From cfe5e3905201349e9cf3f95d52ff4bd100bde37d Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 14 Apr 2024 21:10:49 +0200 Subject: Adding upstream version 2.39.3. Signed-off-by: Daniel Baumann --- include/partx.h | 67 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 include/partx.h (limited to 'include/partx.h') diff --git a/include/partx.h b/include/partx.h new file mode 100644 index 0000000..7924aae --- /dev/null +++ b/include/partx.h @@ -0,0 +1,67 @@ +/* + * No copyright is claimed. This code is in the public domain; do with + * it what you wish. + */ +#ifndef UTIL_LINUX_PARTX_H +#define UTIL_LINUX_PARTX_H + +#include +#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 + + +#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 */ -- cgit v1.2.3