PROLOG

       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

       strsignal — get name of signal

SYNOPSIS

       #include <string.h>

       char *strsignal(int signum);

DESCRIPTION

       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 locale.

       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

       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

       No errors are defined.

       The following sections are informative.

EXAMPLES

       None.

APPLICATION USAGE

       None.

RATIONALE

       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.

FUTURE DIRECTIONS

       None.

SEE ALSO

       psiginfo(), setlocale()

       The Base Definitions volume of POSIX.1‐2008, <string.h>

COPYRIGHT

       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
       http://www.unix.org/online.html .

       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
       https://www.kernel.org/doc/man-pages/reporting_bugs.html .