psignal, psiginfo - print signal description
#include <signal.h>
void psignal(int sig, const char *s);
void psiginfo(const siginfo_t *pinfo, const char *s);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
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 psiginfo() function was added to glibc in version 2.10.
For an explanation of the terms used in this section, see attributes(7).
Interface | Attribute | Value |
psignal(), psiginfo() | Thread safety | MT-Safe locale |
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.
This page is part of release 5.10 of the Linux man-pages
project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.