257 lines
9.3 KiB
C
257 lines
9.3 KiB
C
/* $NetBSD: procfs.h,v 1.63 2007/02/09 21:55:36 ad Exp $ */
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/*
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* Copyright (c) 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Jan-Simon Pendry.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)procfs.h 8.9 (Berkeley) 5/14/95
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*/
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/*
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* Copyright (c) 1993 Jan-Simon Pendry
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*
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* This code is derived from software contributed to Berkeley by
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* Jan-Simon Pendry.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)procfs.h 8.9 (Berkeley) 5/14/95
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*/
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/* This also pulls in __HAVE_PROCFS_MACHDEP */
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#include <sys/ptrace.h>
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#ifdef _KERNEL
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/*
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* The different types of node in a procfs filesystem
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*/
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typedef enum {
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PFSroot, /* the filesystem root */
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PFScurproc, /* symbolic link for curproc */
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PFSself, /* like curproc, but this is the Linux name */
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PFSproc, /* a process-specific sub-directory */
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PFSfile, /* the executable file */
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PFSexe, /* symlink to the executable file */
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PFSmem, /* the process's memory image */
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PFSregs, /* the process's register set */
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PFSfpregs, /* the process's FP register set */
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PFSctl, /* process control */
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PFSstat, /* process status (if -o linux) */
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PFSstatus, /* process status */
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PFSnote, /* process notifier */
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PFSnotepg, /* process group notifier */
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PFSmap, /* memory map */
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PFScmdline, /* process command line args */
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PFSmeminfo, /* system memory info (if -o linux) */
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PFScpuinfo, /* CPU info (if -o linux) */
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PFSmaps, /* memory map, Linux style (if -o linux) */
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PFSfd, /* a directory containing the processes open fd's */
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PFSuptime, /* elapsed time since (if -o linux) */
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PFSmounts, /* mounted filesystems (if -o linux) */
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PFScwd, /* the process's current working directory */
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PFSchroot, /* the process's current root directory */
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PFSemul, /* the process's emulation */
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PFSdevices, /* major/device name mappings (if -o linux) */
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#ifdef __HAVE_PROCFS_MACHDEP
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PROCFS_MACHDEP_NODE_TYPES
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#endif
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} pfstype;
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/*
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* control data for the proc file system.
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*/
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struct pfsnode {
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LIST_ENTRY(pfsnode) pfs_hash; /* hash chain */
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struct vnode *pfs_vnode; /* vnode associated with this pfsnode */
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pfstype pfs_type; /* type of procfs node */
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pid_t pfs_pid; /* associated process */
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int pfs_fd; /* associated fd if not -1 */
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mode_t pfs_mode; /* mode bits for stat() */
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u_long pfs_flags; /* open flags */
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u_long pfs_fileno; /* unique file id */
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};
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#define PROCFS_NOTELEN 64 /* max length of a note (/proc/$pid/note) */
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#define PROCFS_CTLLEN 8 /* max length of a ctl msg (/proc/$pid/ctl */
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#endif /* _KERNEL */
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struct procfs_args {
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int version;
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int flags;
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};
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#define PROCFS_ARGSVERSION 1
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#define PROCFSMNT_LINUXCOMPAT 0x01
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#define PROCFSMNT_BITS "\177\20" \
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"b\00linuxcompat\0"
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/*
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* Kernel stuff follows
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*/
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#ifdef _KERNEL
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#define CNEQ(cnp, s, len) \
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((cnp)->cn_namelen == (len) && \
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(memcmp((s), (cnp)->cn_nameptr, (len)) == 0))
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#define UIO_MX 32
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#define PROCFS_FILENO(pid, type, fd) \
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(((type) < PFSproc) ? ((type) + 2) : \
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(((fd) == -1) ? ((((pid)+1) << 5) + ((int) (type))) : \
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((((pid)+1) << 16) | ((fd) << 5) | ((int) (type)))))
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#define PROCFS_TYPE(type) ((type) & 0x1f)
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struct procfsmount {
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void *pmnt_exechook;
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int pmnt_flags;
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};
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#define VFSTOPROC(mp) ((struct procfsmount *)(mp)->mnt_data)
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/*
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* Convert between pfsnode vnode
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*/
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#define VTOPFS(vp) ((struct pfsnode *)(vp)->v_data)
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#define PFSTOV(pfs) ((pfs)->pfs_vnode)
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typedef struct vfs_namemap vfs_namemap_t;
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struct vfs_namemap {
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const char *nm_name;
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int nm_val;
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};
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int vfs_getuserstr(struct uio *, char *, int *);
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const vfs_namemap_t *vfs_findname(const vfs_namemap_t *, const char *, int);
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int procfs_proc_lock(int, struct proc **, int);
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void procfs_proc_unlock(struct proc *);
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int procfs_freevp(struct vnode *);
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int procfs_allocvp(struct mount *, struct vnode **, pid_t, pfstype, int,
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struct proc *);
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int procfs_donote(struct lwp *, struct proc *, struct pfsnode *,
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struct uio *);
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int procfs_doregs(struct lwp *, struct lwp *, struct pfsnode *,
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struct uio *);
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int procfs_dofpregs(struct lwp *, struct lwp *, struct pfsnode *,
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struct uio *);
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int procfs_domem(struct lwp *, struct lwp *, struct pfsnode *,
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struct uio *);
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int procfs_doctl(struct lwp *, struct lwp *, struct pfsnode *,
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struct uio *);
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int procfs_do_pid_stat(struct lwp *, struct lwp *, struct pfsnode *,
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struct uio *);
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int procfs_dostatus(struct lwp *, struct lwp *, struct pfsnode *,
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struct uio *);
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int procfs_domap(struct lwp *, struct proc *, struct pfsnode *,
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struct uio *, int);
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int procfs_docmdline(struct lwp *, struct proc *, struct pfsnode *,
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struct uio *);
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int procfs_domeminfo(struct lwp *, struct proc *, struct pfsnode *,
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struct uio *);
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int procfs_dodevices(struct lwp *, struct proc *, struct pfsnode *,
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struct uio *);
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int procfs_docpuinfo(struct lwp *, struct proc *, struct pfsnode *,
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struct uio *);
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int procfs_dofd(struct lwp *, struct proc *, struct pfsnode *,
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struct uio *);
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int procfs_douptime(struct lwp *, struct proc *, struct pfsnode *,
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struct uio *);
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int procfs_domounts(struct lwp *, struct proc *, struct pfsnode *,
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struct uio *);
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int procfs_doemul(struct lwp *, struct proc *, struct pfsnode *,
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struct uio *);
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void procfs_revoke_vnodes(struct proc *, void *);
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void procfs_hashinit(void);
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void procfs_hashreinit(void);
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void procfs_hashdone(void);
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int procfs_getfp(struct pfsnode *, struct proc *, struct file **);
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/* functions to check whether or not files should be displayed */
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int procfs_validfile(struct lwp *, struct mount *);
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int procfs_validfpregs(struct lwp *, struct mount *);
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int procfs_validregs(struct lwp *, struct mount *);
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int procfs_validmap(struct lwp *, struct mount *);
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int procfs_rw(void *);
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int procfs_getcpuinfstr(char *, int *);
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#define PROCFS_LOCKED 0x01
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#define PROCFS_WANT 0x02
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extern int (**procfs_vnodeop_p)(void *);
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extern struct vfsops procfs_vfsops;
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int procfs_root(struct mount *, struct vnode **);
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#ifdef __HAVE_PROCFS_MACHDEP
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struct vattr;
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void procfs_machdep_allocvp(struct vnode *);
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int procfs_machdep_rw(struct lwp *, struct lwp *, struct pfsnode *,
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struct uio *);
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int procfs_machdep_getattr(struct vnode *, struct vattr *, struct proc *);
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#endif
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#ifdef SYSCTL_SETUP_PROTO
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SYSCTL_SETUP_PROTO(sysctl_vfs_procfs_setup);
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#endif /* SYSCTL_SETUP_PROTO */
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#endif /* _KERNEL */
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