[PATCH] proc.5: Inform that comm in /proc/pid/{stat,status} might also be truncated

From: Arkadiusz Drabczyk <arkadiusz@drabczyk.org>
To: mtk.manpages@gmail.com
Cc: linux-man@vger.kernel.org
Subject: [PATCH] proc.5: Inform that comm in /proc/pid/{stat,status} might also be truncated
Date: Wed, 17 Jun 2020 22:51:25 +0200	[thread overview]
Message-ID: <20200617205125.28163-1-arkadiusz@drabczyk.org> (raw)

pgrep for example searches for a process name in /proc/pid/status and
therefore cannot find processes whose names are longer than 15
characters unless -f is specified.

Signed-off-by: Arkadiusz Drabczyk <arkadiusz@drabczyk.org>
---
 man5/proc.5 | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/man5/proc.5 b/man5/proc.5
index 538c6c6..edaf281 100644
--- a/man5/proc.5
+++ b/man5/proc.5
@@ -2089,6 +2089,9 @@ The process ID.
 .TP
 (2) \fIcomm\fP \ %s
 The filename of the executable, in parentheses.
+Strings longer than
+.B TASK_COMM_LEN
+(16) characters (including the terminating null byte) are silently truncated.
 This is visible whether or not the executable is swapped out.
 .TP
 (3) \fIstate\fP \ %c
@@ -2504,6 +2507,9 @@ The fields are as follows:
 .IP * 2
 .IR Name :
 Command run by this process.
+Strings longer than
+.B TASK_COMM_LEN
+(16) characters (including the terminating null byte) are silently truncated.
 .IP *
 .IR Umask :
 Process umask, expressed in octal with a leading zero; see
-- 
2.9.0

