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Message-Id: <20220220163047.117864-1-hwe.kernel@gmail.com>
Date: Sun, 20 Feb 2022 17:30:47 +0100
From: Hans Weber <hwe.kernel@...il.com>
To: linux-kernel@...r.kernel.org
Cc: Hans Weber <hwe.kernel@...il.com>
Subject: [PATCH 3/3] patch : first example not showing umask field from Table 1-2
Signe-off-by: Hans Weber <hwe.kernel@...il.com>
---
Documentation/filesystems/proc.rst | 105 ++++++++++++++++-------------
1 file changed, 58 insertions(+), 47 deletions(-)
diff --git a/Documentation/filesystems/proc.rst b/Documentation/filesystems/proc.rst
index b9d1c6764266..40ca0f9087db 100644
--- a/Documentation/filesystems/proc.rst
+++ b/Documentation/filesystems/proc.rst
@@ -138,7 +138,7 @@ usually fail with ESRCH.
/proc (as of 5.10.0)
======================================================================================
- Name T Content
+ Name T Content
======================================================================================
arch_status f Task architecture specific information
attr d API for security modules
@@ -213,52 +213,63 @@ usually fail with ESRCH.
For example, to get the status information of a process, all you have to do is
read the file /proc/PID/status::
- >cat /proc/self/status
- Name: cat
- State: R (running)
- Tgid: 5452
- Pid: 5452
- PPid: 743
- TracerPid: 0 (2.4)
- Uid: 501 501 501 501
- Gid: 100 100 100 100
- FDSize: 256
- Groups: 100 14 16
- VmPeak: 5004 kB
- VmSize: 5004 kB
- VmLck: 0 kB
- VmHWM: 476 kB
- VmRSS: 476 kB
- RssAnon: 352 kB
- RssFile: 120 kB
- RssShmem: 4 kB
- VmData: 156 kB
- VmStk: 88 kB
- VmExe: 68 kB
- VmLib: 1412 kB
- VmPTE: 20 kb
- VmSwap: 0 kB
- HugetlbPages: 0 kB
- CoreDumping: 0
- THP_enabled: 1
- Threads: 1
- SigQ: 0/28578
- SigPnd: 0000000000000000
- ShdPnd: 0000000000000000
- SigBlk: 0000000000000000
- SigIgn: 0000000000000000
- SigCgt: 0000000000000000
- CapInh: 00000000fffffeff
- CapPrm: 0000000000000000
- CapEff: 0000000000000000
- CapBnd: ffffffffffffffff
- CapAmb: 0000000000000000
- NoNewPrivs: 0
- Seccomp: 0
- Speculation_Store_Bypass: thread vulnerable
- SpeculationIndirectBranch: conditional enabled
- voluntary_ctxt_switches: 0
- nonvoluntary_ctxt_switches: 1
+>cat /proc/self/status
+Name: cat
+Umask: 0022
+State: R (running)
+Tgid: 19633
+Ngid: 0
+Pid: 19633
+PPid: 13898
+TracerPid: 0
+Uid: 1000 1000 1000 1000
+Gid: 1000 1000 1000 1000
+FDSize: 256
+Groups: 24 25 27 29 30 44 46 108 113 114 119 1000
+NStgid: 19633
+NSpid: 19633
+NSpgid: 19633
+NSsid: 13898
+VmPeak: 5440 kB
+VmSize: 5440 kB
+VmLck: 0 kB
+VmPin: 0 kB
+VmHWM: 520 kB
+VmRSS: 520 kB
+RssAnon: 68 kB
+RssFile: 452 kB
+RssShmem: 0 kB
+VmData: 316 kB
+VmStk: 132 kB
+VmExe: 20 kB
+VmLib: 1460 kB
+VmPTE: 44 kB
+VmSwap: 0 kB
+HugetlbPages: 0 kB
+CoreDumping: 0
+THP_enabled: 1
+Threads: 1
+SigQ: 0/47433
+SigPnd: 0000000000000000
+ShdPnd: 0000000000000000
+SigBlk: 0000000000000000
+SigIgn: 0000000000000000
+SigCgt: 0000000000000000
+CapInh: 0000000000000000
+CapPrm: 0000000000000000
+CapEff: 0000000000000000
+CapBnd: 000001ffffffffff
+CapAmb: 0000000000000000
+NoNewPrivs: 0
+Seccomp: 0
+Seccomp_filters: 0
+Speculation_Store_Bypass: vulnerable
+Cpus_allowed: ff
+Cpus_allowed_list: 0-7
+Mems_allowed: 00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000001
+Mems_allowed_list: 0
+voluntary_ctxt_switches: 0
+nonvoluntary_ctxt_switches: 0
This shows you nearly the same information you would get if you viewed it with
the ps command. In fact, ps uses the proc file system to obtain its
--
2.30.2
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