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Commit	Line	Data
	1	/*
	2	* Copyright (c) 1993 Jan-Simon Pendry
	3	* Copyright (c) 1993
	4	* The Regents of the University of California. All rights reserved.
	5	*
	6	* This code is derived from software contributed to Berkeley by
	7	* Jan-Simon Pendry.
	8	*
	9	* Redistribution and use in source and binary forms, with or without
	10	* modification, are permitted provided that the following conditions
	11	* are met:
	12	* 1. Redistributions of source code must retain the above copyright
	13	* notice, this list of conditions and the following disclaimer.
	14	* 2. Redistributions in binary form must reproduce the above copyright
	15	* notice, this list of conditions and the following disclaimer in the
	16	* documentation and/or other materials provided with the distribution.
	17	* 3. All advertising materials mentioning features or use of this software
	18	* must display the following acknowledgement:
	19	* This product includes software developed by the University of
	20	* California, Berkeley and its contributors.
	21	* 4. Neither the name of the University nor the names of its contributors
	22	* may be used to endorse or promote products derived from this software
	23	* without specific prior written permission.
	24	*
	25	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	26	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	27	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	28	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	29	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	30	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	31	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	32	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	33	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	34	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	35	* SUCH DAMAGE.
	36	*
	37	* @(#)procfs.h 8.9 (Berkeley) 5/14/95
	38	*
	39	* From:
	40	* $FreeBSD: src/sys/miscfs/procfs/procfs.h,v 1.32.2.3 2002/01/22 17:22:59 nectar Exp $
	41	* $DragonFly: src/sys/vfs/procfs/procfs.h,v 1.8 2007/02/19 01:14:24 corecode Exp $
	42	*/
	43
	44	/*
	45	* The different types of node in a procfs filesystem
	46	*/
	47	typedef enum {
	48	Proot, /* the filesystem root */
	49	Pcurproc, /* symbolic link for curproc */
	50	Pproc, /* a process-specific sub-directory */
	51	Pfile, /* the executable file */
	52	Pmem, /* the process's memory image */
	53	Pregs, /* the process's register set */
	54	Pfpregs, /* the process's FP register set */
	55	Pdbregs, /* the process's debug register set */
	56	Pctl, /* process control */
	57	Pstatus, /* process status */
	58	Pnote, /* process notifier */
	59	Pnotepg, /* process group notifier */
	60	Pmap, /* memory map */
	61	Ptype, /* executable type */
	62	Pcmdline, /* command line */
	63	Prlimit /* resource limits */
	64	} pfstype;
	65
	66	/*
	67	* control data for the proc file system.
	68	*/
	69	struct pfsnode {
	70	struct pfsnode pfs_next; / next on list */
	71	struct vnode pfs_vnode; / vnode associated with this pfsnode */
	72	pfstype pfs_type; /* type of procfs node */
	73	pid_t pfs_pid; /* associated process */
	74	u_short pfs_mode; /* mode bits for stat() */
	75	u_long pfs_flags; /* open flags */
	76	u_long pfs_fileno; /* unique file id */
	77	pid_t pfs_lockowner; /* pfs lock owner */
	78	};
	79
	80	#define PROCFS_NOTELEN 64 /* max length of a note (/proc/$pid/note) */
	81	#define PROCFS_CTLLEN 8 /* max length of a ctl msg (/proc/$pid/ctl */
	82	#define PROCFS_NAMELEN 8 /* max length of a filename component */
	83
	84	/*
	85	* Kernel stuff follows
	86	*/
	87	#ifdef _KERNEL
	88	#define CNEQ(cnp, s, len) \
	89	((cnp)->cn_namelen == (len) && \
	90	(bcmp((s), (cnp)->cn_nameptr, (len)) == 0))
	91
	92	#define PROCFS_FILENO(pid, type) \
	93	(((type) < Pproc) ? \
	94	((type) + 2) : \
	95	((((pid)+1) << 4) + ((int) (type))))
	96
	97	#define CHECKIO(p1, p2) \
	98	((((p1)->p_ucred->cr_uid == (p2)->p_ucred->cr_ruid) && \
	99	((p1)->p_ucred->cr_ruid == (p2)->p_ucred->cr_ruid) && \
	100	((p1)->p_ucred->cr_svuid == (p2)->p_ucred->cr_ruid) && \
	101	((p2)->p_flag & (P_SUGID\|P_INEXEC)) == 0) \|\| \
	102	(priv_check_cred((p1)->p_ucred, PRIV_ROOT, PRISON_ROOT) == 0))
	103
	104	/*
	105	* Convert between pfsnode vnode
	106	*/
	107	#define VTOPFS(vp) ((struct pfsnode *)(vp)->v_data)
	108	#define PFSTOV(pfs) ((pfs)->pfs_vnode)
	109
	110	typedef struct vfs_namemap vfs_namemap_t;
	111	struct vfs_namemap {
	112	const char *nm_name;
	113	int nm_val;
	114	};
	115
	116	int vfs_getuserstr (struct uio , char , int *);
	117	vfs_namemap_t vfs_findname (vfs_namemap_t , char *, int);
	118
	119	/* <machine/reg.h> */
	120	struct reg;
	121	struct fpreg;
	122	struct dbreg;
	123
	124	#define PFIND(pid) ((pid) ? pfind(pid) : &proc0)
	125
	126	void procfs_exit (struct thread *);
	127	int procfs_freevp (struct vnode *);
	128	int procfs_allocvp (struct mount , struct vnode *, long, pfstype);
	129	struct vnode procfs_findtextvp (struct proc );
	130	int procfs_sstep (struct lwp *);
	131	int procfs_read_regs (struct lwp , struct reg );
	132	int procfs_write_regs (struct lwp , struct reg );
	133	int procfs_read_fpregs (struct lwp , struct fpreg );
	134	int procfs_write_fpregs (struct lwp , struct fpreg );
	135	int procfs_read_dbregs (struct lwp , struct dbreg );
	136	int procfs_write_dbregs (struct lwp , struct dbreg );
	137	int procfs_donote (struct proc , struct lwp , struct pfsnode pfsp, struct uio uio);
	138	int procfs_doregs (struct proc , struct lwp , struct pfsnode pfsp, struct uio uio);
	139	int procfs_dofpregs (struct proc , struct lwp , struct pfsnode pfsp, struct uio uio);
	140	int procfs_dodbregs (struct proc , struct lwp , struct pfsnode pfsp, struct uio uio);
	141	int procfs_domem (struct proc , struct lwp , struct pfsnode pfsp, struct uio uio);
	142	int procfs_doctl (struct proc , struct lwp , struct pfsnode pfsp, struct uio uio);
	143	int procfs_dostatus (struct proc , struct lwp , struct pfsnode pfsp, struct uio uio);
	144	int procfs_domap (struct proc , struct lwp , struct pfsnode pfsp, struct uio uio);
	145	int procfs_dotype (struct proc , struct lwp , struct pfsnode pfsp, struct uio uio);
	146	int procfs_docmdline (struct proc , struct lwp , struct pfsnode pfsp, struct uio uio);
	147	int procfs_dorlimit (struct proc , struct lwp , struct pfsnode pfsp, struct uio uio);
	148
	149	/* functions to check whether or not files should be displayed */
	150	int procfs_validfile (struct lwp *);
	151	int procfs_validfpregs (struct lwp *);
	152	int procfs_validregs (struct lwp *);
	153	int procfs_validdbregs (struct lwp *);
	154	int procfs_validmap (struct lwp *);
	155	int procfs_validtype (struct lwp *);
	156
	157	#define PROCFS_LOCKED 0x01
	158	#define PROCFS_WANT 0x02
	159
	160	int procfs_root (struct mount , struct vnode *);
	161	int procfs_rw (struct vop_read_args *);
	162
	163	#endif /* _KERNEL */