Add a strsignal(3) (like strerror(3)) for libc compatability with other

systems. NetBSD, Linux, SVR4 etc all have it.

1 files changed, 72 insertions, 0 deletions

diff --git a/lib/libc/string/strsignal.c b/lib/libc/string/strsignal.c
new file mode 100644
index 000000000000..5ec6365fbd93
--- /dev/null
+++ b/lib/libc/string/strsignal.c
@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 1988, 1993
+ *	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.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)strerror.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+#include <string.h>
+#include <signal.h>
+
+char *
+strsignal(num)
+	int num;
+{
+#define	UPREFIX	"Unknown signal: "
+	static char ebuf[40] = UPREFIX;		/* 64-bit number + slop */
+	register unsigned int signum;
+	register char *p, *t;
+	char tmp[40];
+
+	signum = num;				/* convert to unsigned */
+	if (signum < sys_nsig)
+		return ((char *)sys_siglist[signum]);
+
+	/* Do this by hand, so we don't link to stdio(3). */
+	t = tmp;
+	if (num < 0)
+		signum = -signum;
+	do {
+		*t++ = "0123456789"[signum % 10];
+	} while (signum /= 10);
+	if (num < 0)
+		*t++ = '-';
+	for (p = ebuf + sizeof(UPREFIX) - 1;;) {
+		*p++ = *--t;
+		if (t <= tmp)
+			break;
+	}
+	*p = '\0';
+	return (ebuf);
+}