*
* @APPLE_LICENSE_HEADER_START@
*
- * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
+ * 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 file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- *
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
+ * 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@
*/
int sl_locked;
} memlock;
-/*
- * XXX this does not belong here
- */
-static funnel_t *
-spl_kernel_funnel(void)
-{
- funnel_t *cfunnel;
-
- cfunnel = thread_funnel_get();
- if (cfunnel != kernel_flock) {
- if (cfunnel != NULL)
- thread_funnel_set(cfunnel, FALSE);
- thread_funnel_set(kernel_flock, TRUE);
- }
- return(cfunnel);
-}
-
-static void
-splx_kernel_funnel(funnel_t *saved)
-{
- if (saved != kernel_flock) {
- thread_funnel_set(kernel_flock, FALSE);
- if (saved != NULL)
- thread_funnel_set(saved, TRUE);
- }
-}
-
static int sysctl_root SYSCTL_HANDLER_ARGS;
struct sysctl_oid_list sysctl__children; /* root list */
struct sysctl_oid *p;
struct sysctl_oid *q;
int n;
- funnel_t *fnl;
-
- fnl = spl_kernel_funnel();
/*
* If this oid has a number OID_AUTO, give it a number which
SLIST_INSERT_AFTER(q, oidp, oid_link);
else
SLIST_INSERT_HEAD(parent, oidp, oid_link);
-
- splx_kernel_funnel(fnl);
}
void sysctl_unregister_oid(struct sysctl_oid *oidp)
{
- funnel_t *fnl;
-
- fnl = spl_kernel_funnel();
SLIST_REMOVE(oidp->oid_parent, oidp, sysctl_oid, oid_link);
- splx_kernel_funnel(fnl);
}
/*
return (error);
}
-/*
- * Handle a quad, signed or unsigned. arg1 points to it.
- */
-
-int
-sysctl_handle_quad SYSCTL_HANDLER_ARGS
-{
- int error = 0;
-
- if (!arg1)
- return (EINVAL);
- error = SYSCTL_OUT(req, arg1, sizeof(long long));
-
- if (error || !req->newptr)
- return (error);
-
- error = SYSCTL_IN(req, arg1, sizeof(long long));
- return (error);
-}
-
-/*
- * Expose an int value as a quad.
- *
- * This interface allows us to support interfaces defined
- * as using quad values while the implementation is still
- * using ints.
- */
-int
-sysctl_handle_int2quad SYSCTL_HANDLER_ARGS
-{
- int error = 0;
- long long val;
- int newval;
-
- if (!arg1)
- return (EINVAL);
- val = (long long)*(int *)arg1;
- error = SYSCTL_OUT(req, &val, sizeof(long long));
-
- if (error || !req->newptr)
- return (error);
-
- error = SYSCTL_IN(req, &val, sizeof(long long));
- if (!error) {
- /*
- * Value must be representable; check by
- * casting and then casting back.
- */
- newval = (int)val;
- if ((long long)newval != val) {
- error = ERANGE;
- } else {
- *(int *)arg1 = newval;
- }
- }
- return (error);
-}
-
/*
* Handle our generic '\0' terminated 'C' string.
* Two cases:
/*
* Transfer functions to/from kernel space.
+ * XXX: rather untested at this point
*/
static int
sysctl_old_kernel(struct sysctl_req *req, const void *p, size_t l)
i = l;
if (i > req->oldlen - req->oldidx)
i = req->oldlen - req->oldidx;
- if (i > 0)
- bcopy((void*)p, (char *)req->oldptr + req->oldidx, i);
+ if (i > 0) {
+ error = copyout((void*)p, (char *)req->oldptr + req->oldidx, i);
+ if (error)
+ return error;
+ }
}
req->oldidx += l;
if (req->oldptr && i != l)
return 0;
if (req->newlen - req->newidx < l)
return (EINVAL);
- bcopy((char *)req->newptr + req->newidx, p, l);
+ copyin((char *)req->newptr + req->newidx, p, l);
req->newidx += l;
return (0);
}
int
-kernel_sysctl(struct proc *p, int *name, u_int namelen, void *old, size_t *oldlenp, void *new, size_t newlen)
+kernel_sysctl(struct proc *p, int *name, u_int namelen, void *old, size_t *oldlenp, void *new, size_t newlen, size_t *retval)
{
int error = 0;
struct sysctl_req req;
- funnel_t *fnl;
- /*
- * Construct request.
- */
bzero(&req, sizeof req);
+
req.p = p;
- if (oldlenp)
+
+ if (oldlenp) {
req.oldlen = *oldlenp;
- if (old)
+ }
+
+ if (old) {
req.oldptr= old;
+ }
+
if (newlen) {
req.newlen = newlen;
req.newptr = new;
}
+
req.oldfunc = sysctl_old_kernel;
req.newfunc = sysctl_new_kernel;
req.lock = 1;
- /*
- * Locking. Tree traversal always begins with the kernel funnel held.
- */
- fnl = spl_kernel_funnel();
-
/* XXX this should probably be done in a general way */
while (memlock.sl_lock) {
memlock.sl_want = 1;
}
memlock.sl_lock = 1;
- /* make the request */
error = sysctl_root(0, name, namelen, &req);
- /* unlock memory if required */
if (req.lock == 2)
vsunlock(req.oldptr, req.oldlen, B_WRITE);
wakeup((caddr_t)&memlock);
}
- /*
- * Undo locking.
- */
- splx_kernel_funnel(fnl);
-
if (error && error != ENOMEM)
return (error);
- if (oldlenp)
- *oldlenp = req.oldidx;
-
+ if (retval) {
+ if (req.oldptr && req.oldidx > req.oldlen)
+ *retval = req.oldlen;
+ else
+ *retval = req.oldidx;
+ }
return (error);
}
return (EPERM);
}
- /*
- * If we're inside the kernel, the OID must be marked as kernel-valid.
- * XXX This mechanism for testing is bad.
- */
- if ((req->oldfunc == sysctl_old_kernel) && !(oid->oid_kind & CTLFLAG_KERN))
- return(EPERM);
-
/* Most likely only root can write */
if (!(oid->oid_kind & CTLFLAG_ANYBODY) &&
req->newptr && req->p &&
}
return (error);
}
+#if 0
+
+#if COMPAT_43
+#include <sys/socket.h>
+#include <vm/vm_param.h>
+
+#define KINFO_PROC (0<<8)
+#define KINFO_RT (1<<8)
+#define KINFO_VNODE (2<<8)
+#define KINFO_FILE (3<<8)
+#define KINFO_METER (4<<8)
+#define KINFO_LOADAVG (5<<8)
+#define KINFO_CLOCKRATE (6<<8)
+
+/* Non-standard BSDI extension - only present on their 4.3 net-2 releases */
+#define KINFO_BSDI_SYSINFO (101<<8)
/*
- * Kernel versions of the userland sysctl helper functions.
- *
- * These allow sysctl to be used in the same fashion in both
- * userland and the kernel.
- *
- * Note that some sysctl handlers use copyin/copyout, which
- * may not work correctly.
+ * XXX this is bloat, but I hope it's better here than on the potentially
+ * limited kernel stack... -Peter
*/
-static int
-sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, void *newp, size_t newlen)
-{
+static struct {
+ int bsdi_machine; /* "i386" on BSD/386 */
+/* ^^^ this is an offset to the string, relative to the struct start */
+ char *pad0;
+ long pad1;
+ long pad2;
+ long pad3;
+ u_long pad4;
+ u_long pad5;
+ u_long pad6;
+
+ int bsdi_ostype; /* "BSD/386" on BSD/386 */
+ int bsdi_osrelease; /* "1.1" on BSD/386 */
+ long pad7;
+ long pad8;
+ char *pad9;
+
+ long pad10;
+ long pad11;
+ int pad12;
+ long pad13;
+ quad_t pad14;
+ long pad15;
+
+ struct timeval pad16;
+ /* we dont set this, because BSDI's uname used gethostname() instead */
+ int bsdi_hostname; /* hostname on BSD/386 */
+
+ /* the actual string data is appended here */
+
+} bsdi_si;
+/*
+ * this data is appended to the end of the bsdi_si structure during copyout.
+ * The "char *" offsets are relative to the base of the bsdi_si struct.
+ * This contains "FreeBSD\02.0-BUILT-nnnnnn\0i386\0", and these strings
+ * should not exceed the length of the buffer here... (or else!! :-)
+ */
+static char bsdi_strings[80]; /* It had better be less than this! */
- return(kernel_sysctl(current_proc(), name, namelen, oldp, oldlenp, newp, newlen));
-}
+#ifndef _SYS_SYSPROTO_H_
+struct getkerninfo_args {
+ int op;
+ char *where;
+ size_t *size;
+ int arg;
+};
+#endif
-static int
-sysctlnametomib(const char *name, int *mibp, size_t *sizep)
+int
+ogetkerninfo(struct proc *p, struct getkerninfo_args *uap)
{
- int oid[2];
- int error;
+ int error, name[6];
+ size_t size;
+
+ switch (uap->op & 0xff00) {
+
+ case KINFO_RT:
+ name[0] = CTL_NET;
+ name[1] = PF_ROUTE;
+ name[2] = 0;
+ name[3] = (uap->op & 0xff0000) >> 16;
+ name[4] = uap->op & 0xff;
+ name[5] = uap->arg;
+ error = userland_sysctl(p, name, 6, uap->where, uap->size,
+ 0, 0, 0, &size);
+ break;
+
+ case KINFO_VNODE:
+ name[0] = CTL_KERN;
+ name[1] = KERN_VNODE;
+ error = userland_sysctl(p, name, 2, uap->where, uap->size,
+ 0, 0, 0, &size);
+ break;
+
+ case KINFO_PROC:
+ name[0] = CTL_KERN;
+ name[1] = KERN_PROC;
+ name[2] = uap->op & 0xff;
+ name[3] = uap->arg;
+ error = userland_sysctl(p, name, 4, uap->where, uap->size,
+ 0, 0, 0, &size);
+ break;
+
+ case KINFO_FILE:
+ name[0] = CTL_KERN;
+ name[1] = KERN_FILE;
+ error = userland_sysctl(p, name, 2, uap->where, uap->size,
+ 0, 0, 0, &size);
+ break;
+
+ case KINFO_METER:
+ name[0] = CTL_VM;
+ name[1] = VM_METER;
+ error = userland_sysctl(p, name, 2, uap->where, uap->size,
+ 0, 0, 0, &size);
+ break;
+
+ case KINFO_LOADAVG:
+ name[0] = CTL_VM;
+ name[1] = VM_LOADAVG;
+ error = userland_sysctl(p, name, 2, uap->where, uap->size,
+ 0, 0, 0, &size);
+ break;
+
+ case KINFO_CLOCKRATE:
+ name[0] = CTL_KERN;
+ name[1] = KERN_CLOCKRATE;
+ error = userland_sysctl(p, name, 2, uap->where, uap->size,
+ 0, 0, 0, &size);
+ break;
+
+ case KINFO_BSDI_SYSINFO: {
+ /*
+ * this is pretty crude, but it's just enough for uname()
+ * from BSDI's 1.x libc to work.
+ *
+ * In particular, it doesn't return the same results when
+ * the supplied buffer is too small. BSDI's version apparently
+ * will return the amount copied, and set the *size to how
+ * much was needed. The emulation framework here isn't capable
+ * of that, so we just set both to the amount copied.
+ * BSDI's 2.x product apparently fails with ENOMEM in this
+ * scenario.
+ */
- /* magic service node */
- oid[0] = 0;
- oid[1] = 3;
+ u_int needed;
+ u_int left;
+ char *s;
- /* look up OID for name */
- *sizep *= sizeof(int);
- error = sysctl(oid, 2, mibp, sizep, (void *)name, strlen(name));
- *sizep /= sizeof(int);
- return(error);
-}
+ bzero((char *)&bsdi_si, sizeof(bsdi_si));
+ bzero(bsdi_strings, sizeof(bsdi_strings));
-int
-sysctlbyname(const char *name, void *oldp, size_t *oldlenp, void *newp, size_t newlen)
-{
- int oid[CTL_MAXNAME + 2];
- int error;
- size_t oidlen;
+ s = bsdi_strings;
- /* look up the OID */
- oidlen = CTL_MAXNAME;
- error = sysctlnametomib(name, oid, &oidlen);
+ bsdi_si.bsdi_ostype = (s - bsdi_strings) + sizeof(bsdi_si);
+ strcpy(s, ostype);
+ s += strlen(s) + 1;
- /* now use the OID */
- if (error == 0)
- error = sysctl(oid, oidlen, oldp, oldlenp, newp, newlen);
- return(error);
+ bsdi_si.bsdi_osrelease = (s - bsdi_strings) + sizeof(bsdi_si);
+ strcpy(s, osrelease);
+ s += strlen(s) + 1;
+
+ bsdi_si.bsdi_machine = (s - bsdi_strings) + sizeof(bsdi_si);
+ strcpy(s, machine);
+ s += strlen(s) + 1;
+
+ needed = sizeof(bsdi_si) + (s - bsdi_strings);
+
+ if (uap->where == NULL) {
+ /* process is asking how much buffer to supply.. */
+ size = needed;
+ error = 0;
+ break;
+ }
+
+
+ /* if too much buffer supplied, trim it down */
+ if (size > needed)
+ size = needed;
+
+ /* how much of the buffer is remaining */
+ left = size;
+
+ if ((error = copyout((char *)&bsdi_si, uap->where, left)) != 0)
+ break;
+
+ /* is there any point in continuing? */
+ if (left > sizeof(bsdi_si)) {
+ left -= sizeof(bsdi_si);
+ error = copyout(&bsdi_strings,
+ uap->where + sizeof(bsdi_si), left);
+ }
+ break;
+ }
+
+ default:
+ return (EOPNOTSUPP);
+ }
+ if (error)
+ return (error);
+ p->p_retval[0] = size;
+ if (uap->size)
+ error = copyout((caddr_t)&size, (caddr_t)uap->size,
+ sizeof(size));
+ return (error);
}
+#endif /* COMPAT_43 */
+#endif
projects / apple / xnu.git / blobdiff