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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 13:14:44 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 13:14:44 +0000
commit30ff6afe596eddafacf22b1a5b2d1a3d6254ea15 (patch)
tree9b788335f92174baf7ee18f03ca8330b8c19ce2b /libfdisk/samples/mkpart-fullspec.c
parentInitial commit. (diff)
downloadutil-linux-30ff6afe596eddafacf22b1a5b2d1a3d6254ea15.tar.xz
util-linux-30ff6afe596eddafacf22b1a5b2d1a3d6254ea15.zip
Adding upstream version 2.36.1.upstream/2.36.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'libfdisk/samples/mkpart-fullspec.c')
-rw-r--r--libfdisk/samples/mkpart-fullspec.c192
1 files changed, 192 insertions, 0 deletions
diff --git a/libfdisk/samples/mkpart-fullspec.c b/libfdisk/samples/mkpart-fullspec.c
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+++ b/libfdisk/samples/mkpart-fullspec.c
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+/*
+ * Copyright (C) 2017 Karel Zak <kzak@redhat.com>
+ *
+ * This file may be redistributed under the terms of the
+ * GNU Lesser General Public License.
+ *
+ *
+ * Libfdisk sample to create partitions by specify all required partition
+ * properties (partno, start and size). The default is only partition type
+ * (except MBR where 4th partition is extended).
+ */
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <dirent.h>
+#include <getopt.h>
+
+#include "c.h"
+#include "nls.h"
+#include "strutils.h"
+#include "xalloc.h"
+
+#include "libfdisk.h"
+
+static int ask_callback(struct fdisk_context *cxt __attribute__((__unused__)),
+ struct fdisk_ask *ask,
+ void *data)
+{
+ switch(fdisk_ask_get_type(ask)) {
+ case FDISK_ASKTYPE_INFO:
+ fputs(fdisk_ask_print_get_mesg(ask), stdout);
+ fputc('\n', stdout);
+ break;
+ case FDISK_ASKTYPE_WARNX:
+ fflush(stdout);
+ fputs(fdisk_ask_print_get_mesg(ask), stderr);
+ fputc('\n', stderr);
+ break;
+ case FDISK_ASKTYPE_WARN:
+ fflush(stdout);
+ fputs(fdisk_ask_print_get_mesg(ask), stderr);
+ errno = fdisk_ask_print_get_errno(ask);
+ fprintf(stderr, ": %m\n");
+ break;
+ default:
+ break;
+ }
+ return 0;
+}
+
+int main(int argc, char *argv[])
+{
+ struct fdisk_context *cxt;
+ struct fdisk_partition *pa;
+ const char *label = NULL, *device = NULL;
+ int c;
+ size_t n = 1;
+
+ static const struct option longopts[] = {
+ { "label", required_argument, NULL, 'x' },
+ { "device", required_argument, NULL, 'd' },
+ { "help", no_argument, NULL, 'h' },
+ { NULL, 0, NULL, 0 },
+ };
+
+ setlocale(LC_ALL, ""); /* just to have enable UTF8 chars */
+
+ fdisk_init_debug(0);
+
+ while((c = getopt_long(argc, argv, "x:d:h", longopts, NULL)) != -1) {
+ switch(c) {
+ case 'x':
+ label = optarg;
+ break;
+ case 'd':
+ device = optarg;
+ break;
+ case 'h':
+ printf("%s [options] -- <partno,start,size> ...", program_invocation_short_name);
+ fputs(USAGE_SEPARATOR, stdout);
+ puts("Make disklabel and partitions.");
+ puts(" <partno> 1..n (4th is extended for MBR), or '-' for default");
+ puts(" <start> partition start offset in sectors");
+ puts(" <size> partition size in sectors");
+ fputs(USAGE_OPTIONS, stdout);
+ puts(" -x, --label <dos,gpt,...> disk label type (default MBR)");
+ puts(" -d, --device <path> block device");
+ puts(" -h, --help this help");
+ fputs(USAGE_SEPARATOR, stdout);
+ return EXIT_SUCCESS;
+ }
+ }
+
+ if (!device)
+ errx(EXIT_FAILURE, "no device specified");
+ if (!label)
+ label = "dos";
+
+ cxt = fdisk_new_context();
+ if (!cxt)
+ err_oom();
+ fdisk_set_ask(cxt, ask_callback, NULL);
+
+ pa = fdisk_new_partition();
+ if (!pa)
+ err_oom();
+
+ if (fdisk_assign_device(cxt, device, 0))
+ err(EXIT_FAILURE, "failed to assign device");
+ if (fdisk_create_disklabel(cxt, label))
+ err(EXIT_FAILURE, "failed to create disk label");
+
+ fdisk_disable_dialogs(cxt, 1);
+
+ while (optind < argc) {
+ int rc;
+ unsigned int partno = 0;
+ uint64_t start = 0, size = 0;
+ const char *str = argv[optind];
+
+ fdisk_reset_partition(pa);
+ fdisk_partition_end_follow_default(pa, 0);
+
+ if (*str == '-') {
+ /* partno unspecified */
+ if (sscanf(str, "-,%"SCNu64",%"SCNu64"", &start, &size) != 2)
+ errx(EXIT_FAILURE, "failed to parse %s", str);
+ fdisk_partition_partno_follow_default(pa, 1);
+ fdisk_partition_unset_partno(pa);
+ } else {
+ /* partno specified */
+ if (sscanf(str, "%u,%"SCNu64",%"SCNu64"", &partno, &start, &size) != 3)
+ errx(EXIT_FAILURE, "failed to parse %s", str);
+
+ fdisk_partition_partno_follow_default(pa, 0);
+ fdisk_partition_set_partno(pa, partno - 1); /* library uses 0..n */
+ }
+
+ fdisk_partition_set_start(pa, start);
+ fdisk_partition_set_size(pa, size);
+
+ if (fdisk_partition_has_partno(pa))
+ fprintf(stdout, "Requested partition: <partno=%zu,start=%ju,size=%ju>\n",
+ fdisk_partition_get_partno(pa),
+ (uintmax_t) fdisk_partition_get_start(pa),
+ (uintmax_t) fdisk_partition_get_size(pa));
+ else
+ fprintf(stdout, "Requested partition: <partno=<default>,start=%ju,size=%ju>\n",
+ (uintmax_t) fdisk_partition_get_start(pa),
+ (uintmax_t) fdisk_partition_get_size(pa));
+
+ if (fdisk_is_label(cxt, DOS)) {
+ /* Make sure last primary partition is extended if user
+ * wants more than 4 partitions.
+ */
+ if ((partno == 4 || (n == 4 && !fdisk_partition_has_partno(pa)))
+ && optind + 1 < argc) {
+ struct fdisk_parttype *type =
+ fdisk_label_parse_parttype(
+ fdisk_get_label(cxt, NULL), "05");
+ if (!type)
+ err_oom();
+ fdisk_partition_set_type(pa, type);
+ fdisk_unref_parttype(type);
+ }
+ }
+
+ rc = fdisk_add_partition(cxt, pa, NULL);
+ if (rc) {
+ errno = -rc;
+ errx(EXIT_FAILURE, "failed to add #%zu partition",
+ fdisk_partition_has_partno(pa) ?
+ fdisk_partition_get_partno(pa) + 1: n);
+ }
+
+ fdisk_reset_partition(pa);
+ optind++;
+ n++;
+ }
+
+ if (fdisk_write_disklabel(cxt))
+ err(EXIT_FAILURE, "failed to write disk label");
+
+ fdisk_deassign_device(cxt, 1);
+ fdisk_unref_context(cxt);
+ fdisk_unref_partition(pa);
+
+ return EXIT_SUCCESS;
+}