src/lib/libc/stdlib/getenv.3, branch release/14.4.0

libc: indicate existing functions that are POSIX 2024

2024-11-21T00:45:07Z

Reviewed by: brooks, imp Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D47581 (cherry picked from commit dfa0ac74c2fbc1cde3e8cdb1ab9fe5cbb90a9b16)

Remove $FreeBSD$: one-line nroff pattern

2023-08-16T17:55:15Z

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

secure_getenv: Improve documentation wording

2023-03-25T17:06:13Z

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

2023-03-14T04:19:24Z

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

2021-11-07T15:20:15Z

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

2013-05-28T20:57:40Z

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.

2012-05-11T20:06:46Z

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

Remove trailing whitespace per mdoc lint warning

2012-03-29T05:02:12Z

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

2009-12-06T23:51:27Z

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

2007-07-04T00:00:41Z

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)