[linux-block.git] / include / uapi / linux / posix_types.h

/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _LINUX_POSIX_TYPES_H
#define _LINUX_POSIX_TYPES_H

#include <linux/stddef.h>

/*
 * This allows for 1024 file descriptors: if NR_OPEN is ever grown
 * beyond that you'll have to change this too. But 1024 fd's seem to be
 * enough even for such "real" unices like OSF/1, so hopefully this is
 * one limit that doesn't have to be changed [again].
 *
 * Note that POSIX wants the FD_CLEAR(fd,fdsetp) defines to be in
 * <sys/time.h> (and thus <linux/time.h>) - but this is a more logical
 * place for them. Solved by having dummy defines in <sys/time.h>.
 */

/*
 * This macro may have been defined in <gnu/types.h>. But we always
 * use the one here.
 */
#undef __FD_SETSIZE
#define __FD_SETSIZE	1024

typedef struct {
	unsigned long fds_bits[__FD_SETSIZE / (8 * sizeof(long))];
} __kernel_fd_set;

/* Type of a signal handler.  */
typedef void (*__kernel_sighandler_t)(int);

/* Type of a SYSV IPC key.  */
typedef int __kernel_key_t;
typedef int __kernel_mqd_t;

#include <asm/posix_types.h>

#endif /* _LINUX_POSIX_TYPES_H */
Commit	Line	Data
6f52b16c	1	/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
1da177e4 LT	2	#ifndef _LINUX_POSIX_TYPES_H
	3	#define _LINUX_POSIX_TYPES_H
	4
	5	#include <linux/stddef.h>
	6
	7	/*
	8	* This allows for 1024 file descriptors: if NR_OPEN is ever grown
	9	* beyond that you'll have to change this too. But 1024 fd's seem to be
	10	* enough even for such "real" unices like OSF/1, so hopefully this is
	11	* one limit that doesn't have to be changed [again].
	12	*
	13	* Note that POSIX wants the FD_CLEAR(fd,fdsetp) defines to be in
	14	* <sys/time.h> (and thus <linux/time.h>) - but this is a more logical
	15	* place for them. Solved by having dummy defines in <sys/time.h>.
	16	*/
	17
	18	/*
8ded2bbc JB	19	* This macro may have been defined in <gnu/types.h>. But we always
8ded2bbc JB	20	* use the one here.
1da177e4	21	*/
1da177e4 LT	22	#undef __FD_SETSIZE
	23	#define __FD_SETSIZE 1024
	24
1da177e4	25	typedef struct {
8ded2bbc	26	unsigned long fds_bits[__FD_SETSIZE / (8 * sizeof(long))];
1da177e4 LT	27	} __kernel_fd_set;
	28
	29	/* Type of a signal handler. */
	30	typedef void (*__kernel_sighandler_t)(int);
	31
	32	/* Type of a SYSV IPC key. */
	33	typedef int __kernel_key_t;
	34	typedef int __kernel_mqd_t;
	35
	36	#include <asm/posix_types.h>
	37
	38	#endif /* _LINUX_POSIX_TYPES_H */