From b13154de3eca5ba28fbb4854d916cd0be5febeed Mon Sep 17 00:00:00 2001 From: Igor Pashev Date: Fri, 2 Nov 2012 20:15:39 +0400 Subject: Imported Upstream version 2.22 --- disk-utils/partx.h | 75 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 75 insertions(+) create mode 100644 disk-utils/partx.h (limited to 'disk-utils/partx.h') diff --git a/disk-utils/partx.h b/disk-utils/partx.h new file mode 100644 index 0000000..254cd85 --- /dev/null +++ b/disk-utils/partx.h @@ -0,0 +1,75 @@ +#ifndef UTIL_LINUX_PARTX_H +#define UTIL_LINUX_PARTX_H + +#include +#include + +#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 + +static inline int partx_del_partition(int fd, unsigned int partno) +{ + struct blkpg_ioctl_arg a; + struct blkpg_partition p; + + p.pno = partno; + p.start = 0; + p.length = 0; + p.devname[0] = 0; + p.volname[0] = 0; + a.op = BLKPG_DEL_PARTITION; + a.flags = 0; + a.datalen = sizeof(p); + a.data = &p; + + return ioctl(fd, BLKPG, &a); +} + +static inline int partx_add_partition(int fd, int partno, + uint64_t start, uint64_t size) +{ + struct blkpg_ioctl_arg a; + struct blkpg_partition p; + + p.pno = partno; + p.start = start << 9; + p.length = size << 9; + p.devname[0] = 0; + p.volname[0] = 0; + a.op = BLKPG_ADD_PARTITION; + a.flags = 0; + a.datalen = sizeof(p); + a.data = &p; + + return ioctl(fd, BLKPG, &a); +} + +static inline int partx_resize_partition(int fd, int partno, + uint64_t start, uint64_t size) +{ + struct blkpg_ioctl_arg a; + struct blkpg_partition p; + + p.pno = partno; + p.start = start << 9; + p.length = size << 9; + p.devname[0] = 0; + p.volname[0] = 0; + a.op = BLKPG_RESIZE_PARTITION; + a.flags = 0; + a.datalen = sizeof(p); + a.data = &p; + + return ioctl(fd, BLKPG, &a); +} + +#endif /* UTIL_LINUX_PARTX_H */ -- cgit v1.2.3