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authorUlrich Drepper <drepper@redhat.com>2001-01-27 08:32:08 +0000
committerUlrich Drepper <drepper@redhat.com>2001-01-27 08:32:08 +0000
commit0423ee1769597835b9219b4b7a0e2e02e9580d1c (patch)
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(Environment Access): Adjust comment about setenv() being BSD-only.
Diffstat (limited to 'manual/startup.texi')
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1 files changed, 9 insertions, 7 deletions
diff --git a/manual/startup.texi b/manual/startup.texi
index 526d19d..66c4a88 100644
--- a/manual/startup.texi
+++ b/manual/startup.texi
@@ -364,23 +364,25 @@ the old entry is replaced by the new one.
Please note that you cannot remove an entry completely using this function.
-This function is part of the BSD library. The GNU C Library provides
-this function for compatibility but it may not be available on other
-systems.
+This function was originally part of the BSD library but is now part of
+the Unix standard.
@end deftypefun
@comment stdlib.h
@comment BSD
-@deftypefun void unsetenv (const char *@var{name})
+@deftypefun int unsetenv (const char *@var{name})
Using this function one can remove an entry completely from the
environment. If the environment contains an entry with the key
@var{name} this whole entry is removed. A call to this function is
equivalent to a call to @code{putenv} when the @var{value} part of the
string is empty.
-This function is part of the BSD library. The GNU C Library provides
-this function for compatibility but it may not be available on other
-systems.
+The function return @code{-1} if @var{name} is a null pointer, points to
+an empty string, or points to a string containing a @code{=} character.
+It returns @code{0} if the call succeeded.
+
+This function was originall part of the BSD library but is now part of
+the Unix standard. The BSD version had no return value, though.
@end deftypefun
There is one more function to modify the whole environment. This