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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 19:41:07 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 19:41:07 +0000 |
commit | 3af6d22bb3850ab2bac67287e3a3d3b0e32868e5 (patch) | |
tree | 3ee7a3ec64525911fa865bb984c86d997d855527 /man5/proc_pid_environ.5 | |
parent | Adding debian version 6.05.01-1. (diff) | |
download | manpages-3af6d22bb3850ab2bac67287e3a3d3b0e32868e5.tar.xz manpages-3af6d22bb3850ab2bac67287e3a3d3b0e32868e5.zip |
Merging upstream version 6.7.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | man5/proc_pid_environ.5 | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/man5/proc_pid_environ.5 b/man5/proc_pid_environ.5 new file mode 100644 index 0000000..104cbe0 --- /dev/null +++ b/man5/proc_pid_environ.5 @@ -0,0 +1,48 @@ +.\" Copyright (C) 1994, 1995, Daniel Quinlan <quinlan@yggdrasil.com> +.\" Copyright (C) 2002-2008, 2017, Michael Kerrisk <mtk.manpages@gmail.com> +.\" Copyright (C) 2023, Alejandro Colomar <alx@kernel.org> +.\" +.\" SPDX-License-Identifier: GPL-3.0-or-later +.\" +.TH proc_pid_environ 5 2023-08-15 "Linux man-pages 6.7" +.SH NAME +/proc/pid/environ \- initial environment +.SH DESCRIPTION +.TP +.IR /proc/ pid /environ +This file contains the initial environment that was set +when the currently executing program was started via +.BR execve (2). +The entries are separated by null bytes (\[aq]\e0\[aq]), +and there may be a null byte at the end. +Thus, to print out the environment of process 1, you would do: +.IP +.in +4n +.EX +.RB "$" " cat /proc/1/environ | tr \[aq]\e000\[aq] \[aq]\en\[aq]" +.EE +.in +.IP +If, after an +.BR execve (2), +the process modifies its environment +(e.g., by calling functions such as +.BR putenv (3) +or modifying the +.BR environ (7) +variable directly), +this file will +.I not +reflect those changes. +.IP +Furthermore, a process may change the memory location that this file refers via +.BR prctl (2) +operations such as +.BR PR_SET_MM_ENV_START . +.IP +Permission to access this file is governed by a ptrace access mode +.B PTRACE_MODE_READ_FSCREDS +check; see +.BR ptrace (2). +.SH SEE ALSO +.BR proc (5) |