| NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | VERSIONS | CONFORMING TO | BUGS | SEE ALSO | COLOPHON | The Linux Programming Interface |
PSIGNAL(3) Linux Programmer's Manual PSIGNAL(3)
psignal, psiginfo - print signal message
#include <signal.h>
void psignal(int sig, const char *s);
void psiginfo(const siginfo_t *pinfo, const char *s);
extern const char *const sys_siglist[];
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
psignal(): _SVID_SOURCE || _BSD_SOURCE
psiginfo(): _XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L
sys_siglist: _BSD_SOURCE
The psignal() function displays a message on stderr consisting of the string
s, a colon, a space, a string describing the signal number sig, and a trailing
newline. If the string s is NULL or empty, the colon and space are omitted.
If sig is invalid, the message displayed will indicate an unknown signal.
The psiginfo() function is like psignal(), except that it displays information
about the signal described by pinfo, which should point to a valid siginfo_t
structure. As well as the signal description, psiginfo() displays information
about the origin of the signal, and other information relevant to the signal
(e.g., the relevant memory address for hardware-generated signals, the child
process ID for SIGCHLD, and the user ID and process ID of the sender, for
signals set using kill(2) or sigqueue(2)).
The array sys_siglist holds the signal description strings indexed by signal
number.
The psignal() and psiginfo() functions return no value.
The psiginfo() function was added to glibc in version 2.10.
POSIX.1-2008, 4.3BSD.
In glibc versions up to 2.12, psiginfo() had the following bugs:
* In some circumstances, a trailing newline is not printed.
* Additional details are not displayed for real-time signals.
sigaction(2), perror(3), strsignal(3), signal(7)
This page is part of release 3.32 of the Linux man-pages project. A
description of the project, and information about reporting bugs, can be found
at http://www.kernel.org/doc/man-pages/.
GNU 2010-10-06 PSIGNAL(3)
HTML rendering created 2010-12-03 by Michael Kerrisk, author of The Linux Programming Interface