eb0a43f4cf
By left-aligned display, the effect is as follows (0, 1, 2 is fd information, 3 is sd information)
FD OFLAGS TYPE POS PATH
0 3 1 0 /dev/console
1 3 1 0 /dev/console
2 3 1 0 /dev/console
3 65 2
Signed-off-by: chenrun1 <chenrun1@xiaomi.com>
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||
|---|---|---|
| .. | ||
| CMakeLists.txt | ||
| fs_procfs.c | ||
| fs_procfscpuinfo.c | ||
| fs_procfscpuload.c | ||
| fs_procfscritmon.c | ||
| fs_procfsiobinfo.c | ||
| fs_procfsmeminfo.c | ||
| fs_procfsproc.c | ||
| fs_procfstcbinfo.c | ||
| fs_procfsuptime.c | ||
| fs_procfsutil.c | ||
| fs_procfsversion.c | ||
| fs_skeleton.c | ||
| Kconfig | ||
| Make.defs | ||
| 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