PR/7143: Jaromir Docelek: Add procfs/cmdline from Linux emulation
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christos
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@ -1,4 +1,4 @@
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/* $NetBSD: README,v 1.4 1994/06/29 06:34:43 cgd Exp $ */
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/* $NetBSD: README,v 1.5 1999/03/12 18:45:40 christos Exp $ */
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saute procfs lyonnais
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@ -47,6 +47,8 @@ are:
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will get the "right" register values.
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a multi-proc kernel would need to do some
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synchronisation.
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cmdline - r/o. process command line parameters, separated
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by NULLs
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this then looks like:
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@ -76,13 +78,17 @@ total 0
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3273 dr-xr-xr-x 2 jsp staff 0 Sep 21 15:06 curproc
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% ls -li /proc/curproc
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total 408
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3341 --w------- 1 jsp staff 0 Sep 21 15:06 ctl
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1554 -r-xr-xr-x 1 bin bin 90112 Mar 29 04:52 file
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3339 -rw------- 1 jsp staff 118784 Sep 21 15:06 mem
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3343 --w------- 1 jsp staff 0 Sep 21 15:06 note
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3344 --w------- 1 jsp staff 0 Sep 21 15:06 notepg
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3340 -rw------- 1 jsp staff 0 Sep 21 15:06 regs
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3342 -r--r--r-- 1 jsp staff 0 Sep 21 15:06 status
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total 460
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7692 -r--r--r-- 1 dolecek staff 0 Mar 12 12:02 cmdline
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7687 --w------- 1 dolecek staff 0 Mar 12 12:02 ctl
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2003 -r-xr-xr-x 1 root wheel 180224 Jan 31 23:32 file*
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7686 -rw------- 1 dolecek staff 108 Mar 12 12:02 fpregs
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7691 -r--r--r-- 1 dolecek staff 0 Mar 12 12:02 map
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7684 -rw------- 1 dolecek staff 282624 Mar 12 12:02 mem
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7689 --w------- 1 dolecek staff 0 Mar 12 12:02 note
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7690 --w------- 1 dolecek staff 0 Mar 12 12:02 notepg
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7685 -rw------- 1 dolecek staff 64 Mar 12 12:02 regs
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7688 -r--r--r-- 1 dolecek staff 0 Mar 12 12:02 status
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% df /proc/curproc /proc/curproc/file
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Filesystem 512-blocks Used Avail Capacity Mounted on
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proc 2 2 0 100% /proc
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@ -1,4 +1,4 @@
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/* $NetBSD: procfs.h,v 1.23 1999/01/25 02:20:08 msaitoh Exp $ */
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/* $NetBSD: procfs.h,v 1.24 1999/03/12 18:45:40 christos Exp $ */
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/*
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* Copyright (c) 1993 Jan-Simon Pendry
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@ -54,7 +54,8 @@ typedef enum {
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Pstatus, /* process status */
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Pnote, /* process notifier */
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Pnotepg, /* process group notifier */
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Pmap /* memory map */
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Pmap, /* memory map */
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Pcmdline /* process command line args */
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} pfstype;
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/*
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@ -107,15 +108,24 @@ vfs_namemap_t *vfs_findname __P((vfs_namemap_t *, char *, int));
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int procfs_freevp __P((struct vnode *));
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int procfs_allocvp __P((struct mount *, struct vnode **, long, pfstype));
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struct vnode *procfs_findtextvp __P((struct proc *));
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int procfs_donote __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio));
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int procfs_doregs __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio));
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int procfs_dofpregs __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio));
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int procfs_domem __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio));
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int procfs_doctl __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio));
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int procfs_dostatus __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio));
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int procfs_domap __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio));
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int procfs_donote __P((struct proc *, struct proc *, struct pfsnode *,
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struct uio *));
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int procfs_doregs __P((struct proc *, struct proc *, struct pfsnode *,
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struct uio *));
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int procfs_dofpregs __P((struct proc *, struct proc *, struct pfsnode *,
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struct uio *));
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int procfs_domem __P((struct proc *, struct proc *, struct pfsnode *,
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struct uio *));
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int procfs_doctl __P((struct proc *, struct proc *, struct pfsnode *,
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struct uio *));
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int procfs_dostatus __P((struct proc *, struct proc *, struct pfsnode *,
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struct uio *));
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int procfs_domap __P((struct proc *, struct proc *, struct pfsnode *,
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struct uio *));
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int procfs_docmdline __P((struct proc *, struct proc *, struct pfsnode *,
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struct uio *));
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int procfs_checkioperm __P((struct proc *p, struct proc *t));
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int procfs_checkioperm __P((struct proc *, struct proc *));
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/* functions to check whether or not files should be displayed */
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int procfs_validfile __P((struct proc *));
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86
sys/miscfs/procfs/procfs_cmdline.c
Normal file
86
sys/miscfs/procfs/procfs_cmdline.c
Normal file
@ -0,0 +1,86 @@
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/* $NetBSD: procfs_cmdline.c,v 1.1 1999/03/12 18:45:40 christos Exp $ */
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/*
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* Copyright (c) 1999 Jaromir Dolecek <dolecek@ics.muni.cz>
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* Copyright (c) 1999 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jaromir Dolecek.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/systm.h>
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#include <sys/syslimits.h>
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#include <sys/proc.h>
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#include <sys/vnode.h>
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#include <sys/exec.h>
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#include <miscfs/procfs/procfs.h>
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/*
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* code for returning process's command line arguments
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*/
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int
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procfs_docmdline(curp, p, pfs, uio)
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struct proc *curp;
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struct proc *p;
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struct pfsnode *pfs;
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struct uio *uio;
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{
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struct ps_strings pss;
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char arg[ARG_MAX], *argv;
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int xlen, len, count, i;
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/* don't write; can't work for zombies -- they don't have any stack */
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if (uio->uio_rw != UIO_READ || p->p_stat == SZOMB)
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return EOPNOTSUPP;
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if (copyin(PS_STRINGS, &pss, sizeof(struct ps_strings)))
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return EFAULT;
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if (copyin(pss.ps_argvstr, &argv, sizeof(argv)))
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return EFAULT;
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len = 0;
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count = pss.ps_nargvstr;
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/* don't know how long the argument string is, so let's find out */
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while(count && len < ARG_MAX && copyin(argv+len, &arg[len], 1) == 0) {
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if (len > 0 && arg[len] == '\0') count--;
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len++;
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}
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if (len > 0) len--; /* exclude last NULL */
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xlen = len - uio->uio_offset;
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xlen = imin(xlen, uio->uio_resid);
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if (xlen <= 0)
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return 0;
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else
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return (uiomove(arg + uio->uio_offset, xlen, uio));
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}
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@ -1,4 +1,4 @@
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/* $NetBSD: procfs_subr.c,v 1.25 1999/01/25 02:20:08 msaitoh Exp $ */
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/* $NetBSD: procfs_subr.c,v 1.26 1999/03/12 18:45:40 christos Exp $ */
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/*
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* Copyright (c) 1994 Christopher G. Demetriou. All rights reserved.
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@ -166,6 +166,7 @@ loop:
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case Pmap: /* /proc/N/map = -r--r--r-- */
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case Pstatus: /* /proc/N/status = -r--r--r-- */
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case Pcmdline: /* /proc/N/cmdline = -r--r--r-- */
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pfs->pfs_mode = S_IRUSR|S_IRGRP|S_IROTH;
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vp->v_type = VREG;
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break;
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@ -264,6 +265,9 @@ procfs_rw(v)
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case Pmem:
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return (procfs_domem(curp, p, pfs, uio));
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case Pcmdline:
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return (procfs_docmdline(curp, p, pfs, uio));
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default:
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return (EOPNOTSUPP);
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}
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@ -1,4 +1,4 @@
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/* $NetBSD: procfs_vnops.c,v 1.60 1999/01/25 02:20:08 msaitoh Exp $ */
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/* $NetBSD: procfs_vnops.c,v 1.61 1999/03/12 18:45:40 christos Exp $ */
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/*
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* Copyright (c) 1993 Jan-Simon Pendry
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@ -94,6 +94,7 @@ struct proc_target {
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{ DT_REG, N("note"), Pnote, NULL },
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{ DT_REG, N("notepg"), Pnotepg, NULL },
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{ DT_REG, N("map"), Pmap, procfs_validmap },
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{ DT_REG, N("cmdline"), Pcmdline, NULL },
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#undef N
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};
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static int nproc_targets = sizeof(proc_targets) / sizeof(proc_targets[0]);
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@ -532,6 +533,7 @@ procfs_getattr(v)
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case Pnote:
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case Pnotepg:
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case Pmap:
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case Pcmdline:
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vap->va_nlink = 1;
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vap->va_uid = procp->p_ucred->cr_uid;
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vap->va_gid = procp->p_ucred->cr_gid;
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@ -607,6 +609,7 @@ procfs_getattr(v)
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case Pnote:
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case Pnotepg:
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case Pmap:
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case Pcmdline:
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vap->va_bytes = vap->va_size = 0;
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break;
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