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The Open Group Base Specifications Issue 7
IEEE Std 1003.1-2008
Copyright © 2001-2008 The IEEE and The Open Group

#### NAME

> psiginfo, psignal - print signal information to standard error

#### SYNOPSIS

> ``[CX] #include <signal.h>
> void psiginfo(const siginfo_t *`pinfo`, const char *`message`);
> void psignal(int` signum`, const char *`message`);``
> `
> `

#### DESCRIPTION

> The psiginfo() and psignal() functions shall print a message out on stderr associated with a signal number. If message is not null and is not the empty string, then the string pointed to by the message argument shall be printed first, followed by a <colon>, a <space>, and the signal description string indicated by signum, or by the signal associated with pinfo. If the message argument is null or points to an empty string, then only the signal description shall be printed. For psiginfo(), the argument pinfo references a valid siginfo_t structure. For psignal(), if signum is not a valid signal number, the behavior is implementation-defined.

> The psiginfo() and psignal() functions shall not change the orientation of the standard error stream.

> The psiginfo() and psignal() functions shall mark for update the last data modification and last file status change timestamps of the file associated with the standard error stream at some time between their successful completion and exit(), abort(), or the completion of fflush() or fclose() on stderr.

#### RETURN VALUE

> These functions shall not return a value.

#### ERRORS

> No errors are defined.

The following sections are informative.

#### EXAMPLES

> None.

#### APPLICATION USAGE

> None.

#### RATIONALE

> System V historically has psignal() and psiginfo() in <siginfo.h>. However, the <siginfo.h> header is not specified in the Base Definitions volume of POSIX.1-2008, and the type siginfo_t is defined in <signal.h>.

#### FUTURE DIRECTIONS

> None.

#### SEE ALSO

> perror , strsignal

> XBD <signal.h>

#### CHANGE HISTORY

> First released in Issue 7.

End of informative text.

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Copyright © 2001-2008 The IEEE and The Open Group, All Rights Reserved
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