src/lib/libc/stdlib/getenv.3, branch releng/14.0

Remove $FreeBSD$: one-line nroff pattern

2023-08-16T17:55:15+00:00

Remove /^\.\\"\s*\$FreeBSD\$$\n/

secure_getenv: Improve documentation wording

2023-03-25T17:06:13+00:00

Improve the documentation wording to be more consistent with FreeBSD
manual pages.

Suggested by:		mjg (though reworded)
Sponsored by:		Netflix

Add GNU glibc compatible secure_getenv

2023-03-14T04:19:24+00:00

Add mostly glibc and msl compatible secure_getenv. Return NULL if
issetugid() indicates the process is tainted, otherwise getenv(x).  The
rational behind this is the fact that many Linux applications use this
function instead of getenv() as it's widely consider a, "best
practice".

Reviewed by: imp, mjg (feedback)
Pull Request: https://github.com/freebsd/freebsd-src/pull/686
Signed-off-by: Lucy Marsh

libc: add clearenv function

2021-11-07T15:20:15+00:00

The clearenv(3) function allows us to clear all environment
variable in one shot. This may be useful for security programs that
want to control the environment or what variables are passed to new
spawned programs.

Reviewed by:	scf, markj (secteam), 0mp (manpages)
Differential Revision:	https://reviews.freebsd.org/D28223

Renumber clauses to reduce diffs to other versions

2013-05-28T20:57:40+00:00

NetBSD, OpenBSD, and Android's Bionic number the clauses 1 through 3,
so follow suit to make comparison easier.

General mdoc(7) and typo fixes.

2012-05-11T20:06:46+00:00

PR:		167734
Submitted by:	Nobuyuki Koganemaru (kogane!jp.freebsd.org)
MFC after:	3 days

Remove trailing whitespace per mdoc lint warning

2012-03-29T05:02:12+00:00

Disussed with:	gavin
No objection from:	doc
Approved by:	joel
MFC after:	3 days

Update the getenv(3) man page to reflect the recent change to the behavior

2009-12-06T23:51:27+00:00

of setenv(), putenv() and unsetenv() when dealing with corrupt entries in
environ.  They now output a warning and complete their task without error.

MFC after:	1 week

Significantly reduce the memory leak as noted in BUGS section for

2007-07-04T00:00:41+00:00

setenv(3) by tracking the size of the memory allocated instead of using
strlen() on the current value.

Convert all calls to POSIX from historic BSD API:
 - unsetenv returns an int.
 - putenv takes a char * instead of const char *.
 - putenv no longer makes a copy of the input string.
 - errno is set appropriately for POSIX.  Exceptions involve bad environ
   variable and internal initialization code.  These both set errno to
   EFAULT.

Several patches to base utilities to handle the POSIX changes from
Andrey Chernov's previous commit.  A few I re-wrote to use setenv()
instead of putenv().

New regression module for tools/regression/environ to test these
functions.  It also can be used to test the performance.

Bump __FreeBSD_version to 700050 due to API change.

PR:		kern/99826
Approved by:	wes
Approved by:	re (kensmith)

Back out all POSIXified *env() changes.

2007-05-01T16:02:44+00:00

Not because I admit they are technically wrong and not because of bug
reports (I receive nothing). But because I surprisingly meets so
strong opposition and resistance so lost any desire to continue that.

Anyone who interested in POSIX can dig out what changes and how
through cvs diffs.