pseudofs(9) [debian man page]

PSEUDOFS(9)						   BSD Kernel Developer's Manual					       PSEUDOFS(9)

NAME

     pseudofs -- pseudo file system construction kit

SYNOPSIS

     #include <fs/pseudofs/pseudofs.h>

DESCRIPTION

     The pseudofs module offers an abstract API for pseudo-file systems such as procfs(5) and linprocfs(5).  It takes care of all the hairy bits
     like interfacing with the VFS system, enforcing access control, keeping track of file numbers, and cloning files and directories that are
     process-specific.	The consumer module, i.e., the module that implements the actual guts of the file system, needs only provide the directory
     structure (represented by a collection of structures declared and initialized by macros provided by pseudofs) and callbacks that report file
     attributes or write the actual file contents into sbufs.

SEE ALSO

     linprocfs(5), linsysfs(5), procfs(5), sbuf(9), vnode(9)

HISTORY

     The pseudofs module appeared in FreeBSD 5.0.

AUTHORS

     The pseudofs module and this manual page were written by Dag-Erling Smorgrav <des@FreeBSD.org>.

BSD
								  April 20, 2007							       BSD

LINPROCFS(5)						      BSD File Formats Manual						      LINPROCFS(5)

NAME

     linprocfs -- Linux process file system

SYNOPSIS

     linproc	     /compat/linux/proc      linprocfs	     rw 0 0

DESCRIPTION

     The Linux process file system, or linprocfs, emulates a subset of Linux' process file system and is required for the complete operation of
     some Linux binaries.

     The linprocfs 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 linprocfs.
     /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.

EXAMPLES

     To mount a linprocfs file system on /compat/linux/proc:

	   mount -t linprocfs linproc /compat/linux/proc

SEE ALSO

     mount(2), unmount(2), procfs(5), pseudofs(9)

HISTORY

     The linprocfs first appeared in FreeBSD 4.0.

AUTHORS

     The linprocfs was derived from procfs by Pierre Beyssac.  This manual page was written by Dag-Erling Smorgrav, based on the procfs(5) manual
     page by Garrett Wollman.

BSD
								  August 10, 1994							       BSD