The C and C++ Include Header Files

/usr/include/linux/blkpg.h


$ cat -n /usr/include/linux/blkpg.h

     1	/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
     2	#ifndef __LINUX_BLKPG_H
     3	#define __LINUX_BLKPG_H
     4	
     5	
     6	#include <linux/ioctl.h>
     7	
     8	#define BLKPG      _IO(0x12,105)
     9	
    10	/* The argument structure */
    11	struct blkpg_ioctl_arg {
    12	        int op;
    13	        int flags;
    14	        int datalen;
    15	        void *data;
    16	};
    17	
    18	/* The subfunctions (for the op field) */
    19	#define BLKPG_ADD_PARTITION	1
    20	#define BLKPG_DEL_PARTITION	2
    21	#define BLKPG_RESIZE_PARTITION	3
    22	
    23	/* Sizes of name fields. Unused at present. */
    24	#define BLKPG_DEVNAMELTH	64
    25	#define BLKPG_VOLNAMELTH	64
    26	
    27	/* The data structure for ADD_PARTITION and DEL_PARTITION */
    28	struct blkpg_partition {
    29		long long start;		/* starting offset in bytes */
    30		long long length;		/* length in bytes */
    31		int pno;			/* partition number */
    32		char devname[BLKPG_DEVNAMELTH];	/* unused / ignored */
    33		char volname[BLKPG_VOLNAMELTH];	/* unused / ignore */
    34	};
    35	
    36	#endif /* __LINUX_BLKPG_H */