#include <unistd.h>
#include <limits.h>
#include <errno.h>
+#include <sys/resource.h>
+#include <signal.h>
+#include "syscall.h"
+#include "libc.h"
#define VER (-2)
#define OFLOW (-3)
+#define CPUCNT (-4)
+#define RLIM(x) (-32768|(RLIMIT_ ## x))
long sysconf(int name)
{
static const short values[] = {
[_SC_ARG_MAX] = OFLOW,
- [_SC_CHILD_MAX] = -1,
+ [_SC_CHILD_MAX] = RLIM(NPROC),
[_SC_CLK_TCK] = 100,
[_SC_NGROUPS_MAX] = 32,
- [_SC_OPEN_MAX] = 1024,
+ [_SC_OPEN_MAX] = RLIM(NOFILE),
[_SC_STREAM_MAX] = -1,
[_SC_TZNAME_MAX] = TZNAME_MAX,
[_SC_JOB_CONTROL] = 1,
[_SC_ASYNCHRONOUS_IO] = VER,
[_SC_PRIORITIZED_IO] = -1,
[_SC_SYNCHRONIZED_IO] = -1,
- [_SC_FSYNC] = -1,
+ [_SC_FSYNC] = VER,
[_SC_MAPPED_FILES] = VER,
[_SC_MEMLOCK] = VER,
[_SC_MEMLOCK_RANGE] = VER,
[_SC_MEMORY_PROTECTION] = VER,
- [_SC_MESSAGE_PASSING] = -1,
+ [_SC_MESSAGE_PASSING] = VER,
[_SC_SEMAPHORES] = VER,
- [_SC_SHARED_MEMORY_OBJECTS] = -1,
+ [_SC_SHARED_MEMORY_OBJECTS] = VER,
[_SC_AIO_LISTIO_MAX] = -1,
[_SC_AIO_MAX] = -1,
[_SC_AIO_PRIO_DELTA_MAX] = 0, /* ?? */
[_SC_DELAYTIMER_MAX] = _POSIX_DELAYTIMER_MAX,
[_SC_MQ_OPEN_MAX] = -1,
- [_SC_MQ_PRIO_MAX] = _POSIX_MQ_PRIO_MAX,
+ [_SC_MQ_PRIO_MAX] = OFLOW,
[_SC_VERSION] = VER,
- [_SC_PAGE_SIZE] = PAGE_SIZE,
- [_SC_RTSIG_MAX] = 63, /* ?? */
- [_SC_SEM_NSEMS_MAX] = _POSIX_SEM_NSEMS_MAX,
- [_SC_SEM_VALUE_MAX] = _POSIX_SEM_VALUE_MAX,
+ [_SC_PAGE_SIZE] = OFLOW,
+ [_SC_RTSIG_MAX] = _NSIG - 1 - 31 - 3,
+ [_SC_SEM_NSEMS_MAX] = SEM_NSEMS_MAX,
+ [_SC_SEM_VALUE_MAX] = OFLOW,
[_SC_SIGQUEUE_MAX] = -1,
[_SC_TIMER_MAX] = -1,
[_SC_BC_BASE_MAX] = _POSIX2_BC_BASE_MAX,
[_SC_GETPW_R_SIZE_MAX] = -1,
[_SC_LOGIN_NAME_MAX] = 256,
[_SC_TTY_NAME_MAX] = TTY_NAME_MAX,
- [_SC_THREAD_DESTRUCTOR_ITERATIONS] = _POSIX_THREAD_DESTRUCTOR_ITERATIONS,
- [_SC_THREAD_KEYS_MAX] = -1,
- [_SC_THREAD_STACK_MIN] = 2*PAGE_SIZE,
+ [_SC_THREAD_DESTRUCTOR_ITERATIONS] = PTHREAD_DESTRUCTOR_ITERATIONS,
+ [_SC_THREAD_KEYS_MAX] = PTHREAD_KEYS_MAX,
+ [_SC_THREAD_STACK_MIN] = PTHREAD_STACK_MIN,
[_SC_THREAD_THREADS_MAX] = -1,
- [_SC_THREAD_ATTR_STACKADDR] = -1,
+ [_SC_THREAD_ATTR_STACKADDR] = VER,
[_SC_THREAD_ATTR_STACKSIZE] = VER,
- [_SC_THREAD_PRIORITY_SCHEDULING] = -1,
+ [_SC_THREAD_PRIORITY_SCHEDULING] = VER,
[_SC_THREAD_PRIO_INHERIT] = -1,
[_SC_THREAD_PRIO_PROTECT] = -1,
[_SC_THREAD_PROCESS_SHARED] = VER,
- [_SC_NPROCESSORS_CONF] = -1,
- [_SC_NPROCESSORS_ONLN] = -1,
+ [_SC_NPROCESSORS_CONF] = CPUCNT,
+ [_SC_NPROCESSORS_ONLN] = CPUCNT,
[_SC_PHYS_PAGES] = -1,
[_SC_AVPHYS_PAGES] = -1,
[_SC_ATEXIT_MAX] = -1,
[_SC_PASS_MAX] = -1,
[_SC_XOPEN_VERSION] = _XOPEN_VERSION,
[_SC_XOPEN_XCU_VERSION] = _XOPEN_VERSION,
- [_SC_XOPEN_UNIX] = -1,
+ [_SC_XOPEN_UNIX] = 1,
[_SC_XOPEN_CRYPT] = -1,
[_SC_XOPEN_ENH_I18N] = 1,
[_SC_XOPEN_SHM] = 1,
[_SC_XBS5_ILP32_OFF32] = -1,
[_SC_XBS5_ILP32_OFFBIG] = 2*(sizeof(long)==4)-1,
[_SC_XBS5_LP64_OFF64] = 2*(sizeof(long)==8)-1,
- [_SC_XBS5_LPBIG_OFFBIG] = 2*(sizeof(long)>=8)-1,
+ [_SC_XBS5_LPBIG_OFFBIG] = -1,
[_SC_XOPEN_LEGACY] = -1,
[_SC_XOPEN_REALTIME] = -1,
[_SC_XOPEN_REALTIME_THREADS] = -1,
- [_SC_ADVISORY_INFO] = -1,
+ [_SC_ADVISORY_INFO] = VER,
[_SC_BARRIERS] = VER,
[_SC_BASE] = -1,
[_SC_C_LANG_SUPPORT] = -1,
[_SC_C_LANG_SUPPORT_R] = -1,
[_SC_CLOCK_SELECTION] = VER,
[_SC_CPUTIME] = VER,
- [_SC_THREAD_CPUTIME] = -1,
+ [_SC_THREAD_CPUTIME] = VER,
[_SC_DEVICE_IO] = -1,
[_SC_DEVICE_SPECIFIC] = -1,
[_SC_DEVICE_SPECIFIC_R] = -1,
[_SC_REGEX_VERSION] = -1,
[_SC_SHELL] = 1,
[_SC_SIGNALS] = -1,
- [_SC_SPAWN] = -1,
+ [_SC_SPAWN] = VER,
[_SC_SPORADIC_SERVER] = -1,
[_SC_THREAD_SPORADIC_SERVER] = -1,
[_SC_SYSTEM_DATABASE] = -1,
[_SC_V6_ILP32_OFF32] = -1,
[_SC_V6_ILP32_OFFBIG] = 2*(sizeof(long)==4)-1,
[_SC_V6_LP64_OFF64] = 2*(sizeof(long)==8)-1,
- [_SC_V6_LPBIG_OFFBIG] = 2*(sizeof(long)>=8)-1,
+ [_SC_V6_LPBIG_OFFBIG] = -1,
[_SC_HOST_NAME_MAX] = HOST_NAME_MAX,
[_SC_TRACE] = -1,
[_SC_TRACE_EVENT_FILTER] = -1,
[_SC_V7_ILP32_OFF32] = -1,
[_SC_V7_ILP32_OFFBIG] = 2*(sizeof(long)==4)-1,
[_SC_V7_LP64_OFF64] = 2*(sizeof(long)==8)-1,
- [_SC_V7_LPBIG_OFFBIG] = 2*(sizeof(long)>=8)-1,
+ [_SC_V7_LPBIG_OFFBIG] = -1,
[_SC_SS_REPL_MAX] = -1,
[_SC_TRACE_EVENT_NAME_MAX] = -1,
[_SC_TRACE_NAME_MAX] = -1,
} else if (values[name] == VER) {
return _POSIX_VERSION;
} else if (values[name] == OFLOW) {
- return ARG_MAX;
- } else {
- return values[name];
+ if (name == _SC_ARG_MAX) return ARG_MAX;
+ if (name == _SC_SEM_VALUE_MAX) return SEM_VALUE_MAX;
+ if (name == _SC_MQ_PRIO_MAX) return MQ_PRIO_MAX;
+ /* name == _SC_PAGE_SIZE */
+ return PAGE_SIZE;
+ } else if (values[name] == CPUCNT) {
+ unsigned char set[128] = {1};
+ int i, cnt;
+ __syscall(SYS_sched_getaffinity, 0, sizeof set, set);
+ for (i=cnt=0; i<sizeof set; i++)
+ for (; set[i]; set[i]&=set[i]-1, cnt++);
+ return cnt;
+ } else if (values[name] < OFLOW) {
+ long lim[2];
+ __syscall(SYS_getrlimit, values[name]&16383, lim);
+ return lim[0] < 0 ? LONG_MAX : lim[0];
}
+ return values[name];
}