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util-linux/lib/signames.c

204 lines
6.1 KiB

/*
* Copyright (c) 1988, 1993, 1994, 2017
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* 2017-10-14 Niklas Hambüchen <mail@nh2.me>
* - Extracted signal names mapping from kill.c
*
* Copyright (C) 2014 Sami Kerola <kerolasa@iki.fi>
* Copyright (C) 2014 Karel Zak <kzak@redhat.com>
* Copyright (C) 2017 Niklas Hambüchen <mail@nh2.me>
*/
#include <ctype.h> /* for isdigit() */
#include <signal.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include "c.h"
#include "strutils.h"
#include "signames.h"
static const struct ul_signal_name {
const char *name;
int val;
} ul_signames[] = {
/* POSIX signals */
{ "HUP", SIGHUP }, /* 1 */
{ "INT", SIGINT }, /* 2 */
{ "QUIT", SIGQUIT }, /* 3 */
{ "ILL", SIGILL }, /* 4 */
#ifdef SIGTRAP
{ "TRAP", SIGTRAP }, /* 5 */
#endif
{ "ABRT", SIGABRT }, /* 6 */
#ifdef SIGIOT
{ "IOT", SIGIOT }, /* 6, same as SIGABRT */
#endif
#ifdef SIGEMT
{ "EMT", SIGEMT }, /* 7 (mips,alpha,sparc*) */
#endif
#ifdef SIGBUS
{ "BUS", SIGBUS }, /* 7 (arm,i386,m68k,ppc), 10 (mips,alpha,sparc*) */
#endif
{ "FPE", SIGFPE }, /* 8 */
{ "KILL", SIGKILL }, /* 9 */
{ "USR1", SIGUSR1 }, /* 10 (arm,i386,m68k,ppc), 30 (alpha,sparc*), 16 (mips) */
{ "SEGV", SIGSEGV }, /* 11 */
{ "USR2", SIGUSR2 }, /* 12 (arm,i386,m68k,ppc), 31 (alpha,sparc*), 17 (mips) */
{ "PIPE", SIGPIPE }, /* 13 */
{ "ALRM", SIGALRM }, /* 14 */
{ "TERM", SIGTERM }, /* 15 */
#ifdef SIGSTKFLT
{ "STKFLT", SIGSTKFLT }, /* 16 (arm,i386,m68k,ppc) */
#endif
{ "CHLD", SIGCHLD }, /* 17 (arm,i386,m68k,ppc), 20 (alpha,sparc*), 18 (mips) */
#ifdef SIGCLD
{ "CLD", SIGCLD }, /* same as SIGCHLD (mips) */
#endif
{ "CONT", SIGCONT }, /* 18 (arm,i386,m68k,ppc), 19 (alpha,sparc*), 25 (mips) */
{ "STOP", SIGSTOP }, /* 19 (arm,i386,m68k,ppc), 17 (alpha,sparc*), 23 (mips) */
{ "TSTP", SIGTSTP }, /* 20 (arm,i386,m68k,ppc), 18 (alpha,sparc*), 24 (mips) */
{ "TTIN", SIGTTIN }, /* 21 (arm,i386,m68k,ppc,alpha,sparc*), 26 (mips) */
{ "TTOU", SIGTTOU }, /* 22 (arm,i386,m68k,ppc,alpha,sparc*), 27 (mips) */
#ifdef SIGURG
{ "URG", SIGURG }, /* 23 (arm,i386,m68k,ppc), 16 (alpha,sparc*), 21 (mips) */
#endif
#ifdef SIGXCPU
{ "XCPU", SIGXCPU }, /* 24 (arm,i386,m68k,ppc,alpha,sparc*), 30 (mips) */
#endif
#ifdef SIGXFSZ
{ "XFSZ", SIGXFSZ }, /* 25 (arm,i386,m68k,ppc,alpha,sparc*), 31 (mips) */
#endif
#ifdef SIGVTALRM
{ "VTALRM", SIGVTALRM }, /* 26 (arm,i386,m68k,ppc,alpha,sparc*), 28 (mips) */
#endif
#ifdef SIGPROF
{ "PROF", SIGPROF }, /* 27 (arm,i386,m68k,ppc,alpha,sparc*), 29 (mips) */
#endif
#ifdef SIGWINCH
{ "WINCH", SIGWINCH }, /* 28 (arm,i386,m68k,ppc,alpha,sparc*), 20 (mips) */
#endif
#ifdef SIGIO
{ "IO", SIGIO }, /* 29 (arm,i386,m68k,ppc), 23 (alpha,sparc*), 22 (mips) */
#endif
#ifdef SIGPOLL
{ "POLL", SIGPOLL }, /* same as SIGIO */
#endif
#ifdef SIGINFO
{ "INFO", SIGINFO }, /* 29 (alpha) */
#endif
#ifdef SIGLOST
{ "LOST", SIGLOST }, /* 29 (arm,i386,m68k,ppc,sparc*) */
#endif
#ifdef SIGPWR
{ "PWR", SIGPWR }, /* 30 (arm,i386,m68k,ppc), 29 (alpha,sparc*), 19 (mips) */
#endif
#ifdef SIGUNUSED
{ "UNUSED", SIGUNUSED }, /* 31 (arm,i386,m68k,ppc) */
#endif
#ifdef SIGSYS
{ "SYS", SIGSYS }, /* 31 (mips,alpha,sparc*) */
#endif
};
#ifdef SIGRTMIN
static int rtsig_to_signum(const char *sig)
{
int num, maxi = 0;
char *ep = NULL;
if (strncasecmp(sig, "min+", 4) == 0)
sig += 4;
else if (strncasecmp(sig, "max-", 4) == 0) {
sig += 4;
maxi = 1;
}
if (!isdigit(*sig))
return -1;
errno = 0;
num = strtol(sig, &ep, 10);
if (!ep || sig == ep || errno || num < 0)
return -1;
num = maxi ? SIGRTMAX - num : SIGRTMIN + num;
if (num < SIGRTMIN || SIGRTMAX < num)
return -1;
return num;
}
#endif
int signame_to_signum(const char *sig)
{
size_t n;
if (!strncasecmp(sig, "sig", 3))
sig += 3;
#ifdef SIGRTMIN
/* RT signals */
if (!strncasecmp(sig, "rt", 2))
return rtsig_to_signum(sig + 2);
#endif
/* Normal signals */
for (n = 0; n < ARRAY_SIZE(ul_signames); n++) {
if (!strcasecmp(ul_signames[n].name, sig))
return ul_signames[n].val;
}
return -1;
}
const char *signum_to_signame(int signum)
{
size_t n;
for (n = 0; n < ARRAY_SIZE(ul_signames); n++) {
if (ul_signames[n].val == signum) {
return ul_signames[n].name;
}
}
return NULL;
}
int get_signame_by_idx(size_t idx, const char **signame, int *signum)
{
if (idx >= ARRAY_SIZE(ul_signames))
return -1;
if (signame)
*signame = ul_signames[idx].name;
if (signum)
*signum = ul_signames[idx].val;
return 0;
}