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/*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*/
/*
* Copyright 2016 Joyent, Inc.
*/
/*
* Header file to support the signalfd facility. Note that this facility
* is designed to be binary compatible with the Linux signalfd facility, modulo
* the signals themselves; values for constants here should therefore exactly
* match those found in Linux, and this facility shouldn't be extended
* independently of Linux.
*/
#ifndef _SYS_SIGNALFD_H
#define _SYS_SIGNALFD_H
#include <sys/types.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
* To assure binary compatibility with Linux, these values are fixed at their
* Linux equivalents, not their native ones.
*/
#define SFD_CLOEXEC 02000000 /* LX_O_CLOEXEC */
#define SFD_NONBLOCK 04000 /* LX_O_NONBLOCK */
/*
* These ioctl values are specific to the native implementation; applications
* shouldn't be using them directly, and they should therefore be safe to
* change without breaking apps.
*/
#define SIGNALFDIOC (('s' << 24) | ('f' << 16) | ('d' << 8))
#define SIGNALFDIOC_MASK (SIGNALFDIOC | 1) /* set mask */
typedef struct signalfd_siginfo {
uint32_t ssi_signo; /* signal from signal.h */
int32_t ssi_errno; /* error from errno.h */
int32_t ssi_code; /* signal code */
uint32_t ssi_pid; /* PID of sender */
uint32_t ssi_uid; /* real UID of sender */
int32_t ssi_fd; /* File descriptor (SIGIO) */
uint32_t ssi_tid; /* unused */
uint32_t ssi_band; /* band event (SIGIO) */
uint32_t ssi_overrun; /* unused */
uint32_t ssi_trapno; /* trap number that caused signal */
int32_t ssi_status; /* exit status or signal (SIGCHLD) */
int32_t ssi_int; /* unused */
uint64_t ssi_ptr; /* unused */
uint64_t ssi_utime; /* user CPU time consumed (SIGCHLD) */
uint64_t ssi_stime; /* system CPU time consumed (SIGCHLD) */
uint64_t ssi_addr; /* address that generated signal */
uint8_t ssi_pad[48]; /* Pad size to 128 bytes to allow for */
/* additional fields in the future. */
} signalfd_siginfo_t;
#ifndef _KERNEL
extern int signalfd(int, const sigset_t *, int);
#else
#define SIGNALFDMNRN_SIGNALFD 0
#define SIGNALFDMNRN_CLONE 1
/*
* This holds the proc_t state for a process which is using signalfd.
* Its presence and contents are protected by p_lock.
*/
typedef struct sigfd_proc_state {
void (*sigfd_pollwake_cb)(void *, int);
list_t sigfd_list;
} sigfd_proc_state_t;
extern void (*sigfd_exit_helper)();
#endif /* _KERNEL */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_SIGNALFD_H */
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