sigdelset(3p) [posix man page]
SIGDELSET(3P) POSIX Programmer's Manual SIGDELSET(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
sigdelset -- delete a signal from a signal set SYNOPSIS
#include <signal.h> int sigdelset(sigset_t *set, int signo); DESCRIPTION
The sigdelset() function deletes the individual signal specified by signo from the signal set pointed to by set. Applications should call either sigemptyset() or sigfillset() at least once for each object of type sigset_t prior to any other use of that object. If such an object is not initialized in this way, but is nonetheless supplied as an argument to any of pthread_sigmask(), sigac- tion(), sigaddset(), sigdelset(), sigismember(), sigpending(), sigprocmask(), sigsuspend(), sigtimedwait(), sigwait(), or sigwaitinfo(), the results are undefined. RETURN VALUE
Upon successful completion, sigdelset() shall return 0; otherwise, it shall return -1 and set errno to indicate the error. ERRORS
The sigdelset() function may fail if: EINVAL The signo argument is not a valid signal number, or is an unsupported signal number. The following sections are informative. EXAMPLES
None. APPLICATION USAGE
None. RATIONALE
None. FUTURE DIRECTIONS
None. SEE ALSO
Section 2.4, Signal Concepts, pthread_sigmask(), sigaction(), sigaddset(), sigemptyset(), sigfillset(), sigismember(), sigpending(), sig- suspend() The Base Definitions volume of POSIX.1-2008, <signal.h> COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2013 Edition, Standard for Information Technol- ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 7, Copyright (C) 2013 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) 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 Stan- dard is the referee document. The original Standard can be obtained online at http://www.unix.org/online.html . Any typographical or formatting errors that appear in this page are most likely to have been introduced during the conversion of the source files to man page format. To report such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html . IEEE
/The Open Group 2013 SIGDELSET(3P)
Check Out this Related Man Page
SIGISMEMBER(3P) POSIX Programmer's Manual SIGISMEMBER(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
sigismember -- test for a signal in a signal set SYNOPSIS
#include <signal.h> int sigismember(const sigset_t *set, int signo); DESCRIPTION
The sigismember() function shall test whether the signal specified by signo is a member of the set pointed to by set. Applications should call either sigemptyset() or sigfillset() at least once for each object of type sigset_t prior to any other use of that object. If such an object is not initialized in this way, but is nonetheless supplied as an argument to any of pthread_sigmask(), sigac- tion(), sigaddset(), sigdelset(), sigismember(), sigpending(), sigprocmask(), sigsuspend(), sigtimedwait(), sigwait(), or sigwaitinfo(), the results are undefined. RETURN VALUE
Upon successful completion, sigismember() shall return 1 if the specified signal is a member of the specified set, or 0 if it is not. Oth- erwise, it shall return -1 and set errno to indicate the error. ERRORS
The sigismember() function may fail if: EINVAL The signo argument is not a valid signal number, or is an unsupported signal number. The following sections are informative. EXAMPLES
None. APPLICATION USAGE
None. RATIONALE
None. FUTURE DIRECTIONS
None. SEE ALSO
Section 2.4, Signal Concepts, pthread_sigmask(), sigaction(), sigaddset(), sigdelset(), sigfillset(), sigemptyset(), sigpending(), sigsus- pend() The Base Definitions volume of POSIX.1-2008, <signal.h> COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2013 Edition, Standard for Information Technol- ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 7, Copyright (C) 2013 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) 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 Stan- dard is the referee document. The original Standard can be obtained online at http://www.unix.org/online.html . Any typographical or formatting errors that appear in this page are most likely to have been introduced during the conversion of the source files to man page format. To report such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html . IEEE
/The Open Group 2013 SIGISMEMBER(3P)