mirror of https://github.com/sudo-project/sudo.git
101 lines
3.0 KiB
C
101 lines
3.0 KiB
C
/*
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* SPDX-License-Identifier: ISC
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*
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* Copyright (c) 2012-2015, 2017-2020 Todd C. Miller <Todd.Miller@sudo.ws>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/*
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* This is an open source non-commercial project. Dear PVS-Studio, please check it.
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* PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
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*/
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#include <config.h>
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#ifndef HAVE_SIG2STR
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#include <errno.h>
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#include <string.h>
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#include <ctype.h>
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#include <signal.h>
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#include <unistd.h>
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#include <sudo_compat.h>
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#include <sudo_util.h>
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#if !defined(HAVE_SIGABBREV_NP)
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# if defined(HAVE_DECL_SYS_SIGNAME) && HAVE_DECL_SYS_SIGNAME == 1
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# define sigabbrev_np(_x) sys_signame[(_x)]
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# elif defined(HAVE_DECL__SYS_SIGNAME) && HAVE_DECL__SYS_SIGNAME == 1
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# define sigabbrev_np(_x) _sys_signame[(_x)]
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# elif defined(HAVE_SYS_SIGABBREV)
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# define sigabbrev_np(_x) sys_sigabbrev[(_x)]
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# if defined(HAVE_DECL_SYS_SIGABBREV) && HAVE_DECL_SYS_SIGABBREV == 0
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/* sys_sigabbrev is not declared by glibc */
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extern const char *const sys_sigabbrev[NSIG];
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# endif
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# else
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# define sigabbrev_np(_x) sudo_sys_signame[(_x)]
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extern const char *const sudo_sys_signame[NSIG];
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# endif
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#endif /* !HAVE_SIGABBREV_NP */
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/*
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* Translate signal number to name.
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*/
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int
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sudo_sig2str(int signo, char *signame)
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{
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#if defined(SIGRTMIN) && defined(SIGRTMAX)
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/* Realtime signal support. */
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if (signo >= SIGRTMIN && signo <= SIGRTMAX) {
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# ifdef _SC_RTSIG_MAX
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const long rtmax = sysconf(_SC_RTSIG_MAX);
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# else
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const long rtmax = SIGRTMAX - SIGRTMIN;
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# endif
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if (rtmax > 0) {
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if (signo == SIGRTMIN) {
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strlcpy(signame, "RTMIN", SIG2STR_MAX);
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} else if (signo == SIGRTMAX) {
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strlcpy(signame, "RTMAX", SIG2STR_MAX);
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} else if (signo <= SIGRTMIN + (rtmax / 2) - 1) {
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(void)snprintf(signame, SIG2STR_MAX, "RTMIN+%d",
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(signo - SIGRTMIN));
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} else {
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(void)snprintf(signame, SIG2STR_MAX, "RTMAX-%d",
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(SIGRTMAX - signo));
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}
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}
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return 0;
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}
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#endif
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if (signo > 0 && signo < NSIG) {
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const char *cp = sigabbrev_np(signo);
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if (cp != NULL) {
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strlcpy(signame, cp, SIG2STR_MAX);
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/* Make sure we always return an upper case signame. */
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if (islower((unsigned char)signame[0])) {
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size_t i;
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for (i = 0; signame[i] != '\0'; i++)
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signame[i] = (char)toupper((unsigned char)signame[i]);
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}
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return 0;
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}
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}
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errno = EINVAL;
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return -1;
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}
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#endif /* HAVE_SIG2STR */
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