/*- * Copyright (c) 1982, 1986, 1989, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Mike Karels at Berkeley Software Design, 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. * * @(#)kern_sysctl.c 8.4 (Berkeley) 4/14/94 * $Id: kern_sysctl.c,v 1.47 1995/11/14 09:37:22 phk Exp $ */ /* * sysctl system call. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include extern struct linker_set sysctl_; /* BEGIN_MIB */ SYSCTL_NODE(, 0, sysctl, CTLFLAG_RW, 0, "Sysctl internal magic"); SYSCTL_NODE(, CTL_KERN, kern, CTLFLAG_RW, 0, "High kernel, proc, limits &c"); SYSCTL_NODE(, CTL_VM, vm, CTLFLAG_RW, 0, "Virtual memory"); SYSCTL_NODE(, CTL_FS, fs, CTLFLAG_RW, 0, "File system"); SYSCTL_NODE(, CTL_NET, net, CTLFLAG_RW, 0, "Network, (see socket.h)"); SYSCTL_NODE(, CTL_DEBUG, debug, CTLFLAG_RW, 0, "Debugging"); SYSCTL_NODE(, CTL_HW, hw, CTLFLAG_RW, 0, "hardware"); SYSCTL_NODE(, CTL_MACHDEP, machdep, CTLFLAG_RW, 0, "machine dependent"); SYSCTL_NODE(, CTL_USER, user, CTLFLAG_RW, 0, "user-level"); SYSCTL_STRING(_kern, KERN_OSRELEASE, osrelease, CTLFLAG_RD, osrelease, 0, ""); SYSCTL_INT(_kern, KERN_OSREV, osrevision, CTLFLAG_RD, 0, BSD, ""); SYSCTL_STRING(_kern, KERN_VERSION, version, CTLFLAG_RD, version, 0, ""); SYSCTL_STRING(_kern, KERN_OSTYPE, ostype, CTLFLAG_RD, ostype, 0, ""); extern int osreldate; SYSCTL_INT(_kern, KERN_OSRELDATE, osreldate, CTLFLAG_RD, &osreldate, 0, ""); SYSCTL_INT(_kern, KERN_MAXVNODES, maxvnodes, CTLFLAG_RD, &desiredvnodes, 0, ""); SYSCTL_INT(_kern, KERN_MAXPROC, maxproc, CTLFLAG_RD, &maxproc, 0, ""); SYSCTL_INT(_kern, KERN_MAXPROCPERUID, maxprocperuid, CTLFLAG_RD, &maxprocperuid, 0, ""); SYSCTL_INT(_kern, KERN_ARGMAX, argmax, CTLFLAG_RD, 0, ARG_MAX, ""); SYSCTL_INT(_kern, KERN_POSIX1, posix1version, CTLFLAG_RD, 0, _POSIX_VERSION, ""); SYSCTL_INT(_kern, KERN_NGROUPS, ngroups, CTLFLAG_RD, 0, NGROUPS_MAX, ""); SYSCTL_INT(_kern, KERN_JOB_CONTROL, job_control, CTLFLAG_RD, 0, 1, ""); #ifdef _POSIX_SAVED_IDS SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD, 0, 1, ""); #else SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD, 0, 0, ""); #endif char kernelname[MAXPATHLEN] = "/kernel"; /* XXX bloat */ SYSCTL_STRING(_kern, KERN_BOOTFILE, bootfile, CTLFLAG_RW, kernelname, sizeof kernelname, ""); SYSCTL_STRUCT(_kern, KERN_BOOTTIME, boottime, CTLFLAG_RW, &boottime, timeval, ""); SYSCTL_STRING(_hw, HW_MACHINE, machine, CTLFLAG_RD, machine, 0, ""); SYSCTL_STRING(_hw, HW_MODEL, model, CTLFLAG_RD, cpu_model, 0, ""); SYSCTL_INT(_hw, HW_NCPU, ncpu, CTLFLAG_RD, 0, 1, ""); SYSCTL_INT(_hw, HW_BYTEORDER, byteorder, CTLFLAG_RD, 0, BYTE_ORDER, ""); SYSCTL_INT(_hw, HW_PAGESIZE, pagesize, CTLFLAG_RD, 0, PAGE_SIZE, ""); /* END_MIB */ extern int vfs_update_wakeup; extern int vfs_update_interval; static int sysctl_kern_updateinterval SYSCTL_HANDLER_ARGS { int error = sysctl_handle_int(oidp, oidp->oid_arg1, oidp->oid_arg2, req); if (!error) wakeup(&vfs_update_wakeup); return error; } SYSCTL_PROC(_kern, KERN_UPDATEINTERVAL, update, CTLTYPE_INT|CTLFLAG_RW, &vfs_update_interval, 0, sysctl_kern_updateinterval, ""); char hostname[MAXHOSTNAMELEN]; SYSCTL_STRING(_kern, KERN_HOSTNAME, hostname, CTLFLAG_RW, hostname, sizeof(hostname), ""); static int sysctl_order_cmp(const void *a, const void *b) { const struct sysctl_oid **pa, **pb; pa = (const struct sysctl_oid **)a; pb = (const struct sysctl_oid **)b; if (*pa == NULL) return (1); if (*pb == NULL) return (-1); return ((*pa)->oid_number - (*pb)->oid_number); } static void sysctl_order(void *arg) { int j; struct linker_set *l = (struct linker_set *) arg; struct sysctl_oid **oidpp; j = l->ls_length; oidpp = (struct sysctl_oid **) l->ls_items; for (; j--; oidpp++) { if (!*oidpp) continue; if ((*oidpp)->oid_arg1 == arg) { *oidpp = 0; continue; } if (((*oidpp)->oid_kind & CTLTYPE) == CTLTYPE_NODE) if (!(*oidpp)->oid_handler) sysctl_order((*oidpp)->oid_arg1); } qsort(l->ls_items, l->ls_length, sizeof l->ls_items[0], sysctl_order_cmp); } SYSINIT(sysctl, SI_SUB_KMEM, SI_ORDER_ANY, sysctl_order, &sysctl_); static void sysctl_sysctl_debug_dump_node(struct linker_set *l, int i) { int j, k; struct sysctl_oid **oidpp; j = l->ls_length; oidpp = (struct sysctl_oid **) l->ls_items; for (; j--; oidpp++) { if (!*oidpp) continue; for (k=0; koid_number > 100) { printf("Junk! %p # %d %s k %x a1 %p a2 %x h %p\n", *oidpp, (*oidpp)->oid_number, (*oidpp)->oid_name, (*oidpp)->oid_kind, (*oidpp)->oid_arg1, (*oidpp)->oid_arg2, (*oidpp)->oid_handler); continue; } printf("%d %s ", (*oidpp)->oid_number, (*oidpp)->oid_name); printf("%c%c", (*oidpp)->oid_kind & CTLFLAG_RD ? 'R':' ', (*oidpp)->oid_kind & CTLFLAG_WR ? 'W':' '); switch ((*oidpp)->oid_kind & CTLTYPE) { case CTLTYPE_NODE: if ((*oidpp)->oid_handler) { printf(" Node(proc)\n"); } else { printf(" Node\n"); sysctl_sysctl_debug_dump_node( (*oidpp)->oid_arg1, i+2); } break; case CTLTYPE_INT: printf(" Int\n"); break; case CTLTYPE_STRING: printf(" String\n"); break; case CTLTYPE_QUAD: printf(" Quad\n"); break; case CTLTYPE_OPAQUE: printf(" Opaque/struct\n"); break; default: printf("\n"); } } } static int sysctl_sysctl_debug SYSCTL_HANDLER_ARGS { sysctl_sysctl_debug_dump_node(&sysctl_, 0); return ENOENT; } SYSCTL_PROC(_sysctl, 0, debug, CTLTYPE_STRING|CTLFLAG_RD, 0, 0, sysctl_sysctl_debug, ""); char domainname[MAXHOSTNAMELEN]; SYSCTL_STRING(_kern, KERN_DOMAINNAME, domainname, CTLFLAG_RW, &domainname, sizeof(domainname), ""); long hostid; /* Some trouble here, if sizeof (int) != sizeof (long) */ SYSCTL_INT(_kern, KERN_HOSTID, hostid, CTLFLAG_RW, &hostid, 0, ""); /* * Handle an integer, signed or unsigned. * Two cases: * a variable: point arg1 at it. * a constant: pass it in arg2. */ int sysctl_handle_int SYSCTL_HANDLER_ARGS { int error = 0; if (arg1) error = SYSCTL_OUT(req, arg1, sizeof(int)); else if (arg2) error = SYSCTL_OUT(req, &arg2, sizeof(int)); if (error || !req->newptr) return (error); if (!arg1) error = EPERM; else error = SYSCTL_IN(req, arg1, sizeof(int)); return (error); } /* * Handle our generic '\0' terminated 'C' string. * Two cases: * a variable string: point arg1 at it, arg2 is max length. * a constant string: point arg1 at it, arg2 is zero. */ int sysctl_handle_string SYSCTL_HANDLER_ARGS { int error=0; if (arg2) error = SYSCTL_OUT(req, arg1, arg2); else error = SYSCTL_OUT(req, arg1, strlen((char *)arg1)+1); if (error || !req->newptr || !arg2) return (error); if ((req->newlen - req->newidx) > arg2) { error = E2BIG; } else { arg2 = (req->newlen - req->newidx); error = SYSCTL_IN(req, arg1, arg2); ((char *)arg1)[arg2] = '\0'; } return (error); } /* * Handle any kind of opaque data. * arg1 points to it, arg2 is the size. */ int sysctl_handle_opaque SYSCTL_HANDLER_ARGS { int error; error = SYSCTL_OUT(req, arg1, arg2); if (error || !req->newptr) return (error); error = SYSCTL_IN(req, arg1, arg2); return (error); } /* * Transfer functions to/from kernel space. * XXX: rather untested at this point */ static int sysctl_old_kernel(struct sysctl_req *req, void *p, int l) { int i = 0; if (req->oldptr) { i = min(req->oldlen - req->oldidx, l); if (i > 0) bcopy(p, req->oldptr + req->oldidx, i); } req->oldidx += l; if (i != l) return (ENOMEM); return (0); } static int sysctl_new_kernel(struct sysctl_req *req, void *p, int l) { if (!req->newptr) return 0; if (req->newlen - req->newidx < l) return (EINVAL); bcopy(req->newptr + req->newidx, p, l); req->newidx += l; return (0); } /* * Transfer function to/from user space. */ static int sysctl_old_user(struct sysctl_req *req, void *p, int l) { int error = 0, i = 0; if (req->oldptr) { i = min(req->oldlen - req->oldidx, l); if (i > 0) error = copyout(p, req->oldptr + req->oldidx, i); } req->oldidx += l; if (error) return (error); if (req->oldptr && i < l) return (ENOMEM); return (0); } static int sysctl_new_user(struct sysctl_req *req, void *p, int l) { int error; if (!req->newptr) return 0; if (req->newlen - req->newidx < l) return (EINVAL); error = copyin(req->newptr + req->newidx, p, l); req->newidx += l; return (error); } /* * Locking and stats */ static struct sysctl_lock { int sl_lock; int sl_want; int sl_locked; } memlock; /* * Traverse our tree, and find the right node, execute whatever it points * at, and return the resulting error code. * We work entirely in kernel-space at this time. */ int sysctl_root SYSCTL_HANDLER_ARGS { int *name = (int *) arg1; int namelen = arg2; int indx, i, j; struct sysctl_oid **oidpp; struct linker_set *lsp = &sysctl_; j = lsp->ls_length; oidpp = (struct sysctl_oid **) lsp->ls_items; indx = 0; while (j-- && indx < CTL_MAXNAME) { if (*oidpp && ((*oidpp)->oid_number == name[indx])) { indx++; if (((*oidpp)->oid_kind & CTLTYPE) == CTLTYPE_NODE) { if ((*oidpp)->oid_handler) goto found; if (indx == namelen) return ENOENT; lsp = (struct linker_set*)(*oidpp)->oid_arg1; j = lsp->ls_length; oidpp = (struct sysctl_oid **)lsp->ls_items; } else { if (indx != namelen) return EISDIR; goto found; } } else { oidpp++; } } return ENOENT; found: /* If writing isn't allowed */ if (req->newptr && !((*oidpp)->oid_kind & CTLFLAG_WR)) return (EPERM); if (!(*oidpp)->oid_handler) return EINVAL; if (((*oidpp)->oid_kind & CTLTYPE) == CTLTYPE_NODE) { i = ((*oidpp)->oid_handler) (*oidpp, name + indx, namelen - indx, req); } else { i = ((*oidpp)->oid_handler) (*oidpp, (*oidpp)->oid_arg1, (*oidpp)->oid_arg2, req); } return (i); } #ifndef _SYS_SYSPROTO_H_ struct sysctl_args { int *name; u_int namelen; void *old; size_t *oldlenp; void *new; size_t newlen; }; #endif int __sysctl(p, uap, retval) struct proc *p; register struct sysctl_args *uap; int *retval; { int error, i, j, name[CTL_MAXNAME]; if (uap->namelen > CTL_MAXNAME || uap->namelen < 2) return (EINVAL); error = copyin(uap->name, &name, uap->namelen * sizeof(int)); if (error) return (error); error = userland_sysctl(p, name, uap->namelen, uap->old, uap->oldlenp, 0, uap->new, uap->newlen, &j); if (error && error != ENOMEM) return (error); if (uap->oldlenp) { i = copyout(&j, uap->oldlenp, sizeof(j)); if (i) return (i); } return (error); } static sysctlfn kern_sysctl; /* * This is used from various compatibility syscalls too. That's why name * must be in kernel space. */ int userland_sysctl(struct proc *p, int *name, u_int namelen, void *old, size_t *oldlenp, int inkernel, void *new, size_t newlen, int *retval) { int error = 0, dolock = 1, oldlen = 0; u_int savelen = 0; sysctlfn *fn; struct sysctl_req req; bzero(&req, sizeof req); req.p = p; if (new != NULL && (error = suser(p->p_ucred, &p->p_acflag))) return (error); if (oldlenp) { if (inkernel) { req.oldlen = *oldlenp; } else { error = copyin(oldlenp, &req.oldlen, sizeof(*oldlenp)); if (error) return (error); } } if (old) { if (!useracc(old, req.oldlen, B_WRITE)) return (EFAULT); req.oldptr= old; } if (newlen) { if (!useracc(new, req.newlen, B_READ)) return (EFAULT); req.newlen = newlen; req.newptr = new; } req.oldfunc = sysctl_old_user; req.newfunc = sysctl_new_user; error = sysctl_root(0, name, namelen, &req); /* if (error && error != ENOMEM) return (error); */ if (error == ENOENT) goto oldstuff; if (retval) { if (req.oldptr && req.oldidx > req.oldlen) *retval = req.oldlen; else *retval = req.oldidx; } return (error); oldstuff: oldlen = req.oldlen; switch (name[0]) { case CTL_KERN: fn = kern_sysctl; if (name[1] != KERN_VNODE) /* XXX */ dolock = 0; break; case CTL_HW: fn = hw_sysctl; break; case CTL_NET: fn = net_sysctl; break; case CTL_FS: fn = fs_sysctl; break; default: return (EOPNOTSUPP); } if (old != NULL) { if (!useracc(old, oldlen, B_WRITE)) return (EFAULT); while (memlock.sl_lock) { memlock.sl_want = 1; (void) tsleep((caddr_t)&memlock, PRIBIO+1, "sysctl", 0); memlock.sl_locked++; } memlock.sl_lock = 1; if (dolock) vslock(old, oldlen); savelen = oldlen; } error = (*fn)(name + 1, namelen - 1, old, &oldlen, new, newlen, p); if (old != NULL) { if (dolock) vsunlock(old, savelen, B_WRITE); memlock.sl_lock = 0; if (memlock.sl_want) { memlock.sl_want = 0; wakeup((caddr_t)&memlock); } } #if 0 if (error) { printf("SYSCTL_ERROR: "); for(i=0;inewptr) return (error); if (level < securelevel && req->p->p_pid != 1) return (EPERM); securelevel = level; return (error); } SYSCTL_PROC(_kern, KERN_SECURELVL, securelevel, CTLTYPE_INT|CTLFLAG_RW, 0, 0, sysctl_kern_securelvl, ""); static int sysctl_kern_dumpdev SYSCTL_HANDLER_ARGS { int error; dev_t ndumpdev; ndumpdev = dumpdev; error = sysctl_handle_opaque(oidp, &ndumpdev, sizeof ndumpdev, req); if (!error && ndumpdev != dumpdev) { error = setdumpdev(ndumpdev); } return (error); } SYSCTL_PROC(_kern, KERN_DUMPDEV, dumpdev, CTLTYPE_OPAQUE|CTLFLAG_RW, 0, sizeof dumpdev, sysctl_kern_dumpdev, ""); /* * hardware related system variables. */ int hw_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) int *name; u_int namelen; void *oldp; size_t *oldlenp; void *newp; size_t newlen; struct proc *p; { /* almost all sysctl names at this level are terminal */ if (namelen != 1 && name[0] != HW_DEVCONF) return (ENOTDIR); /* overloaded */ switch (name[0]) { case HW_PHYSMEM: return (sysctl_rdint(oldp, oldlenp, newp, ctob(physmem))); case HW_USERMEM: return (sysctl_rdint(oldp, oldlenp, newp, ctob(physmem - cnt.v_wire_count))); case HW_DEVCONF: return (dev_sysctl(name + 1, namelen - 1, oldp, oldlenp, newp, newlen, p)); default: return (EOPNOTSUPP); } /* NOTREACHED */ } /* * Validate parameters and get old / set new parameters * for an integer-valued sysctl function. */ int sysctl_int(oldp, oldlenp, newp, newlen, valp) void *oldp; size_t *oldlenp; void *newp; size_t newlen; int *valp; { int error = 0; if (oldp && *oldlenp < sizeof(int)) return (ENOMEM); if (newp && newlen != sizeof(int)) return (EINVAL); *oldlenp = sizeof(int); if (oldp) error = copyout(valp, oldp, sizeof(int)); if (error == 0 && newp) error = copyin(newp, valp, sizeof(int)); return (error); } /* * As above, but read-only. */ int sysctl_rdint(oldp, oldlenp, newp, val) void *oldp; size_t *oldlenp; void *newp; int val; { int error = 0; if (oldp && *oldlenp < sizeof(int)) return (ENOMEM); if (newp) return (EPERM); *oldlenp = sizeof(int); if (oldp) error = copyout((caddr_t)&val, oldp, sizeof(int)); return (error); } /* * Validate parameters and get old / set new parameters * for a string-valued sysctl function. */ int sysctl_string(oldp, oldlenp, newp, newlen, str, maxlen) void *oldp; size_t *oldlenp; void *newp; size_t newlen; char *str; int maxlen; { int len, error = 0, rval = 0; len = strlen(str) + 1; if (oldp && *oldlenp < len) { len = *oldlenp; rval = ENOMEM; } if (newp && newlen >= maxlen) return (EINVAL); if (oldp) { *oldlenp = len; error = copyout(str, oldp, len); if (error) rval = error; } if ((error == 0 || error == ENOMEM) && newp) { error = copyin(newp, str, newlen); if (error) rval = error; str[newlen] = 0; } return (rval); } /* * As above, but read-only. */ int sysctl_rdstring(oldp, oldlenp, newp, str) void *oldp; size_t *oldlenp; void *newp; char *str; { int len, error = 0, rval = 0; len = strlen(str) + 1; if (oldp && *oldlenp < len) { len = *oldlenp; rval = ENOMEM; } if (newp) return (EPERM); *oldlenp = len; if (oldp) error = copyout(str, oldp, len); if (error) rval = error; return (rval); } /* * Validate parameters and get old / set new parameters * for a structure oriented sysctl function. */ int sysctl_struct(oldp, oldlenp, newp, newlen, sp, len) void *oldp; size_t *oldlenp; void *newp; size_t newlen; void *sp; int len; { int error = 0; if (oldp && *oldlenp < len) return (ENOMEM); if (newp && newlen > len) return (EINVAL); if (oldp) { *oldlenp = len; error = copyout(sp, oldp, len); } if (error == 0 && newp) error = copyin(newp, sp, len); return (error); } /* * Validate parameters and get old parameters * for a structure oriented sysctl function. */ int sysctl_rdstruct(oldp, oldlenp, newp, sp, len) void *oldp; size_t *oldlenp; void *newp, *sp; int len; { int error = 0; if (oldp && *oldlenp < len) return (ENOMEM); if (newp) return (EPERM); *oldlenp = len; if (oldp) error = copyout(sp, oldp, len); return (error); } #ifdef COMPAT_43 #include #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) /* * XXX this is bloat, but I hope it's better here than on the potentially * limited kernel stack... -Peter */ 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!! :-) */ char bsdi_strings[80]; /* It had better be less than this! */ #ifndef _SYS_SYSPROTO_H_ struct getkerninfo_args { int op; char *where; int *size; int arg; }; #endif int ogetkerninfo(p, uap, retval) struct proc *p; register struct getkerninfo_args *uap; int *retval; { int error, name[6]; u_int 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, 0); 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, 0); 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, 0); 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, 0); 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, 0); 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, 0); 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, 0); 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. */ u_int needed; u_int left; char *s; bzero((char *)&bsdi_si, sizeof(bsdi_si)); bzero(bsdi_strings, sizeof(bsdi_strings)); s = bsdi_strings; bsdi_si.bsdi_ostype = (s - bsdi_strings) + sizeof(bsdi_si); strcpy(s, ostype); s += strlen(s) + 1; 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); *retval = size; if (uap->size) error = copyout((caddr_t)&size, (caddr_t)uap->size, sizeof(size)); return (error); } #endif /* COMPAT_43 */