psignal(3C) Standard C Library Functions psignal(3C)NAME
psignal, psiginfo - system signal messages
SYNOPSIS
#include <siginfo.h>
void psignal(int sig, const char *s);
void psiginfo(siginfo_t *pinfo, char *s);
DESCRIPTION
The psignal() and psiginfo() functions produce messages on the standard error output describing a signal. The sig argument is a signal
that may have been passed as the first argument to a signal handler. The pinfo argument is a pointer to a siginfo structure that may have
been passed as the second argument to an enhanced signal handler. See sigaction(2). The argument string s is printed first, followed by a
colon and a blank, followed by the message and a NEWLINE character.
USAGE
Messages printed from these functions are in the native language specified by the LC_MESSAGES locale category. See setlocale(3C).
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|MT-Level |Safe |
+-----------------------------+-----------------------------+
SEE ALSO sigaction(2), gettext(3C), perror(3C), setlocale(3C), siginfo.h(3HEAD), signal.h(3HEAD), attributes(5)SunOS 5.11 31 Mar 2005 psignal(3C)
Check Out this Related Man Page
PSIGNAL(3) Linux Programmer's Manual PSIGNAL(3)NAME
psignal, psiginfo - print signal message
SYNOPSIS
#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
DESCRIPTION
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(3)).
The array sys_siglist holds the signal description strings indexed by signal number.
RETURN VALUE
The psignal() and psiginfo() functions return no value.
VERSIONS
The psiginfo() function was added to glibc in version 2.10.
CONFORMING TO
POSIX.1-2008, 4.3BSD.
BUGS
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.
SEE ALSO sigaction(2), perror(3), strsignal(3), signal(7)COLOPHON
This page is part of release 3.53 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)