2 * Copyright (c) 1993 Jan-Simon Pendry
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6 * This code is derived from software contributed to Berkeley by
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37 * @(#)procfs.h 8.9 (Berkeley) 5/14/95
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 1.2 2003/06/17 04:28:42 dillon Exp $
45 * The different types of node in a procfs filesystem
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 */
67 * control data for the proc file system.
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 */
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 */
85 * Kernel stuff follows
88 #define CNEQ(cnp, s, len) \
89 ((cnp)->cn_namelen == (len) && \
90 (bcmp((s), (cnp)->cn_nameptr, (len)) == 0))
92 #define PROCFS_FILENO(pid, type) \
95 ((((pid)+1) << 4) + ((int) (type))))
97 #define CHECKIO(p1, p2) \
98 ((((p1)->p_cred->pc_ucred->cr_uid == (p2)->p_cred->p_ruid) && \
99 ((p1)->p_cred->p_ruid == (p2)->p_cred->p_ruid) && \
100 ((p1)->p_cred->p_svuid == (p2)->p_cred->p_ruid) && \
101 ((p2)->p_flag & (P_SUGID|P_INEXEC)) == 0) || \
102 (suser_xxx((p1)->p_cred->pc_ucred, (p1), PRISON_ROOT) == 0))
105 * Convert between pfsnode vnode
107 #define VTOPFS(vp) ((struct pfsnode *)(vp)->v_data)
108 #define PFSTOV(pfs) ((pfs)->pfs_vnode)
110 typedef struct vfs_namemap vfs_namemap_t;
116 int vfs_getuserstr __P((struct uio *, char *, int *));
117 vfs_namemap_t *vfs_findname __P((vfs_namemap_t *, char *, int));
119 /* <machine/reg.h> */
124 #define PFIND(pid) ((pid) ? pfind(pid) : &proc0)
126 void procfs_exit __P((struct proc *));
127 int procfs_freevp __P((struct vnode *));
128 int procfs_allocvp __P((struct mount *, struct vnode **, long, pfstype));
129 struct vnode *procfs_findtextvp __P((struct proc *));
130 int procfs_sstep __P((struct proc *));
131 void procfs_fix_sstep __P((struct proc *));
132 int procfs_read_regs __P((struct proc *, struct reg *));
133 int procfs_write_regs __P((struct proc *, struct reg *));
134 int procfs_read_fpregs __P((struct proc *, struct fpreg *));
135 int procfs_write_fpregs __P((struct proc *, struct fpreg *));
136 int procfs_read_dbregs __P((struct proc *, struct dbreg *));
137 int procfs_write_dbregs __P((struct proc *, struct dbreg *));
138 int procfs_donote __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio));
139 int procfs_doregs __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio));
140 int procfs_dofpregs __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio));
141 int procfs_dodbregs __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio));
142 int procfs_domem __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio));
143 int procfs_doctl __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio));
144 int procfs_dostatus __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio));
145 int procfs_domap __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio));
146 int procfs_dotype __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio));
147 int procfs_docmdline __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio));
148 int procfs_dorlimit __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio));
150 /* functions to check whether or not files should be displayed */
151 int procfs_validfile __P((struct proc *));
152 int procfs_validfpregs __P((struct proc *));
153 int procfs_validregs __P((struct proc *));
154 int procfs_validdbregs __P((struct proc *));
155 int procfs_validmap __P((struct proc *));
156 int procfs_validtype __P((struct proc *));
158 #define PROCFS_LOCKED 0x01
159 #define PROCFS_WANT 0x02
161 extern vop_t **procfs_vnodeop_p;
163 int procfs_root __P((struct mount *, struct vnode **));
164 int procfs_rw __P((struct vop_read_args *));