sigprocmask(2) 맨 페이지 - 윈디하나의 솔라나라


맨 페이지 이름


sigprocmask(2)                   System Calls                   sigprocmask(2)

       sigprocmask - change or examine caller's signal mask

       #include <signal.h>

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

       The  sigprocmask()  function is used to examine and/or change the call‐
       er's signal mask. If the value is SIG_BLOCK, the set pointed to by  the
       set  argument  is  added  to  the  current signal mask. If the value is
       SIG_UNBLOCK, the set pointed by the set argument is  removed  from  the
       current  signal  mask.  If the value is SIG_SETMASK, the current signal
       mask is replaced by the set pointed to by the set argument. If the oset
       argument  is not NULL, the previous mask is stored in the space pointed
       to by oset. If the value of the set argument is NULL, the value how  is
       not  significant  and  the caller's signal mask is unchanged; thus, the
       call can be used to inquire about currently blocked signals. If the set
       or  oset  argument  points to an invalid address, the behavior is unde‐
       fined and errno may be set to EFAULT.

       If there are any pending unblocked signals after the call  to  sigproc‐
       mask(), at least one of those signals will be delivered before the call
       to sigprocmask() returns.

       It is not possible to block signals that cannot be  caught  or  ignored
       (see sigaction(2)). It is also not possible to block or unblock SIGCAN‐
       CEL, as SIGCANCEL is reserved for the implementation  of  POSIX  thread
       cancellation   (see   pthread_cancel(3C)   and  cancellation(7)).  This
       restriction is silently enforced by the standard C library.

       If sigprocmask() fails, the caller's signal mask is not changed.

       Upon successful completion, 0 is returned. Otherwise,  −1  is  returned
       and errno is set to indicate the error.

       The sigprocmask() function will fail if:

       EINVAL    The  value  of  the  how  argument is not equal to one of the
                 defined values.

       The sigprocmask() function may fail if:

       EFAULT    The set or oset argument points to an illegal address.

       See attributes(7) for descriptions of the following attributes:

       tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE  TYPEAT‐
       TRIBUTE  VALUE  _  Interface StabilityCommitted _ MT-LevelAsync-Signal-
       Safe _ StandardSee standards(7).

       sigaction(2),  pthread_cancel(3C),   pthread_sigmask(3C),   signal(3C),
       sigsetops(3C), signal.h(3HEAD), attributes(7), cancellation(7)

       The  call  to  sigprocmask()  affects  only the calling thread's signal
       mask. It is identical to a call to pthread_sigmask(3C).

       Signals that are generated synchronously should not be masked. If  such
       a signal is blocked and delivered, the receiving process is killed.

Oracle Solaris 11.4               23 Mar 2005                   sigprocmask(2)
맨 페이지 내용의 저작권은 맨 페이지 작성자에게 있습니다.