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nuttx/fs/procfs
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Gregory Nutt e4652bd3dc Squashed commit of the following: 
fs: Add truncate() support for userfs
    fs/unionfs:  Add truncate() support to the unionfs
    fs/tmpfs:  Add ftruncate() support to tmpfs
    syscall/: Add system call support for ftruncate()
    net/route:  Adding ftruncate() support eliminates an issue in file-based routing table management.
    fs:  Add basic framework to support truncate() and ftruncate().  The infrastructure is complete.  Now, however, the actual implementation of ftruncate() will have to be done for each file system.
2018-01-03 16:03:56 -06:00
..
fs_procfs.c Squashed commit of the following: 2018-01-03 16:03:56 -06:00
fs_procfscpuload.c procfs: Most stat() implementations were not initializating the st_atime, st_ctime, and st_mtime fields. 2017-02-15 09:59:09 -06:00
fs_procfsmeminfo.c procfs: Fix error in /proc/meminfo format statement introduced with recent commit. 2017-11-23 08:07:20 -06:00
fs_procfsproc.c Add file missed in last commit. Fix naming in some configuration items. 2017-08-12 07:26:20 -06:00
fs_procfsuptime.c procfs: Fix uptime being close to maximum 32-bit value in certain config 2017-11-10 09:01:39 -06:00
fs_procfsutil.c Remove some block comments before empty code sections 2016-04-11 18:16:04 -06:00
fs_skeleton.c procfs skeleton: Some additional, purely cosmetic updates. 2017-02-15 12:47:51 -06:00
Kconfig fs/procfs: Optimization of previous commits. /proc/umm and proc/progmem are deleted. /proc/kmm is renamed /proc/meminfo and contains the output that was in all three files previously. 2017-11-13 13:33:12 -06:00
Make.defs fs/procfs: Optimization of previous commits. /proc/umm and proc/progmem are deleted. /proc/kmm is renamed /proc/meminfo and contains the output that was in all three files previously. 2017-11-13 13:33:12 -06:00
README.txt fs/binfs/README.txt: Add a README file 2013-11-13 16:40:03 -06:00

README.txt 

fs/procfs README
================

  This is a tiny procfs file system that allows read-only access to a few
  attributes of a task or thread.  This tiny procfs fs file system can be
  built into the system by enabling:

    CONFIG_FS_PROCFS=y

  It can then be mounted from the NSH command like like:

    nsh> mount -t procfs /proc

Example
=======

  NuttShell (NSH) NuttX-6.31
  nsh> mount -t procfs /proc

  nsh> ls /proc
  /proc:
   0/
   1/

  nsh> ls /proc/1
  /proc/1:
   status
   cmdline

  nsh> cat /proc/1/status
  Name:       init
  Type:       Task
  State:      Running
  Priority:   100
  Scheduler:  SCHED_FIFO
  SigMask:    00000000

  nsh> cat /proc/1/cmdline
  init

  nsh> sleep 100 &
  sleep [2:100]
  nsh> ls /proc
  ls /proc
  /proc:
   0/
   1/
   2/

  nsh> cat /proc/2/cmdline
  <pthread> 0x527420