", strlen("loop")))
|
|
strncpy(buf, dev, PATH_MAX);
|
|
else
|
|
goto error;
|
|
}
|
|
|
|
return buf;
|
|
|
|
error:
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* create a table for a mapped device using the loop target.
|
|
*/
|
|
static int _loop_table(char *table, size_t tlen, char *file, char *dev, off_t off)
|
|
{
|
|
struct stat fbuf;
|
|
off_t size, sectors;
|
|
int fd = -1;
|
|
#ifdef HAVE_SYS_STATVFS_H
|
|
struct statvfs fsbuf;
|
|
off_t blksize;
|
|
#endif
|
|
|
|
if (!_switches[READ_ONLY])
|
|
fd = open(file, O_RDWR);
|
|
|
|
if (fd < 0) {
|
|
_switches[READ_ONLY]++;
|
|
fd = open(file, O_RDONLY);
|
|
}
|
|
|
|
if (fd < 0)
|
|
goto error;
|
|
|
|
if (fstat(fd, &fbuf))
|
|
goto error;
|
|
|
|
size = (fbuf.st_size - off);
|
|
sectors = size >> SECTOR_SHIFT;
|
|
|
|
if (_switches[VERBOSE_ARG])
|
|
fprintf(stderr, "losetup: set loop size to %llukB (%llu sectors)\n",
|
|
sectors >> 1, sectors);
|
|
|
|
#ifdef HAVE_SYS_STATVFS_H
|
|
if (fstatvfs(fd, &fsbuf))
|
|
goto error;
|
|
|
|
/* FIXME Fragment size currently unused */
|
|
blksize = fsbuf.f_frsize;
|
|
#endif
|
|
|
|
close(fd);
|
|
|
|
if (dm_snprintf(table, tlen, "%llu %llu loop %s %llu\n", 0ULL,
|
|
(long long unsigned)sectors, file, off) < 0)
|
|
return 0;
|
|
|
|
if (_switches[VERBOSE_ARG] > 1)
|
|
fprintf(stderr, "Table: %s\n", table);
|
|
|
|
return 1;
|
|
|
|
error:
|
|
if (fd > -1)
|
|
close(fd);
|
|
return 0;
|
|
}
|
|
|
|
static int _process_losetup_switches(const char *base, int *argc, char ***argv)
|
|
{
|
|
static int ind;
|
|
int c;
|
|
int encrypt_loop = 0, delete = 0, find = 0, show_all = 0;
|
|
char *device_name = NULL;
|
|
char *loop_file = NULL;
|
|
off_t offset = 0;
|
|
|
|
#ifdef HAVE_GETOPTLONG
|
|
static struct option long_options[] = {
|
|
{0, 0, 0, 0}
|
|
};
|
|
#endif
|
|
|
|
optarg = 0;
|
|
optind = OPTIND_INIT;
|
|
while ((ind = -1, c = GETOPTLONG_FN(*argc, *argv, "ade:fo:v",
|
|
long_options, NULL)) != -1 ) {
|
|
if (c == ':' || c == '?')
|
|
return 0;
|
|
if (c == 'a')
|
|
show_all++;
|
|
if (c == 'd')
|
|
delete++;
|
|
if (c == 'e')
|
|
encrypt_loop++;
|
|
if (c == 'f')
|
|
find++;
|
|
if (c == 'o')
|
|
offset = atoi(optarg);
|
|
if (c == 'v')
|
|
_switches[VERBOSE_ARG]++;
|
|
}
|
|
|
|
*argv += optind ;
|
|
*argc -= optind ;
|
|
|
|
if (encrypt_loop){
|
|
fprintf(stderr, "%s: Sorry, cryptoloop is not yet implemented "
|
|
"in this version.\n", base);
|
|
return 0;
|
|
}
|
|
|
|
if (show_all) {
|
|
fprintf(stderr, "%s: Sorry, show all is not yet implemented "
|
|
"in this version.\n", base);
|
|
return 0;
|
|
}
|
|
|
|
if (find) {
|
|
fprintf(stderr, "%s: Sorry, find is not yet implemented "
|
|
"in this version.\n", base);
|
|
if (!*argc)
|
|
return 0;
|
|
}
|
|
|
|
if (!*argc) {
|
|
fprintf(stderr, "%s: Please specify loop_device.\n", base);
|
|
_losetup_usage(stderr);
|
|
return 0;
|
|
}
|
|
|
|
if (!(device_name = parse_loop_device_name((*argv)[0]))) {
|
|
fprintf(stderr, "%s: Could not parse loop_device %s\n",
|
|
base, (*argv)[0]);
|
|
_losetup_usage(stderr);
|
|
return 0;
|
|
}
|
|
|
|
if (delete) {
|
|
*argc = 2;
|
|
|
|
(*argv)[1] = device_name;
|
|
(*argv)[0] = (char *) "remove";
|
|
|
|
return 1;
|
|
}
|
|
|
|
if (*argc != 2) {
|
|
fprintf(stderr, "%s: Too few arguments\n", base);
|
|
_losetup_usage(stderr);
|
|
return 0;
|
|
}
|
|
|
|
/* FIXME move these to make them available to native dmsetup */
|
|
if (!(loop_file = _get_abspath((*argv)[(find) ? 0 : 1]))) {
|
|
fprintf(stderr, "%s: Could not parse loop file name %s\n",
|
|
base, (*argv)[1]);
|
|
_losetup_usage(stderr);
|
|
return 0;
|
|
}
|
|
|
|
/* FIXME Missing free */
|
|
_table = dm_malloc(LOOP_TABLE_SIZE);
|
|
if (!_loop_table(_table, LOOP_TABLE_SIZE, loop_file, device_name, offset)) {
|
|
fprintf(stderr, "Could not build device-mapper table for %s\n", (*argv)[0]);
|
|
return 0;
|
|
}
|
|
_switches[TABLE_ARG]++;
|
|
|
|
(*argv)[0] = (char *) "create";
|
|
(*argv)[1] = device_name ;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int _process_switches(int *argc, char ***argv)
|
|
{
|
|
char *base, *namebase;
|
|
static int ind;
|
|
int c, r;
|
|
|
|
#ifdef HAVE_GETOPTLONG
|
|
static struct option long_options[] = {
|
|
{"readonly", 0, &ind, READ_ONLY},
|
|
{"columns", 0, &ind, COLS_ARG},
|
|
{"exec", 1, &ind, EXEC_ARG},
|
|
{"force", 0, &ind, FORCE_ARG},
|
|
{"gid", 1, &ind, GID_ARG},
|
|
{"major", 1, &ind, MAJOR_ARG},
|
|
{"minor", 1, &ind, MINOR_ARG},
|
|
{"mode", 1, &ind, MODE_ARG},
|
|
{"noflush", 0, &ind, NOFLUSH_ARG},
|
|
{"noheadings", 0, &ind, NOHEADINGS_ARG},
|
|
{"nolockfs", 0, &ind, NOLOCKFS_ARG},
|
|
{"noopencount", 0, &ind, NOOPENCOUNT_ARG},
|
|
{"notable", 0, &ind, NOTABLE_ARG},
|
|
{"options", 1, &ind, OPTIONS_ARG},
|
|
{"showkeys", 0, &ind, SHOWKEYS_ARG},
|
|
{"table", 1, &ind, TABLE_ARG},
|
|
{"target", 1, &ind, TARGET_ARG},
|
|
{"tree", 0, &ind, TREE_ARG},
|
|
{"uid", 1, &ind, UID_ARG},
|
|
{"uuid", 1, &ind, UUID_ARG},
|
|
{"verbose", 1, &ind, VERBOSE_ARG},
|
|
{"version", 0, &ind, VERSION_ARG},
|
|
{0, 0, 0, 0}
|
|
};
|
|
#else
|
|
struct option long_options;
|
|
#endif
|
|
|
|
/*
|
|
* Zero all the index counts.
|
|
*/
|
|
memset(&_switches, 0, sizeof(_switches));
|
|
memset(&_values, 0, sizeof(_values));
|
|
|
|
namebase = strdup((*argv)[0]);
|
|
base = basename(namebase);
|
|
|
|
if (!strcmp(base, "devmap_name")) {
|
|
free(namebase);
|
|
_switches[COLS_ARG]++;
|
|
_switches[NOHEADINGS_ARG]++;
|
|
_switches[OPTIONS_ARG]++;
|
|
_switches[MAJOR_ARG]++;
|
|
_switches[MINOR_ARG]++;
|
|
_fields = (char *) "name";
|
|
|
|
if (*argc == 3) {
|
|
_values[MAJOR_ARG] = atoi((*argv)[1]);
|
|
_values[MINOR_ARG] = atoi((*argv)[2]);
|
|
*argc -= 2;
|
|
*argv += 2;
|
|
} else if ((*argc == 2) &&
|
|
(2 == sscanf((*argv)[1], "%i:%i",
|
|
&_values[MAJOR_ARG],
|
|
&_values[MINOR_ARG]))) {
|
|
*argc -= 1;
|
|
*argv += 1;
|
|
} else {
|
|
fprintf(stderr, "Usage: devmap_name <major> <minor>\n");
|
|
return 0;
|
|
}
|
|
|
|
(*argv)[0] = (char *) "info";
|
|
return 1;
|
|
}
|
|
|
|
if(!strcmp(base, "losetup") || !strcmp(base, "dmlosetup")){
|
|
r = _process_losetup_switches(base, argc, argv);
|
|
free(namebase);
|
|
return r;
|
|
}
|
|
|
|
free(namebase);
|
|
|
|
optarg = 0;
|
|
optind = OPTIND_INIT;
|
|
while ((ind = -1, c = GETOPTLONG_FN(*argc, *argv, "cCfGj:m:Mno:ru:Uv",
|
|
long_options, NULL)) != -1) {
|
|
if (c == ':' || c == '?')
|
|
return 0;
|
|
if (c == 'c' || c == 'C' || ind == COLS_ARG)
|
|
_switches[COLS_ARG]++;
|
|
if (c == 'f' || ind == FORCE_ARG)
|
|
_switches[FORCE_ARG]++;
|
|
if (c == 'r' || ind == READ_ONLY)
|
|
_switches[READ_ONLY]++;
|
|
if (c == 'j' || ind == MAJOR_ARG) {
|
|
_switches[MAJOR_ARG]++;
|
|
_values[MAJOR_ARG] = atoi(optarg);
|
|
}
|
|
if (c == 'm' || ind == MINOR_ARG) {
|
|
_switches[MINOR_ARG]++;
|
|
_values[MINOR_ARG] = atoi(optarg);
|
|
}
|
|
if (c == 'n' || ind == NOTABLE_ARG)
|
|
_switches[NOTABLE_ARG]++;
|
|
if (c == 'o' || ind == OPTIONS_ARG) {
|
|
_switches[OPTIONS_ARG]++;
|
|
_fields = optarg;
|
|
}
|
|
if (c == 'v' || ind == VERBOSE_ARG)
|
|
_switches[VERBOSE_ARG]++;
|
|
if (c == 'u' || ind == UUID_ARG) {
|
|
_switches[UUID_ARG]++;
|
|
_uuid = optarg;
|
|
}
|
|
if (c == 'G' || ind == GID_ARG) {
|
|
_switches[GID_ARG]++;
|
|
_values[GID_ARG] = atoi(optarg);
|
|
}
|
|
if (c == 'U' || ind == UID_ARG) {
|
|
_switches[UID_ARG]++;
|
|
_values[UID_ARG] = atoi(optarg);
|
|
}
|
|
if (c == 'M' || ind == MODE_ARG) {
|
|
_switches[MODE_ARG]++;
|
|
/* FIXME Accept modes as per chmod */
|
|
_values[MODE_ARG] = (int) strtol(optarg, NULL, 8);
|
|
}
|
|
if ((ind == EXEC_ARG)) {
|
|
_switches[EXEC_ARG]++;
|
|
_command = optarg;
|
|
}
|
|
if ((ind == TARGET_ARG)) {
|
|
_switches[TARGET_ARG]++;
|
|
_target = optarg;
|
|
}
|
|
if ((ind == NOFLUSH_ARG))
|
|
_switches[NOFLUSH_ARG]++;
|
|
if ((ind == NOHEADINGS_ARG))
|
|
_switches[NOHEADINGS_ARG]++;
|
|
if ((ind == NOLOCKFS_ARG))
|
|
_switches[NOLOCKFS_ARG]++;
|
|
if ((ind == NOOPENCOUNT_ARG))
|
|
_switches[NOOPENCOUNT_ARG]++;
|
|
if ((ind == SHOWKEYS_ARG))
|
|
_switches[SHOWKEYS_ARG]++;
|
|
if ((ind == TABLE_ARG)) {
|
|
_switches[TABLE_ARG]++;
|
|
_table = optarg;
|
|
}
|
|
if ((ind == TREE_ARG))
|
|
_switches[TREE_ARG]++;
|
|
if ((ind == VERSION_ARG))
|
|
_switches[VERSION_ARG]++;
|
|
}
|
|
|
|
if (_switches[VERBOSE_ARG] > 1)
|
|
dm_log_init_verbose(_switches[VERBOSE_ARG] - 1);
|
|
|
|
if ((_switches[MAJOR_ARG] && !_switches[MINOR_ARG]) ||
|
|
(!_switches[MAJOR_ARG] && _switches[MINOR_ARG])) {
|
|
fprintf(stderr, "Please specify both major number and "
|
|
"minor number.\n");
|
|
return 0;
|
|
}
|
|
|
|
if (_switches[COLS_ARG] && _switches[OPTIONS_ARG] &&
|
|
strcmp(_fields, "name")) {
|
|
fprintf(stderr, "Only -o name is supported so far.\n");
|
|
return 0;
|
|
}
|
|
|
|
if (_switches[TREE_ARG] && !_process_tree_options(_fields))
|
|
return 0;
|
|
|
|
if (_switches[TABLE_ARG] && _switches[NOTABLE_ARG]) {
|
|
fprintf(stderr, "--table and --notable are incompatible.\n");
|
|
return 0;
|
|
}
|
|
|
|
*argv += optind;
|
|
*argc -= optind;
|
|
return 1;
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
struct command *c;
|
|
int r = 1;
|
|
|
|
(void) setlocale(LC_ALL, "");
|
|
|
|
if (!_process_switches(&argc, &argv)) {
|
|
fprintf(stderr, "Couldn't process command line.\n");
|
|
goto out;
|
|
}
|
|
|
|
if (_switches[VERSION_ARG]) {
|
|
c = _find_command("version");
|
|
goto doit;
|
|
}
|
|
|
|
if (argc == 0) {
|
|
_usage(stderr);
|
|
goto out;
|
|
}
|
|
|
|
if (!(c = _find_command(argv[0]))) {
|
|
fprintf(stderr, "Unknown command\n");
|
|
_usage(stderr);
|
|
goto out;
|
|
}
|
|
|
|
if (argc < c->min_args + 1 ||
|
|
(c->max_args >= 0 && argc > c->max_args + 1)) {
|
|
fprintf(stderr, "Incorrect number of arguments\n");
|
|
_usage(stderr);
|
|
goto out;
|
|
}
|
|
|
|
doit:
|
|
if (!c->fn(argc, argv, NULL)) {
|
|
fprintf(stderr, "Command failed\n");
|
|
goto out;
|
|
}
|
|
|
|
r = 0;
|
|
|
|
out:
|
|
return r;
|
|
}
|