Annotation of sys/miscfs/procfs/procfs.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: procfs.h,v 1.24 2007/06/22 09:38:53 jasper Exp $ */
! 2: /* $NetBSD: procfs.h,v 1.17 1996/02/12 15:01:41 christos Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 1993 Jan-Simon Pendry
! 6: * Copyright (c) 1993
! 7: * The Regents of the University of California. All rights reserved.
! 8: *
! 9: * This code is derived from software contributed to Berkeley by
! 10: * Jan-Simon Pendry.
! 11: *
! 12: * Redistribution and use in source and binary forms, with or without
! 13: * modification, are permitted provided that the following conditions
! 14: * are met:
! 15: * 1. Redistributions of source code must retain the above copyright
! 16: * notice, this list of conditions and the following disclaimer.
! 17: * 2. Redistributions in binary form must reproduce the above copyright
! 18: * notice, this list of conditions and the following disclaimer in the
! 19: * documentation and/or other materials provided with the distribution.
! 20: * 3. Neither the name of the University nor the names of its contributors
! 21: * may be used to endorse or promote products derived from this software
! 22: * without specific prior written permission.
! 23: *
! 24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 34: * SUCH DAMAGE.
! 35: *
! 36: * @(#)procfs.h 8.7 (Berkeley) 6/15/94
! 37: */
! 38:
! 39: /*
! 40: * The different types of node in a procfs filesystem
! 41: */
! 42: typedef enum {
! 43: Proot, /* the filesystem root */
! 44: Pcurproc, /* symbolic link for curproc */
! 45: Pself, /* like curproc, but this is the Linux name */
! 46: Pproc, /* a process-specific sub-directory */
! 47: Pfile, /* the executable file */
! 48: Pmem, /* the process's memory image */
! 49: Pregs, /* the process's register set */
! 50: Pfpregs, /* the process's FP register set */
! 51: Pctl, /* process control */
! 52: Pstatus, /* process status */
! 53: Pnote, /* process notifier */
! 54: Pnotepg, /* process group notifier */
! 55: Pcmdline, /* process command line args */
! 56: Pmeminfo, /* system memory info (if -o linux) */
! 57: Pcpuinfo /* CPU info (if -o linux) */
! 58: } pfstype;
! 59:
! 60: /*
! 61: * control data for the proc file system.
! 62: */
! 63: struct pfsnode {
! 64: TAILQ_ENTRY(pfsnode) list;
! 65: struct vnode *pfs_vnode; /* vnode associated with this pfsnode */
! 66: pfstype pfs_type; /* type of procfs node */
! 67: pid_t pfs_pid; /* associated process */
! 68: mode_t pfs_mode; /* mode bits for stat() */
! 69: u_long pfs_flags; /* open flags */
! 70: u_long pfs_fileno; /* unique file id */
! 71: };
! 72:
! 73: #define PROCFS_NOTELEN 64 /* max length of a note (/proc/$pid/note) */
! 74: #define PROCFS_CTLLEN 8 /* max length of a ctl msg (/proc/$pid/ctl */
! 75:
! 76: /*
! 77: * Kernel stuff follows
! 78: */
! 79: #ifdef _KERNEL
! 80: #define CNEQ(cnp, s, len) \
! 81: ((cnp)->cn_namelen == (len) && \
! 82: (bcmp((s), (cnp)->cn_nameptr, (len)) == 0))
! 83:
! 84: #define UIO_MX 32
! 85:
! 86: #define PROCFS_FILENO(pid, type) \
! 87: (((type) < Pproc) ? \
! 88: ((type) + 4) : \
! 89: ((((pid)+1) << 5) + ((int) (type))))
! 90:
! 91: struct procfsmount {
! 92: void *pmnt_exechook;
! 93: int pmnt_flags;
! 94: };
! 95:
! 96: #define VFSTOPROC(mp) ((struct procfsmount *)(mp)->mnt_data)
! 97:
! 98: /*
! 99: * Convert between pfsnode vnode
! 100: */
! 101: #define VTOPFS(vp) ((struct pfsnode *)(vp)->v_data)
! 102: #define PFSTOV(pfs) ((pfs)->pfs_vnode)
! 103:
! 104: typedef struct vfs_namemap vfs_namemap_t;
! 105: struct vfs_namemap {
! 106: const char *nm_name;
! 107: int nm_val;
! 108: };
! 109:
! 110: int vfs_getuserstr(struct uio *, char *, int *);
! 111: const vfs_namemap_t *vfs_findname(const vfs_namemap_t *, char *, int);
! 112:
! 113: int procfs_allocvp(struct mount *, struct vnode **, pid_t, pfstype);
! 114: int procfs_doctl(struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio);
! 115: int procfs_dofpregs(struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio);
! 116: int procfs_donote(struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio);
! 117: int procfs_doregs(struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio);
! 118: int procfs_dostatus(struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio);
! 119: int procfs_docmdline(struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio);
! 120: int procfs_domeminfo(struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio);
! 121: int procfs_docpuinfo(struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio);
! 122: int procfs_domap(struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio, int);
! 123: int procfs_freevp(struct vnode *);
! 124: int procfs_getcpuinfstr(char *, int *);
! 125: int procfs_poll(void *);
! 126:
! 127: /* functions to check whether or not files should be displayed */
! 128: int procfs_validfile(struct proc *, struct mount *);
! 129: int procfs_validfpregs(struct proc *, struct mount *);
! 130: int procfs_validregs(struct proc *, struct mount *);
! 131: int procfs_validmap(struct proc *, struct mount *);
! 132:
! 133: int procfs_rw(void *);
! 134:
! 135: #define PROCFS_LOCKED 0x01
! 136: #define PROCFS_WANT 0x02
! 137:
! 138: extern int (**procfs_vnodeop_p)(void *);
! 139: extern const struct vfsops procfs_vfsops;
! 140:
! 141: struct vfsconf;
! 142:
! 143: int procfs_init(struct vfsconf *);
! 144: int procfs_root(struct mount *, struct vnode **);
! 145:
! 146: #endif /* _KERNEL */
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