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-rw-r--r--lib/libc/gen/sysctl.c183
1 files changed, 183 insertions, 0 deletions
diff --git a/lib/libc/gen/sysctl.c b/lib/libc/gen/sysctl.c
new file mode 100644
index 000000000000..a5a3d49f2530
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+++ b/lib/libc/gen/sysctl.c
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+/*-
+ * Copyright (c) 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * 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.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)sysctl.c 8.2 (Berkeley) 1/4/94";
+#endif /* LIBC_SCCS and not lint */
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/sysctl.h>
+
+#include <errno.h>
+#include <limits.h>
+#include <paths.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+
+extern int __sysctl(const int *name, u_int namelen, void *oldp,
+ size_t *oldlenp, const void *newp, size_t newlen);
+
+int
+sysctl(const int *name, u_int namelen, void *oldp, size_t *oldlenp,
+ const void *newp, size_t newlen)
+{
+ int retval;
+
+ retval = __sysctl(name, namelen, oldp, oldlenp, newp, newlen);
+ if (retval != -1 || errno != ENOENT || name[0] != CTL_USER)
+ return (retval);
+
+ if (newp != NULL) {
+ errno = EPERM;
+ return (-1);
+ }
+ if (namelen != 2) {
+ errno = EINVAL;
+ return (-1);
+ }
+
+ switch (name[1]) {
+ case USER_CS_PATH:
+ if (oldp && *oldlenp < sizeof(_PATH_STDPATH)) {
+ errno = ENOMEM;
+ return -1;
+ }
+ *oldlenp = sizeof(_PATH_STDPATH);
+ if (oldp != NULL)
+ memmove(oldp, _PATH_STDPATH, sizeof(_PATH_STDPATH));
+ return (0);
+ }
+
+ if (oldp && *oldlenp < sizeof(int)) {
+ errno = ENOMEM;
+ return (-1);
+ }
+ *oldlenp = sizeof(int);
+ if (oldp == NULL)
+ return (0);
+
+ switch (name[1]) {
+ case USER_BC_BASE_MAX:
+ *(int *)oldp = BC_BASE_MAX;
+ return (0);
+ case USER_BC_DIM_MAX:
+ *(int *)oldp = BC_DIM_MAX;
+ return (0);
+ case USER_BC_SCALE_MAX:
+ *(int *)oldp = BC_SCALE_MAX;
+ return (0);
+ case USER_BC_STRING_MAX:
+ *(int *)oldp = BC_STRING_MAX;
+ return (0);
+ case USER_COLL_WEIGHTS_MAX:
+ *(int *)oldp = COLL_WEIGHTS_MAX;
+ return (0);
+ case USER_EXPR_NEST_MAX:
+ *(int *)oldp = EXPR_NEST_MAX;
+ return (0);
+ case USER_LINE_MAX:
+ *(int *)oldp = LINE_MAX;
+ return (0);
+ case USER_RE_DUP_MAX:
+ *(int *)oldp = RE_DUP_MAX;
+ return (0);
+ case USER_POSIX2_VERSION:
+ *(int *)oldp = _POSIX2_VERSION;
+ return (0);
+ case USER_POSIX2_C_BIND:
+#ifdef POSIX2_C_BIND
+ *(int *)oldp = 1;
+#else
+ *(int *)oldp = 0;
+#endif
+ return (0);
+ case USER_POSIX2_C_DEV:
+#ifdef POSIX2_C_DEV
+ *(int *)oldp = 1;
+#else
+ *(int *)oldp = 0;
+#endif
+ return (0);
+ case USER_POSIX2_CHAR_TERM:
+#ifdef POSIX2_CHAR_TERM
+ *(int *)oldp = 1;
+#else
+ *(int *)oldp = 0;
+#endif
+ return (0);
+ case USER_POSIX2_FORT_DEV:
+#ifdef POSIX2_FORT_DEV
+ *(int *)oldp = 1;
+#else
+ *(int *)oldp = 0;
+#endif
+ return (0);
+ case USER_POSIX2_FORT_RUN:
+#ifdef POSIX2_FORT_RUN
+ *(int *)oldp = 1;
+#else
+ *(int *)oldp = 0;
+#endif
+ return (0);
+ case USER_POSIX2_LOCALEDEF:
+#ifdef POSIX2_LOCALEDEF
+ *(int *)oldp = 1;
+#else
+ *(int *)oldp = 0;
+#endif
+ return (0);
+ case USER_POSIX2_SW_DEV:
+#ifdef POSIX2_SW_DEV
+ *(int *)oldp = 1;
+#else
+ *(int *)oldp = 0;
+#endif
+ return (0);
+ case USER_POSIX2_UPE:
+#ifdef POSIX2_UPE
+ *(int *)oldp = 1;
+#else
+ *(int *)oldp = 0;
+#endif
+ return (0);
+ case USER_STREAM_MAX:
+ *(int *)oldp = FOPEN_MAX;
+ return (0);
+ case USER_TZNAME_MAX:
+ *(int *)oldp = NAME_MAX;
+ return (0);
+ default:
+ errno = EINVAL;
+ return (-1);
+ }
+ /* NOTREACHED */
+}