strsignal(3p) — Linux manual page


STRSIGNAL(3P)             POSIX Programmer's Manual            STRSIGNAL(3P)

PROLOG         top

       This manual page is part of the POSIX Programmer's Manual.  The Linux
       implementation of this interface may differ (consult the
       corresponding Linux manual page for details of Linux behavior), or
       the interface may not be implemented on Linux.

NAME         top

       strsignal — get name of signal

SYNOPSIS         top

       #include <string.h>

       char *strsignal(int signum);

DESCRIPTION         top

       The strsignal() function shall map the signal number in signum to an
       implementation-defined string and shall return a pointer to it.  It
       shall use the same set of messages as the psignal() function.

       The application shall not modify the string returned. The returned
       pointer might be invalidated or the string content might be
       overwritten by a subsequent call to strsignal() or setlocale().

       The contents of the message strings returned by strsignal() should be
       determined by the setting of the LC_MESSAGES category in the current

       The implementation shall behave as if no function defined in this
       standard calls strsignal().

       Since no return value is reserved to indicate an error, an
       application wishing to check for error situations should set errno to
       0, then call strsignal(), then check errno.

       The strsignal() function need not be thread-safe.

RETURN VALUE         top

       Upon successful completion, strsignal() shall return a pointer to a
       string. Otherwise, if signum is not a valid signal number, the return
       value is unspecified.

ERRORS         top

       No errors are defined.

       The following sections are informative.

EXAMPLES         top




RATIONALE         top

       If signum is not a valid signal number, some implementations return
       NULL, while for others the strsignal() function returns a pointer to
       a string containing an unspecified message denoting an unknown
       signal. POSIX.1‐2008 leaves this return value unspecified.



SEE ALSO         top

       psiginfo(3p), setlocale(3p)

       The Base Definitions volume of POSIX.1‐2008, string.h(0p)

COPYRIGHT         top

       Portions of this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1, 2013 Edition, Standard for Information
       Technology -- Portable Operating System Interface (POSIX), The Open
       Group Base Specifications Issue 7, Copyright (C) 2013 by the
       Institute of Electrical and Electronics Engineers, Inc and The Open
       Group.  (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1
       applied.) In the event of any discrepancy between this version and
       the original IEEE and The Open Group Standard, the original IEEE and
       The Open Group Standard is the referee document. The original
       Standard can be obtained online at .

       Any typographical or formatting errors that appear in this page are
       most likely to have been introduced during the conversion of the
       source files to man page format. To report such errors, see .

IEEE/The Open Group                 2013                       STRSIGNAL(3P)

Pages that refer to this page: string.h(0p)psiginfo(3p)psignal(3p)setlocale(3p)