Date: Tue, 07 Oct 1997 21:51:42 -0500 From: Larry Rossow <felgor@megsinet.net> To: freebsd-questions@freebsd.org Subject: Kernel make error Message-ID: <343AF53E.1601155B@megsinet.net>
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Hello,
I am currently experiencing kernel "make" errors when [re]compiling
the FreeBSD 2.2.1 kernel. Attached to this message is my kernel
configuration file (MYKERNEL); please note that when I compile with this
configuration file on a machine with (virtually) the same hardware
(similar enough such that I don't have to change the configuration file)
I do not receive any errors. Also, I have attempted to compile this
kernel several times, each yielding a different result. Here is the
last:
while compiling ../../miscfs/procfs/procfs_vnops.c
In file included from ../../miscfs/procfs/procfs_vnops.c:47
../../sys/systm.h:156: `void' in parameter list must be the entire list
** Error code 1
Attached you will find all of the files in question. Thank you for your
consideration and assistance.
Larry Rossow
felgor@megsinet.net
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/*-
* Copyright (c) 1982, 1988, 1991, 1993
* The Regents of the University of California. All rights reserved.
* (c) UNIX System Laboratories, Inc.
* All or some portions of this file are derived from material licensed
* to the University of California by American Telephone and Telegraph
* Co. or Unix System Laboratories, Inc. and are reproduced herein with
* the permission of UNIX System Laboratories, Inc.
*
* 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.
*
* @(#)systm.h 8.7 (Berkeley) 3/29/95
* $Id: systm.h,v 1.47.2.1 1997/02/04 21:04:13 jhay Exp $
*/
#ifndef _SYS_SYSTM_H_
#define _SYS_SYSTM_H_
#include <machine/cpufunc.h>
extern int securelevel; /* system security level (see init(8)) */
extern int cold; /* nonzero if we are doing a cold boot */
extern const char *panicstr; /* panic message */
extern char version[]; /* system version */
extern char copyright[]; /* system copyright */
extern int nblkdev; /* number of entries in bdevsw */
extern int nchrdev; /* number of entries in cdevsw */
extern struct swdevt *swdevt; /* swap-device information */
extern int nswdev; /* number of swap devices */
extern int nswap; /* size of swap space */
extern int selwait; /* select timeout address */
extern u_char curpriority; /* priority of current process */
extern int physmem; /* physical memory */
extern dev_t dumpdev; /* dump device */
extern long dumplo; /* offset into dumpdev */
extern dev_t rootdev; /* root device */
extern struct vnode *rootvp; /* vnode equivalent to above */
extern dev_t swapdev; /* swapping device */
extern struct vnode *swapdev_vp;/* vnode equivalent to above */
extern int boothowto; /* reboot flags, from console subsystem */
extern int bootverbose; /* nonzero to print verbose messages */
/*
* General function declarations.
*/
void Debugger __P((const char *msg));
int nullop __P((void));
int eopnotsupp __P((void));
int einval __P((void));
int seltrue __P((dev_t dev, int which, struct proc *p));
int ureadc __P((int, struct uio *));
void *hashinit __P((int count, int type, u_long *hashmask));
void *phashinit __P((int count, int type, u_long *nentries));
void panic __P((const char *, ...)) __dead2;
void boot __P((int)) __dead2;
void cpu_boot __P((int));
void tablefull __P((const char *));
int addlog __P((const char *, ...));
int kvprintf __P((char const *, void (*)(int, void*), void *, int,
_BSD_VA_LIST_));
void log __P((int, const char *, ...));
int printf __P((const char *, ...));
int sprintf __P((char *buf, const char *, ...));
void uprintf __P((const char *, ...));
void vprintf __P((const char *, _BSD_VA_LIST_));
void ttyprintf __P((struct tty *, const char *, ...));
void bcopy __P((const void *from, void *to, size_t len));
void ovbcopy __P((const void *from, void *to, size_t len));
extern void (*bzero) __P((void *buf, size_t len));
void *memcpy __P((void *to, const void *from, size_t len));
int copystr __P((const void *kfaddr, void *kdaddr, size_t len,
size_t *lencopied));
int copyinstr __P((const void *udaddr, void *kaddr, size_t len,
size_t *lencopied));
int copyin __P((const void *udaddr, void *kaddr, size_t len));
int copyout __P((const void *kaddr, void *udaddr, size_t len));
int fubyte __P((const void *base));
int fuibyte __P((const void *base));
int subyte __P((void *base, int byte));
int suibyte __P((void *base, int byte));
int fuword __P((const void *base));
int suword __P((void *base, int word));
int susword __P((void *base, int word));
int hzto __P((struct timeval *tv));
void realitexpire __P((void *));
struct clockframe;
void hardclock __P((struct clockframe *frame));
void softclock __P((void));
void statclock __P((struct clockframe *frame));
void startprofclock __P((struct proc *));
void stopprofclock __P((struct proc *));
void setstatclockrate __P((int hzrate));
void hardupdate __P((long));
void hardpps __P((struct timeval *tvp, long usec));
#include <sys/libkern.h>
/* Initialize the world */
extern void consinit(void);
extern void usrinfoinit(void);
extern void cpu_initclocks(void);
extern void vntblinit(void);
extern void nchinit(void);
/* Finalize the world. */
void shutdown_nice __P((void));
/*
* Kernel to clock driver interface.
*/
void inittodr __P((time_t base));
void resettodr __P((void));
void startrtclock __P((void));
/* Timeouts */
typedef void (timeout_t)(void *); /* actual timeout function type */
typedef timeout_t *timeout_func_t; /* a pointer to this type */
void timeout(timeout_func_t, void *, int);
void untimeout(timeout_func_t, void *);
void logwakeup __P((void));
/* Various other callout lists that modules might want to know about */
/* shutdown callout list definitions */
typedef void (*bootlist_fn)(int,void *);
int at_shutdown(bootlist_fn function, void *arg, int);
int rm_at_shutdown(bootlist_fn function, void *arg);
#define SHUTDOWN_PRE_SYNC 0
#define SHUTDOWN_POST_SYNC 1
/* forking */ /* XXX not yet */
typedef void (*forklist_fn)(struct proc *parent,struct proc *child,int flags);
int at_fork(forklist_fn function);
int rm_at_fork(forklist_fn function);
/* exiting */
typedef void (*exitlist_fn)(struct proc *procp);
int at_exit(exitlist_fn function);
int rm_at_exit(exitlist_fn function);
/*
* Common `proc' functions are declared here so that proc.h can be included
* less often.
*/
int tsleep __P((void *chan, int pri, char *wmesg, int timo));
void wakeup __P((void *chan));
#endif /* !_SYS_SYSTM_H_ */
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/*
* 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 8.6 (Berkeley) 2/7/94
*
* $Id: procfs_vnops.c,v 1.24 1996/09/03 14:23:10 bde Exp $
*/
/*
* procfs vnode interface
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/time.h>
#include <sys/kernel.h>
#include <sys/fcntl.h>
#include <sys/proc.h>
#include <sys/unistd.h>
#include <sys/vnode.h>
#include <sys/namei.h>
#include <sys/malloc.h>
#include <sys/dirent.h>
#include <sys/resourcevar.h>
#include <miscfs/procfs/procfs.h>
#include <vm/vm.h> /* for PAGE_SIZE */
static int procfs_abortop __P((struct vop_abortop_args *));
static int procfs_access __P((struct vop_access_args *));
static int procfs_badop __P((void));
static int procfs_close __P((struct vop_close_args *));
static int procfs_getattr __P((struct vop_getattr_args *));
static int procfs_inactive __P((struct vop_inactive_args *));
static int procfs_ioctl __P((struct vop_ioctl_args *));
static int procfs_lookup __P((struct vop_lookup_args *));
static int procfs_open __P((struct vop_open_args *));
static int procfs_pathconf __P((struct vop_pathconf_args *ap));
static int procfs_print __P((struct vop_print_args *));
static int procfs_readdir __P((struct vop_readdir_args *));
static int procfs_reclaim __P((struct vop_reclaim_args *));
static int procfs_setattr __P((struct vop_setattr_args *));
/*
* This is a list of the valid names in the
* process-specific sub-directories. It is
* used in procfs_lookup and procfs_readdir
*/
static struct pfsnames {
u_short d_namlen;
char d_name[PROCFS_NAMELEN];
pfstype d_pfstype;
int (*d_valid) __P((struct proc *));
} procent[] = {
#define N(s) sizeof(s)-1, s
/* namlen, nam, type validp */
{ N("."), Pproc, NULL },
{ N(".."), Proot, NULL },
{ N("file"), Pfile, procfs_validfile },
{ N("mem"), Pmem, NULL },
{ N("regs"), Pregs, procfs_validregs },
{ N("fpregs"), Pfpregs, procfs_validfpregs },
{ N("ctl"), Pctl, NULL },
{ N("status"), Pstatus, NULL },
{ N("note"), Pnote, NULL },
{ N("notepg"), Pnotepg, NULL },
{ N("map"), Pmap, procfs_validmap },
{ N("etype"), Ptype, procfs_validtype },
#undef N
};
#define Nprocent (sizeof(procent)/sizeof(procent[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.
*/
static int
procfs_open(ap)
struct vop_open_args *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).
*/
static int
procfs_close(ap)
struct vop_close_args *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;
default:
break;
}
return (0);
}
/*
* do an ioctl operation on pfsnode (vp).
* (vp) is not locked on entry or exit.
*/
static int
procfs_ioctl(ap)
struct vop_ioctl_args *ap;
{
return (ENOTTY);
}
/*
* _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.
*/
static int
procfs_inactive(ap)
struct vop_inactive_args *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.
*/
static int
procfs_reclaim(ap)
struct vop_reclaim_args *ap;
{
int error;
error = procfs_freevp(ap->a_vp);
return (error);
}
/*
* Return POSIX pathconf information applicable to special devices.
*/
static int
procfs_pathconf(ap)
struct vop_pathconf_args /* {
struct vnode *a_vp;
int a_name;
int *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).
*/
static int
procfs_print(ap)
struct vop_print_args *ap;
{
struct pfsnode *pfs = VTOPFS(ap->a_vp);
printf("tag VT_PROCFS, pid %lu, mode %x, flags %lx\n",
pfs->pfs_pid,
pfs->pfs_mode, pfs->pfs_flags);
return (0);
}
/*
* _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.
*/
static int
procfs_abortop(ap)
struct vop_abortop_args *ap;
{
if ((ap->a_cnp->cn_flags & (HASBUF | SAVESTART)) == HASBUF)
FREE(ap->a_cnp->cn_pnbuf, M_NAMEI);
return (0);
}
/*
* generic entry point for unsupported operations
*/
static int
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.
*/
static int
procfs_getattr(ap)
struct vop_getattr_args *ap;
{
struct pfsnode *pfs = VTOPFS(ap->a_vp);
struct vattr *vap = ap->a_vap;
struct proc *procp;
int error;
/*
* First make sure that the process and its credentials
* still exist.
*/
switch (pfs->pfs_type) {
case Proot:
procp = 0;
break;
default:
procp = PFIND(pfs->pfs_pid);
if (procp == 0 || procp->p_cred == NULL ||
procp->p_ucred == NULL)
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;
/*
* 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 Pctl:
case Pregs:
case Pfpregs:
if (procp->p_flag & P_SUGID)
vap->va_mode &= ~((VREAD|VWRITE)|
((VREAD|VWRITE)>>3)|
((VREAD|VWRITE)>>6));
break;
case Pmem:
/* Retain group kmem readablity. */
if (procp->p_flag & P_SUGID)
vap->va_mode &= ~(VREAD|VWRITE);
break;
default:
break;
}
/*
* 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.
*/
{
struct timeval tv;
microtime(&tv);
TIMEVAL_TO_TIMESPEC(&tv, &vap->va_ctime);
}
vap->va_atime = vap->va_mtime = vap->va_ctime;
/*
* 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:
vap->va_nlink = nprocs + 3;
vap->va_uid = 0;
vap->va_gid = 0;
vap->va_bytes = vap->va_size = DEV_BSIZE;
break;
case Pproc:
vap->va_nlink = Nprocent;
vap->va_uid = procp->p_ucred->cr_uid;
vap->va_gid = procp->p_ucred->cr_gid;
vap->va_bytes = vap->va_size = DEV_BSIZE;
break;
case Pfile:
error = EOPNOTSUPP;
break;
case Pmem:
vap->va_nlink = 1;
/*
* If we denied owner access earlier, then we have to
* change the owner to root - otherwise 'ps' and friends
* will break even though they are setgid kmem. *SIGH*
*/
if (procp->p_flag & P_SUGID)
vap->va_uid = 0;
else
vap->va_uid = procp->p_ucred->cr_uid;
vap->va_gid = KMEM_GROUP;
break;
case Ptype:
case Pmap:
case Pregs:
case Pfpregs:
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;
default:
panic("procfs_getattr");
}
return (error);
}
static int
procfs_setattr(ap)
struct vop_setattr_args *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.
*
* something very similar to this code is duplicated
* throughout the 4bsd kernel and should be moved
* into kern/vfs_subr.c sometime.
*
* 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.
*/
static int
procfs_access(ap)
struct vop_access_args *ap;
{
struct vattr *vap;
struct vattr vattr;
int error;
/*
* If you're the super-user,
* you always get access.
*/
if (ap->a_cred->cr_uid == (uid_t) 0)
return (0);
vap = &vattr;
error = VOP_GETATTR(ap->a_vp, vap, ap->a_cred, ap->a_p);
if (error)
return (error);
/*
* Access check is based on only one of owner, group, public.
* If not owner, then check group. If not a member of the
* group, then check public access.
*/
if (ap->a_cred->cr_uid != vap->va_uid) {
gid_t *gp;
int i;
(ap->a_mode) >>= 3;
gp = ap->a_cred->cr_groups;
for (i = 0; i < ap->a_cred->cr_ngroups; i++, gp++)
if (vap->va_gid == *gp)
goto found;
ap->a_mode >>= 3;
found:
;
}
if ((vap->va_mode & ap->a_mode) == ap->a_mode)
return (0);
return (EACCES);
}
/*
* 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().
*/
static int
procfs_lookup(ap)
struct vop_lookup_args *ap;
{
struct componentname *cnp = ap->a_cnp;
struct vnode **vpp = ap->a_vpp;
struct vnode *dvp = ap->a_dvp;
char *pname = cnp->cn_nameptr;
int error = 0;
pid_t pid;
struct vnode *nvp;
struct pfsnode *pfs;
struct proc *procp;
pfstype pfs_type;
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))
pid = cnp->cn_proc->p_pid;
else
pid = atopid(pname, cnp->cn_namelen);
if (pid == NO_PID)
return (ENOENT);
procp = PFIND(pid);
if (procp == 0)
return (ENOENT);
error = procfs_allocvp(dvp->v_mount, &nvp, pid, Pproc);
if (error)
return (error);
nvp->v_type = VDIR;
pfs = VTOPFS(nvp);
*vpp = nvp;
return (0);
case Pproc:
if (cnp->cn_flags & ISDOTDOT) {
error = procfs_root(dvp->v_mount, vpp);
return (error);
}
procp = PFIND(pfs->pfs_pid);
if (procp == 0)
return (ENOENT);
for (i = 0; i < Nprocent; i++) {
struct pfsnames *dp = &procent[i];
if (cnp->cn_namelen == dp->d_namlen &&
bcmp(pname, dp->d_name, dp->d_namlen) == 0 &&
(dp->d_valid == NULL || (*dp->d_valid)(procp))) {
pfs_type = dp->d_pfstype;
goto found;
}
}
return (ENOENT);
found:
if (pfs_type == Pfile) {
nvp = procfs_findtextvp(procp);
if (nvp) {
VREF(nvp);
VOP_LOCK(nvp);
} else {
error = ENXIO;
}
} else {
error = procfs_allocvp(dvp->v_mount, &nvp,
pfs->pfs_pid, pfs_type);
if (error)
return (error);
nvp->v_type = VREG;
pfs = VTOPFS(nvp);
}
*vpp = nvp;
return (error);
default:
return (ENOTDIR);
}
}
/*
* Does this process have a text file?
*/
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()
*/
static int
procfs_readdir(ap)
struct vop_readdir_args *ap;
{
struct uio *uio = ap->a_uio;
struct pfsdent d;
struct pfsdent *dp = &d;
struct pfsnode *pfs;
int error;
int count;
int i;
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;
p = PFIND(pfs->pfs_pid);
if (p == NULL)
break;
while (uio->uio_resid >= UIO_MX) {
struct pfsnames *dt;
if (i >= Nprocent)
break;
dt = &procent[i];
/* see if we should show this one. */
if (dt->d_valid && (*dt->d_valid)(p) == 0) {
i++;
continue;
}
dp->d_reclen = UIO_MX;
dp->d_fileno = PROCFS_FILENO(pfs->pfs_pid, dt->d_pfstype);
dp->d_type = DT_REG;
dp->d_namlen = dt->d_namlen;
bcopy(dt->d_name, dp->d_name, sizeof(dt->d_name)-1);
error = uiomove((caddr_t) dp, UIO_MX, uio);
if (error)
break;
count += UIO_MX;
i++;
}
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: {
int pcnt;
#ifdef PROCFS_ZOMBIE
int doingzomb = 0;
#endif
volatile struct proc *p = allproc.lh_first;
#define PROCFS_XFILES 3 /* number of other entries, like "curproc" */
pcnt = PROCFS_XFILES;
while (p && uio->uio_resid >= UIO_MX) {
bzero((char *) dp, UIO_MX);
dp->d_type = DT_DIR;
dp->d_reclen = UIO_MX;
switch (i) {
case 0:
dp->d_fileno = PROCFS_FILENO(0, Proot);
dp->d_namlen = sprintf(dp->d_name, ".");
break;
case 1:
dp->d_fileno = PROCFS_FILENO(0, Proot);
dp->d_namlen = sprintf(dp->d_name, "..");
break;
case 2:
/* ship out entry for "curproc" */
dp->d_fileno = PROCFS_FILENO(PID_MAX+1, Pproc);
dp->d_namlen = sprintf(dp->d_name, "curproc");
break;
default:
if (pcnt >= i) {
dp->d_fileno = PROCFS_FILENO(p->p_pid, Pproc);
dp->d_namlen = sprintf(dp->d_name, "%ld", (long) p->p_pid);
}
p = p->p_list.le_next;
#ifdef PROCFS_ZOMBIE
if (p == 0 && doingzomb == 0) {
doingzomb = 1;
p = zombproc.lh_first;
}
#endif
if (pcnt++ < i)
continue;
break;
}
error = uiomove((caddr_t) dp, UIO_MX, uio);
if (error)
break;
count += UIO_MX;
i++;
}
break;
}
default:
error = ENOTDIR;
break;
}
uio->uio_offset = i * UIO_MX;
return (error);
}
/*
* 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);
}
#define procfs_create ((int (*) __P((struct vop_create_args *))) procfs_badop)
#define procfs_mknod ((int (*) __P((struct vop_mknod_args *))) procfs_badop)
#define procfs_read procfs_rw
#define procfs_write procfs_rw
#define procfs_select ((int (*) __P((struct vop_select_args *))) procfs_badop)
#define procfs_mmap ((int (*) __P((struct vop_mmap_args *))) procfs_badop)
#define procfs_fsync ((int (*) __P((struct vop_fsync_args *))) procfs_badop)
#define procfs_seek ((int (*) __P((struct vop_seek_args *))) procfs_badop)
#define procfs_remove ((int (*) __P((struct vop_remove_args *))) procfs_badop)
#define procfs_link ((int (*) __P((struct vop_link_args *))) procfs_badop)
#define procfs_rename ((int (*) __P((struct vop_rename_args *))) procfs_badop)
#define procfs_mkdir ((int (*) __P((struct vop_mkdir_args *))) procfs_badop)
#define procfs_rmdir ((int (*) __P((struct vop_rmdir_args *))) procfs_badop)
#define procfs_symlink ((int (*) __P((struct vop_symlink_args *))) procfs_badop)
#define procfs_readlink ((int (*) __P((struct vop_readlink_args *))) procfs_badop)
#define procfs_lock ((int (*) __P((struct vop_lock_args *))) nullop)
#define procfs_unlock ((int (*) __P((struct vop_unlock_args *))) nullop)
#define procfs_bmap ((int (*) __P((struct vop_bmap_args *))) procfs_badop)
#define procfs_strategy ((int (*) __P((struct vop_strategy_args *))) procfs_badop)
#define procfs_islocked ((int (*) __P((struct vop_islocked_args *))) nullop)
#define procfs_advlock ((int (*) __P((struct vop_advlock_args *))) procfs_badop)
#define procfs_blkatoff ((int (*) __P((struct vop_blkatoff_args *))) procfs_badop)
#define procfs_valloc ((int (*) __P((struct vop_valloc_args *))) procfs_badop)
#define procfs_vfree ((int (*) __P((struct vop_vfree_args *))) nullop)
#define procfs_truncate ((int (*) __P((struct vop_truncate_args *))) procfs_badop)
#define procfs_update ((int (*) __P((struct vop_update_args *))) nullop)
vop_t **procfs_vnodeop_p;
static struct vnodeopv_entry_desc procfs_vnodeop_entries[] = {
{ &vop_default_desc, (vop_t *)vn_default_error },
{ &vop_lookup_desc, (vop_t *)procfs_lookup }, /* lookup */
{ &vop_create_desc, (vop_t *)procfs_create }, /* create */
{ &vop_mknod_desc, (vop_t *)procfs_mknod }, /* mknod */
{ &vop_open_desc, (vop_t *)procfs_open }, /* open */
{ &vop_close_desc, (vop_t *)procfs_close }, /* close */
{ &vop_access_desc, (vop_t *)procfs_access }, /* access */
{ &vop_getattr_desc, (vop_t *)procfs_getattr }, /* getattr */
{ &vop_setattr_desc, (vop_t *)procfs_setattr }, /* setattr */
{ &vop_read_desc, (vop_t *)procfs_read }, /* read */
{ &vop_write_desc, (vop_t *)procfs_write }, /* write */
{ &vop_ioctl_desc, (vop_t *)procfs_ioctl }, /* ioctl */
{ &vop_select_desc, (vop_t *)procfs_select }, /* select */
{ &vop_mmap_desc, (vop_t *)procfs_mmap }, /* mmap */
{ &vop_fsync_desc, (vop_t *)procfs_fsync }, /* fsync */
{ &vop_seek_desc, (vop_t *)procfs_seek }, /* seek */
{ &vop_remove_desc, (vop_t *)procfs_remove }, /* remove */
{ &vop_link_desc, (vop_t *)procfs_link }, /* link */
{ &vop_rename_desc, (vop_t *)procfs_rename }, /* rename */
{ &vop_mkdir_desc, (vop_t *)procfs_mkdir }, /* mkdir */
{ &vop_rmdir_desc, (vop_t *)procfs_rmdir }, /* rmdir */
{ &vop_symlink_desc, (vop_t *)procfs_symlink }, /* symlink */
{ &vop_readdir_desc, (vop_t *)procfs_readdir }, /* readdir */
{ &vop_readlink_desc, (vop_t *)procfs_readlink }, /* readlink */
{ &vop_abortop_desc, (vop_t *)procfs_abortop }, /* abortop */
{ &vop_inactive_desc, (vop_t *)procfs_inactive }, /* inactive */
{ &vop_reclaim_desc, (vop_t *)procfs_reclaim }, /* reclaim */
{ &vop_lock_desc, (vop_t *)procfs_lock }, /* lock */
{ &vop_unlock_desc, (vop_t *)procfs_unlock }, /* unlock */
{ &vop_bmap_desc, (vop_t *)procfs_bmap }, /* bmap */
{ &vop_strategy_desc, (vop_t *)procfs_strategy }, /* strategy */
{ &vop_print_desc, (vop_t *)procfs_print }, /* print */
{ &vop_islocked_desc, (vop_t *)procfs_islocked }, /* islocked */
{ &vop_pathconf_desc, (vop_t *)procfs_pathconf }, /* pathconf */
{ &vop_advlock_desc, (vop_t *)procfs_advlock }, /* advlock */
{ &vop_blkatoff_desc, (vop_t *)procfs_blkatoff }, /* blkatoff */
{ &vop_valloc_desc, (vop_t *)procfs_valloc }, /* valloc */
{ &vop_vfree_desc, (vop_t *)procfs_vfree }, /* vfree */
{ &vop_truncate_desc, (vop_t *)procfs_truncate }, /* truncate */
{ &vop_update_desc, (vop_t *)procfs_update }, /* update */
{ NULL, NULL }
};
static struct vnodeopv_desc procfs_vnodeop_opv_desc =
{ &procfs_vnodeop_p, procfs_vnodeop_entries };
VNODEOP_SET(procfs_vnodeop_opv_desc);
--------------F07E86F2208B4817CE64298E
Content-Type: text/plain; charset=us-ascii; name="Mykernel"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline; filename="Mykernel"
# MYKERNEL
# felgor@megsinet.net
machine "i386"
cpu "I586_CPU"
ident MYKERNEL
maxusers 10
options MATH_EMULATE # Enable support for x87 emulation
options INET # Enable support for internetworking
options FFS # Enable Berkeley Fast File System
options "CD9660" # Enable ISO 9660 File system
options PROCFS # Enable Process File System
options MFS # Enable Memory Mapped File System
options "COMPAT_43" # Remain compatible with BSD 4.3
options BOUNCE_BUFFERS # Include supprot for DMA bounce buffers
options UCONSOLE
options FAILSAFE
options USERCONFIG
options VISUAL_USERCONFIG
options SYSVSHM
options SYSVSEM
options SYSVMSG
config kernel root on wd0
controller isa0
controller pci0
controller fdc0 at isa? port "IO_FD1" bio irq 6 drq 2 vector fdintr
disk fd0 at fdc0 drive 0
controller wdc0 at isa? port "IO_WD1" bio irq 14 vector wdintr
disk wd0 at wdc0 drive 0
controller wdc1 at isa? port "IO_WD2" bio irq 15 vector wdintr
# disk wd2 at wdc1 drive 0
options ATAPI
options ATAPI_STATIC
device wcd0 # CD-ROM Drive
controller amd0
device sc0 at isa? port "IO_KBD" tty irq 1 vector scintr
# device vt0 at isa? port "IO_KBD" tty irq 1 vector pcrint
# options PCVT_FREEBSD=210
# options XSERVER
# options FAT_CURSOR
device npx0 at isa? port "IO_NPX" irq 13 vector npxintr
device sio0 at isa? port "IO_COM1" tty irq 4 vector siointr
device sio1 at isa? port "IO_COM2" tty irq 3 vector siointr
device lpt0 at isa? port? tty irq 7 vector lptintr
# device de0
# device fxp0
# device vx0
# Network card configuration:
device ed0 at isa? port 0x280 net irq 10 iomem 0xd8000 vector edintr
# device ed1 at isa? port 0x300 net irq 5 iomem 0xd8000 vector edintr
# device ie0 at isa? port 0x360 net irq 7 iomem 0xd0000 vector ieintr
# device ep0 at isa? port 0x300 net irq 10 vector epintr
# device ex0 at isa? port 0x300 net irq 10 iomem 0xd0000 vector exintr
# device fe0 at isa? port 0x300 net irq ? vector feintr
# device ix0 at isa? port 0x300 net irq 10 iomem 0xd0000 iosiz 32768 vector ixintr
# device le0 at isa? port 0x300 net irq 5 iomem 0xd0000 vector le_intr
# device lnc0 at isa? port 0x280 net irq 10 drq 0 vector lncintr
# device ze0 at isa? port 0x300 net irq 5 iomem 0xd8000 vector zeintr
# device zp0 at isa? port 0x300 net irq 10 iomem 0xd8000 vector zpintr
# Sound configuration:
controller snd0
device sb0 at isa? port 0x220 irq 5 drq 1 vector sbintr
options "SBC_IRQ=5"
pseudo-device loop
pseudo-device ether
pseudo-device log
pseudo-device tun 1
pseudo-device pty 16
pseudo-device gzip
# options KTRACE
--------------F07E86F2208B4817CE64298E--
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