/* vi: set sw=4 ts=4: */
-/* Copyright (C) 2000 Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
- * This file is part of the uClinux and is distributed under the
- * GNU Library General Public License.
+/* strsignal for uClibc
+ *
+ * Copyright (C) 2000,2001 by Erik Andersen <andersen@uclibc.org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
-#include <string.h>
+/*
+ * Manuel Novoa III Dec 2000
+ *
+ * Converted to use my new (un)signed long (long) to string routines, which
+ * are smaller than the previous functions and don't require static buffers.
+ * Removed dependence on strcat in the process.
+ *
+ * Also fixed a bug in the signal name lookup code. While the table is
+ * declared with dimension > 60, there are currently on 32 signals listed.
+ *
+ * Also appended a test routine ( -DCHECK_BUF ) to allow a quick check
+ * on the buffer length and the number of known signals when the sys_errorlist
+ * is modified.
+ *
+ * Added the option WANT_SIGLIST for low-memory applications to omit the
+ * signal message strings and only output the signal number.
+ */
+
+#define WANT_SIGLIST 1
+#include <stdlib.h>
#include <malloc.h>
#include <signal.h>
+#include <limits.h>
+#define __USE_GNU
+#include <string.h>
-extern char *itoa(int i);
+#if (INT_MAX >> 31)
+/* We're set up for 32 bit ints */
+#error need to check size allocation for static buffer 'retbuf'
+#endif
+
+extern char *__ltostr(char *buf, long uval, int base, int uppercase);
+
+/********************** Function strsignal ************************************/
+#ifdef L_strsignal
+
+#if WANT_SIGLIST
const char *const sys_siglist[] = {
"Unknown signal",
NULL
};
-/********************** Function strsignal ************************************/
+#endif
+
+#define NUM_KNOWN_SIGNALS 32
+
+static char retbuf[28]; /* 28 is sufficient for 32 bit ints */
+static const char unknown_signal[] = "Unknown Signal:";
char *strsignal(int sig)
{
- static char retbuf[80];
+ char *pos;
- if (sys_siglist) {
- if (sig < 0 || sig >= _NSIG)
- goto unknown;
+#ifdef WANT_SIGLIST
+ /* if ((sig >= 0) && (sig < _NSIG)) { */
+ /* WARNING!!! NOT ALL _NSIG DEFINED!!! */
+ if ((sig >= 0) && (sig < NUM_KNOWN_SIGNALS)) {
strcpy(retbuf, sys_siglist[sig]);
return retbuf;
}
+#endif
+
+ pos = __ltostr(retbuf + sizeof(unknown_signal) + 1, sig, 10, 0)
+ - sizeof(unknown_signal);
+ strcpy(pos, unknown_signal);
+ *(pos + sizeof(unknown_signal) - 1) = ' ';
+ return pos;
+}
- if (sig <= 0)
- goto unknown;
+#endif
+/********************** Function psignal ************************************/
+#ifdef L_psignal
- unknown:
- strcpy(retbuf, "Unknown Signal: ");
- strcat(retbuf, (char *) itoa(sig));
- return retbuf;
+#include <stdio.h>
+
+void psignal(int sig, const char *s)
+{
+ fprintf(stderr, "%s: %s\n", s, strsignal(sig));
}
+#endif
/********************** THE END ********************************************/
+
+#ifdef CHECK_BUF
+/* quick way to check for sufficient buffer length */
+#include <stdio.h>
+#include <stdlib.h>
+int main(void)
+{
+ int max = 0;
+ int j, retcode;
+
+ const char *p;
+#if WANT_SIGLIST
+ int i;
+#endif
+ retcode = EXIT_SUCCESS;
+
+#if WANT_SIGLIST
+ /*printf("_NSIG = %d from headers\n", _NSIG);*/
+ for ( i=0 ; sys_siglist[i] ; i++ ) {
+ j = strlen(sys_siglist[i])+1;
+ if (j > max) max = j;
+ }
+ if (i != NUM_KNOWN_SIGNALS) {
+ printf("Error: strsignal.c - NUM_KNOWN_SIGNALS should be %d\n", i);
+ retcode = EXIT_FAILURE;
+ }
+#endif
+
+ p = strsignal(INT_MIN);
+ j = strlen(p)+1;
+ if (j > max) max = j;
+ /*printf("strsignal.c - Test of INT_MIN: <%s> %d\n", p, j);*/
+
+ if (sizeof(retbuf) != max) {
+ printf("Error: strsignal.c - dimension of retbuf should be = %d\n", max);
+ retcode = EXIT_FAILURE;
+ }
+ /*printf("strsignal.c - dimension of retbuf correct at %d\n", max);*/
+ printf("Passed.\n");
+
+ return retcode;
+}
+#endif
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