1 files changed, 18 insertions, 35 deletions
diff --git a/lib/libc/stdlib/getenv.3 b/lib/libc/stdlib/getenv.3
index 9ebf30b..3d365f1 100644
--- a/lib/libc/stdlib/getenv.3
+++ b/lib/libc/stdlib/getenv.3
@@ -32,7 +32,7 @@
 .\"     @(#)getenv.3	8.2 (Berkeley) 12/11/93
 .\" $FreeBSD$
 .\"
-.Dd April 30, 2007
+.Dd October 12, 2006
 .Dt GETENV 3
 .Os
 .Sh NAME
@@ -50,13 +50,22 @@
 .Ft int
 .Fn setenv "const char *name" "const char *value" "int overwrite"
 .Ft int
-.Fn putenv "char *string"
-.Ft int
+.Fn putenv "const char *string"
+.Ft void
 .Fn unsetenv "const char *name"
 .Sh DESCRIPTION
 These functions set, unset and fetch environment variables from the
 host
 .Em environment list .
+For compatibility with differing environment conventions,
+the given arguments
+.Fa name
+and
+.Fa value
+may be appended and prepended,
+respectively,
+with an equal sign
+.Dq Li \&= .
 .Pp
 The
 .Fn getenv
@@ -88,18 +97,11 @@ to the given
 .Pp
 The
 .Fn putenv
-function takes an argument of the form ``name=value'' and
-puts it directly into the current environment,
-so altering the argument shall change the environment.
-If the variable
-.Fa name
-does not exist in the list,
-it is inserted with the given
-.Fa value .
-If the variable
-.Fa name
-does exist, it is reset to the given
-.Fa value .
+function takes an argument of the form ``name=value'' and is
+equivalent to:
+.Bd -literal -offset indent
+setenv(name, value, 1);
+.Ed
 .Pp
 The
 .Fn unsetenv
@@ -119,21 +121,9 @@ is not in the current environment,
 .Dv NULL
 is returned.
 .Pp
-.Rv -std setenv putenv unsetenv
+.Rv -std setenv putenv
 .Sh ERRORS
 .Bl -tag -width Er
-.It Bq Er EINVAL
-The function
-.Fn setenv
-or
-.Fn unsetenv
-failed because the
-.Fa name
-is a
-.Dv NULL
-pointer, points to an empty string, or points to a string containing an
-.Dq Li \&=
-character.
 .It Bq Er ENOMEM
 The function
 .Fn setenv
@@ -151,13 +141,6 @@ The
 .Fn getenv
 function conforms to
 .St -isoC .
-The
-.Fn setenv ,
-.Fn putenv
-and
-.Fn unsetenv
-functions conforms to
-.St -p1003.1-2001 .
 .Sh HISTORY
 The functions
 .Fn setenv