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From: Utkarsh Verma <utkarshverma294@gmail.com>
To: Dwaipayan Ray <dwaipayanray1@gmail.com>
Cc: Lukas Bulwahn <lukas.bulwahn@gmail.com>,
	Joe Perches <joe@perches.com>, Jonathan Corbet <corbet@lwn.net>,
	linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
	Utkarsh Verma <utkarshverma294@gmail.com>
Subject: [PATCH v2] Documentation: checkpatch: Add SYMBOLIC_PERMS message
Date: Sat,  4 Sep 2021 13:53:30 +0530	[thread overview]
Message-ID: <20210904082330.14864-1-utkarshverma294@gmail.com> (raw)
In-Reply-To: <CAKXUXMyRKM9Ev_Yyyup-T=AZe2aYcN-ZneXsLmHtUC7as67zNQ@mail.gmail.com>

Add a new message type SYMBOLIC_PERMS under the 'Permissions'
subsection. Octal permission bits are easier to read and understand
instead of their symbolic macro names.

Suggested-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Utkarsh Verma <utkarshverma294@gmail.com>
Acked-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Reviewed-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
---
 Documentation/dev-tools/checkpatch.rst | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/Documentation/dev-tools/checkpatch.rst b/Documentation/dev-tools/checkpatch.rst
index f0956e9ea2d8..41037594ec24 100644
--- a/Documentation/dev-tools/checkpatch.rst
+++ b/Documentation/dev-tools/checkpatch.rst
@@ -957,6 +957,17 @@ Permissions
     Permission bits should use 4 digit octal permissions (like 0700 or 0444).
     Avoid using any other base like decimal.
 
+  **SYMBOLIC_PERMS**
+    Permission bits in the octal form are more readable and easier to
+    understand than their symbolic counterparts because many command-line
+    tools use this notation only. Experienced kernel developers have been using
+    this traditional Unix permission bits for decades and so they find it
+    easier to understand the octal notation than the symbolic macros.
+    For example, it is harder to read S_IWUSR|S_IRUGO than 0644, which
+    obscures the developer's intent rather than clarifying it.
+
+    See: https://lore.kernel.org/lkml/CA+55aFw5v23T-zvDZp-MmD_EYxF8WbafwwB59934FV7g21uMGQ@mail.gmail.com/
+
 
 Spacing and Brackets
 --------------------
-- 
2.25.1


  reply	other threads:[~2021-09-04  8:24 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-04  7:29 [PATCH] " Utkarsh Verma
2021-09-04  7:46 ` Lukas Bulwahn
2021-09-04  8:23   ` Utkarsh Verma [this message]
2021-09-09 17:02     ` [PATCH v2] " Dwaipayan Ray
2021-09-14 21:10       ` Jonathan Corbet
2021-09-14 22:28         ` Dwaipayan Ray

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