136 lines
4.7 KiB
C
136 lines
4.7 KiB
C
/*
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* Copyright (c) 1993 Jan-Simon Pendry
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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. 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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* $FreeBSD$
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*/
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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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Proot, /* the filesystem root */
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Pself, /* symbolic link for curproc */
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Pproc, /* a process-specific sub-directory */
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Pexe, /* the executable file */
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Pmem, /* the process's memory image */
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Pmeminfo,
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Pcpuinfo
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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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struct pfsnode *pfs_next; /* next on list */
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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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u_short 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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pid_t pfs_lockowner; /* pfs lock owner */
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};
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#define PROCFS_NAMELEN 8 /* max length of a filename component */
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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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(bcmp((s), (cnp)->cn_nameptr, (len)) == 0))
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#define KMEM_GROUP 2
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#define PROCFS_FILENO(pid, type) \
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(((type) < Pproc) ? \
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((type) + 2) : \
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((((pid)+1) << 4) + ((int) (type))))
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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 __P((struct uio *, char *, int *));
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vfs_namemap_t *vfs_findname __P((vfs_namemap_t *, char *, int));
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/* <machine/reg.h> */
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struct reg;
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struct fpreg;
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struct dbreg;
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#define PFIND(pid) ((pid) ? pfind(pid) : &proc0)
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void linprocfs_exit __P((struct proc *));
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int linprocfs_freevp __P((struct vnode *));
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int linprocfs_allocvp __P((struct mount *, struct vnode **, long, pfstype));
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struct vnode *linprocfs_findtextvp __P((struct proc *));
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int linprocfs_sstep __P((struct proc *));
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void linprocfs_fix_sstep __P((struct proc *));
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#if 0
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int linprocfs_read_regs __P((struct proc *, struct reg *));
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int linprocfs_write_regs __P((struct proc *, struct reg *));
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int linprocfs_read_fpregs __P((struct proc *, struct fpreg *));
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int linprocfs_write_fpregs __P((struct proc *, struct fpreg *));
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int linprocfs_read_dbregs __P((struct proc *, struct dbreg *));
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int linprocfs_write_dbregs __P((struct proc *, struct dbreg *));
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#endif
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int linprocfs_domeminfo __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio));
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int linprocfs_docpuinfo __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio));
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/* functions to check whether or not files should be displayed */
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int linprocfs_validfile __P((struct proc *));
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#define PROCFS_LOCKED 0x01
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#define PROCFS_WANT 0x02
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extern vop_t **linprocfs_vnodeop_p;
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int linprocfs_root __P((struct mount *, struct vnode **));
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int linprocfs_rw __P((struct vop_read_args *));
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#endif /* _KERNEL */
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