| #ifndef UTIL_LINUX_PARTX_H |
| #define UTIL_LINUX_PARTX_H |
| |
| #include <sys/ioctl.h> |
| #include <linux/blkpg.h> |
| #include <stdint.h> |
| |
| #ifndef BLKPG_ADD_PARTITION |
| # define BLKPG_ADD_PARTITION 1 |
| #endif |
| |
| #ifndef BLKPG_DEL_PARTITION |
| # define BLKPG_DEL_PARTITION 2 |
| #endif |
| |
| #ifndef BLKPG_RESIZE_PARTITION |
| # define BLKPG_RESIZE_PARTITION 3 /* since Linux 3.6 */ |
| #endif |
| |
| |
| #define INIT_BLKPG_PARTITION(_partno, _start, _size) { \ |
| .pno = (_partno), \ |
| .start = (_start) << 9, \ |
| .length = (_size) << 9, \ |
| .devname[0] = 0, \ |
| .volname[0] = 0 \ |
| } |
| |
| #define INIT_BLKPG_ARG(_action, _part) { \ |
| .op = (_action), \ |
| .flags = 0, \ |
| .datalen = sizeof(*(_part)), \ |
| .data = (_part) \ |
| } |
| |
| |
| static inline int partx_del_partition(int fd, unsigned int partno) |
| { |
| struct blkpg_partition p = INIT_BLKPG_PARTITION(partno, 0, 0); |
| struct blkpg_ioctl_arg a = INIT_BLKPG_ARG(BLKPG_DEL_PARTITION, &p); |
| |
| return ioctl(fd, BLKPG, &a); |
| } |
| |
| static inline int partx_add_partition(int fd, int partno, |
| uint64_t start, uint64_t size) |
| { |
| struct blkpg_partition p = INIT_BLKPG_PARTITION(partno, start, size); |
| struct blkpg_ioctl_arg a = INIT_BLKPG_ARG(BLKPG_ADD_PARTITION, &p); |
| |
| return ioctl(fd, BLKPG, &a); |
| } |
| |
| static inline int partx_resize_partition(int fd, int partno, |
| uint64_t start, uint64_t size) |
| { |
| struct blkpg_partition p = INIT_BLKPG_PARTITION(partno, start, size); |
| struct blkpg_ioctl_arg a = INIT_BLKPG_ARG(BLKPG_RESIZE_PARTITION, &p); |
| |
| return ioctl(fd, BLKPG, &a); |
| } |
| |
| #endif /* UTIL_LINUX_PARTX_H */ |