d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
a3fff002fa
freebsd-skq/sys/fs/pseudofs/pseudofs.h

261 lines
6.9 KiB
C
Raw Normal View History

Let pseudofs into the warmth of the FreeBSD CVS repo. It's not finished yet (I still have to find a way to implement process- dependent nodes without consuming too much memory, and the permission system needs tightening up), but it's becoming hard to work on without a repo (I've accidentally almost nuked it once already), and it works (except for the lack of process-dependent nodes, that is). I was supposed to commit this a week ago, but timed out waiting for jkh to reply to some questions I had. Pass him a spoonful of bad karma :)
2001-04-07 19:51:12 +00:00
/*-
* Copyright (c) 2001 Dag-Erling Co<EFBFBD>dan Sm<EFBFBD>rgrav
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer
* in this position and unchanged.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _PSEUDOFS_H_INCLUDED
#define _PSEUDOFS_H_INCLUDED
Reduce the number of #include dependencies by declaring some of the structs used in pseudofs.h as opaque structs.
2001-11-03 03:07:09 +00:00
/*
* Opaque structures
*/
struct mount;
struct nameidata;
struct proc;
struct sbuf;
struct statfs;
struct thread;
struct uio;
struct vfsconf;
struct vnode;
Let pseudofs into the warmth of the FreeBSD CVS repo. It's not finished yet (I still have to find a way to implement process- dependent nodes without consuming too much memory, and the permission system needs tightening up), but it's becoming hard to work on without a repo (I've accidentally almost nuked it once already), and it works (except for the lack of process-dependent nodes, that is). I was supposed to commit this a week ago, but timed out waiting for jkh to reply to some questions I had. Pass him a spoonful of bad karma :)
2001-04-07 19:51:12 +00:00
/*
* Limits and constants
*/
#define PFS_NAMELEN 24
Reduce the number of #include dependencies by declaring some of the structs used in pseudofs.h as opaque structs.
2001-11-03 03:07:09 +00:00
#define PFS_FSNAMELEN 16 /* equal to MFSNAMELEN */
Let pseudofs into the warmth of the FreeBSD CVS repo. It's not finished yet (I still have to find a way to implement process- dependent nodes without consuming too much memory, and the permission system needs tightening up), but it's becoming hard to work on without a repo (I've accidentally almost nuked it once already), and it works (except for the lack of process-dependent nodes, that is). I was supposed to commit this a week ago, but timed out waiting for jkh to reply to some questions I had. Pass him a spoonful of bad karma :)
2001-04-07 19:51:12 +00:00
#define PFS_DELEN (8 + PFS_NAMELEN)
typedef enum {
pfstype_none = 0,
pfstype_root,
pfstype_dir,
pfstype_this,
pfstype_parent,
pfstype_file,
pfstype_symlink,
Add support for process-dependent directories. This means that save for the lack of a man page, pseudofs is mostly complete now.
2001-06-10 18:39:21 +00:00
pfstype_procdir
Let pseudofs into the warmth of the FreeBSD CVS repo. It's not finished yet (I still have to find a way to implement process- dependent nodes without consuming too much memory, and the permission system needs tightening up), but it's becoming hard to work on without a repo (I've accidentally almost nuked it once already), and it works (except for the lack of process-dependent nodes, that is). I was supposed to commit this a week ago, but timed out waiting for jkh to reply to some questions I had. Pass him a spoonful of bad karma :)
2001-04-07 19:51:12 +00:00
} pfs_type_t;
Clean up my source tree to avoid getting hit too badly by the next KSE or whatever mega-commit. This goes some way towards adding support for writeable files (needed by procfs).
2001-09-25 13:25:30 +00:00
/*
* Flags
*/
pseudofs.h: - Rearrange the flag constants a little to simplify specifying and testing for readability and writeability. pseudofs_vnops.c: - Track the aforementioned change. - Add checks to pfs_open() to prevent opening read-only files for writing or vice versa (pfs_{read,write} would block the actual reads and writes, but it's still a bug to allow the open() to succeed). Also, return EOPNOTSUPP if the caller attempts to lock the file. - Add more trace points.
2001-09-30 19:41:29 +00:00
#define PFS_RD 0x0001 /* readable */
#define PFS_WR 0x0002 /* writeable */
#define PFS_RDWR (PFS_RD|PFS_WR)
Clean up my source tree to avoid getting hit too badly by the next KSE or whatever mega-commit. This goes some way towards adding support for writeable files (needed by procfs).
2001-09-25 13:25:30 +00:00
#define PFS_RAWRD 0x0004 /* raw reader */
#define PFS_RAWWR 0x0008 /* raw writer */
pseudofs.h: - Rearrange the flag constants a little to simplify specifying and testing for readability and writeability. pseudofs_vnops.c: - Track the aforementioned change. - Add checks to pfs_open() to prevent opening read-only files for writing or vice versa (pfs_{read,write} would block the actual reads and writes, but it's still a bug to allow the open() to succeed). Also, return EOPNOTSUPP if the caller attempts to lock the file. - Add more trace points.
2001-09-30 19:41:29 +00:00
#define PFS_RAW (PFS_RAWRD|PFS_RAWWR)
Switch to dynamic rather than static initialization. This makes it possible (in theory) for nodes to be added and / or removed from pseudofs filesystems at runtime.
2001-10-19 01:43:06 +00:00
#define PFS_PROCDEP 0x0010 /* process-dependent */
Add a PFS_DISABLED flag; pfs_visible() automatically returns 0 if it is set on the node in question. Also add two API functions for setting and clearing this flag; setting it also reclaims all vnodes associated with the node.
2001-10-02 22:22:42 +00:00
#define PFS_DISABLED 0x8000 /* node is disabled */
Clean up my source tree to avoid getting hit too badly by the next KSE or whatever mega-commit. This goes some way towards adding support for writeable files (needed by procfs).
2001-09-25 13:25:30 +00:00
Let pseudofs into the warmth of the FreeBSD CVS repo. It's not finished yet (I still have to find a way to implement process- dependent nodes without consuming too much memory, and the permission system needs tightening up), but it's becoming hard to work on without a repo (I've accidentally almost nuked it once already), and it works (except for the lack of process-dependent nodes, that is). I was supposed to commit this a week ago, but timed out waiting for jkh to reply to some questions I had. Pass him a spoonful of bad karma :)
2001-04-07 19:51:12 +00:00
/*
* Data structures
*/
struct pfs_info;
struct pfs_node;
struct pfs_bitmap;
Switch to dynamic rather than static initialization. This makes it possible (in theory) for nodes to be added and / or removed from pseudofs filesystems at runtime.
2001-10-19 01:43:06 +00:00
/*
* Init / uninit callback
*/
#define PFS_INIT_ARGS \
struct pfs_info *pi, struct vfsconf *vfc
#define PFS_INIT_PROTO(name) \
int name(PFS_INIT_ARGS);
typedef int (*pfs_init_t)(PFS_INIT_ARGS);
Pseudofs take 2: - Remove hardcoded uid, gid, mode from struct pfs_node; make pfs_getattr() smart enough to get it right most of the time, and allow for callbacks to handle the remaining cases. Rework the definition macros to match. - Add lots of (conditional) debugging output. - Fix a long-standing bug inherited from procfs: don't pretend to be a read-only file system. Instead, return EOPNOTSUPP for operations we truly can't support and allow others to fail silently. In particular, pfs_lookup() now treats CREATE as LOOKUP. This may need more work. - In pfs_lookup(), if the parent node is process-dependent, check that the process in question still exists. - Implement pfs_open() - its only current function is to check that the process opening the file can see the process it belongs to. - Finish adding support for writeable nodes. - Bump module version number. - Introduce lots of new bugs.
2001-09-29 00:49:29 +00:00
/*
* Filler callback
*/
Add support for process-dependent directories. This means that save for the lack of a man page, pseudofs is mostly complete now.
2001-06-10 18:39:21 +00:00
#define PFS_FILL_ARGS \
Clean up my source tree to avoid getting hit too badly by the next KSE or whatever mega-commit. This goes some way towards adding support for writeable files (needed by procfs).
2001-09-25 13:25:30 +00:00
struct thread *td, struct proc *p, struct pfs_node *pn, \
struct sbuf *sb, struct uio *uio
Add support for process-dependent directories. This means that save for the lack of a man page, pseudofs is mostly complete now.
2001-06-10 18:39:21 +00:00
#define PFS_FILL_PROTO(name) \
int name(PFS_FILL_ARGS);
typedef int (*pfs_fill_t)(PFS_FILL_ARGS);
Let pseudofs into the warmth of the FreeBSD CVS repo. It's not finished yet (I still have to find a way to implement process- dependent nodes without consuming too much memory, and the permission system needs tightening up), but it's becoming hard to work on without a repo (I've accidentally almost nuked it once already), and it works (except for the lack of process-dependent nodes, that is). I was supposed to commit this a week ago, but timed out waiting for jkh to reply to some questions I had. Pass him a spoonful of bad karma :)
2001-04-07 19:51:12 +00:00
Pseudofs take 2: - Remove hardcoded uid, gid, mode from struct pfs_node; make pfs_getattr() smart enough to get it right most of the time, and allow for callbacks to handle the remaining cases. Rework the definition macros to match. - Add lots of (conditional) debugging output. - Fix a long-standing bug inherited from procfs: don't pretend to be a read-only file system. Instead, return EOPNOTSUPP for operations we truly can't support and allow others to fail silently. In particular, pfs_lookup() now treats CREATE as LOOKUP. This may need more work. - In pfs_lookup(), if the parent node is process-dependent, check that the process in question still exists. - Implement pfs_open() - its only current function is to check that the process opening the file can see the process it belongs to. - Finish adding support for writeable nodes. - Bump module version number. - Introduce lots of new bugs.
2001-09-29 00:49:29 +00:00
/*
* Attribute callback
*/
struct vattr;
#define PFS_ATTR_ARGS \
struct thread *td, struct proc *p, struct pfs_node *pn, \
struct vattr *vap
#define PFS_ATTR_PROTO(name) \
int name(PFS_ATTR_ARGS);
typedef int (*pfs_attr_t)(PFS_ATTR_ARGS);
Let pseudofs into the warmth of the FreeBSD CVS repo. It's not finished yet (I still have to find a way to implement process- dependent nodes without consuming too much memory, and the permission system needs tightening up), but it's becoming hard to work on without a repo (I've accidentally almost nuked it once already), and it works (except for the lack of process-dependent nodes, that is). I was supposed to commit this a week ago, but timed out waiting for jkh to reply to some questions I had. Pass him a spoonful of bad karma :)
2001-04-07 19:51:12 +00:00
struct pfs_bitmap; /* opaque */
YA pseudofs megacommit, part 1: - Add a third callback to the pfs_node structure. This one simply returns non-zero if the specified requesting process is allowed to access the specified node for the specified target process. This is used in addition to the usual permission checks, e.g. when certain files don't make sense for certain (system) processes. - Make sure that pfs_lookup() and pfs_readdir() don't yap about files which aren't pfs_visible(). Also check pfs_visible() before performing reads and writes, to prevent the kind of races reported in SA-00:77 and SA-01:55 (fork a child, open /proc/child/ctl, have that child fork a setuid binary, and assume control of it). - Add some more trace points.
2001-10-01 04:22:20 +00:00
/*
* Visibility callback
*/
#define PFS_VIS_ARGS \
struct thread *td, struct proc *p, struct pfs_node *pn
#define PFS_VIS_PROTO(name) \
int name(PFS_VIS_ARGS);
typedef int (*pfs_vis_t)(PFS_VIS_ARGS);
Add VOP_IOCTL support, and fix a bug that would cause a panic if a file or symlink lacked a filler function.
2001-10-26 18:52:47 +00:00
/*
* Ioctl callback
*/
#define PFS_IOCTL_ARGS \
struct thread *td, struct proc *p, struct pfs_node *pn, \
unsigned long cmd, caddr_t data
#define PFS_IOCTL_PROTO(name) \
int name(PFS_IOCTL_ARGS);
typedef int (*pfs_ioctl_t)(PFS_IOCTL_ARGS);
Add support for a last-close handler. Revert the module version bumps; they're quite pointless as long as the only pseudofs consumer is linprocfs, which is in the tree.
2001-11-27 13:26:27 +00:00
/*
* Last-close callback
*/
#define PFS_CLOSE_ARGS \
struct thread *td, struct proc *p, struct pfs_node *pn
#define PFS_CLOSE_PROTO(name) \
int name(PFS_CLOSE_ARGS);
typedef int (*pfs_close_t)(PFS_CLOSE_ARGS);
Let pseudofs into the warmth of the FreeBSD CVS repo. It's not finished yet (I still have to find a way to implement process- dependent nodes without consuming too much memory, and the permission system needs tightening up), but it's becoming hard to work on without a repo (I've accidentally almost nuked it once already), and it works (except for the lack of process-dependent nodes, that is). I was supposed to commit this a week ago, but timed out waiting for jkh to reply to some questions I had. Pass him a spoonful of bad karma :)
2001-04-07 19:51:12 +00:00
/*
* pfs_info: describes a pseudofs instance
*/
struct pfs_info {
Reduce the number of #include dependencies by declaring some of the structs used in pseudofs.h as opaque structs.
2001-11-03 03:07:09 +00:00
char pi_name[PFS_FSNAMELEN];
Switch to dynamic rather than static initialization. This makes it possible (in theory) for nodes to be added and / or removed from pseudofs filesystems at runtime.
2001-10-19 01:43:06 +00:00
pfs_init_t pi_init;
pfs_init_t pi_uninit;
Let pseudofs into the warmth of the FreeBSD CVS repo. It's not finished yet (I still have to find a way to implement process- dependent nodes without consuming too much memory, and the permission system needs tightening up), but it's becoming hard to work on without a repo (I've accidentally almost nuked it once already), and it works (except for the lack of process-dependent nodes, that is). I was supposed to commit this a week ago, but timed out waiting for jkh to reply to some questions I had. Pass him a spoonful of bad karma :)
2001-04-07 19:51:12 +00:00
/* members below this line aren't initialized */
Switch to dynamic rather than static initialization. This makes it possible (in theory) for nodes to be added and / or removed from pseudofs filesystems at runtime.
2001-10-19 01:43:06 +00:00
struct pfs_node *pi_root;
Let pseudofs into the warmth of the FreeBSD CVS repo. It's not finished yet (I still have to find a way to implement process- dependent nodes without consuming too much memory, and the permission system needs tightening up), but it's becoming hard to work on without a repo (I've accidentally almost nuked it once already), and it works (except for the lack of process-dependent nodes, that is). I was supposed to commit this a week ago, but timed out waiting for jkh to reply to some questions I had. Pass him a spoonful of bad karma :)
2001-04-07 19:51:12 +00:00
/* currently, the mutex is only used to protect the bitmap */
struct mtx pi_mutex;
struct pfs_bitmap *pi_bitmap;
};
/*
Add support for process-dependent directories. This means that save for the lack of a man page, pseudofs is mostly complete now.
2001-06-10 18:39:21 +00:00
* pfs_node: describes a node (file or directory) within a pseudofs
Let pseudofs into the warmth of the FreeBSD CVS repo. It's not finished yet (I still have to find a way to implement process- dependent nodes without consuming too much memory, and the permission system needs tightening up), but it's becoming hard to work on without a repo (I've accidentally almost nuked it once already), and it works (except for the lack of process-dependent nodes, that is). I was supposed to commit this a week ago, but timed out waiting for jkh to reply to some questions I had. Pass him a spoonful of bad karma :)
2001-04-07 19:51:12 +00:00
*/
struct pfs_node {
char pn_name[PFS_NAMELEN];
pfs_type_t pn_type;
union {
Pseudofs take 2: - Remove hardcoded uid, gid, mode from struct pfs_node; make pfs_getattr() smart enough to get it right most of the time, and allow for callbacks to handle the remaining cases. Rework the definition macros to match. - Add lots of (conditional) debugging output. - Fix a long-standing bug inherited from procfs: don't pretend to be a read-only file system. Instead, return EOPNOTSUPP for operations we truly can't support and allow others to fail silently. In particular, pfs_lookup() now treats CREATE as LOOKUP. This may need more work. - In pfs_lookup(), if the parent node is process-dependent, check that the process in question still exists. - Implement pfs_open() - its only current function is to check that the process opening the file can see the process it belongs to. - Finish adding support for writeable nodes. - Bump module version number. - Introduce lots of new bugs.
2001-09-29 00:49:29 +00:00
void *_pn_dummy;
Let pseudofs into the warmth of the FreeBSD CVS repo. It's not finished yet (I still have to find a way to implement process- dependent nodes without consuming too much memory, and the permission system needs tightening up), but it's becoming hard to work on without a repo (I've accidentally almost nuked it once already), and it works (except for the lack of process-dependent nodes, that is). I was supposed to commit this a week ago, but timed out waiting for jkh to reply to some questions I had. Pass him a spoonful of bad karma :)
2001-04-07 19:51:12 +00:00
pfs_fill_t _pn_func;
struct pfs_node *_pn_nodes;
} u1;
#define pn_func u1._pn_func
#define pn_nodes u1._pn_nodes
Add VOP_IOCTL support, and fix a bug that would cause a panic if a file or symlink lacked a filler function.
2001-10-26 18:52:47 +00:00
pfs_ioctl_t pn_ioctl;
Add support for a last-close handler. Revert the module version bumps; they're quite pointless as long as the only pseudofs consumer is linprocfs, which is in the tree.
2001-11-27 13:26:27 +00:00
pfs_close_t pn_close;
Pseudofs take 2: - Remove hardcoded uid, gid, mode from struct pfs_node; make pfs_getattr() smart enough to get it right most of the time, and allow for callbacks to handle the remaining cases. Rework the definition macros to match. - Add lots of (conditional) debugging output. - Fix a long-standing bug inherited from procfs: don't pretend to be a read-only file system. Instead, return EOPNOTSUPP for operations we truly can't support and allow others to fail silently. In particular, pfs_lookup() now treats CREATE as LOOKUP. This may need more work. - In pfs_lookup(), if the parent node is process-dependent, check that the process in question still exists. - Implement pfs_open() - its only current function is to check that the process opening the file can see the process it belongs to. - Finish adding support for writeable nodes. - Bump module version number. - Introduce lots of new bugs.
2001-09-29 00:49:29 +00:00
pfs_attr_t pn_attr;
YA pseudofs megacommit, part 1: - Add a third callback to the pfs_node structure. This one simply returns non-zero if the specified requesting process is allowed to access the specified node for the specified target process. This is used in addition to the usual permission checks, e.g. when certain files don't make sense for certain (system) processes. - Make sure that pfs_lookup() and pfs_readdir() don't yap about files which aren't pfs_visible(). Also check pfs_visible() before performing reads and writes, to prevent the kind of races reported in SA-00:77 and SA-01:55 (fork a child, open /proc/child/ctl, have that child fork a setuid binary, and assume control of it). - Add some more trace points.
2001-10-01 04:22:20 +00:00
pfs_vis_t pn_vis;
Pseudofs take 2: - Remove hardcoded uid, gid, mode from struct pfs_node; make pfs_getattr() smart enough to get it right most of the time, and allow for callbacks to handle the remaining cases. Rework the definition macros to match. - Add lots of (conditional) debugging output. - Fix a long-standing bug inherited from procfs: don't pretend to be a read-only file system. Instead, return EOPNOTSUPP for operations we truly can't support and allow others to fail silently. In particular, pfs_lookup() now treats CREATE as LOOKUP. This may need more work. - In pfs_lookup(), if the parent node is process-dependent, check that the process in question still exists. - Implement pfs_open() - its only current function is to check that the process opening the file can see the process it belongs to. - Finish adding support for writeable nodes. - Bump module version number. - Introduce lots of new bugs.
2001-09-29 00:49:29 +00:00
void *pn_data;
int pn_flags;
Switch to dynamic rather than static initialization. This makes it possible (in theory) for nodes to be added and / or removed from pseudofs filesystems at runtime.
2001-10-19 01:43:06 +00:00
struct pfs_info *pn_info;
Let pseudofs into the warmth of the FreeBSD CVS repo. It's not finished yet (I still have to find a way to implement process- dependent nodes without consuming too much memory, and the permission system needs tightening up), but it's becoming hard to work on without a repo (I've accidentally almost nuked it once already), and it works (except for the lack of process-dependent nodes, that is). I was supposed to commit this a week ago, but timed out waiting for jkh to reply to some questions I had. Pass him a spoonful of bad karma :)
2001-04-07 19:51:12 +00:00
struct pfs_node *pn_parent;
Switch to dynamic rather than static initialization. This makes it possible (in theory) for nodes to be added and / or removed from pseudofs filesystems at runtime.
2001-10-19 01:43:06 +00:00
struct pfs_node *pn_next;
Add support for process-dependent directories. This means that save for the lack of a man page, pseudofs is mostly complete now.
2001-06-10 18:39:21 +00:00
u_int32_t pn_fileno;
Let pseudofs into the warmth of the FreeBSD CVS repo. It's not finished yet (I still have to find a way to implement process- dependent nodes without consuming too much memory, and the permission system needs tightening up), but it's becoming hard to work on without a repo (I've accidentally almost nuked it once already), and it works (except for the lack of process-dependent nodes, that is). I was supposed to commit this a week ago, but timed out waiting for jkh to reply to some questions I had. Pass him a spoonful of bad karma :)
2001-04-07 19:51:12 +00:00
};
/*
* VFS interface
*/
Switch to dynamic rather than static initialization. This makes it possible (in theory) for nodes to be added and / or removed from pseudofs filesystems at runtime.
2001-10-19 01:43:06 +00:00
int pfs_mount (struct pfs_info *pi,
Let pseudofs into the warmth of the FreeBSD CVS repo. It's not finished yet (I still have to find a way to implement process- dependent nodes without consuming too much memory, and the permission system needs tightening up), but it's becoming hard to work on without a repo (I've accidentally almost nuked it once already), and it works (except for the lack of process-dependent nodes, that is). I was supposed to commit this a week ago, but timed out waiting for jkh to reply to some questions I had. Pass him a spoonful of bad karma :)
2001-04-07 19:51:12 +00:00
struct mount *mp, char *path, caddr_t data,
KSE Milestone 2 Note ALL MODULES MUST BE RECOMPILED make the kernel aware that there are smaller units of scheduling than the process. (but only allow one thread per process at this time). This is functionally equivalent to teh previousl -current except that there is a thread associated with each process. Sorry john! (your next MFC will be a doosie!) Reviewed by: peter@freebsd.org, dillon@freebsd.org X-MFC after: ha ha ha ha
2001-09-12 08:38:13 +00:00
struct nameidata *ndp, struct thread *td);
Switch to dynamic rather than static initialization. This makes it possible (in theory) for nodes to be added and / or removed from pseudofs filesystems at runtime.
2001-10-19 01:43:06 +00:00
int pfs_unmount (struct mount *mp, int mntflags,
KSE Milestone 2 Note ALL MODULES MUST BE RECOMPILED make the kernel aware that there are smaller units of scheduling than the process. (but only allow one thread per process at this time). This is functionally equivalent to teh previousl -current except that there is a thread associated with each process. Sorry john! (your next MFC will be a doosie!) Reviewed by: peter@freebsd.org, dillon@freebsd.org X-MFC after: ha ha ha ha
2001-09-12 08:38:13 +00:00
struct thread *td);
Switch to dynamic rather than static initialization. This makes it possible (in theory) for nodes to be added and / or removed from pseudofs filesystems at runtime.
2001-10-19 01:43:06 +00:00
int pfs_root (struct mount *mp, struct vnode **vpp);
int pfs_statfs (struct mount *mp, struct statfs *sbp,
KSE Milestone 2 Note ALL MODULES MUST BE RECOMPILED make the kernel aware that there are smaller units of scheduling than the process. (but only allow one thread per process at this time). This is functionally equivalent to teh previousl -current except that there is a thread associated with each process. Sorry john! (your next MFC will be a doosie!) Reviewed by: peter@freebsd.org, dillon@freebsd.org X-MFC after: ha ha ha ha
2001-09-12 08:38:13 +00:00
struct thread *td);
Switch to dynamic rather than static initialization. This makes it possible (in theory) for nodes to be added and / or removed from pseudofs filesystems at runtime.
2001-10-19 01:43:06 +00:00
int pfs_init (struct pfs_info *pi, struct vfsconf *vfc);
int pfs_uninit (struct pfs_info *pi, struct vfsconf *vfc);
Let pseudofs into the warmth of the FreeBSD CVS repo. It's not finished yet (I still have to find a way to implement process- dependent nodes without consuming too much memory, and the permission system needs tightening up), but it's becoming hard to work on without a repo (I've accidentally almost nuked it once already), and it works (except for the lack of process-dependent nodes, that is). I was supposed to commit this a week ago, but timed out waiting for jkh to reply to some questions I had. Pass him a spoonful of bad karma :)
2001-04-07 19:51:12 +00:00
Add a PFS_DISABLED flag; pfs_visible() automatically returns 0 if it is set on the node in question. Also add two API functions for setting and clearing this flag; setting it also reclaims all vnodes associated with the node.
2001-10-02 22:22:42 +00:00
/*
Switch to dynamic rather than static initialization. This makes it possible (in theory) for nodes to be added and / or removed from pseudofs filesystems at runtime.
2001-10-19 01:43:06 +00:00
* Directory structure construction and manipulation
Add a PFS_DISABLED flag; pfs_visible() automatically returns 0 if it is set on the node in question. Also add two API functions for setting and clearing this flag; setting it also reclaims all vnodes associated with the node.
2001-10-02 22:22:42 +00:00
*/
Switch to dynamic rather than static initialization. This makes it possible (in theory) for nodes to be added and / or removed from pseudofs filesystems at runtime.
2001-10-19 01:43:06 +00:00
struct pfs_node *pfs_create_dir (struct pfs_node *parent, char *name,
pfs_attr_t attr, pfs_vis_t vis, int flags);
struct pfs_node *pfs_create_file(struct pfs_node *parent, char *name,
pfs_fill_t fill, pfs_attr_t attr,
pfs_vis_t vis, int flags);
struct pfs_node *pfs_create_link(struct pfs_node *parent, char *name,
pfs_fill_t fill, pfs_attr_t attr,
pfs_vis_t vis, int flags);
int pfs_disable (struct pfs_node *pn);
int pfs_enable (struct pfs_node *pn);
int pfs_destroy (struct pfs_node *pn);
Add a PFS_DISABLED flag; pfs_visible() automatically returns 0 if it is set on the node in question. Also add two API functions for setting and clearing this flag; setting it also reclaims all vnodes associated with the node.
2001-10-02 22:22:42 +00:00
Let pseudofs into the warmth of the FreeBSD CVS repo. It's not finished yet (I still have to find a way to implement process- dependent nodes without consuming too much memory, and the permission system needs tightening up), but it's becoming hard to work on without a repo (I've accidentally almost nuked it once already), and it works (except for the lack of process-dependent nodes, that is). I was supposed to commit this a week ago, but timed out waiting for jkh to reply to some questions I had. Pass him a spoonful of bad karma :)
2001-04-07 19:51:12 +00:00
/*
* Now for some initialization magic...
*/
Switch to dynamic rather than static initialization. This makes it possible (in theory) for nodes to be added and / or removed from pseudofs filesystems at runtime.
2001-10-19 01:43:06 +00:00
#define PSEUDOFS(name, version) \
Let pseudofs into the warmth of the FreeBSD CVS repo. It's not finished yet (I still have to find a way to implement process- dependent nodes without consuming too much memory, and the permission system needs tightening up), but it's becoming hard to work on without a repo (I've accidentally almost nuked it once already), and it works (except for the lack of process-dependent nodes, that is). I was supposed to commit this a week ago, but timed out waiting for jkh to reply to some questions I had. Pass him a spoonful of bad karma :)
2001-04-07 19:51:12 +00:00
\
static struct pfs_info name##_info = { \
#name, \
Switch to dynamic rather than static initialization. This makes it possible (in theory) for nodes to be added and / or removed from pseudofs filesystems at runtime.
2001-10-19 01:43:06 +00:00
&name##_init, \
&name##_uninit, \
Let pseudofs into the warmth of the FreeBSD CVS repo. It's not finished yet (I still have to find a way to implement process- dependent nodes without consuming too much memory, and the permission system needs tightening up), but it's becoming hard to work on without a repo (I've accidentally almost nuked it once already), and it works (except for the lack of process-dependent nodes, that is). I was supposed to commit this a week ago, but timed out waiting for jkh to reply to some questions I had. Pass him a spoonful of bad karma :)
2001-04-07 19:51:12 +00:00
}; \
\
static int \
_##name##_mount(struct mount *mp, char *path, caddr_t data, \
KSE Milestone 2 Note ALL MODULES MUST BE RECOMPILED make the kernel aware that there are smaller units of scheduling than the process. (but only allow one thread per process at this time). This is functionally equivalent to teh previousl -current except that there is a thread associated with each process. Sorry john! (your next MFC will be a doosie!) Reviewed by: peter@freebsd.org, dillon@freebsd.org X-MFC after: ha ha ha ha
2001-09-12 08:38:13 +00:00
struct nameidata *ndp, struct thread *td) { \
Pseudofs take 2: - Remove hardcoded uid, gid, mode from struct pfs_node; make pfs_getattr() smart enough to get it right most of the time, and allow for callbacks to handle the remaining cases. Rework the definition macros to match. - Add lots of (conditional) debugging output. - Fix a long-standing bug inherited from procfs: don't pretend to be a read-only file system. Instead, return EOPNOTSUPP for operations we truly can't support and allow others to fail silently. In particular, pfs_lookup() now treats CREATE as LOOKUP. This may need more work. - In pfs_lookup(), if the parent node is process-dependent, check that the process in question still exists. - Implement pfs_open() - its only current function is to check that the process opening the file can see the process it belongs to. - Finish adding support for writeable nodes. - Bump module version number. - Introduce lots of new bugs.
2001-09-29 00:49:29 +00:00
return pfs_mount(&name##_info, mp, path, data, ndp, td); \
Let pseudofs into the warmth of the FreeBSD CVS repo. It's not finished yet (I still have to find a way to implement process- dependent nodes without consuming too much memory, and the permission system needs tightening up), but it's becoming hard to work on without a repo (I've accidentally almost nuked it once already), and it works (except for the lack of process-dependent nodes, that is). I was supposed to commit this a week ago, but timed out waiting for jkh to reply to some questions I had. Pass him a spoonful of bad karma :)
2001-04-07 19:51:12 +00:00
} \
\
static int \
_##name##_init(struct vfsconf *vfc) { \
return pfs_init(&name##_info, vfc); \
} \
\
static int \
_##name##_uninit(struct vfsconf *vfc) { \
return pfs_uninit(&name##_info, vfc); \
} \
\
Whoops, some of my test code snuck in here.
2001-06-10 21:37:11 +00:00
static struct vfsops name##_vfsops = { \
Let pseudofs into the warmth of the FreeBSD CVS repo. It's not finished yet (I still have to find a way to implement process- dependent nodes without consuming too much memory, and the permission system needs tightening up), but it's becoming hard to work on without a repo (I've accidentally almost nuked it once already), and it works (except for the lack of process-dependent nodes, that is). I was supposed to commit this a week ago, but timed out waiting for jkh to reply to some questions I had. Pass him a spoonful of bad karma :)
2001-04-07 19:51:12 +00:00
_##name##_mount, \
vfs_stdstart, \
pfs_unmount, \
pfs_root, \
vfs_stdquotactl, \
pfs_statfs, \
vfs_stdsync, \
vfs_stdvget, \
vfs_stdfhtovp, \
vfs_stdcheckexp, \
vfs_stdvptofh, \
_##name##_init, \
_##name##_uninit, \
vfs_stdextattrctl, \
}; \
VFS_SET(name##_vfsops, name, VFCF_SYNTHETIC); \
Clean up my source tree to avoid getting hit too badly by the next KSE or whatever mega-commit. This goes some way towards adding support for writeable files (needed by procfs).
2001-09-25 13:25:30 +00:00
MODULE_VERSION(name, version); \
Add support for a last-close handler. Revert the module version bumps; they're quite pointless as long as the only pseudofs consumer is linprocfs, which is in the tree.
2001-11-27 13:26:27 +00:00
MODULE_DEPEND(name, pseudofs, 1, 1, 1);
Let pseudofs into the warmth of the FreeBSD CVS repo. It's not finished yet (I still have to find a way to implement process- dependent nodes without consuming too much memory, and the permission system needs tightening up), but it's becoming hard to work on without a repo (I've accidentally almost nuked it once already), and it works (except for the lack of process-dependent nodes, that is). I was supposed to commit this a week ago, but timed out waiting for jkh to reply to some questions I had. Pass him a spoonful of bad karma :)
2001-04-07 19:51:12 +00:00
#endif
Reference in New Issue Copy Permalink