disk-utils/partx.h

   1 #ifndef UTIL_LINUX_PARTX_H
   2 #define UTIL_LINUX_PARTX_H
   3
   4 #include <sys/ioctl.h>
   5 #include <linux/blkpg.h>
   6
   7 static inline int partx_del_partition(int fd, unsigned int partno)
   8 {
   9         struct blkpg_ioctl_arg a;
  10         struct blkpg_partition p;
  11
  12         p.pno = partno;
  13         p.start = 0;
  14         p.length = 0;
  15         p.devname[0] = 0;
  16         p.volname[0] = 0;
  17         a.op = BLKPG_DEL_PARTITION;
  18         a.flags = 0;
  19         a.datalen = sizeof(p);
  20         a.data = &p;
  21
  22         return ioctl(fd, BLKPG, &a);
  23 }
  24
  25 static inline int partx_add_partition(int fd, int partno,
  26                         uint64_t start, uint64_t size)
  27 {
  28         struct blkpg_ioctl_arg a;
  29         struct blkpg_partition p;
  30
  31         p.pno = partno;
  32         p.start = start << 9;
  33         p.length = size << 9;
  34         p.devname[0] = 0;
  35         p.volname[0] = 0;
  36         a.op = BLKPG_ADD_PARTITION;
  37         a.flags = 0;
  38         a.datalen = sizeof(p);
  39         a.data = &p;
  40
  41         return ioctl(fd, BLKPG, &a);
  42 }
  43
  44 #endif /*  UTIL_LINUX_PARTX_H */