/*- * 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 1.36 1995/11/11 00:09:21 bde 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_MAXFILESPERPROC, maxfilesperproc, CTLFLAG_RD, &maxfilesperproc, 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, ""); SYSCTL_INT(_kern, KERN_MAXFILES, maxfiles, CTLFLAG_RW, &maxfiles, 0, ""); #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, oldp, oldlenp, newp, newlen); 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]; int hostnamelen; static int sysctl_kern_hostname SYSCTL_HANDLER_ARGS { int error = sysctl_handle_string(oidp, oidp->oid_arg1, oidp->oid_arg2, oldp, oldlenp, newp, newlen); if (newp && (error == 0 || error == ENOMEM)) hostnamelen = newlen; return error; } SYSCTL_PROC(_kern, KERN_HOSTNAME, hostname, CTLTYPE_STRING|CTLFLAG_RW, &hostname, sizeof(hostname), sysctl_kern_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]; int domainnamelen; static int sysctl_kern_domainname SYSCTL_HANDLER_ARGS { int error = sysctl_handle_string(oidp, oidp->oid_arg1, oidp->oid_arg2, oldp, oldlenp, newp, newlen); if (newp && (error == 0 || error == ENOMEM)) domainnamelen = newlen; return error; } SYSCTL_PROC(_kern, KERN_DOMAINNAME, domainname, CTLTYPE_STRING|CTLFLAG_RW, &domainname, sizeof(domainname), sysctl_kern_domainname, ""); long hostid; /* Some trouble here, if sizeof (int) != sizeof (long) */ SYSCTL_INT(_kern, KERN_HOSTID, hostid, CTLFLAG_RW, &hostid, 0, ""); int sysctl_handle_int SYSCTL_HANDLER_ARGS { /* If there isn't sufficient space to return */ if (oldp && *oldlenp < sizeof(int)) return (ENOMEM); /* If it is a constant, don't write */ if (newp && !arg1) return (EPERM); /* If we get more than an int */ if (newp && newlen != sizeof(int)) return (EINVAL); *oldlenp = sizeof(int); if (oldp && arg1 ) bcopy(arg1, oldp, sizeof(int)); else if (oldp) bcopy(&arg2, oldp, sizeof(int)); if (newp) bcopy(newp, arg1, sizeof(int)); return (0); } int sysctl_handle_string SYSCTL_HANDLER_ARGS { int len, error=0; char *str = (char *)arg1; len = strlen(str) + 1; if (oldp && *oldlenp < len) { len = *oldlenp; error=ENOMEM; } if (newp && newlen >= arg2) return (EINVAL); if (oldp) { *oldlenp = len; bcopy(str, oldp, len); } if (newp) { bcopy(newp, str, newlen); str[newlen] = 0; } return (error); } int sysctl_handle_opaque SYSCTL_HANDLER_ARGS { if (oldp && *oldlenp < arg2) return (ENOMEM); if (newp && newlen != arg2) return (EINVAL); if (oldp) { *oldlenp = arg2; bcopy(arg1, oldp, arg2); } if (newp) bcopy(newp, arg1, arg2); return (0); } #ifdef DEBUG static sysctlfn debug_sysctl; #endif /* * 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 EJUSTRETURN; found: /* If writing isn't allowed */ if (newp && !((*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, oldp, oldlenp, newp, newlen); } else { i = ((*oidpp)->oid_handler) (*oidpp, (*oidpp)->oid_arg1, (*oidpp)->oid_arg2, oldp, oldlenp, newp, newlen); } 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, 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); return (userland_sysctl(p, name, uap->namelen, uap->old, uap->oldlenp, 0, uap->new, uap->newlen, retval)); } 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, i; u_int savelen = 0, oldlen = 0; sysctlfn *fn; void *oldp = 0; void *newp = 0; if (new != NULL && (error = suser(p->p_ucred, &p->p_acflag))) return (error); if (oldlenp) { if (inkernel) { oldlen = *oldlenp; } else { error = copyin(oldlenp, &oldlen, sizeof(oldlen)); if (error) return (error); } } if (old) oldp = malloc(oldlen, M_TEMP, M_WAITOK); if (newlen) { newp = malloc(newlen, M_TEMP, M_WAITOK); error = copyin(new, newp, newlen); } if (error) { if (oldp) free(oldp, M_TEMP); if (newp) free(newp, M_TEMP); return error; } error = sysctl_root(0, name, namelen, oldp, &oldlen, newp, newlen); if (!error || error == ENOMEM) { if (retval) *retval = oldlen; if (oldlenp) { if (inkernel) { *oldlenp = oldlen; } else { i = copyout(&oldlen, oldlenp, sizeof(oldlen)); if (i) error = i; } } if ((error == ENOMEM || !error ) && oldp) { i = copyout(oldp, old, oldlen); if (i) error = i; free(oldp, M_TEMP); } if (newp) free(newp, M_TEMP); return (error); } if (oldp) free(oldp, M_TEMP); if (newp) free(newp, M_TEMP); 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_VM: fn = vm_sysctl; break; case CTL_NET: fn = net_sysctl; break; case CTL_FS: fn = fs_sysctl; break; #ifdef DEBUG case CTL_DEBUG: fn = debug_sysctl; break; #endif 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;ip_pid != 1) return (EPERM); securelevel = level; return (0); case KERN_VNODE: return (sysctl_vnode(oldp, oldlenp)); case KERN_PROC: return (sysctl_doproc(name + 1, namelen - 1, oldp, oldlenp)); case KERN_FILE: return (sysctl_file(oldp, oldlenp)); #ifdef GPROF case KERN_PROF: return (sysctl_doprof(name + 1, namelen - 1, oldp, oldlenp, newp, newlen)); #endif case KERN_NTP_PLL: return (ntp_sysctl(name + 1, namelen - 1, oldp, oldlenp, newp, newlen, p)); case KERN_DUMPDEV: ndumpdev = dumpdev; error = sysctl_struct(oldp, oldlenp, newp, newlen, &ndumpdev, sizeof ndumpdev); if (!error && ndumpdev != dumpdev) { error = setdumpdev(ndumpdev); } return error; default: return (EOPNOTSUPP); } /* NOTREACHED */ } /* * 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 */ } #ifdef DEBUG /* * Debugging related system variables. */ struct ctldebug debug0, debug1, debug2, debug3, debug4; struct ctldebug debug5, debug6, debug7, debug8, debug9; struct ctldebug debug10, debug11, debug12, debug13, debug14; struct ctldebug debug15, debug16, debug17, debug18, debug19; static struct ctldebug *debugvars[CTL_DEBUG_MAXID] = { &debug0, &debug1, &debug2, &debug3, &debug4, &debug5, &debug6, &debug7, &debug8, &debug9, &debug10, &debug11, &debug12, &debug13, &debug14, &debug15, &debug16, &debug17, &debug18, &debug19, }; static int debug_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; { struct ctldebug *cdp; /* all sysctl names at this level are name and field */ if (namelen != 2) return (ENOTDIR); /* overloaded */ cdp = debugvars[name[0]]; if (cdp->debugname == 0) return (EOPNOTSUPP); switch (name[1]) { case CTL_DEBUG_NAME: return (sysctl_rdstring(oldp, oldlenp, newp, cdp->debugname)); case CTL_DEBUG_VALUE: return (sysctl_int(oldp, oldlenp, newp, newlen, cdp->debugvar)); default: return (EOPNOTSUPP); } /* NOTREACHED */ } #endif /* DEBUG */ /* * 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); } /* * Get file structures. */ int sysctl_file(where, sizep) char *where; size_t *sizep; { int buflen, error; struct file *fp; char *start = where; buflen = *sizep; if (where == NULL) { /* * overestimate by 10 files */ *sizep = sizeof(filehead) + (nfiles + 10) * sizeof(struct file); return (0); } /* * first copyout filehead */ if (buflen < sizeof(filehead)) { *sizep = 0; return (0); } error = copyout((caddr_t)&filehead, where, sizeof(filehead)); if (error) return (error); buflen -= sizeof(filehead); where += sizeof(filehead); /* * followed by an array of file structures */ for (fp = filehead; fp != NULL; fp = fp->f_filef) { if (buflen < sizeof(struct file)) { *sizep = where - start; return (ENOMEM); } error = copyout((caddr_t)fp, where, sizeof (struct file)); if (error) return (error); buflen -= sizeof(struct file); where += sizeof(struct file); } *sizep = where - start; return (0); } /* * try over estimating by 5 procs */ #define KERN_PROCSLOP (5 * sizeof (struct kinfo_proc)) int sysctl_doproc(name, namelen, where, sizep) int *name; u_int namelen; char *where; size_t *sizep; { register struct proc *p; register struct kinfo_proc *dp = (struct kinfo_proc *)where; register int needed = 0; int buflen = where != NULL ? *sizep : 0; int doingzomb; struct eproc eproc; int error = 0; if (namelen != 2 && !(namelen == 1 && name[0] == KERN_PROC_ALL)) return (EINVAL); p = (struct proc *)allproc; doingzomb = 0; again: for (; p != NULL; p = p->p_next) { /* * Skip embryonic processes. */ if (p->p_stat == SIDL) continue; /* * TODO - make more efficient (see notes below). * do by session. */ switch (name[0]) { case KERN_PROC_PID: /* could do this with just a lookup */ if (p->p_pid != (pid_t)name[1]) continue; break; case KERN_PROC_PGRP: /* could do this by traversing pgrp */ if (p->p_pgrp == NULL || p->p_pgrp->pg_id != (pid_t)name[1]) continue; break; case KERN_PROC_TTY: if ((p->p_flag & P_CONTROLT) == 0 || p->p_session == NULL || p->p_session->s_ttyp == NULL || p->p_session->s_ttyp->t_dev != (dev_t)name[1]) continue; break; case KERN_PROC_UID: if (p->p_ucred == NULL || p->p_ucred->cr_uid != (uid_t)name[1]) continue; break; case KERN_PROC_RUID: if (p->p_ucred == NULL || p->p_cred->p_ruid != (uid_t)name[1]) continue; break; } if (buflen >= sizeof(struct kinfo_proc)) { fill_eproc(p, &eproc); error = copyout((caddr_t)p, &dp->kp_proc, sizeof(struct proc)); if (error) return (error); error = copyout((caddr_t)&eproc, &dp->kp_eproc, sizeof(eproc)); if (error) return (error); dp++; buflen -= sizeof(struct kinfo_proc); } needed += sizeof(struct kinfo_proc); } if (doingzomb == 0) { p = zombproc; doingzomb++; goto again; } if (where != NULL) { *sizep = (caddr_t)dp - where; if (needed > *sizep) return (ENOMEM); } else { needed += KERN_PROCSLOP; *sizep = needed; } return (0); } /* * Fill in an eproc structure for the specified process. */ void fill_eproc(p, ep) register struct proc *p; register struct eproc *ep; { register struct tty *tp; bzero(ep, sizeof(*ep)); ep->e_paddr = p; if (p->p_cred) { ep->e_pcred = *p->p_cred; if (p->p_ucred) ep->e_ucred = *p->p_ucred; } if (p->p_stat != SIDL && p->p_stat != SZOMB && p->p_vmspace != NULL) { register struct vmspace *vm = p->p_vmspace; #ifdef pmap_resident_count ep->e_vm.vm_rssize = pmap_resident_count(&vm->vm_pmap); /*XXX*/ #else ep->e_vm.vm_rssize = vm->vm_rssize; #endif ep->e_vm.vm_tsize = vm->vm_tsize; ep->e_vm.vm_dsize = vm->vm_dsize; ep->e_vm.vm_ssize = vm->vm_ssize; #ifndef sparc ep->e_vm.vm_pmap = vm->vm_pmap; #endif } if (p->p_pptr) ep->e_ppid = p->p_pptr->p_pid; if (p->p_pgrp) { ep->e_sess = p->p_pgrp->pg_session; ep->e_pgid = p->p_pgrp->pg_id; ep->e_jobc = p->p_pgrp->pg_jobc; } if ((p->p_flag & P_CONTROLT) && (ep->e_sess != NULL) && ((tp = ep->e_sess->s_ttyp) != NULL)) { ep->e_tdev = tp->t_dev; ep->e_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PID; ep->e_tsess = tp->t_session; } else ep->e_tdev = NODEV; if (ep->e_sess && ep->e_sess->s_ttyvp) ep->e_flag = EPROC_CTTY; if (SESS_LEADER(p)) ep->e_flag |= EPROC_SLEADER; if (p->p_wmesg) { strncpy(ep->e_wmesg, p->p_wmesg, WMESGLEN); ep->e_wmesg[WMESGLEN] = 0; } } #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 */