Merging upstream version 6.8.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 0 insertions, 141 deletions

diff --git a/man3/getenv.3 b/man3/getenv.3
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-'\" t
-.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk)
-.\" and Copyright (C) 2007, 2012 Michael Kerrisk <mtk.manpages@gmail.com>
-.\"
-.\" SPDX-License-Identifier: Linux-man-pages-copyleft
-.\"
-.\" References consulted:
-.\"     Linux libc source code
-.\"     Lewine's "POSIX Programmer's Guide" (O'Reilly & Associates, 1991)
-.\"     386BSD man pages
-.\" Modified Sat Jul 24 19:30:29 1993 by Rik Faith (faith@cs.unc.edu)
-.\" Modified Fri Feb 14 21:47:50 1997 by Andries Brouwer (aeb@cwi.nl)
-.\"
-.TH getenv 3 2023-10-31 "Linux man-pages 6.7"
-.SH NAME
-getenv, secure_getenv \- get an environment variable
-.SH LIBRARY
-Standard C library
-.RI ( libc ", " \-lc )
-.SH SYNOPSIS
-.nf
-.B #include <stdlib.h>
-.P
-.BI "char *getenv(const char *" name );
-.BI "char *secure_getenv(const char *" name );
-.fi
-.P
-.RS -4
-Feature Test Macro Requirements for glibc (see
-.BR feature_test_macros (7)):
-.RE
-.P
-.BR secure_getenv ():
-.nf
-    _GNU_SOURCE
-.fi
-.SH DESCRIPTION
-The
-.BR getenv ()
-function searches the environment list to find the
-environment variable
-.IR name ,
-and returns a pointer to the corresponding
-.I value
-string.
-.P
-The GNU-specific
-.BR secure_getenv ()
-function is just like
-.BR getenv ()
-except that it returns NULL in cases where "secure execution" is required.
-Secure execution is required if one of the following conditions
-was true when the program run by the calling process was loaded:
-.IP \[bu] 3
-the process's effective user ID did not match its real user ID or
-the process's effective group ID did not match its real group ID
-(typically this is the result of executing a set-user-ID or
-set-group-ID program);
-.IP \[bu]
-the effective capability bit was set on the executable file; or
-.IP \[bu]
-the process has a nonempty permitted capability set.
-.P
-Secure execution may also be required if triggered
-by some Linux security modules.
-.P
-The
-.BR secure_getenv ()
-function is intended for use in general-purpose libraries
-to avoid vulnerabilities that could occur if
-set-user-ID or set-group-ID programs accidentally
-trusted the environment.
-.SH RETURN VALUE
-The
-.BR getenv ()
-function returns a pointer to the value in the
-environment, or NULL if there is no match.
-.SH ATTRIBUTES
-For an explanation of the terms used in this section, see
-.BR attributes (7).
-.TS
-allbox;
-lbx lb lb
-l l l.
-Interface	Attribute	Value
-T{
-.na
-.nh
-.BR getenv (),
-.BR secure_getenv ()
-T}	Thread safety	MT-Safe env
-.TE
-.SH STANDARDS
-.TP
-.BR getenv ()
-C11, POSIX.1-2008.
-.TP
-.BR secure_getenv ()
-GNU.
-.SH HISTORY
-.TP
-.BR getenv ()
-POSIX.1-2001, C89, C99, SVr4, 4.3BSD.
-.TP
-.BR secure_getenv ()
-glibc 2.17.
-.SH NOTES
-The strings in the environment list are of the form \fIname=value\fP.
-.P
-As typically implemented,
-.BR getenv ()
-returns a pointer to a string within the environment list.
-The caller must take care not to modify this string,
-since that would change the environment of the process.
-.P
-The implementation of
-.BR getenv ()
-is not required to be reentrant.
-The string pointed to by the return value of
-.BR getenv ()
-may be statically allocated,
-and can be modified by a subsequent call to
-.BR getenv (),
-.BR putenv (3),
-.BR setenv (3),
-or
-.BR unsetenv (3).
-.P
-The "secure execution" mode of
-.BR secure_getenv ()
-is controlled by the
-.B AT_SECURE
-flag contained in the auxiliary vector passed from the kernel to user space.
-.SH SEE ALSO
-.BR clearenv (3),
-.BR getauxval (3),
-.BR putenv (3),
-.BR setenv (3),
-.BR unsetenv (3),
-.BR capabilities (7),
-.BR environ (7)