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