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bfe7721d50
These all existed before virfile.c was created, and for some reason weren't moved. This is mostly straightfoward, although the syntax rule prohibiting write() had to be changed to have an exception for virfile.c instead of virutil.c. This movement pointed out that there is a function called virBuildPath(), and another almost identical function called virFileBuildPath(). They really should be a single function, which I'll take care of as soon as I figure out what the arglist should look like.
179 lines
5.7 KiB
C
179 lines
5.7 KiB
C
/*
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* parthelper.c: Helper program to talk to parted with.
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*
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* This helper exists because parted is GPLv3+, while libvirt is LGPLv2+.
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* Thus we can't link to parted in libvirt.so without the combined work
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* being GPLv3+. Thus we separate via an external command. NB, this source
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* code is still LGPLv2+, but the binary helper is effectively GPLv3+
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*
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* The existing 'parted' command line tool is also incredibly hard to parse
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* in a reliable fashion if merely after a list of partitions & sizes,
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* though it is fine for creating partitions.
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*
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* Copyright (C) 2007-2008, 2010, 2013 Red Hat, Inc.
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* Copyright (C) 2007-2008 Daniel P. Berrange
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*
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* Author: Daniel P. Berrange <berrange@redhat.com>
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*/
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#include <config.h>
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#include <parted/parted.h>
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#include <stdio.h>
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#include <string.h>
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#include <libdevmapper.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <locale.h>
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#include "virutil.h"
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#include "virfile.h"
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#include "c-ctype.h"
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#include "configmake.h"
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#include "virstring.h"
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/* we don't need to include the full internal.h just for this */
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#define STREQ(a,b) (strcmp(a,b) == 0)
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/* Make the comparisons below fail if your parted headers
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are so old that they lack the definition. */
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#ifndef PED_PARTITION_PROTECTED
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# define PED_PARTITION_PROTECTED 0
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#endif
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enum diskCommand {
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DISK_LAYOUT = 0,
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DISK_GEOMETRY
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};
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int main(int argc, char **argv)
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{
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PedDevice *dev;
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PedDisk *disk;
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PedPartition *part;
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int cmd = DISK_LAYOUT;
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const char *path;
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char *canonical_path;
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const char *partsep;
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if (setlocale(LC_ALL, "") == NULL ||
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bindtextdomain(PACKAGE, LOCALEDIR) == NULL ||
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textdomain(PACKAGE) == NULL) {
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fprintf(stderr, _("%s: initialization failed\n"), argv[0]);
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exit(EXIT_FAILURE);
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}
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if (argc == 3 && STREQ(argv[2], "-g")) {
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cmd = DISK_GEOMETRY;
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} else if (argc != 2) {
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fprintf(stderr, _("syntax: %s DEVICE [-g]\n"), argv[0]);
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return 1;
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}
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path = argv[1];
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if (virIsDevMapperDevice(path)) {
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partsep = "p";
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if (VIR_STRDUP_QUIET(canonical_path, path) < 0)
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return 2;
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} else {
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if (virFileResolveLink(path, &canonical_path) != 0) {
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return 2;
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}
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partsep = *canonical_path &&
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c_isdigit(canonical_path[strlen(canonical_path)-1]) ? "p" : "";
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}
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if ((dev = ped_device_get(path)) == NULL) {
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fprintf(stderr, _("unable to access device %s\n"), path);
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return 2;
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}
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/* return the geometry of the disk and then exit */
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if (cmd == DISK_GEOMETRY) {
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printf("%d%c%d%c%d%c",
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dev->hw_geom.cylinders, '\0',
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dev->hw_geom.heads, '\0',
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dev->hw_geom.sectors, '\0');
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return 0;
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}
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if ((disk = ped_disk_new(dev)) == NULL) {
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fprintf(stderr, _("unable to access disk %s\n"), argv[1]);
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return 2;
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}
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/* Get the first partition, and then iterate over all */
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part = ped_disk_next_partition(disk, NULL);
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while (part) {
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const char *type;
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const char *content;
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if (part->type & PED_PARTITION_LOGICAL) {
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type = "logical";
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if (part->type & PED_PARTITION_FREESPACE)
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content = "free";
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else if (part->type & PED_PARTITION_METADATA)
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content = "metadata";
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/* coverity[dead_error_condition] - not true if defined */
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else if (part->type & PED_PARTITION_PROTECTED)
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content = "protected";
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else
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content = "data";
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} else if (part->type == PED_PARTITION_EXTENDED) {
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type = "extended";
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content = "metadata";
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} else {
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type = "normal";
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if (part->type & PED_PARTITION_FREESPACE)
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content = "free";
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else if (part->type & PED_PARTITION_METADATA)
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content = "metadata";
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/* coverity[dead_error_condition] - not true if defined */
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else if (part->type & PED_PARTITION_PROTECTED)
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content = "protected";
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else
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content = "data";
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}
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/* We do +1 on geom.end, because we want end of the last sector
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* in bytes, not the last sector number
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*/
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if (part->num != -1) {
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printf("%s%s%d%c%s%c%s%c%llu%c%llu%c%llu%c",
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canonical_path, partsep,
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part->num, '\0',
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type, '\0',
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content, '\0',
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part->geom.start * dev->sector_size, '\0',
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(part->geom.end + 1) * dev->sector_size, '\0',
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part->geom.length * dev->sector_size, '\0');
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} else {
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printf("%s%c%s%c%s%c%llu%c%llu%c%llu%c",
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"-", '\0',
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type, '\0',
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content, '\0',
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part->geom.start * dev->sector_size, '\0',
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(part->geom.end + 1) * dev->sector_size, '\0',
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part->geom.length * dev->sector_size, '\0');
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}
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part = ped_disk_next_partition(disk, part);
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}
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return 0;
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}
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