#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)sysctl.c 8.2 (Berkeley) 1/4/94";
#endif
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/lib/libc/gen/sysctl.c,v 1.6 2007/01/09 00:27:55 imp Exp $");
#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(int *name, u_int namelen, void *oldp, size_t *oldlenp,
void *newp, size_t newlen);
int
sysctl(name, namelen, oldp, oldlenp, newp, newlen)
int *name;
u_int namelen;
void *oldp, *newp;
size_t *oldlenp, newlen;
{
if (name[0] != CTL_USER) {
if (namelen == 2 && name[0] == CTL_KERN && name[1] == KERN_EXEC) {
if (newp != NULL) {
errno = EPERM;
return -1;
}
if (oldp == NULL) {
if (oldlenp != NULL) *oldlenp = 2;
return 0;
}
if (oldlenp == NULL) {
errno = EFAULT;
return -1;
}
if (*oldlenp < 2) {
errno = ENOMEM;
return -1;
}
memmove(oldp, "/", 2);
*oldlenp = 2;
return 0;
}
return (__sysctl(name, namelen, oldp, oldlenp, newp, newlen));
}
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);
}
}