kernel.tasks.signal

Signal handling. More...

Collaboration diagram for kernel.tasks.signal:

Classes
struct	sigpending_t
	A pending signal. More...
struct	sigreturn_data_t

Functions
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.
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 *supplimentary_data)
	Return from a signal handler.
bool	signal_has_pending (void)
	Return true if there's a pending signal.

Variables
slab_t *	sigpending_slab

Detailed Description

Signal handling.

Function Documentation

signal_send_to_thread()

long signal_send_to_thread	(	thread_t *	target,
		signal_t	signal )

Send a signal to a thread.

Parameters

target
signal

Definition at line 63 of file signal.c.

Referenced by DEFINE_SYSCALL(), DEFINE_SYSCALL(), invalid_page_fault(), ksyscall_enter(), pipe_write(), process_do_execveat(), process_handle_exit(), signal_send_to_process(), and x86_handle_exception().

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signal_send_to_process()

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.

Parameters

target
signal

Definition at line 93 of file signal.c.

Referenced by DEFINE_SYSCALL(), and process_handle_exit().

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signal_exit_to_user_prepare()

void signal_exit_to_user_prepare

(

platform_regs_t *

regs

)

Prepare to exit to userspace.

Parameters

regs	The registers of the thread.

Definition at line 212 of file signal.c.

Referenced by invalid_page_fault(), x86_interrupt_entry(), and x86_start_user_thread().

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signal_exit_to_user_prepare_syscall()

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.

Parameters

regs	The registers of the thread.
syscall_nr	The syscall number, used in case the syscall should be restarted.
syscall_ret	The return value of the syscall, which may be -ERESTARTSYS, in which case the syscall should be restarted.

Definition at line 228 of file signal.c.

Referenced by x86_interrupt_entry().

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signal_on_returned()

void signal_on_returned

(

sigreturn_data_t *

supplimentary_data

)

Return from a signal handler.

Definition at line 262 of file signal.c.

Referenced by platform_restore_from_signal_handler().

signal_has_pending()

bool signal_has_pending

(

void

)

Return true if there's a pending signal.

Definition at line 268 of file signal.c.

Referenced by console_io_read(), ipc_connect_to_server(), ipc_server_accept(), and process_wait_for_pid().

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Variable Documentation

sigpending_slab

slab_t* sigpending_slab

extern

Definition at line 18 of file signal.c.

Referenced by process_do_fork(), and signal_send_to_thread().