--- Libc/Libc-1725.40.4/stdlib/FreeBSD/getenv.c
+++ Libc/Libc-583/stdlib/FreeBSD/getenv.c
@@ -10,6 +10,10 @@
  * 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.
@@ -31,21 +35,16 @@
 static char sccsid[] = "@(#)getenv.c	8.1 (Berkeley) 6/4/93";
 #endif /* LIBC_SCCS and not lint */
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD: src/lib/libc/stdlib/getenv.c,v 1.8 2007/05/01 16:02:41 ache Exp $");
+__FBSDID("$FreeBSD: src/lib/libc/stdlib/getenv.c,v 1.4 2002/03/21 22:48:41 obrien Exp $");
 
-#include <errno.h>
-#include <os/lock_private.h>
 #include <stdlib.h>
 #include <stddef.h>
 #include <string.h>
-#include <crt_externs.h>
 
-#include "libc_private.h"
-
-__private_extern__ char *__findenv_locked(const char *, int *, char **);
+inline char *__findenv(const char *, int *);
 
 /*
- * __findenv_locked --
+ * __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).
@@ -53,9 +52,12 @@
  *
  *	This routine *should* be a static; don't use it.
  */
-__private_extern__ char *
-__findenv_locked(const char *name, int *offset, char **environ)
+inline char *
+__findenv(name, offset)
+	const char *name;
+	int *offset;
 {
+	extern char **environ;
 	int len, i;
 	const char *np;
 	char **p, *cp;
@@ -77,118 +79,15 @@
 	return (NULL);
 }
 
-static os_unfair_lock __environ_lock_obj = OS_UNFAIR_LOCK_INIT;
-void
-environ_lock_np(void)
-{
-	os_unfair_lock_lock_with_options(
-			&__environ_lock_obj, OS_UNFAIR_LOCK_DATA_SYNCHRONIZATION);
-}
-void
-environ_unlock_np(void)
-{
-	os_unfair_lock_unlock(&__environ_lock_obj);
-}
-__private_extern__ void
-__environ_lock_fork_child(void)
-{
-	__environ_lock_obj = OS_UNFAIR_LOCK_INIT;
-}
-
-/*
- * _getenvp -- SPI using an arbitrary pointer to string array (the array must
- * have been created with malloc) and an env state, created by _allocenvstate().
- *	Returns ptr to value associated with name, if any, else NULL.
- */
-char *
-_getenvp(const char *name, char ***envp, void *state __unused)
-{
-	// envp is passed as an argument, so the lock is not protecting everything
-	int offset;
-	environ_lock_np();
-	char *result = (__findenv_locked(name, &offset, *envp));
-	environ_unlock_np();
-	return result;
-}
-
 /*
  * getenv --
  *	Returns ptr to value associated with name, if any, else NULL.
  */
 char *
-getenv(const char *name)
+getenv(name)
+	const char *name;
 {
 	int offset;
-	environ_lock_np();
-	char *result = __findenv_locked(name, &offset, *_NSGetEnviron());
-	environ_unlock_np();
-	return result;
+
+	return (__findenv(name, &offset));
 }
-
-/*
- * getenv_copy_np --
- *	Returns ptr to copy of value associated with name, if any, else NULL.
- *	Caller is responsible for freeing the return value.
- *	Sets errno == ENOMEM and returns NULL if memory allocation fails.
- *	Sets errno == EAGAIN and returns NULL if 5 attempts to copy the
- *	string fails.
- */
-char *
-getenv_copy_np(const char *name)
-{
-	/*
-	 * malloc() calls getenv() (which takes the environ_lock_np()), so
-	 * strdup() can not be called with environ_lock_np() held. Instead,
-	 * perform a two-step check for the length of the value (under lock),
-	 * then allocate a buffer, then try to copy the value into the buffer
-	 * (under lock). If the value of the environment variable changed such
-	 * that it no longer fits in the buffer, then try again up to four more
-	 * times. This algorithm is prescribed when using getenv_s() (ISO-C
-	 * Annex K), so this function abstracts that from the user since it is
-	 * difficult to implement correctly.
-	 */
-	unsigned attempts = 0;
-	char *result_buffer = NULL;
-	size_t result_buffer_length = 0;
-	int unused_offset;
-	char *value;
-	size_t value_length;
-
-	/* 1. Get the length of the value. */
-	environ_lock_np();
-	value = __findenv_locked(name, &unused_offset, *_NSGetEnviron());
-	value_length = value ? strlen(value) : 0;
-	environ_unlock_np();
-
-	if (!value)
-		return NULL;
-
-	do {
-		if (++attempts > 5) {
-			errno = EAGAIN;
-			return NULL;
-		}
-
-		/* 2. Allocate a buffer for the copy.  Round up to nearest/next 16 bytes. */
-		result_buffer_length = value_length + 1;
-		result_buffer_length += (16 - (result_buffer_length % 16));
-		result_buffer = (char *)reallocf((void *)result_buffer, result_buffer_length);
-		if (result_buffer == NULL) {
-			/* reallocf() sets errno = ENOMEM on failure. */
-			return NULL;
-		}
-
-		/* 3. Get the variable again and make a copy. */
-		environ_lock_np();
-		value = __findenv_locked(name, &unused_offset, *_NSGetEnviron());
-		value_length = value ? strlcpy(result_buffer, value, result_buffer_length) : 0;
-		environ_unlock_np();
-
-		if (!value)
-			return NULL;
-
-		/* 4. If value was too long for buffer, try again. */
-	} while (value_length >= result_buffer_length);
-
-	return result_buffer;
-}