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



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

NNAAMMEE
       strsignal -- get name of signal

SSYYNNOOPPSSIISS
       #include <string.h>

       char *strsignal(int _s_i_g_n_u_m);

DDEESSCCRRIIPPTTIIOONN
       The _s_t_r_s_i_g_n_a_l() function shall map the signal number in _s_i_g_n_u_m to an
       implementation-defined string and shall return a pointer to it.  It
       shall use the same set of messages as the _p_s_i_g_n_a_l() 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 _s_t_r_s_i_g_n_a_l() or _s_e_t_l_o_c_a_l_e().  The returned
       pointer might also be invalidated if the calling thread is terminated.

       The contents of the message strings returned by _s_t_r_s_i_g_n_a_l() should be
       determined by the setting of the _L_C___M_E_S_S_A_G_E_S category in the current
       locale.

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

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

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

RREETTUURRNN VVAALLUUEE
       Upon successful completion, _s_t_r_s_i_g_n_a_l() shall return a pointer to a
       string. Otherwise, if _s_i_g_n_u_m is not a valid signal number, the return
       value is unspecified.

EERRRROORRSS
       No errors are defined.

       _T_h_e _f_o_l_l_o_w_i_n_g _s_e_c_t_i_o_n_s _a_r_e _i_n_f_o_r_m_a_t_i_v_e_.

EEXXAAMMPPLLEESS
       None.

AAPPPPLLIICCAATTIIOONN UUSSAAGGEE
       None.

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

FFUUTTUURREE DDIIRREECCTTIIOONNSS
       None.

SSEEEE AALLSSOO
       _p_s_i_g_i_n_f_o(), _s_e_t_l_o_c_a_l_e()

       The Base Definitions volume of POSIX.1-2017, <<ssttrriinngg..hh>>

CCOOPPYYRRIIGGHHTT
       Portions of this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1-2017, Standard for Information Technology --
       Portable Operating System Interface (POSIX), The Open Group Base
       Specifications Issue 7, 2018 Edition, Copyright (C) 2018 by the
       Institute of Electrical and Electronics Engineers, Inc and The Open
       Group.  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.opengroup.org/unix/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 .



IEEE/The Open Group                  2017                         STRSIGNAL(3)
