diff options
| author | Karel Zak | 2017-07-13 13:46:52 +0200 |
|---|---|---|
| committer | Karel Zak | 2017-07-14 11:34:55 +0200 |
| commit | 87d04a3339252c023bf9025c38c0ec7d3f5ee817 (patch) | |
| tree | de5bd61cc11b44980edcf90f086f5bb207c6bf79 /include | |
| parent | libfdisk: add comment (diff) | |
| download | kernel-qcow2-util-linux-87d04a3339252c023bf9025c38c0ec7d3f5ee817.tar.gz kernel-qcow2-util-linux-87d04a3339252c023bf9025c38c0ec7d3f5ee817.tar.xz kernel-qcow2-util-linux-87d04a3339252c023bf9025c38c0ec7d3f5ee817.zip | |
partx: move partx.h to include/
Let's make the ioctls usable also for libfdisk.
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/Makemodule.am | 1 | ||||
| -rw-r--r-- | include/partx.h | 62 |
2 files changed, 63 insertions, 0 deletions
diff --git a/include/Makemodule.am b/include/Makemodule.am index 7ea1a4824..237400b05 100644 --- a/include/Makemodule.am +++ b/include/Makemodule.am @@ -34,6 +34,7 @@ dist_noinst_HEADERS += \ include/optutils.h \ include/pager.h \ include/pamfail.h \ + include/partx.h \ include/path.h \ include/pathnames.h \ include/plymouth-ctrl.h \ diff --git a/include/partx.h b/include/partx.h new file mode 100644 index 000000000..96206bd7c --- /dev/null +++ b/include/partx.h @@ -0,0 +1,62 @@ +#ifndef UTIL_LINUX_PARTX_H +#define UTIL_LINUX_PARTX_H + +#include <sys/ioctl.h> +#include <linux/blkpg.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 */ |