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 * %sccs.include.redist.c% 10 * 11 * @(#)procfs.h 8.9 (Berkeley) 05/14/95 12 * 13 * From: 14 * $Id: procfs.h,v 3.2 1993/12/15 09:40:17 jsp Exp $ 15 */ 16 17 /* 18 * The different types of node in a procfs filesystem 19 */ 20 typedef enum { 21 Proot, /* the filesystem root */ 22 Pcurproc, /* symbolic link for curproc */ 23 Pproc, /* a process-specific sub-directory */ 24 Pfile, /* the executable file */ 25 Pmem, /* the process's memory image */ 26 Pregs, /* the process's register set */ 27 Pfpregs, /* the process's FP register set */ 28 Pctl, /* process control */ 29 Pstatus, /* process status */ 30 Pnote, /* process notifier */ 31 Pnotepg /* process group notifier */ 32 } pfstype; 33 34 /* 35 * control data for the proc file system. 36 */ 37 struct pfsnode { 38 struct pfsnode *pfs_next; /* next on list */ 39 struct vnode *pfs_vnode; /* vnode associated with this pfsnode */ 40 pfstype pfs_type; /* type of procfs node */ 41 pid_t pfs_pid; /* associated process */ 42 u_short pfs_mode; /* mode bits for stat() */ 43 u_long pfs_flags; /* open flags */ 44 u_long pfs_fileno; /* unique file id */ 45 }; 46 47 #define PROCFS_NOTELEN 64 /* max length of a note (/proc/$pid/note) */ 48 #define PROCFS_CTLLEN 8 /* max length of a ctl msg (/proc/$pid/ctl */ 49 50 /* 51 * Kernel stuff follows 52 */ 53 #ifdef KERNEL 54 #define CNEQ(cnp, s, len) \ 55 ((cnp)->cn_namelen == (len) && \ 56 (bcmp((s), (cnp)->cn_nameptr, (len)) == 0)) 57 58 /* 59 * Format of a directory entry in /proc, ... 60 * This must map onto struct dirent (see <dirent.h>) 61 */ 62 #define PROCFS_NAMELEN 8 63 struct pfsdent { 64 u_long d_fileno; 65 u_short d_reclen; 66 u_char d_type; 67 u_char d_namlen; 68 char d_name[PROCFS_NAMELEN]; 69 }; 70 #define UIO_MX sizeof(struct pfsdent) 71 #define PROCFS_FILENO(pid, type) \ 72 (((type) < Pproc) ? \ 73 ((type) + 2) : \ 74 ((((pid)+1) << 4) + ((int) (type)))) 75 76 /* 77 * Convert between pfsnode vnode 78 */ 79 #define VTOPFS(vp) ((struct pfsnode *)(vp)->v_data) 80 #define PFSTOV(pfs) ((pfs)->pfs_vnode) 81 82 typedef struct vfs_namemap vfs_namemap_t; 83 struct vfs_namemap { 84 const char *nm_name; 85 int nm_val; 86 }; 87 88 int vfs_getuserstr __P((struct uio *, char *, int *)); 89 vfs_namemap_t *vfs_findname __P((vfs_namemap_t *, char *, int)); 90 91 /* <machine/reg.h> */ 92 struct reg; 93 struct fpreg; 94 95 #define PFIND(pid) ((pid) ? pfind(pid) : &proc0) 96 int procfs_freevp __P((struct vnode *)); 97 int procfs_allocvp __P((struct mount *, struct vnode **, long, pfstype)); 98 struct vnode *procfs_findtextvp __P((struct proc *)); 99 int procfs_sstep __P((struct proc *, int)); 100 void procfs_fix_sstep __P((struct proc *)); 101 int procfs_read_regs __P((struct proc *, struct reg *)); 102 int procfs_write_regs __P((struct proc *, struct reg *)); 103 int procfs_read_fpregs __P((struct proc *, struct fpreg *)); 104 int procfs_write_fpregs __P((struct proc *, struct fpreg *)); 105 int procfs_donote __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio)); 106 int procfs_doregs __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio)); 107 int procfs_dofpregs __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio)); 108 int procfs_domem __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio)); 109 int procfs_doctl __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio)); 110 int procfs_dostatus __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio)); 111 112 /* functions to check whether or not files should be displayed */ 113 int procfs_validfile __P((struct proc *)); 114 int procfs_validfpregs __P((struct proc *)); 115 int procfs_validregs __P((struct proc *)); 116 117 #define PROCFS_LOCKED 0x01 118 #define PROCFS_WANT 0x02 119 120 extern int (**procfs_vnodeop_p)(); 121 extern struct vfsops procfs_vfsops; 122 123 /* 124 * Prototypes for procfs vnode ops 125 */ 126 int procfs_badop(); /* varargs */ 127 int procfs_rw __P((struct vop_read_args *)); 128 int procfs_lookup __P((struct vop_lookup_args *)); 129 #define procfs_create ((int (*) __P((struct vop_create_args *))) procfs_badop) 130 #define procfs_mknod ((int (*) __P((struct vop_mknod_args *))) procfs_badop) 131 int procfs_open __P((struct vop_open_args *)); 132 int procfs_close __P((struct vop_close_args *)); 133 int procfs_access __P((struct vop_access_args *)); 134 int procfs_getattr __P((struct vop_getattr_args *)); 135 int procfs_setattr __P((struct vop_setattr_args *)); 136 #define procfs_read procfs_rw 137 #define procfs_write procfs_rw 138 int procfs_ioctl __P((struct vop_ioctl_args *)); 139 #define procfs_select ((int (*) __P((struct vop_select_args *))) procfs_badop) 140 #define procfs_mmap ((int (*) __P((struct vop_mmap_args *))) procfs_badop) 141 #define procfs_revoke vop_revoke 142 #define procfs_fsync ((int (*) __P((struct vop_fsync_args *))) procfs_badop) 143 #define procfs_seek ((int (*) __P((struct vop_seek_args *))) procfs_badop) 144 #define procfs_remove ((int (*) __P((struct vop_remove_args *))) procfs_badop) 145 #define procfs_link ((int (*) __P((struct vop_link_args *))) procfs_badop) 146 #define procfs_rename ((int (*) __P((struct vop_rename_args *))) procfs_badop) 147 #define procfs_mkdir ((int (*) __P((struct vop_mkdir_args *))) procfs_badop) 148 #define procfs_rmdir ((int (*) __P((struct vop_rmdir_args *))) procfs_badop) 149 #define procfs_symlink ((int (*) __P((struct vop_symlink_args *))) procfs_badop) 150 int procfs_readdir __P((struct vop_readdir_args *)); 151 int procfs_readlink __P((struct vop_readlink_args *)); 152 int procfs_abortop __P((struct vop_abortop_args *)); 153 int procfs_inactive __P((struct vop_inactive_args *)); 154 int procfs_reclaim __P((struct vop_reclaim_args *)); 155 #define procfs_lock ((int (*) __P((struct vop_lock_args *)))vop_nolock) 156 #define procfs_unlock ((int (*) __P((struct vop_unlock_args *)))vop_nounlock) 157 int procfs_bmap __P((struct vop_bmap_args *)); 158 #define procfs_strategy ((int (*) __P((struct vop_strategy_args *))) procfs_badop) 159 int procfs_print __P((struct vop_print_args *)); 160 #define procfs_islocked \ 161 ((int (*) __P((struct vop_islocked_args *)))vop_noislocked) 162 #define procfs_advlock ((int (*) __P((struct vop_advlock_args *))) procfs_badop) 163 #define procfs_blkatoff ((int (*) __P((struct vop_blkatoff_args *))) procfs_badop) 164 #define procfs_valloc ((int (*) __P((struct vop_valloc_args *))) procfs_badop) 165 #define procfs_vfree ((int (*) __P((struct vop_vfree_args *))) nullop) 166 #define procfs_truncate ((int (*) __P((struct vop_truncate_args *))) procfs_badop) 167 #define procfs_update ((int (*) __P((struct vop_update_args *))) nullop) 168 #endif /* KERNEL */ 169