The Linux process file system, or
,
emulates a subset of Linux' process file system and is required for
the complete operation of some Linux binaries.
The
provides a two-level view of process space.
At the highest level, processes themselves are named, according to
their process ids in decimal, with no leading zeros.
There is also a special node called
self
which always refers to the process making the lookup request.
Each node is a directory containing several files:
exe
A reference to the vnode from which the process text was read.
This can be used to gain access to the process' symbol table,
or to start another copy of the process.
mem
The complete virtual memory image of the process.
Only those addresses which exist in the process can be accessed.
Reads and writes to this file modify the process.
Writes to the text segment remain private to the process.
Each node is owned by the process's user, and belongs to that user's
primary group, except for the
mem
node, which belongs to the
kmem
group.
FILES
/compat/linux/proc
The normal mount point for the
.
/compat/linux/proc/cpuinfo
CPU vendor and model information in human-readable form.
/compat/linux/proc/meminfo
System memory information in human-readable form.
/compat/linux/proc/pid
A directory containing process information for process
pid
/compat/linux/proc/self
A directory containing process information for the current process.
/compat/linux/proc/self/exe
The executable image for the current process.
/compat/linux/proc/self/mem
The complete virtual address space of the current process.
An -nosplit
The
was derived from
procfs
by
An Pierre Beyssac .
This manual page was written by
An Dag-Erling Sm/orgrav ,
based on the
procfs(5)
manual page by
An Garrett Wollman .
