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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_SIGNAL_TYPES_H
#define _LINUX_SIGNAL_TYPES_H
/*
* Basic signal handling related data type definitions:
*/
#include <linux/list.h>
#include <uapi/linux/signal.h>
typedef struct kernel_siginfo {
__SIGINFO;
} kernel_siginfo_t;
struct ucounts;
/*
* Real Time signals may be queued.
*/
struct sigqueue {
struct list_head list;
int flags;
kernel_siginfo_t info;
struct ucounts *ucounts;
};
/* flags values. */
#define SIGQUEUE_PREALLOC 1
struct sigpending {
struct list_head list;
sigset_t signal;
};
struct sigaction {
#ifndef __ARCH_HAS_IRIX_SIGACTION
__sighandler_t sa_handler;
unsigned long sa_flags;
#else
unsigned int sa_flags;
__sighandler_t sa_handler;
#endif
#ifdef __ARCH_HAS_SA_RESTORER
__sigrestore_t sa_restorer;
#endif
sigset_t sa_mask; /* mask last for extensibility */
};
struct k_sigaction {
struct sigaction sa;
#ifdef __ARCH_HAS_KA_RESTORER
__sigrestore_t ka_restorer;
#endif
};
#ifdef CONFIG_OLD_SIGACTION
struct old_sigaction {
__sighandler_t sa_handler;
old_sigset_t sa_mask;
unsigned long sa_flags;
__sigrestore_t sa_restorer;
};
#endif
struct ksignal {
struct k_sigaction ka;
kernel_siginfo_t info;
int sig;
};
/* Used to kill the race between sigaction and forced signals */
#define SA_IMMUTABLE 0x00800000
#ifndef __ARCH_UAPI_SA_FLAGS
#ifdef SA_RESTORER
#define __ARCH_UAPI_SA_FLAGS SA_RESTORER
#else
#define __ARCH_UAPI_SA_FLAGS 0
#endif
#endif
#define UAPI_SA_FLAGS \
(SA_NOCLDSTOP | SA_NOCLDWAIT | SA_SIGINFO | SA_ONSTACK | SA_RESTART | \
SA_NODEFER | SA_RESETHAND | SA_EXPOSE_TAGBITS | __ARCH_UAPI_SA_FLAGS)
#endif /* _LINUX_SIGNAL_TYPES_H */
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