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sys_rt_sigaction(9) [centos man page]

SYS_RT_SIGACTION(9)						   Driver Basics					       SYS_RT_SIGACTION(9)

NAME
sys_rt_sigaction - alter an action taken by a process SYNOPSIS
long sys_rt_sigaction(int sig, const struct sigaction __user * act, struct sigaction __user * oact, size_t sigsetsize); ARGUMENTS
sig signal to be sent act new sigaction oact used to save the previous sigaction sigsetsize size of sigset_t type COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 SYS_RT_SIGACTION(9)

Check Out this Related Man Page

BSD_SIGNAL(3P)						     POSIX Programmer's Manual						    BSD_SIGNAL(3P)

PROLOG
This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the correspond- ing Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux. NAME
bsd_signal - simplified signal facilities SYNOPSIS
#include <signal.h> void (*bsd_signal(int sig, void (*func)(int)))(int); DESCRIPTION
The bsd_signal() function provides a partially compatible interface for programs written to historical system interfaces (see APPLICATION USAGE). The function call bsd_signal(sig, func) shall be equivalent to the following: void (*bsd_signal(int sig, void (*func)(int)))(int) { struct sigaction act, oact; act.sa_handler = func; act.sa_flags = SA_RESTART; sigemptyset(&act.sa_mask); sigaddset(&act.sa_mask, sig); if (sigaction(sig, &act, &oact) == -1) return(SIG_ERR); return(oact.sa_handler); } The handler function should be declared: void handler(int sig); where sig is the signal number. The behavior is undefined if func is a function that takes more than one argument, or an argument of a dif- ferent type. RETURN VALUE
Upon successful completion, bsd_signal() shall return the previous action for sig. Otherwise, SIG_ERR shall be returned and errno shall be set to indicate the error. ERRORS
Refer to sigaction(). The following sections are informative. EXAMPLES
None. APPLICATION USAGE
This function is a direct replacement for the BSD signal() function for simple applications that are installing a single-argument signal handler function. If a BSD signal handler function is being installed that expects more than one argument, the application has to be modi- fied to use sigaction(). The bsd_signal() function differs from signal() in that the SA_RESTART flag is set and the SA_RESETHAND is clear when bsd_signal() is used. The state of these flags is not specified for signal(). It is recommended that new applications use the sigaction() function. RATIONALE
None. FUTURE DIRECTIONS
None. SEE ALSO
sigaction(), sigaddset(), sigemptyset(), signal(), the Base Definitions volume of IEEE Std 1003.1-2001, <signal.h> COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol- ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html . IEEE
/The Open Group 2003 BSD_SIGNAL(3P)

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