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[RFC,v1,6/6] doc: proc: Add description of subset=allowlist

Message ID bd6f2882a63521a33d68e3f6dc1fb1e71c7c37d2.1674660533.git.legion@kernel.org (mailing list archive)
State New, archived
Headers show
Series proc: Add allowlist for procfs files | expand

Commit Message

Alexey Gladkov Jan. 25, 2023, 3:28 p.m. UTC 
Signed-off-by: Alexey Gladkov <legion@kernel.org>
---
 Documentation/filesystems/proc.rst | 10 ++++++++++
 1 file changed, 10 insertions(+)
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Patch

diff --git a/Documentation/filesystems/proc.rst b/Documentation/filesystems/proc.rst
index e224b6d5b642..c2598bca8193 100644
--- a/Documentation/filesystems/proc.rst
+++ b/Documentation/filesystems/proc.rst
@@ -2213,6 +2213,16 @@  information about processes information, just add identd to this group.
 subset=pid hides all top level files and directories in the procfs that
 are not related to tasks.
 
+subset=allowlist allows you to specify a list of files and directories to
+which you want to provide access. If the option is specified, then the
+/proc/allowlist will appear at the top level of the filesystem. By default, this
+file contains only its name. The user can add or remove other filenames and
+directories. To prohibit editing the allowlist, you need to exclude its name
+from the list of allowed ones.
+
+Different subset= option arguments can be combined using the plus(+) delimiter.
+For example: subset=pid+allowlist
+
 Chapter 5: Filesystem behavior
 ==============================