Adding upstream version 2.36.1.upstream/2.36.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 192 insertions, 0 deletions

diff --git a/libfdisk/samples/mkpart-fullspec.c b/libfdisk/samples/mkpart-fullspec.c
new file mode 100644
index 0000000..821a688
--- /dev/null
+++ b/libfdisk/samples/mkpart-fullspec.c
@@ -0,0 +1,192 @@
+/*
+ * 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;
+}