From 0527d29da443886d92e9a418180c5b25a5f8d270 Mon Sep 17 00:00:00 2001
From: deraadt <>
Date: Wed, 18 Oct 1995 08:42:23 +0000
Subject: initial import of NetBSD tree

---
 src/lib/libc/stdlib/getenv.c | 82 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 src/lib/libc/stdlib/getenv.c

(limited to 'src/lib/libc/stdlib/getenv.c')

diff --git a/src/lib/libc/stdlib/getenv.c b/src/lib/libc/stdlib/getenv.c
new file mode 100644
index 0000000000..09d47f2149
--- /dev/null
+++ b/src/lib/libc/stdlib/getenv.c
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 1987 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 = "from: @(#)getenv.c	5.8 (Berkeley) 2/23/91";*/
+static char *rcsid = "$Id: getenv.c,v 1.1.1.1 1995/10/18 08:42:17 deraadt Exp $";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdlib.h>
+#include <string.h>
+
+/*
+ * getenv --
+ *	Returns ptr to value associated with name, if any, else NULL.
+ */
+char *
+getenv(name)
+	const char *name;
+{
+	int offset;
+	char *__findenv();
+
+	return(__findenv(name, &offset));
+}
+
+/*
+ * __findenv --
+ *	Returns pointer to value associated with name, if any, else NULL.
+ *	Sets offset to be the offset of the name/value combination in the
+ *	environmental array, for use by setenv(3) and unsetenv(3).
+ *	Explicitly removes '=' in argument name.
+ *
+ *	This routine *should* be a static; don't use it.
+ */
+char *
+__findenv(name, offset)
+	register char *name;
+	int *offset;
+{
+	extern char **environ;
+	register int len;
+	register char **P, *C;
+
+	for (C = name, len = 0; *C && *C != '='; ++C, ++len);
+	for (P = environ; *P; ++P)
+		if (!strncmp(*P, name, len))
+			if (*(C = *P + len) == '=') {
+				*offset = P - environ;
+				return(++C);
+			}
+	return(NULL);
+}
-- 
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