lib/signames: remove signame array from header file

Signed-off-by: Karel Zak <kzak@redhat.com>

3 files changed, 129 insertions, 139 deletions

diff --git a/include/signames.h b/include/signames.h
index 633aeb3be..2096ad845 100644
--- a/include/signames.h
+++ b/include/signames.h
@@ -1,132 +1,9 @@
 #ifndef SIGNAMES_H
 #define SIGNAMES_H
 
-/*
- * 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 <signal.h>
-
-static const struct signv {
-	const char *name;
-	int val;
-} sys_signame[] = {
-	/* 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
-};
-
 int signame_to_signum(const char *sig);
+const char *signum_to_signame(int signum);
+size_t get_numof_signames(void);
+int get_signame_by_idx(size_t idx, const char **signame, int *signum);
 
 #endif /* SIGNAMES_H */
diff --git a/lib/signames.c b/lib/signames.c
index d64dee083..2c0be2447 100644
--- a/lib/signames.c
+++ b/lib/signames.c
@@ -40,7 +40,6 @@
  */
 
 #include <ctype.h>		/* for isdigit() */
-#include <signames.h>
 #include <signal.h>
 #include <unistd.h>
 #include <string.h>
@@ -48,7 +47,90 @@
 
 #include "c.h"
 #include "strutils.h"
+#include "signames.h"
 
+static const struct signv {
+	const char *name;
+	int val;
+} sys_signame[] = {
+	/* 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)
@@ -93,3 +175,35 @@ int signame_to_signum(const char *sig)
 	}
 	return -1;
 }
+
+const char *signum_to_signame(int signum)
+{
+	size_t n;
+
+	for (n = 0; n < ARRAY_SIZE(sys_signame); n++) {
+		if (sys_signame[n].val == signum) {
+			return sys_signame[n].name;
+		}
+	}
+
+	return NULL;
+}
+
+size_t get_numof_signames(void)
+{
+	return ARRAY_SIZE(sys_signame);
+}
+
+int get_signame_by_idx(size_t idx, const char **signame, int *signum)
+{
+	if (idx >= ARRAY_SIZE(sys_signame))
+		return -1;
+
+	if (signame)
+		*signame = sys_signame[idx].name;
+	if (signum)
+		*signum = sys_signame[idx].val;
+	return 0;
+
+}
+
diff --git a/misc-utils/kill.c b/misc-utils/kill.c
index 25a3b8874..726768bd1 100644
--- a/misc-utils/kill.c
+++ b/misc-utils/kill.c
@@ -85,13 +85,11 @@ struct kill_control {
 
 static void print_signal_name(int signum)
 {
-	size_t n;
+	const char *name = signum_to_signame(signum);
 
-	for (n = 0; n < ARRAY_SIZE(sys_signame); n++) {
-		if (sys_signame[n].val == signum) {
-			printf("%s\n", sys_signame[n].name);
-			return;
-		}
+	if (name) {
+		printf("%s\n", name);
+		return;
 	}
 #ifdef SIGRTMIN
 	if (SIGRTMIN <= signum && signum <= SIGRTMAX) {
@@ -116,17 +114,19 @@ static void pretty_print_signal(FILE *fp, size_t term_width, size_t *lpos,
 static void print_all_signals(FILE *fp, int pretty)
 {
 	size_t n, lth, lpos = 0, width;
+	const char *signame = NULL;
+	int signum = 0;
 
 	if (!pretty) {
-		for (n = 0; n < ARRAY_SIZE(sys_signame); n++) {
-			lth = 1 + strlen(sys_signame[n].name);
+		for (n = 0; get_signame_by_idx(n, &signame, NULL) == 0; n++) {
+			lth = 1 + strlen(signame);
 			if (KILL_OUTPUT_WIDTH < lpos + lth) {
 				fputc('\n', fp);
 				lpos = 0;
 			} else if (lpos)
 				fputc(' ', fp);
 			lpos += lth;
-			fputs(sys_signame[n].name, fp);
+			fputs(signame, fp);
 		}
 #ifdef SIGRTMIN
 		fputs(" RT<N> RTMIN+<N> RTMAX-<N>", fp);
@@ -137,9 +137,8 @@ static void print_all_signals(FILE *fp, int pretty)
 
 	/* pretty print */
 	width = get_terminal_width(KILL_OUTPUT_WIDTH + 1) - 1;
-	for (n = 0; n < ARRAY_SIZE(sys_signame); n++)
-		pretty_print_signal(fp, width, &lpos,
-				    sys_signame[n].val, sys_signame[n].name);
+	for (n = 0; get_signame_by_idx(n, &signame, &signum) == 0; n++)
+		pretty_print_signal(fp, width, &lpos, signum, signame);
 #ifdef SIGRTMIN
 	pretty_print_signal(fp, width, &lpos, SIGRTMIN, "RTMIN");
 	pretty_print_signal(fp, width, &lpos, SIGRTMAX, "RTMAX");