sigprocm(2) [minix man page]

SIGPROCMASK(2)							System Calls Manual						    SIGPROCMASK(2)

NAME

       sigprocmask - manipulate the signal mask

SYNOPSIS

       #include <signal.h>

       int sigprocmask(int how, const sigset_t *set, sigset_t *oset)

DESCRIPTION

       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).

DIAGNOSTICS

       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.

AUTHOR

       Kees J. Bot (kjb@cs.vu.nl)

																    SIGPROCMASK(2)

PTHREAD_SIGMASK(2)					      BSD System Calls Manual						PTHREAD_SIGMASK(2)

NAME

     pthread_sigmask -- examine and/or change a thread's signal mask

SYNOPSIS

     #include <signal.h>

     int
     pthread_sigmask(int how, const sigset_t *restrict set, sigset_t *restrict oset);

DESCRIPTION

     The pthread_sigmask() function examines and/or changes the calling thread's signal mask.

     If set is not NULL, it specifies a set of signals to be modified, and how specifies what to set the signal mask to:

     SIG_BLOCK	  Union of the current mask and set.

     SIG_UNBLOCK  Intersection of the current mask and the complement of set.

     SIG_SETMASK  set.

     If oset is not NULL, the previous signal mask is stored in the location pointed to by oset.

     SIGKILL and SIGSTOP cannot be blocked, and will be silently ignored if included in the signal mask.

RETURN VALUES

     If successful, pthread_sigmask() returns 0.  Otherwise, an error is returned.

ERRORS

     pthread_sigmask() will fail if:

     [EINVAL]		how is not one of the defined values.

LEGACY SYNOPSIS

     #include <pthread.h>
     #include <signal.h>

     The include file <pthread.h> is necessary.

SEE ALSO

     sigaction(2), sigpending(2), sigprocmask(2), sigsuspend(2), sigsetops(3), compat(5)

STANDARDS

     pthread_sigmask() conforms to ISO/IEC 9945-1:1996 (``POSIX.1'')

BSD
								  April 27, 2000							       BSD