diff options
Diffstat (limited to 'cpukit/libnetworking/kern/kern_mib.c')
| -rw-r--r-- | cpukit/libnetworking/kern/kern_mib.c | 385 |
1 files changed, 385 insertions, 0 deletions
diff --git a/cpukit/libnetworking/kern/kern_mib.c b/cpukit/libnetworking/kern/kern_mib.c new file mode 100644 index 0000000000..6471208786 --- /dev/null +++ b/cpukit/libnetworking/kern/kern_mib.c @@ -0,0 +1,385 @@ +/*- + * 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. + * 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 + * $FreeBSD: src/sys/kern/kern_mib.c,v 1.74 2005/02/28 21:42:56 wes Exp $ + */ + +/* + * $Id$ + */ + +#ifndef __rtems__ +#include "opt_posix.h" +#endif + +#include <sys/param.h> +#include <sys/kernel.h> +#include <sys/systm.h> +#include <sys/sysctl.h> +#include <sys/proc.h> +#ifndef __rtems__ +#include <sys/lock.h> +#include <sys/mutex.h> +#include <sys/jail.h> +#include <sys/smp.h> +#endif +#include <sys/unistd.h> + +#ifdef __rtems__ +char machine[] = "SET ME"; +char osrelease[] = RTEMS_VERSION; +char ostype[] = "RTEMS"; +#endif + +SYSCTL_NODE(, 0, sysctl, CTLFLAG_RW, 0, + "Sysctl internal magic"); +SYSCTL_NODE(, CTL_KERN, kern, CTLFLAG_RW, 0, + "High kernel, proc, limits &c"); +#ifndef __rtems__ +SYSCTL_NODE(, CTL_VM, vm, CTLFLAG_RW, 0, + "Virtual memory"); +SYSCTL_NODE(, CTL_VFS, vfs, CTLFLAG_RW, 0, + "File system"); +#endif +SYSCTL_NODE(, CTL_NET, net, CTLFLAG_RW, 0, + "Network, (see socket.h)"); +#ifndef __rtems__ +SYSCTL_NODE(, CTL_DEBUG, debug, CTLFLAG_RW, 0, + "Debugging"); +SYSCTL_NODE(_debug, OID_AUTO, sizeof, CTLFLAG_RW, 0, + "Sizeof various things"); +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(, OID_AUTO, compat, CTLFLAG_RW, 0, + "Compatibility code"); +SYSCTL_NODE(, OID_AUTO, security, CTLFLAG_RW, 0, + "Security"); +#ifdef REGRESSION +SYSCTL_NODE(, OID_AUTO, regression, CTLFLAG_RW, 0, + "Regression test MIB"); +#endif + +SYSCTL_STRING(_kern, OID_AUTO, ident, CTLFLAG_RD, + kern_ident, 0, "Kernel identifier"); +#endif /* __rtems__ */ + +SYSCTL_STRING(_kern, KERN_OSRELEASE, osrelease, CTLFLAG_RD, + osrelease, 0, "Operating system release"); + +SYSCTL_INT(_kern, KERN_OSREV, osrevision, CTLFLAG_RD, + 0, BSD, "Operating system revision"); + +#ifndef __rtems__ +SYSCTL_STRING(_kern, KERN_VERSION, version, CTLFLAG_RD, + version, 0, "Kernel version"); +#endif + +SYSCTL_STRING(_kern, KERN_OSTYPE, ostype, CTLFLAG_RD, + ostype, 0, "Operating system type"); + +#ifndef __rtems__ +extern int osreldate; +SYSCTL_INT(_kern, KERN_OSRELDATE, osreldate, CTLFLAG_RD, + &osreldate, 0, "Operating system release date"); + +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, 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"); + +#ifdef SMP +SYSCTL_INT(_hw, HW_NCPU, ncpu, CTLFLAG_RD, + &mp_ncpus, 0, "Number of active CPUs"); +#else +SYSCTL_INT(_hw, HW_NCPU, ncpu, CTLFLAG_RD, + 0, 1, "Number of active CPUs"); +#endif + +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 int +sysctl_hw_physmem(SYSCTL_HANDLER_ARGS) +{ + u_long val; + + val = ctob(physmem); + return (sysctl_handle_long(oidp, &val, 0, req)); +} + +SYSCTL_PROC(_hw, HW_PHYSMEM, physmem, CTLTYPE_ULONG | CTLFLAG_RD, + 0, 0, sysctl_hw_physmem, "LU", ""); + +static int +sysctl_hw_usermem(SYSCTL_HANDLER_ARGS) +{ + u_long val; + + val = ctob(physmem - cnt.v_wire_count); + return (sysctl_handle_long(oidp, &val, 0, req)); +} + +SYSCTL_PROC(_hw, HW_USERMEM, usermem, CTLTYPE_ULONG | CTLFLAG_RD, + 0, 0, sysctl_hw_usermem, "LU", ""); + +SYSCTL_ULONG(_hw, OID_AUTO, availpages, CTLFLAG_RD, &physmem, 0, ""); + +static char machine_arch[] = MACHINE_ARCH; +SYSCTL_STRING(_hw, HW_MACHINE_ARCH, machine_arch, CTLFLAG_RD, + machine_arch, 0, "System architecture"); + +char hostname[MAXHOSTNAMELEN]; + +static int +sysctl_hostname(SYSCTL_HANDLER_ARGS) +{ + struct prison *pr; + char tmphostname[MAXHOSTNAMELEN]; + int error; + + pr = req->td->td_ucred->cr_prison; + if (pr != NULL) { + if (!jail_set_hostname_allowed && req->newptr) + return (EPERM); + /* + * Process is in jail, so make a local copy of jail + * hostname to get/set so we don't have to hold the jail + * mutex during the sysctl copyin/copyout activities. + */ + mtx_lock(&pr->pr_mtx); + bcopy(pr->pr_host, tmphostname, MAXHOSTNAMELEN); + mtx_unlock(&pr->pr_mtx); + + error = sysctl_handle_string(oidp, tmphostname, + sizeof pr->pr_host, req); + + if (req->newptr != NULL && error == 0) { + /* + * Copy the locally set hostname to the jail, if + * appropriate. + */ + mtx_lock(&pr->pr_mtx); + bcopy(tmphostname, pr->pr_host, MAXHOSTNAMELEN); + mtx_unlock(&pr->pr_mtx); + } + } else + error = sysctl_handle_string(oidp, + hostname, sizeof hostname, req); + return (error); +} + +SYSCTL_PROC(_kern, KERN_HOSTNAME, hostname, + CTLTYPE_STRING|CTLFLAG_RW|CTLFLAG_PRISON, + 0, 0, sysctl_hostname, "A", "Hostname"); + +static int regression_securelevel_nonmonotonic = 0; + +#ifdef REGRESSION +SYSCTL_INT(_regression, OID_AUTO, securelevel_nonmonotonic, CTLFLAG_RW, + ®ression_securelevel_nonmonotonic, 0, "securelevel may be lowered"); +#endif + +int securelevel = -1; +struct mtx securelevel_mtx; + +MTX_SYSINIT(securelevel_lock, &securelevel_mtx, "securelevel mutex lock", + MTX_DEF); + +static int +sysctl_kern_securelvl(SYSCTL_HANDLER_ARGS) +{ + struct prison *pr; + int error, level; + + pr = req->td->td_ucred->cr_prison; + + /* + * If the process is in jail, return the maximum of the global and + * local levels; otherwise, return the global level. + */ + if (pr != NULL) { + mtx_lock(&pr->pr_mtx); + level = imax(securelevel, pr->pr_securelevel); + mtx_unlock(&pr->pr_mtx); + } else + level = securelevel; + error = sysctl_handle_int(oidp, &level, 0, req); + if (error || !req->newptr) + return (error); + /* + * Permit update only if the new securelevel exceeds the + * global level, and local level if any. + */ + if (pr != NULL) { + mtx_lock(&pr->pr_mtx); + if (!regression_securelevel_nonmonotonic && + (level < imax(securelevel, pr->pr_securelevel))) { + mtx_unlock(&pr->pr_mtx); + return (EPERM); + } + pr->pr_securelevel = level; + mtx_unlock(&pr->pr_mtx); + } else { + mtx_lock(&securelevel_mtx); + if (!regression_securelevel_nonmonotonic && + (level < securelevel)) { + mtx_unlock(&securelevel_mtx); + return (EPERM); + } + securelevel = level; + mtx_unlock(&securelevel_mtx); + } + return (error); +} + +SYSCTL_PROC(_kern, KERN_SECURELVL, securelevel, + CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_PRISON, 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"); + +u_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 <sys/vnode.h> +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 <sys/conf.h> +SYSCTL_INT(_debug_sizeof, OID_AUTO, cdev, CTLFLAG_RD, + 0, sizeof(struct cdev), "sizeof(struct cdev)"); + +#include <sys/bio.h> +#include <sys/buf.h> +SYSCTL_INT(_debug_sizeof, OID_AUTO, bio, CTLFLAG_RD, + 0, sizeof(struct bio), "sizeof(struct bio)"); +SYSCTL_INT(_debug_sizeof, OID_AUTO, buf, CTLFLAG_RD, + 0, sizeof(struct buf), "sizeof(struct buf)"); + +#include <sys/user.h> +SYSCTL_INT(_debug_sizeof, OID_AUTO, kinfo_proc, CTLFLAG_RD, + 0, sizeof(struct kinfo_proc), "sizeof(struct kinfo_proc)"); + +#endif /* __rtems__ */ |