SYS_RT_SIGACTION(9) Driver Basics SYS_RT_SIGACTION(9)NAME
sys_rt_sigaction - alter an action taken by a process
long sys_rt_sigaction(int sig, const struct sigaction __user * act, struct sigaction __user * oact, size_t sigsetsize);
signal to be sent
used to save the previous sigaction
size of sigset_t type
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 SYS_RT_SIGACTION(9)
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bsd_signal(3C) Standard C Library Functions bsd_signal(3C)NAME
bsd_signal - simplified signal facilities
void (*bsd_signal(int sig, void (*func)(int)))(int);
The bsd_signal() function provides a partially compatible interface for programs written to historical system interfaces (see USAGE below).
The function call bsd_signal(sig, func) has an effect as if implemented as:
void (*bsd_signal(int sig, void (*func)(int)))(int)
struct sigaction act, oact;
act.sa_handler = func;
act.sa_flags = SA_RESTART;
if (sigaction(sig, &act, &oact) == -1)
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
Upon successful completion, bsd_signal() returns the previous action for sig. Otherwise, SIG_ERR is returned and errno is set to indicate
Refer to sigaction(2).
This function is a direct replacement for the BSD signal(3UCB) function for simple applications that are installing a single-argument sig-
nal handler function. If a BSD signal handler function is being installed that expects more than one argument, the application has to be
modified to use sigaction(2). The bsd_signal() function differs from signal(3UCB) in that the SA_RESTART flag is set and the SA_RESETHAND
will be clear when bsd_signal() is used. The state of these flags is not specified for signal(3UCB).
See attributes(5) for descriptions of the following attributes:
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|Interface Stability |Standard |
SEE ALSO sigaction(2), sigaddset(3C), sigemptyset(3C), signal(3UCB), attributes(5), standards(5)SunOS 5.10 24 Jul 2002 bsd_signal(3C)
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