/*- * 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. * * Quite extensively rewritten by Poul-Henning Kamp of the FreeBSD * project, to make these variables more userfriendly. * * 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. 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 * $FreeBSD: src/sys/kern/kern_mib.c,v 1.29.2.4 2001/07/30 23:28:00 peter Exp $ */ #include #include #include #include #include #include #include #include #include #include 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_VFS, vfs, 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(_debug, OID_AUTO, sizeof, CTLFLAG_RW, 0, "Size of various kernel data structures"); 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_NODE(, CTL_P1003_1B, p1003_1b, CTLFLAG_RW, 0, "p1003_1b, (see p1003_1b.h)"); SYSCTL_NODE(, CTL_LWKT, lwkt, CTLFLAG_RW, 0, "light weight kernel threads"); SYSCTL_NODE(, OID_AUTO, compat, CTLFLAG_RW, 0, "Compatibility code"); SYSCTL_NODE(, OID_AUTO, security, CTLFLAG_RW, 0, "Security"); SYSCTL_STRING(_kern, OID_AUTO, ident, CTLFLAG_RD | CTLFLAG_NOLOCK, kern_ident, 0, "Kernel identifier"); SYSCTL_STRING(_kern, KERN_OSRELEASE, osrelease, CTLFLAG_RD | CTLFLAG_NOLOCK, osrelease, 0, "Operating system type"); SYSCTL_INT(_kern, KERN_OSREV, osrevision, CTLFLAG_RD, 0, __DragonFly_version, "Operating system revision"); SYSCTL_STRING(_kern, KERN_VERSION, version, CTLFLAG_RD | CTLFLAG_NOLOCK, version, 0, "Kernel version"); SYSCTL_STRING(_kern, KERN_OSTYPE, ostype, CTLFLAG_RD | CTLFLAG_NOLOCK, ostype, 0, "Operating system type"); SYSCTL_INT(_kern, KERN_OSRELDATE, osreldate, CTLFLAG_RD, &osreldate, 0, "Operating system release date"); static int tls_extra = RTLD_STATIC_TLS_EXTRA_DEFAULT; SYSCTL_INT(_kern, KERN_STATIC_TLS_EXTRA, tls_extra, CTLFLAG_RW | CTLFLAG_NOLOCK, &tls_extra, 0, "Extra static tls space for libraries"); SYSCTL_INT(_kern, KERN_MAXPROC, maxproc, CTLFLAG_RD, &maxproc, 0, "Maximum number of processes"); SYSCTL_INT(_kern, KERN_MAXPROCPERUID, maxprocperuid, CTLFLAG_RW, &maxprocperuid, 0, "Maximum processes allowed per userid"); SYSCTL_INT(_kern, KERN_MAXPOSIXLOCKSPERUID, maxposixlocksperuid, CTLFLAG_RW, &maxposixlocksperuid, 0, "Maximum number of POSIX-type locks per user id"); SYSCTL_INT(_kern, OID_AUTO, maxusers, CTLFLAG_RD, &maxusers, 0, "Hint for kernel tuning"); SYSCTL_INT(_kern, KERN_ARGMAX, argmax, CTLFLAG_RD, 0, ARG_MAX, "Maximum bytes of argument to execve(2)"); SYSCTL_INT(_kern, KERN_POSIX1, posix1version, CTLFLAG_RD, 0, _POSIX_VERSION, "Version of POSIX attempting to comply to"); SYSCTL_INT(_kern, KERN_NGROUPS, ngroups, CTLFLAG_RD, 0, NGROUPS_MAX, "Maximum number of groups a user can belong to"); SYSCTL_INT(_kern, KERN_JOB_CONTROL, job_control, CTLFLAG_RD, 0, 1, "Whether job control is available"); #ifdef _POSIX_SAVED_IDS SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD, 0, 1, "Whether saved set-group/user ID is available"); #else SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD, 0, 0, "Whether saved set-group/user ID is available"); #endif char kernelname[MAXPATHLEN] = "/kernel"; /* XXX bloat */ SYSCTL_STRING(_kern, KERN_BOOTFILE, bootfile, CTLFLAG_RW, kernelname, sizeof kernelname, "Name of kernel file booted"); SYSCTL_INT(_hw, HW_NCPU, ncpu, CTLFLAG_RD, &ncpus, 0, "Number of active CPUs"); SYSCTL_INT(_hw, HW_BYTEORDER, byteorder, CTLFLAG_RD, 0, BYTE_ORDER, "System byte order"); SYSCTL_INT(_hw, HW_PAGESIZE, pagesize, CTLFLAG_RD, 0, PAGE_SIZE, "System memory page size"); static char platform[] = MACHINE_PLATFORM; SYSCTL_STRING(_hw, HW_MACHINE_PLATFORM, platform, CTLFLAG_RD | CTLFLAG_NOLOCK, platform, 0, "Platform architecture"); static char machine_arch[] = MACHINE_ARCH; SYSCTL_STRING(_hw, HW_MACHINE_ARCH, machine_arch, CTLFLAG_RD | CTLFLAG_NOLOCK, machine_arch, 0, "Cpu architecture"); char hostname[MAXHOSTNAMELEN]; /* * Hostname sysctl handler. We use CTLFLAG_NOLOCK to avoid acquiring * the per-oid lock. The per-cpu SLOCK is still acquired, so to interlock * against setting the hostname we relock with XLOCK. The result is * that the critical path (just reading the hostname) gets one less lock * and will have improved performance. */ static int sysctl_hostname(SYSCTL_HANDLER_ARGS) { struct thread *td = req->td; struct proc *p = td ? td->td_proc : NULL; struct prison *pr; int error; if (req->newptr) { SYSCTL_SUNLOCK(); SYSCTL_XLOCK(); } if (p) pr = p->p_ucred->cr_prison; if (p && pr) { if (!PRISON_CAP_ISSET(pr->pr_caps, PRISON_CAP_SYS_SET_HOSTNAME) && req->newptr) return(EPERM); error = sysctl_handle_string(oidp, p->p_ucred->cr_prison->pr_host, sizeof p->p_ucred->cr_prison->pr_host, req); } else { error = sysctl_handle_string(oidp, hostname, sizeof hostname, req); } if (req->newptr) { SYSCTL_XUNLOCK(); SYSCTL_SLOCK(); } return (error); } SYSCTL_PROC(_kern, KERN_HOSTNAME, hostname, CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_NOLOCK, 0, 0, sysctl_hostname, "A", "Hostname"); int securelevel = -1; int kernel_mem_readonly = 0; static int sysctl_kern_securelvl(SYSCTL_HANDLER_ARGS) { int error, level; level = securelevel; error = sysctl_handle_int(oidp, &level, 0, req); if (error || !req->newptr) return (error); if (level < securelevel) return (EPERM); securelevel = level; return (error); } SYSCTL_PROC(_kern, KERN_SECURELVL, securelevel, CTLTYPE_INT|CTLFLAG_RW, 0, 0, sysctl_kern_securelvl, "I", "Current secure level"); char domainname[MAXHOSTNAMELEN]; SYSCTL_STRING(_kern, KERN_NISDOMAINNAME, domainname, CTLFLAG_RW, &domainname, sizeof(domainname), "Name of the current YP/NIS domain"); unsigned long hostid; SYSCTL_ULONG(_kern, KERN_HOSTID, hostid, CTLFLAG_RW, &hostid, 0, "Host ID"); /* * This is really cheating. These actually live in the libc, something * which I'm not quite sure is a good idea anyway, but in order for * getnext and friends to actually work, we define dummies here. */ SYSCTL_STRING(_user, USER_CS_PATH, cs_path, CTLFLAG_RD, "", 0, "PATH that finds all the standard utilities"); SYSCTL_INT(_user, USER_BC_BASE_MAX, bc_base_max, CTLFLAG_RD, 0, 0, "Max ibase/obase values in bc(1)"); SYSCTL_INT(_user, USER_BC_DIM_MAX, bc_dim_max, CTLFLAG_RD, 0, 0, "Max array size in bc(1)"); SYSCTL_INT(_user, USER_BC_SCALE_MAX, bc_scale_max, CTLFLAG_RD, 0, 0, "Max scale value in bc(1)"); SYSCTL_INT(_user, USER_BC_STRING_MAX, bc_string_max, CTLFLAG_RD, 0, 0, "Max string length in bc(1)"); SYSCTL_INT(_user, USER_COLL_WEIGHTS_MAX, coll_weights_max, CTLFLAG_RD, 0, 0, "Maximum number of weights assigned to an LC_COLLATE locale entry"); SYSCTL_INT(_user, USER_EXPR_NEST_MAX, expr_nest_max, CTLFLAG_RD, 0, 0, ""); SYSCTL_INT(_user, USER_LINE_MAX, line_max, CTLFLAG_RD, 0, 0, "Max length (bytes) of a text-processing utility's input line"); SYSCTL_INT(_user, USER_RE_DUP_MAX, re_dup_max, CTLFLAG_RD, 0, 0, "Maximum number of repeats of a regexp permitted"); SYSCTL_INT(_user, USER_POSIX2_VERSION, posix2_version, CTLFLAG_RD, 0, 0, "The version of POSIX 1003.2 with which the system attempts to comply"); SYSCTL_INT(_user, USER_POSIX2_C_BIND, posix2_c_bind, CTLFLAG_RD, 0, 0, "Whether C development supports the C bindings option"); SYSCTL_INT(_user, USER_POSIX2_C_DEV, posix2_c_dev, CTLFLAG_RD, 0, 0, "Whether system supports the C development utilities option"); SYSCTL_INT(_user, USER_POSIX2_CHAR_TERM, posix2_char_term, CTLFLAG_RD, 0, 0, ""); SYSCTL_INT(_user, USER_POSIX2_FORT_DEV, posix2_fort_dev, CTLFLAG_RD, 0, 0, "Whether system supports FORTRAN development utilities"); SYSCTL_INT(_user, USER_POSIX2_FORT_RUN, posix2_fort_run, CTLFLAG_RD, 0, 0, "Whether system supports FORTRAN runtime utilities"); SYSCTL_INT(_user, USER_POSIX2_LOCALEDEF, posix2_localedef, CTLFLAG_RD, 0, 0, "Whether system supports creation of locales"); SYSCTL_INT(_user, USER_POSIX2_SW_DEV, posix2_sw_dev, CTLFLAG_RD, 0, 0, "Whether system supports software development utilities"); SYSCTL_INT(_user, USER_POSIX2_UPE, posix2_upe, CTLFLAG_RD, 0, 0, "Whether system supports the user portability utilities"); SYSCTL_INT(_user, USER_STREAM_MAX, stream_max, CTLFLAG_RD, 0, 0, "Min Maximum number of streams a process may have open at one time"); SYSCTL_INT(_user, USER_TZNAME_MAX, tzname_max, CTLFLAG_RD, 0, 0, "Min Maximum number of types supported for timezone names"); #include SYSCTL_INT(_debug_sizeof, OID_AUTO, vnode, CTLFLAG_RD, 0, sizeof(struct vnode), "sizeof(struct vnode)"); SYSCTL_INT(_debug_sizeof, OID_AUTO, proc, CTLFLAG_RD, 0, sizeof(struct proc), "sizeof(struct proc)"); #include SYSCTL_INT(_debug_sizeof, OID_AUTO, cdev, CTLFLAG_RD, 0, sizeof(struct cdev), "sizeof(struct cdev)"); SYSCTL_NODE(_kern, OID_AUTO, features, CTLFLAG_RD, 0, "Kernel Features");