NAME
psignal, psiginfo - print signal message SYNOPSIS
#include
void psignal(int sig, const char *s); void psiginfo(const siginfot *pinfo, const char *s); extern const char *const syssiglist[]; Feature Test Macro Requirements for glibc (see featuretestmacros(7)): psignal(): SVIDSOURCE || BSDSOURCE psiginfo(): XOPENSOURCE >= 700 || POSIXCSOURCE >= 200809L syssiglist: BSDSOURCE 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 siginfot structure. As well as the signal description, psig‐ info() 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 syssiglist 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
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GNU 2010-10-06 PSIGNAL(3)