signal.c File Reference

#include "mos/tasks/signal.h"
#include "mos/mm/slab.h"
#include "mos/mm/slab_autoinit.h"
#include "mos/platform/platform.h"
#include "mos/syslog/printk.h"
#include "mos/tasks/process.h"
#include "mos/tasks/schedule.h"
#include "mos/tasks/thread.h"
#include <errno.h>
#include <limits.h>
#include <mos/lib/structures/list.h>
#include <mos/lib/sync/spinlock.h>
#include <mos/tasks/signal_types.h>
#include <mos_stdlib.h>
#include <mos_string.h>

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Functions
static int	sigset_add (sigset_t *sigset, int sig)
static int	sigset_del (sigset_t *sigset, int sig)
static int	sigset_test (const sigset_t *sigset, int sig)
	SLAB_AUTOINIT ("signal_pending", sigpending_slab, sigpending_t)
static void	signal_do_coredump (signal_t signal)
static void	signal_do_terminate (signal_t signal)
static void	signal_do_ignore (signal_t signal)
static bool	is_fatal_signal (signal_t signal)
long	signal_send_to_thread (thread_t *target, signal_t signal)
	Send a signal to a thread.
long	signal_send_to_process (process_t *target, signal_t signal)
	Send a signal to a process, an arbitrary thread will be chosen to receive the signal.
static signal_t	signal_get_next_pending (void)
static void	do_signal_exit_to_user_prepare (platform_regs_t *regs, signal_t next_signal, const sigaction_t *action)
void	signal_exit_to_user_prepare (platform_regs_t *regs)
	Prepare to exit to userspace.
void	signal_exit_to_user_prepare_syscall (platform_regs_t *regs, reg_t syscall_nr, reg_t syscall_ret)
	Prepare to exit to userspace after a syscall.
void	signal_on_returned (sigreturn_data_t *data)
	Return from a signal handler.
bool	signal_has_pending (void)
	Return true if there's a pending signal.

Variables
slab_t *	sigpending_slab = NULL

Function Documentation

sigset_add()

static int sigset_add ( sigset_t * sigset, int sig )

static

Definition at line 21 of file signal.c.

Referenced by do_signal_exit_to_user_prepare().

sigset_del()

static int sigset_del ( sigset_t * sigset, int sig )

static

Definition at line 31 of file signal.c.

Referenced by signal_on_returned().

sigset_test()

static int sigset_test ( const sigset_t * sigset, int sig )

static

Definition at line 41 of file signal.c.

Referenced by do_signal_exit_to_user_prepare(), signal_get_next_pending(), and signal_has_pending().

SLAB_AUTOINIT()

SLAB_AUTOINIT	(	"signal_pending"	,
		sigpending_slab	,
		sigpending_t	)

signal_do_coredump()

static void signal_do_coredump ( signal_t signal )

static

Definition at line 53 of file signal.c.

Referenced by do_signal_exit_to_user_prepare().

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signal_do_terminate()

static void signal_do_terminate ( signal_t signal )

static

Definition at line 59 of file signal.c.

Referenced by do_signal_exit_to_user_prepare(), and signal_get_next_pending().

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signal_do_ignore()

static void signal_do_ignore ( signal_t signal )

static

Definition at line 68 of file signal.c.

Referenced by do_signal_exit_to_user_prepare().

is_fatal_signal()

static bool is_fatal_signal ( signal_t signal )

static

Definition at line 73 of file signal.c.

Referenced by do_signal_exit_to_user_prepare(), signal_get_next_pending(), and signal_send_to_thread().

signal_get_next_pending()

static signal_t signal_get_next_pending ( void )

static

Definition at line 173 of file signal.c.

Referenced by signal_exit_to_user_prepare(), and signal_exit_to_user_prepare_syscall().

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do_signal_exit_to_user_prepare()

static void do_signal_exit_to_user_prepare ( platform_regs_t * regs, signal_t next_signal, const sigaction_t * action )

static

Definition at line 200 of file signal.c.

Referenced by signal_exit_to_user_prepare(), and signal_exit_to_user_prepare_syscall().

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