SYS_RT_SIGPROCMASK(9) Driver Basics SYS_RT_SIGPROCMASK(9)NAME
sys_rt_sigprocmask - change the list of currently blocked signals
long sys_rt_sigprocmask(int how, sigset_t __user * nset, sigset_t __user * oset, size_t sigsetsize);
whether to add, remove, or set signals
stores pending signals
previous value of signal mask if non-null
size of sigset_t type
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 SYS_RT_SIGPROCMASK(9)
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SIGPROCMASK(2) System Calls Manual SIGPROCMASK(2)NAME
sigprocmask - manipulate the signal mask
int sigprocmask(int how, const sigset_t *set, sigset_t *oset)
Sigprocmask() examines or manipulates the signal mask. This mask is the set of signals that are currently blocked. The how argument
determines the action that must be performed. In all cases the signal set referenced by oset, if not NULL, will be used to receive the old
signal mask. The set argument, if not NULL, will be used to set or modify the current signal mask.
How can be one of:
SIG_BLOCK Add the signals referenced by set to the mask.
SIG_UNBLOCK Remove the signals referenced by set from the mask.
SIG_SETMASK Set the signal mask to the set referenced by set.
The value of how is ignored if set is NULL.
SEE ALSO sigaction(2), sigpending(2), sigsuspend(2), sigset(3).
Returns 0 on success and -1 on error. The error code is EFAULT for a bad set or oset address, or EINVAL for a bad how argument.
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