+++ /dev/null
-/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
- *
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
- */
-/* $NetBSD: procfs_vnops.c,v 1.32 1995/02/03 16:18:55 mycroft Exp $ */
-
-/*
- * Copyright (c) 1993 Jan-Simon Pendry
- * Copyright (c) 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Jan-Simon Pendry.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)procfs_vnops.c 8.8 (Berkeley) 6/15/94
- */
-
-/*
- * procfs vnode interface
- */
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/time.h>
-#include <sys/kernel.h>
-#include <sys/file.h>
-#include <sys/proc.h>
-#include <sys/vnode.h>
-#include <sys/namei.h>
-#include <sys/malloc.h>
-#include <sys/dirent.h>
-#include <sys/resourcevar.h>
-#include <sys/ptrace.h>
-#include <vm/vm.h> /* for PAGE_SIZE */
-#include <machine/reg.h>
-#include <vfs/vfs_support.h>
-#include <miscfs/procfs/procfs.h>
-
-/*
- * Vnode Operations.
- *
- */
-
-/*
- * This is a list of the valid names in the
- * process-specific sub-directories. It is
- * used in procfs_lookup and procfs_readdir
- */
-struct proc_target {
- u_char pt_type;
- u_char pt_namlen;
- char *pt_name;
- pfstype pt_pfstype;
- int (*pt_valid) __P((struct proc *p));
-} proc_targets[] = {
-#define N(s) sizeof(s)-1, s
- /* name type validp */
- { DT_DIR, N("."), Pproc, NULL },
- { DT_DIR, N(".."), Proot, NULL },
- { DT_REG, N("file"), Pfile, procfs_validfile },
- { DT_REG, N("mem"), Pmem, NULL },
- { DT_REG, N("regs"), Pregs, procfs_validregs },
- { DT_REG, N("fpregs"), Pfpregs, procfs_validfpregs },
- { DT_REG, N("ctl"), Pctl, NULL },
- { DT_REG, N("status"), Pstatus, NULL },
- { DT_REG, N("note"), Pnote, NULL },
- { DT_REG, N("notepg"), Pnotepg, NULL },
-#undef N
-};
-static int nproc_targets = sizeof(proc_targets) / sizeof(proc_targets[0]);
-
-static pid_t atopid __P((const char *, u_int));
-
-/*
- * set things up for doing i/o on
- * the pfsnode (vp). (vp) is locked
- * on entry, and should be left locked
- * on exit.
- *
- * for procfs we don't need to do anything
- * in particular for i/o. all that is done
- * is to support exclusive open on process
- * memory images.
- */
-procfs_open(ap)
- struct vop_open_args /* {
- struct vnode *a_vp;
- int a_mode;
- struct ucred *a_cred;
- struct proc *a_p;
- } */ *ap;
-{
- struct pfsnode *pfs = VTOPFS(ap->a_vp);
-
- switch (pfs->pfs_type) {
- case Pmem:
- if (PFIND(pfs->pfs_pid) == 0)
- return (ENOENT); /* was ESRCH, jsp */
-
- if ((pfs->pfs_flags & FWRITE) && (ap->a_mode & O_EXCL) ||
- (pfs->pfs_flags & O_EXCL) && (ap->a_mode & FWRITE))
- return (EBUSY);
-
- if (ap->a_mode & FWRITE)
- pfs->pfs_flags = ap->a_mode & (FWRITE|O_EXCL);
-
- return (0);
-
- default:
- break;
- }
-
- return (0);
-}
-
-/*
- * close the pfsnode (vp) after doing i/o.
- * (vp) is not locked on entry or exit.
- *
- * nothing to do for procfs other than undo
- * any exclusive open flag (see _open above).
- */
-procfs_close(ap)
- struct vop_close_args /* {
- struct vnode *a_vp;
- int a_fflag;
- struct ucred *a_cred;
- struct proc *a_p;
- } */ *ap;
-{
- struct pfsnode *pfs = VTOPFS(ap->a_vp);
-
- switch (pfs->pfs_type) {
- case Pmem:
- if ((ap->a_fflag & FWRITE) && (pfs->pfs_flags & O_EXCL))
- pfs->pfs_flags &= ~(FWRITE|O_EXCL);
- break;
- }
-
- return (0);
-}
-
-/*
- * do an ioctl operation on pfsnode (vp).
- * (vp) is not locked on entry or exit.
- */
-procfs_ioctl(ap)
- struct vop_ioctl_args /* {
- struct vnode *a_vp;
- u_long a_command;
- caddr_t a_data;
- int a_fflag;
- struct ucred *a_cred;
- struct proc *a_p;
- } */ *ap;
-{
-
- return (ENOTTY);
-}
-
-/*
- * do block mapping for pfsnode (vp).
- * since we don't use the buffer cache
- * for procfs this function should never
- * be called. in any case, it's not clear
- * what part of the kernel ever makes use
- * of this function. for sanity, this is the
- * usual no-op bmap, although returning
- * (EIO) would be a reasonable alternative.
- */
-procfs_bmap(ap)
- struct vop_bmap_args /* {
- struct vnode *a_vp;
- daddr_t a_bn;
- struct vnode **a_vpp;
- daddr_t *a_bnp;
- } */ *ap;
-{
-
- if (ap->a_vpp != NULL)
- *ap->a_vpp = ap->a_vp;
- if (ap->a_bnp != NULL)
- *ap->a_bnp = ap->a_bn;
- return (0);
-}
-
-/*
- * _inactive is called when the pfsnode
- * is vrele'd and the reference count goes
- * to zero. (vp) will be on the vnode free
- * list, so to get it back vget() must be
- * used.
- *
- * for procfs, check if the process is still
- * alive and if it isn't then just throw away
- * the vnode by calling vgone(). this may
- * be overkill and a waste of time since the
- * chances are that the process will still be
- * there and PFIND is not free.
- *
- * (vp) is not locked on entry or exit.
- */
-procfs_inactive(ap)
- struct vop_inactive_args /* {
- struct vnode *a_vp;
- } */ *ap;
-{
- struct pfsnode *pfs = VTOPFS(ap->a_vp);
-
- if (PFIND(pfs->pfs_pid) == 0)
- vgone(ap->a_vp);
-
- return (0);
-}
-
-/*
- * _reclaim is called when getnewvnode()
- * wants to make use of an entry on the vnode
- * free list. at this time the filesystem needs
- * to free any private data and remove the node
- * from any private lists.
- */
-procfs_reclaim(ap)
- struct vop_reclaim_args /* {
- struct vnode *a_vp;
- } */ *ap;
-{
-
- return (procfs_freevp(ap->a_vp));
-}
-
-/*
- * Return POSIX pathconf information applicable to special devices.
- */
-procfs_pathconf(ap)
- struct vop_pathconf_args /* {
- struct vnode *a_vp;
- int a_name;
- register_t *a_retval;
- } */ *ap;
-{
-
- switch (ap->a_name) {
- case _PC_LINK_MAX:
- *ap->a_retval = LINK_MAX;
- return (0);
- case _PC_MAX_CANON:
- *ap->a_retval = MAX_CANON;
- return (0);
- case _PC_MAX_INPUT:
- *ap->a_retval = MAX_INPUT;
- return (0);
- case _PC_PIPE_BUF:
- *ap->a_retval = PIPE_BUF;
- return (0);
- case _PC_CHOWN_RESTRICTED:
- *ap->a_retval = 1;
- return (0);
- case _PC_VDISABLE:
- *ap->a_retval = _POSIX_VDISABLE;
- return (0);
- default:
- return (EINVAL);
- }
- /* NOTREACHED */
-}
-
-/*
- * _print is used for debugging.
- * just print a readable description
- * of (vp).
- */
-procfs_print(ap)
- struct vop_print_args /* {
- struct vnode *a_vp;
- } */ *ap;
-{
- struct pfsnode *pfs = VTOPFS(ap->a_vp);
-
- printf("tag VT_PROCFS, type %s, pid %d, mode %x, flags %x\n",
- pfs->pfs_type, pfs->pfs_pid, pfs->pfs_mode, pfs->pfs_flags);
-}
-
-/*
- * _abortop is called when operations such as
- * rename and create fail. this entry is responsible
- * for undoing any side-effects caused by the lookup.
- * this will always include freeing the pathname buffer.
- */
-procfs_abortop(ap)
- struct vop_abortop_args /* {
- struct vnode *a_dvp;
- struct componentname *a_cnp;
- } */ *ap;
-{
-
- if ((ap->a_cnp->cn_flags & (HASBUF | SAVESTART)) == HASBUF)
- FREE_ZONE(ap->a_cnp->cn_pnbuf, ap->a_cnp->cn_pnlen, M_NAMEI);
- return (0);
-}
-
-/*
- * generic entry point for unsupported operations
- */
-procfs_badop()
-{
-
- return (EIO);
-}
-
-/*
- * Invent attributes for pfsnode (vp) and store
- * them in (vap).
- * Directories lengths are returned as zero since
- * any real length would require the genuine size
- * to be computed, and nothing cares anyway.
- *
- * this is relatively minimal for procfs.
- */
-procfs_getattr(ap)
- struct vop_getattr_args /* {
- struct vnode *a_vp;
- struct vattr *a_vap;
- struct ucred *a_cred;
- struct proc *a_p;
- } */ *ap;
-{
- struct pfsnode *pfs = VTOPFS(ap->a_vp);
- struct vattr *vap = ap->a_vap;
- struct proc *procp;
- int error;
-
- /* first check the process still exists */
- switch (pfs->pfs_type) {
- case Proot:
- case Pcurproc:
- procp = 0;
- break;
-
- default:
- procp = PFIND(pfs->pfs_pid);
- if (procp == 0)
- return (ENOENT);
- }
-
- error = 0;
-
- /* start by zeroing out the attributes */
- VATTR_NULL(vap);
-
- /* next do all the common fields */
- vap->va_type = ap->a_vp->v_type;
- vap->va_mode = pfs->pfs_mode;
- vap->va_fileid = pfs->pfs_fileno;
- vap->va_flags = 0;
- vap->va_blocksize = PAGE_SIZE;
- vap->va_bytes = vap->va_size = 0;
-
- /*
- * Make all times be current TOD.
- * It would be possible to get the process start
- * time from the p_stat structure, but there's
- * no "file creation" time stamp anyway, and the
- * p_stat structure is not addressible if u. gets
- * swapped out for that process.
- *
- * XXX
- * Note that microtime() returns a timeval, not a timespec.
- */
- microtime(&vap->va_ctime);
- vap->va_atime = vap->va_mtime = vap->va_ctime;
-
- /*
- * If the process has exercised some setuid or setgid
- * privilege, then rip away read/write permission so
- * that only root can gain access.
- */
- switch (pfs->pfs_type) {
- case Pmem:
- case Pregs:
- case Pfpregs:
- if (procp->p_flag & P_SUGID)
- vap->va_mode &= ~((VREAD|VWRITE)|
- ((VREAD|VWRITE)>>3)|
- ((VREAD|VWRITE)>>6));
- case Pctl:
- case Pstatus:
- case Pnote:
- case Pnotepg:
- vap->va_nlink = 1;
- vap->va_uid = procp->p_ucred->cr_uid;
- vap->va_gid = procp->p_ucred->cr_gid;
- break;
- }
-
- /*
- * now do the object specific fields
- *
- * The size could be set from struct reg, but it's hardly
- * worth the trouble, and it puts some (potentially) machine
- * dependent data into this machine-independent code. If it
- * becomes important then this function should break out into
- * a per-file stat function in the corresponding .c file.
- */
-
- switch (pfs->pfs_type) {
- case Proot:
- /*
- * Set nlink to 1 to tell fts(3) we don't actually know.
- */
- vap->va_nlink = 1;
- vap->va_uid = 0;
- vap->va_gid = 0;
- vap->va_size = vap->va_bytes = DEV_BSIZE;
- break;
-
- case Pcurproc: {
- char buf[16]; /* should be enough */
- vap->va_nlink = 1;
- vap->va_uid = 0;
- vap->va_gid = 0;
- vap->va_size = vap->va_bytes =
- sprintf(buf, "%ld", (long)curproc->p_pid);
- break;
- }
-
- case Pproc:
- vap->va_nlink = 2;
- vap->va_uid = procp->p_ucred->cr_uid;
- vap->va_gid = procp->p_ucred->cr_gid;
- vap->va_size = vap->va_bytes = DEV_BSIZE;
- break;
-
- case Pfile:
- error = EOPNOTSUPP;
- break;
-
- case Pmem:
- vap->va_bytes = vap->va_size =
- ctob(procp->p_vmspace->vm_tsize +
- procp->p_vmspace->vm_dsize +
- procp->p_vmspace->vm_ssize);
- break;
-
-#if defined(PT_GETREGS) || defined(PT_SETREGS)
- case Pregs:
- vap->va_bytes = vap->va_size = sizeof(struct reg);
- break;
-#endif
-
-#if defined(PT_GETFPREGS) || defined(PT_SETFPREGS)
- case Pfpregs:
- vap->va_bytes = vap->va_size = sizeof(struct fpreg);
- break;
-#endif
-
- case Pctl:
- case Pstatus:
- case Pnote:
- case Pnotepg:
- break;
-
- default:
- panic("procfs_getattr");
- }
-
- return (error);
-}
-
-procfs_setattr(ap)
- struct vop_setattr_args /* {
- struct vnode *a_vp;
- struct vattr *a_vap;
- struct ucred *a_cred;
- struct proc *a_p;
- } */ *ap;
-{
- /*
- * just fake out attribute setting
- * it's not good to generate an error
- * return, otherwise things like creat()
- * will fail when they try to set the
- * file length to 0. worse, this means
- * that echo $note > /proc/$pid/note will fail.
- */
-
- return (0);
-}
-
-/*
- * implement access checking.
- *
- * actually, the check for super-user is slightly
- * broken since it will allow read access to write-only
- * objects. this doesn't cause any particular trouble
- * but does mean that the i/o entry points need to check
- * that the operation really does make sense.
- */
-procfs_access(ap)
- struct vop_access_args /* {
- struct vnode *a_vp;
- int a_mode;
- struct ucred *a_cred;
- struct proc *a_p;
- } */ *ap;
-{
- struct vattr va;
- int error;
-
- if (error = VOP_GETATTR(ap->a_vp, &va, ap->a_cred, ap->a_p))
- return (error);
-
- return (vaccess(va.va_mode, va.va_uid, va.va_gid, ap->a_mode,
- ap->a_cred));
-}
-
-/*
- * lookup. this is incredibly complicated in the
- * general case, however for most pseudo-filesystems
- * very little needs to be done.
- *
- * unless you want to get a migraine, just make sure your
- * filesystem doesn't do any locking of its own. otherwise
- * read and inwardly digest ufs_lookup().
- */
-procfs_lookup(ap)
- struct vop_lookup_args /* {
- struct vnode * a_dvp;
- struct vnode ** a_vpp;
- struct componentname * a_cnp;
- } */ *ap;
-{
- struct componentname *cnp = ap->a_cnp;
- struct vnode **vpp = ap->a_vpp;
- struct vnode *dvp = ap->a_dvp;
- char *pname = cnp->cn_nameptr;
- struct proc_target *pt;
- struct vnode *fvp;
- pid_t pid;
- struct pfsnode *pfs;
- struct proc *p;
- int i;
-
- *vpp = NULL;
-
- if (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME)
- return (EROFS);
-
- if (cnp->cn_namelen == 1 && *pname == '.') {
- *vpp = dvp;
- VREF(dvp);
- /*VOP_LOCK(dvp);*/
- return (0);
- }
-
- pfs = VTOPFS(dvp);
- switch (pfs->pfs_type) {
- case Proot:
- if (cnp->cn_flags & ISDOTDOT)
- return (EIO);
-
- if (CNEQ(cnp, "curproc", 7))
- return (procfs_allocvp(dvp->v_mount, vpp, 0, Pcurproc));
-
- pid = atopid(pname, cnp->cn_namelen);
- if (pid == NO_PID)
- break;
-
- p = PFIND(pid);
- if (p == 0)
- break;
-
- return (procfs_allocvp(dvp->v_mount, vpp, pid, Pproc));
-
- case Pproc:
- if (cnp->cn_flags & ISDOTDOT)
- return (procfs_root(dvp->v_mount, vpp));
-
- p = PFIND(pfs->pfs_pid);
- if (p == 0)
- break;
-
- for (pt = proc_targets, i = 0; i < nproc_targets; pt++, i++) {
- if (cnp->cn_namelen == pt->pt_namlen &&
- bcmp(pt->pt_name, pname, cnp->cn_namelen) == 0 &&
- (pt->pt_valid == NULL || (*pt->pt_valid)(p)))
- goto found;
- }
- break;
-
- found:
- if (pt->pt_pfstype == Pfile) {
- fvp = procfs_findtextvp(p);
- /* We already checked that it exists. */
- VREF(fvp);
- VOP_LOCK(fvp);
- *vpp = fvp;
- return (0);
- }
-
- return (procfs_allocvp(dvp->v_mount, vpp, pfs->pfs_pid,
- pt->pt_pfstype));
-
- default:
- return (ENOTDIR);
- }
-
- return (cnp->cn_nameiop == LOOKUP ? ENOENT : EROFS);
-}
-
-int
-procfs_validfile(p)
- struct proc *p;
-{
-
- return (procfs_findtextvp(p) != NULLVP);
-}
-
-/*
- * readdir returns directory entries from pfsnode (vp).
- *
- * the strategy here with procfs is to generate a single
- * directory entry at a time (struct pfsdent) and then
- * copy that out to userland using uiomove. a more efficent
- * though more complex implementation, would try to minimize
- * the number of calls to uiomove(). for procfs, this is
- * hardly worth the added code complexity.
- *
- * this should just be done through read()
- */
-procfs_readdir(ap)
- struct vop_readdir_args /* {
- struct vnode *a_vp;
- struct uio *a_uio;
- struct ucred *a_cred;
- int *a_eofflag;
- u_long *a_cookies;
- int a_ncookies;
- } */ *ap;
-{
- struct uio *uio = ap->a_uio;
- struct pfsdent d;
- struct pfsdent *dp = &d;
- struct pfsnode *pfs;
- int error;
- int count;
- int i;
-
- /*
- * We don't allow exporting procfs mounts, and currently local
- * requests do not need cookies.
- */
- if (ap->a_ncookies)
- panic("procfs_readdir: not hungry");
-
- pfs = VTOPFS(ap->a_vp);
-
- if (uio->uio_resid < UIO_MX)
- return (EINVAL);
- if (uio->uio_offset & (UIO_MX-1))
- return (EINVAL);
- if (uio->uio_offset < 0)
- return (EINVAL);
-
- error = 0;
- count = 0;
- i = uio->uio_offset / UIO_MX;
-
- switch (pfs->pfs_type) {
- /*
- * this is for the process-specific sub-directories.
- * all that is needed to is copy out all the entries
- * from the procent[] table (top of this file).
- */
- case Pproc: {
- struct proc *p;
- struct proc_target *pt;
-
- p = PFIND(pfs->pfs_pid);
- if (p == NULL)
- break;
-
- for (pt = &proc_targets[i];
- uio->uio_resid >= UIO_MX && i < nproc_targets; pt++, i++) {
- if (pt->pt_valid && (*pt->pt_valid)(p) == 0)
- continue;
-
- dp->d_reclen = UIO_MX;
- dp->d_fileno = PROCFS_FILENO(pfs->pfs_pid, pt->pt_pfstype);
- dp->d_namlen = pt->pt_namlen;
- bcopy(pt->pt_name, dp->d_name, pt->pt_namlen + 1);
- dp->d_type = pt->pt_type;
-
- if (error = uiomove((caddr_t)dp, UIO_MX, uio))
- break;
- }
-
- break;
- }
-
- /*
- * this is for the root of the procfs filesystem
- * what is needed is a special entry for "curproc"
- * followed by an entry for each process on allproc
-#ifdef PROCFS_ZOMBIE
- * and zombproc.
-#endif
- */
-
- case Proot: {
-#ifdef PROCFS_ZOMBIE
- int doingzomb = 0;
-#endif
- int pcnt = 0;
- volatile struct proc *p = allproc.lh_first;
-
- again:
- for (; p && uio->uio_resid >= UIO_MX; i++, pcnt++) {
- bzero((char *) dp, UIO_MX);
- dp->d_reclen = UIO_MX;
-
- switch (i) {
- case 0: /* `.' */
- case 1: /* `..' */
- dp->d_fileno = PROCFS_FILENO(0, Proot);
- dp->d_namlen = i + 1;
- bcopy("..", dp->d_name, dp->d_namlen);
- dp->d_name[i + 1] = '\0';
- dp->d_type = DT_DIR;
- break;
-
- case 2:
- dp->d_fileno = PROCFS_FILENO(0, Pcurproc);
- dp->d_namlen = 7;
- bcopy("curproc", dp->d_name, 8);
- dp->d_type = DT_LNK;
- break;
-
- default:
- while (pcnt < i) {
- pcnt++;
- p = p->p_list.le_next;
- if (!p)
- goto done;
- }
- dp->d_fileno = PROCFS_FILENO(p->p_pid, Pproc);
- dp->d_namlen = sprintf(dp->d_name, "%ld",
- (long)p->p_pid);
- dp->d_type = DT_REG;
- p = p->p_list.le_next;
- break;
- }
-
- if (error = uiomove((caddr_t)dp, UIO_MX, uio))
- break;
- }
- done:
-
-#ifdef PROCFS_ZOMBIE
- if (p == 0 && doingzomb == 0) {
- doingzomb = 1;
- p = zombproc.lh_first;
- goto again;
- }
-#endif
-
- break;
-
- }
-
- default:
- error = ENOTDIR;
- break;
- }
-
- uio->uio_offset = i * UIO_MX;
-
- return (error);
-}
-
-/*
- * readlink reads the link of `curproc'
- */
-procfs_readlink(ap)
- struct vop_readlink_args *ap;
-{
- struct uio *uio = ap->a_uio;
- char buf[16]; /* should be enough */
- int len;
-
- if (VTOPFS(ap->a_vp)->pfs_fileno != PROCFS_FILENO(0, Pcurproc))
- return (EINVAL);
-
- len = sprintf(buf, "%ld", (long)curproc->p_pid);
-
- return (uiomove((caddr_t)buf, len, ap->a_uio));
-}
-
-/*
- * convert decimal ascii to pid_t
- */
-static pid_t
-atopid(b, len)
- const char *b;
- u_int len;
-{
- pid_t p = 0;
-
- while (len--) {
- char c = *b++;
- if (c < '0' || c > '9')
- return (NO_PID);
- p = 10 * p + (c - '0');
- if (p > PID_MAX)
- return (NO_PID);
- }
-
- return (p);
-}
-
-/*
- * procfs vnode operations.
- */
-
-#define VOPFUNC int (*)(void *)
-
-int (**procfs_vnodeop_p)(void *);
-struct vnodeopv_entry_desc procfs_vnodeop_entries[] = {
- { &vop_default_desc, (VOPFUNC)vn_default_error },
- { &vop_lookup_desc, (VOPFUNC)procfs_lookup }, /* lookup */
- { &vop_create_desc, (VOPFUNC)procfs_create }, /* create */
- { &vop_mknod_desc, (VOPFUNC)procfs_mknod }, /* mknod */
- { &vop_open_desc, (VOPFUNC)procfs_open }, /* open */
- { &vop_close_desc, (VOPFUNC)procfs_close }, /* close */
- { &vop_access_desc, (VOPFUNC)procfs_access }, /* access */
- { &vop_getattr_desc, (VOPFUNC)procfs_getattr }, /* getattr */
- { &vop_setattr_desc, (VOPFUNC)procfs_setattr }, /* setattr */
- { &vop_read_desc, (VOPFUNC)procfs_read }, /* read */
- { &vop_write_desc, (VOPFUNC)procfs_write }, /* write */
- { &vop_ioctl_desc, (VOPFUNC)procfs_ioctl }, /* ioctl */
- { &vop_select_desc, (VOPFUNC)procfs_select }, /* select */
- { &vop_mmap_desc, (VOPFUNC)procfs_mmap }, /* mmap */
- { &vop_fsync_desc, (VOPFUNC)procfs_fsync }, /* fsync */
- { &vop_seek_desc, (VOPFUNC)procfs_seek }, /* seek */
- { &vop_remove_desc, (VOPFUNC)procfs_remove }, /* remove */
- { &vop_link_desc, (VOPFUNC)procfs_link }, /* link */
- { &vop_rename_desc, (VOPFUNC)procfs_rename }, /* rename */
- { &vop_mkdir_desc, (VOPFUNC)procfs_mkdir }, /* mkdir */
- { &vop_rmdir_desc, (VOPFUNC)procfs_rmdir }, /* rmdir */
- { &vop_symlink_desc, (VOPFUNC)procfs_symlink }, /* symlink */
- { &vop_readdir_desc, (VOPFUNC)procfs_readdir }, /* readdir */
- { &vop_readlink_desc, (VOPFUNC)procfs_readlink }, /* readlink */
- { &vop_abortop_desc, (VOPFUNC)procfs_abortop }, /* abortop */
- { &vop_inactive_desc, (VOPFUNC)procfs_inactive }, /* inactive */
- { &vop_reclaim_desc, (VOPFUNC)procfs_reclaim }, /* reclaim */
- { &vop_lock_desc, (VOPFUNC)procfs_lock }, /* lock */
- { &vop_unlock_desc, (VOPFUNC)procfs_unlock }, /* unlock */
- { &vop_bmap_desc, (VOPFUNC)procfs_bmap }, /* bmap */
- { &vop_strategy_desc, (VOPFUNC)procfs_strategy }, /* strategy */
- { &vop_print_desc, (VOPFUNC)procfs_print }, /* print */
- { &vop_islocked_desc, (VOPFUNC)procfs_islocked }, /* islocked */
- { &vop_pathconf_desc, (VOPFUNC)procfs_pathconf }, /* pathconf */
- { &vop_advlock_desc, (VOPFUNC)procfs_advlock }, /* advlock */
- { &vop_blkatoff_desc, (VOPFUNC)procfs_blkatoff }, /* blkatoff */
- { &vop_valloc_desc, (VOPFUNC)procfs_valloc }, /* valloc */
- { &vop_vfree_desc, (VOPFUNC)procfs_vfree }, /* vfree */
- { &vop_truncate_desc, (VOPFUNC)procfs_truncate }, /* truncate */
- { &vop_update_desc, (VOPFUNC)procfs_update }, /* update */
- { &vop_copyfile_desc, (VOPFUNC)err_copyfile }, /* Copyfile */
-{ (struct vnodeop_desc*)NULL, (int(*)())NULL }
-};
-struct vnodeopv_desc procfs_vnodeop_opv_desc =
- { &procfs_vnodeop_p, procfs_vnodeop_entries };
projects / apple / xnu.git / blobdiff