[thirdparty/util-linux.git] / partx / addpart.c

/* very primitive wrapper around the `add partition' ioctl */
#include <stdio.h>
#include <fcntl.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#ifdef HAVE_LINUX_COMPILER_H
#include <linux/compiler.h>
#endif
#include <linux/blkpg.h>

int
main(int argc, char **argv){
	int fd;
	struct blkpg_ioctl_arg a;
	struct blkpg_partition p;

	if (argc != 5) {
		fprintf(stderr,
			"usage: %s diskdevice partitionnr start length\n",
			argv[0]);
		exit(1);
	}
	if ((fd = open(argv[1], O_RDONLY)) < 0) {
		perror(argv[1]);
		exit(1);
	}
	p.pno = atoi(argv[2]);
	p.start = 512 * atoll(argv[3]);
	p.length = 512 * atoll(argv[4]);
	p.devname[0] = 0;
	p.volname[0] = 0;
	a.op = BLKPG_ADD_PARTITION;
	a.flags = 0;
	a.datalen = sizeof(p);
	a.data = &p;

	if (ioctl(fd, BLKPG, &a) == -1) {
		perror("BLKPG");
		exit(1);
	}
	    
	return 0;
}
Commit	Line	Data
7eda085c KZ	1	/* very primitive wrapper around the `add partition' ioctl */
	2	#include <stdio.h>
	3	#include <fcntl.h>
	4	#include <stdlib.h>
	5	#include <sys/ioctl.h>
48d7b13a KZ	6	#ifdef HAVE_LINUX_COMPILER_H
	7	#include <linux/compiler.h>
	8	#endif
7eda085c KZ	9	#include <linux/blkpg.h>
	10
	11	int
	12	main(int argc, char **argv){
	13	int fd;
	14	struct blkpg_ioctl_arg a;
	15	struct blkpg_partition p;
	16
	17	if (argc != 5) {
	18	fprintf(stderr,
	19	"usage: %s diskdevice partitionnr start length\n",
	20	argv[0]);
	21	exit(1);
	22	}
	23	if ((fd = open(argv[1], O_RDONLY)) < 0) {
	24	perror(argv[1]);
	25	exit(1);
	26	}
	27	p.pno = atoi(argv[2]);
b425b18b TF	28	p.start = 512 * atoll(argv[3]);
b425b18b TF	29	p.length = 512 * atoll(argv[4]);
7eda085c KZ	30	p.devname[0] = 0;
	31	p.volname[0] = 0;
	32	a.op = BLKPG_ADD_PARTITION;
	33	a.flags = 0;
	34	a.datalen = sizeof(p);
	35	a.data = &p;
	36
	37	if (ioctl(fd, BLKPG, &a) == -1) {
	38	perror("BLKPG");
	39	exit(1);
	40	}
	41
	42	return 0;
	43	}