psignal, psiginfo - print signal description
void psignal(int sig, const char *s);
void psiginfo(const siginfo_t *pinfo, const char *s);
Since glibc 2.19:
Glibc 2.19 and earlier:
_BSD_SOURCE || _SVID_SOURCE
psiginfo(): _POSIX_C_SOURCE >= 200809L
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 psignal() and psiginfo() functions return no value.
The psiginfo() function was added to glibc in version 2.10.
For an explanation of the terms used in this section, see attributes(7).
|psignal (), psiginfo ()
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.
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