nuttx

History

Xiang Xiao b0a0ba3ad7 fs: Move mmap callback before truncate in [file\|mountpt]_operations since mmap may exist in block_operations, but truncate may not, moving mmap beforee truncate could make three struct more compatible Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>		2023-01-04 17:43:59 +02:00
..
fs_procfs.c	fs: Move mmap callback before truncate in [file\|mountpt]_operations	2023-01-04 17:43:59 +02:00
fs_procfscpuload.c
fs_procfscritmon.c
fs_procfsiobinfo.c
fs_procfsmeminfo.c	procmeminfo:support memdump can show specific task	2022-12-19 20:43:33 +08:00
fs_procfsproc.c
fs_procfstcbinfo.c
fs_procfsuptime.c	fs/procfs: Avoid the cast in uptime_read	2022-12-24 11:26:48 -03:00
fs_procfsutil.c
fs_procfsversion.c
fs_skeleton.c
Kconfig
Make.defs
README.txt

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