diff options
Diffstat (limited to 'src/conf/sysconf.c')
| -rw-r--r-- | src/conf/sysconf.c | 222 |
1 files changed, 222 insertions, 0 deletions
diff --git a/src/conf/sysconf.c b/src/conf/sysconf.c new file mode 100644 index 00000000..cdaeb2a6 --- /dev/null +++ b/src/conf/sysconf.c @@ -0,0 +1,222 @@ +#include <unistd.h> +#include <limits.h> +#include <errno.h> + +#define VER (-2) +#define OFLOW (-3) + +long sysconf(int name) +{ + static const short values[] = { + [_SC_ARG_MAX] = OFLOW, + [_SC_CHILD_MAX] = -1, + [_SC_CLK_TCK] = 100, + [_SC_NGROUPS_MAX] = 32, + [_SC_OPEN_MAX] = 1024, + [_SC_STREAM_MAX] = -1, + [_SC_TZNAME_MAX] = TZNAME_MAX, + [_SC_JOB_CONTROL] = 1, + [_SC_SAVED_IDS] = 1, + [_SC_REALTIME_SIGNALS] = 1, + [_SC_PRIORITY_SCHEDULING] = -1, + [_SC_TIMERS] = VER, + [_SC_ASYNCHRONOUS_IO] = VER, + [_SC_PRIORITIZED_IO] = -1, + [_SC_SYNCHRONIZED_IO] = -1, + [_SC_FSYNC] = -1, + [_SC_MAPPED_FILES] = VER, + [_SC_MEMLOCK] = VER, + [_SC_MEMLOCK_RANGE] = VER, + [_SC_MEMORY_PROTECTION] = VER, + [_SC_MESSAGE_PASSING] = -1, + [_SC_SEMAPHORES] = VER, + [_SC_SHARED_MEMORY_OBJECTS] = -1, + [_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_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_SIGQUEUE_MAX] = -1, + [_SC_TIMER_MAX] = -1, + [_SC_BC_BASE_MAX] = _POSIX2_BC_BASE_MAX, + [_SC_BC_DIM_MAX] = _POSIX2_BC_DIM_MAX, + [_SC_BC_SCALE_MAX] = _POSIX2_BC_SCALE_MAX, + [_SC_BC_STRING_MAX] = _POSIX2_BC_STRING_MAX, + [_SC_COLL_WEIGHTS_MAX] = COLL_WEIGHTS_MAX, + [_SC_EQUIV_CLASS_MAX] = -1, /* ?? */ + [_SC_EXPR_NEST_MAX] = -1, + [_SC_LINE_MAX] = -1, + [_SC_RE_DUP_MAX] = RE_DUP_MAX, + [_SC_CHARCLASS_NAME_MAX] = -1, /* ?? */ + [_SC_2_VERSION] = VER, + [_SC_2_C_BIND] = VER, + [_SC_2_C_DEV] = -1, + [_SC_2_FORT_DEV] = -1, + [_SC_2_FORT_RUN] = -1, + [_SC_2_SW_DEV] = -1, + [_SC_2_LOCALEDEF] = -1, + [_SC_PII] = -1, /* ????????? */ + [_SC_PII_XTI] = -1, + [_SC_PII_SOCKET] = -1, + [_SC_PII_INTERNET] = -1, + [_SC_PII_OSI] = -1, + [_SC_POLL] = 1, + [_SC_SELECT] = 1, + [_SC_IOV_MAX] = IOV_MAX, + [_SC_PII_INTERNET_STREAM] = -1, + [_SC_PII_INTERNET_DGRAM] = -1, + [_SC_PII_OSI_COTS] = -1, + [_SC_PII_OSI_CLTS] = -1, + [_SC_PII_OSI_M] = -1, + [_SC_T_IOV_MAX] = -1, + [_SC_THREADS] = VER, + [_SC_THREAD_SAFE_FUNCTIONS] = VER, + [_SC_GETGR_R_SIZE_MAX] = -1, + [_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_THREADS_MAX] = -1, + [_SC_THREAD_ATTR_STACKADDR] = -1, + [_SC_THREAD_ATTR_STACKSIZE] = VER, + [_SC_THREAD_PRIORITY_SCHEDULING] = -1, + [_SC_THREAD_PRIO_INHERIT] = -1, + [_SC_THREAD_PRIO_PROTECT] = -1, + [_SC_THREAD_PROCESS_SHARED] = VER, + [_SC_NPROCESSORS_CONF] = -1, + [_SC_NPROCESSORS_ONLN] = -1, + [_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_CRYPT] = -1, + [_SC_XOPEN_ENH_I18N] = 1, + [_SC_XOPEN_SHM] = 1, + [_SC_2_CHAR_TERM] = -1, + [_SC_2_C_VERSION] = -1, + [_SC_2_UPE] = -1, + [_SC_XOPEN_XPG2] = -1, + [_SC_XOPEN_XPG3] = -1, + [_SC_XOPEN_XPG4] = -1, + [_SC_CHAR_BIT] = -1, + [_SC_CHAR_MAX] = -1, + [_SC_CHAR_MIN] = -1, + [_SC_INT_MAX] = -1, + [_SC_INT_MIN] = -1, + [_SC_LONG_BIT] = -1, + [_SC_WORD_BIT] = -1, + [_SC_MB_LEN_MAX] = -1, + [_SC_NZERO] = NZERO, + [_SC_SSIZE_MAX] = -1, + [_SC_SCHAR_MAX] = -1, + [_SC_SCHAR_MIN] = -1, + [_SC_SHRT_MAX] = -1, + [_SC_SHRT_MIN] = -1, + [_SC_UCHAR_MAX] = -1, + [_SC_UINT_MAX] = -1, + [_SC_ULONG_MAX] = -1, + [_SC_USHRT_MAX] = -1, + [_SC_NL_ARGMAX] = -1, + [_SC_NL_LANGMAX] = -1, + [_SC_NL_MSGMAX] = -1, + [_SC_NL_NMAX] = -1, + [_SC_NL_SETMAX] = -1, + [_SC_NL_TEXTMAX] = -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_XOPEN_LEGACY] = -1, + [_SC_XOPEN_REALTIME] = -1, + [_SC_XOPEN_REALTIME_THREADS] = -1, + [_SC_ADVISORY_INFO] = -1, + [_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_DEVICE_IO] = -1, + [_SC_DEVICE_SPECIFIC] = -1, + [_SC_DEVICE_SPECIFIC_R] = -1, + [_SC_FD_MGMT] = -1, + [_SC_FIFO] = -1, + [_SC_PIPE] = -1, + [_SC_FILE_ATTRIBUTES] = -1, + [_SC_FILE_LOCKING] = -1, + [_SC_FILE_SYSTEM] = -1, + [_SC_MONOTONIC_CLOCK] = VER, + [_SC_MULTI_PROCESS] = -1, + [_SC_SINGLE_PROCESS] = -1, + [_SC_NETWORKING] = -1, + [_SC_READER_WRITER_LOCKS] = VER, + [_SC_SPIN_LOCKS] = VER, + [_SC_REGEXP] = 1, + [_SC_REGEX_VERSION] = -1, + [_SC_SHELL] = 1, + [_SC_SIGNALS] = -1, + [_SC_SPAWN] = -1, + [_SC_SPORADIC_SERVER] = -1, + [_SC_THREAD_SPORADIC_SERVER] = -1, + [_SC_SYSTEM_DATABASE] = -1, + [_SC_SYSTEM_DATABASE_R] = -1, + [_SC_TIMEOUTS] = VER, + [_SC_TYPED_MEMORY_OBJECTS] = -1, + [_SC_USER_GROUPS] = -1, + [_SC_USER_GROUPS_R] = -1, + [_SC_2_PBS] = -1, + [_SC_2_PBS_ACCOUNTING] = -1, + [_SC_2_PBS_LOCATE] = -1, + [_SC_2_PBS_MESSAGE] = -1, + [_SC_2_PBS_TRACK] = -1, + [_SC_SYMLOOP_MAX] = SYMLOOP_MAX, + [_SC_STREAMS] = 0, + [_SC_2_PBS_CHECKPOINT] = -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_HOST_NAME_MAX] = HOST_NAME_MAX, + [_SC_TRACE] = -1, + [_SC_TRACE_EVENT_FILTER] = -1, + [_SC_TRACE_INHERIT] = -1, + [_SC_TRACE_LOG] = -1, + + [_SC_IPV6] = VER, + [_SC_RAW_SOCKETS] = VER, + [_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_SS_REPL_MAX] = -1, + [_SC_TRACE_EVENT_NAME_MAX] = -1, + [_SC_TRACE_NAME_MAX] = -1, + [_SC_TRACE_SYS_MAX] = -1, + [_SC_TRACE_USER_EVENT_MAX] = -1, + [_SC_XOPEN_STREAMS] = 0, + [_SC_THREAD_ROBUST_PRIO_INHERIT] = -1, + [_SC_THREAD_ROBUST_PRIO_PROTECT] = -1, + }; + if (name > sizeof(values)/sizeof(values[0])) { + errno = EINVAL; + return -1; + } else if (values[name] == VER) { + return _POSIX_VERSION; + } else if (values[name] == OFLOW) { + return ARG_MAX; + } else { + return values[name]; + } +} |