auronandace
336 lines
11 KiB
Rust
336 lines
11 KiB
Rust
/// Linux sysconf implementation.
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/// Constants borrowed from musl.
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use core::{
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ffi::{c_int, c_long},
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mem::size_of,
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};
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use crate::{
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header::{errno, limits::*, signal, unistd::sysconf::constants::*},
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platform,
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};
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pub const _XOPEN_IOV_MAX: c_long = 16;
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pub const _XOPEN_NAME_MAX: c_long = 255;
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pub const _XOPEN_PATH_MAX: c_long = 1024;
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pub const _SC_JOB_CONTROL: c_int = 7;
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pub const _SC_SAVED_IDS: c_int = 8;
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pub const _SC_PRIORITY_SCHEDULING: c_int = 10;
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pub const _SC_ASYNCHRONOUS_IO: c_int = 12;
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pub const _SC_PRIORITIZED_IO: c_int = 13;
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pub const _SC_SYNCHRONIZED_IO: c_int = 14;
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pub const _SC_FSYNC: c_int = 15;
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pub const _SC_MAPPED_FILES: c_int = 16;
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pub const _SC_MEMLOCK: c_int = 17;
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pub const _SC_MEMLOCK_RANGE: c_int = 18;
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pub const _SC_MEMORY_PROTECTION: c_int = 19;
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pub const _SC_MESSAGE_PASSING: c_int = 20;
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pub const _SC_AIO_LISTIO_MAX: c_int = 23;
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pub const _SC_AIO_MAX: c_int = 24;
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pub const _SC_AIO_PRIO_DELTA_MAX: c_int = 25;
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pub const _SC_DELAYTIMER_MAX: c_int = 26;
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pub const _SC_MQ_OPEN_MAX: c_int = 27;
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pub const _SC_MQ_PRIO_MAX: c_int = 28;
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pub const _SC_RTSIG_MAX: c_int = 31;
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pub const _SC_SEM_NSEMS_MAX: c_int = 32;
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pub const _SC_SEM_VALUE_MAX: c_int = 33;
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pub const _SC_TIMER_MAX: c_int = 35;
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pub const _SC_BC_BASE_MAX: c_int = 36;
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pub const _SC_BC_DIM_MAX: c_int = 37;
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pub const _SC_BC_SCALE_MAX: c_int = 38;
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pub const _SC_BC_STRING_MAX: c_int = 39;
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pub const _SC_COLL_WEIGHTS_MAX: c_int = 40;
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pub const _SC_EXPR_NEST_MAX: c_int = 42;
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pub const _SC_LINE_MAX: c_int = 43;
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pub const _SC_2_VERSION: c_int = 46;
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pub const _SC_2_C_BIND: c_int = 47;
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pub const _SC_2_C_DEV: c_int = 48;
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pub const _SC_2_FORT_DEV: c_int = 49;
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pub const _SC_2_FORT_RUN: c_int = 50;
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pub const _SC_2_SW_DEV: c_int = 51;
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pub const _SC_2_LOCALEDEF: c_int = 52;
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pub const _SC_UIO_MAXIOV: c_int = 60;
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pub const _SC_IOV_MAX: c_int = 60;
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pub const _SC_THREAD_SAFE_FUNCTIONS: c_int = 68;
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pub const _SC_THREAD_DESTRUCTOR_ITERATIONS: c_int = 73;
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pub const _SC_THREAD_KEYS_MAX: c_int = 74;
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pub const _SC_THREAD_STACK_MIN: c_int = 75;
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pub const _SC_THREAD_THREADS_MAX: c_int = 76;
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pub const _SC_THREAD_PRIORITY_SCHEDULING: c_int = 79;
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pub const _SC_THREAD_PRIO_INHERIT: c_int = 80;
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pub const _SC_THREAD_PRIO_PROTECT: c_int = 81;
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pub const _SC_THREAD_PROCESS_SHARED: c_int = 82;
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pub const _SC_ATEXIT_MAX: c_int = 87;
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pub const _SC_PASS_MAX: c_int = 88;
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pub const _SC_XOPEN_VERSION: c_int = 89;
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pub const _SC_XOPEN_XCU_VERSION: c_int = 90;
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pub const _SC_XOPEN_UNIX: c_int = 91;
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pub const _SC_XOPEN_CRYPT: c_int = 92;
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pub const _SC_XOPEN_ENH_I18N: c_int = 93;
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pub const _SC_XOPEN_SHM: c_int = 94;
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pub const _SC_2_CHAR_TERM: c_int = 95;
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pub const _SC_2_UPE: c_int = 97;
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pub const _SC_XOPEN_XPG2: c_int = 98;
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pub const _SC_XOPEN_XPG3: c_int = 99;
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pub const _SC_XOPEN_XPG4: c_int = 100;
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pub const _SC_NZERO: c_int = 109;
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pub const _SC_XBS5_ILP32_OFF32: c_int = 125;
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pub const _SC_XBS5_ILP32_OFFBIG: c_int = 126;
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pub const _SC_XBS5_LP64_OFF64: c_int = 127;
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pub const _SC_XBS5_LPBIG_OFFBIG: c_int = 128;
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pub const _SC_XOPEN_LEGACY: c_int = 129;
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pub const _SC_XOPEN_REALTIME: c_int = 130;
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pub const _SC_XOPEN_REALTIME_THREADS: c_int = 131;
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pub const _SC_ADVISORY_INFO: c_int = 132;
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pub const _SC_CLOCK_SELECTION: c_int = 137;
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pub const _SC_CPUTIME: c_int = 138;
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pub const _SC_THREAD_CPUTIME: c_int = 139;
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pub const _SC_READER_WRITER_LOCKS: c_int = 153;
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pub const _SC_SPIN_LOCKS: c_int = 154;
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pub const _SC_REGEXP: c_int = 155;
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pub const _SC_SPAWN: c_int = 159;
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pub const _SC_SPORADIC_SERVER: c_int = 160;
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pub const _SC_THREAD_SPORADIC_SERVER: c_int = 161;
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pub const _SC_TYPED_MEMORY_OBJECTS: c_int = 165;
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pub const _SC_2_PBS: c_int = 168;
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pub const _SC_2_PBS_ACCOUNTING: c_int = 169;
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pub const _SC_2_PBS_LOCATE: c_int = 170;
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pub const _SC_2_PBS_MESSAGE: c_int = 171;
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pub const _SC_2_PBS_TRACK: c_int = 172;
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pub const _SC_STREAMS: c_int = 174;
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pub const _SC_2_PBS_CHECKPOINT: c_int = 175;
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pub const _SC_V6_ILP32_OFF32: c_int = 176;
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pub const _SC_V6_ILP32_OFFBIG: c_int = 177;
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pub const _SC_V6_LP64_OFF64: c_int = 178;
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pub const _SC_V6_LPBIG_OFFBIG: c_int = 179;
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pub const _SC_TRACE: c_int = 181;
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pub const _SC_TRACE_EVENT_FILTER: c_int = 182;
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pub const _SC_TRACE_INHERIT: c_int = 183;
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pub const _SC_TRACE_LOG: c_int = 184;
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pub const _SC_IPV6: c_int = 235;
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pub const _SC_RAW_SOCKETS: c_int = 236;
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pub const _SC_V7_ILP32_OFF32: c_int = 237;
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pub const _SC_V7_ILP32_OFFBIG: c_int = 238;
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pub const _SC_V7_LP64_OFF64: c_int = 239;
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pub const _SC_V7_LPBIG_OFFBIG: c_int = 240;
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pub const _SC_SS_REPL_MAX: c_int = 241;
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pub const _SC_TRACE_EVENT_NAME_MAX: c_int = 242;
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pub const _SC_TRACE_NAME_MAX: c_int = 243;
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pub const _SC_TRACE_SYS_MAX: c_int = 244;
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pub const _SC_TRACE_USER_EVENT_MAX: c_int = 245;
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pub const _SC_XOPEN_STREAMS: c_int = 246;
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pub const _SC_THREAD_ROBUST_PRIO_INHERIT: c_int = 247;
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pub const _SC_THREAD_ROBUST_PRIO_PROTECT: c_int = 248;
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pub const _SC_MINSIGSTKSZ: c_int = 249;
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pub const _SC_SIGSTKSZ: c_int = 250;
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// Defined in unistd.h but we defined it in C
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const _POSIX_VERSION: c_long = 200809;
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const _XOPEN_VERSION: c_long = 700;
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pub(super) fn sysconf_impl(name: c_int) -> c_long {
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// Values from musl which we can assume is correct.
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match name {
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_SC_CLK_TCK => 100,
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// TODO: getrlimit
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_SC_CHILD_MAX => -1,
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_SC_NGROUPS_MAX => NGROUPS_MAX as c_long,
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// TODO: getrlimit
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_SC_OPEN_MAX => -1,
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_SC_STREAM_MAX => -1,
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// TODO: limits.h
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_SC_TZNAME_MAX => -1,
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_SC_JOB_CONTROL => 1,
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_SC_SAVED_IDS => 1,
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_SC_REALTIME_SIGNALS => _POSIX_VERSION,
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_SC_PRIORITY_SCHEDULING => -1,
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_SC_TIMERS => _POSIX_VERSION,
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_SC_ASYNCHRONOUS_IO => _POSIX_VERSION,
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_SC_PRIORITIZED_IO => -1,
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_SC_SYNCHRONIZED_IO => -1,
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_SC_FSYNC => _POSIX_VERSION,
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_SC_MAPPED_FILES => _POSIX_VERSION,
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_SC_MEMLOCK => _POSIX_VERSION,
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_SC_MEMLOCK_RANGE => _POSIX_VERSION,
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_SC_MEMORY_PROTECTION => _POSIX_VERSION,
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_SC_MESSAGE_PASSING => _POSIX_VERSION,
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_SC_SEMAPHORES => _POSIX_VERSION,
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_SC_SHARED_MEMORY_OBJECTS => _POSIX_VERSION,
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_SC_AIO_LISTIO_MAX => -1,
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_SC_AIO_MAX => -1,
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_SC_AIO_PRIO_DELTA_MAX => 0,
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// TODO: limits.h?
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_SC_DELAYTIMER_MAX => -1,
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_SC_MQ_OPEN_MAX => -1,
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// TODO: limits.h?
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_SC_MQ_PRIO_MAX => -1,
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_SC_VERSION => _POSIX_VERSION,
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_SC_PAGE_SIZE => PAGE_SIZE.try_into().unwrap_or(-1),
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_SC_RTSIG_MAX => (signal::SIGRTMAX - signal::SIGRTMIN)
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.try_into()
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.unwrap_or(-1),
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// TODO: limits.h
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_SC_SEM_NSEMS_MAX => -1,
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// TODO: limits.h
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_SC_SEM_VALUE_MAX => -1,
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_SC_SIGQUEUE_MAX => -1,
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_SC_TIMER_MAX => -1,
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_SC_BC_BASE_MAX => BC_BASE_MAX,
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_SC_BC_DIM_MAX => BC_DIM_MAX,
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_SC_BC_SCALE_MAX => BC_SCALE_MAX,
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_SC_BC_STRING_MAX => BC_STRING_MAX,
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_SC_COLL_WEIGHTS_MAX => COLL_WEIGHTS_MAX,
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_SC_EXPR_NEST_MAX => EXPR_NEST_MAX,
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_SC_LINE_MAX => LINE_MAX,
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_SC_RE_DUP_MAX => RE_DUP_MAX,
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_SC_2_VERSION => _POSIX_VERSION,
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_SC_2_C_BIND => _POSIX_VERSION,
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_SC_2_C_DEV => -1,
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_SC_2_FORT_DEV => -1,
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_SC_2_FORT_RUN => -1,
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_SC_2_SW_DEV => -1,
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_SC_2_LOCALEDEF => -1,
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_SC_IOV_MAX => _XOPEN_IOV_MAX,
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_SC_THREADS => _POSIX_VERSION,
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_SC_THREAD_SAFE_FUNCTIONS => _POSIX_VERSION,
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_SC_GETGR_R_SIZE_MAX => -1,
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_SC_GETPW_R_SIZE_MAX => -1,
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_SC_LOGIN_NAME_MAX => 256,
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// TODO: limits.h
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_SC_TTY_NAME_MAX => -1,
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// TODO: limits.h
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_SC_THREAD_DESTRUCTOR_ITERATIONS => -1,
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// TODO: limits.h
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_SC_THREAD_KEYS_MAX => -1,
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// TODO: limits.h
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_SC_THREAD_STACK_MIN => -1,
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_SC_THREAD_THREADS_MAX => -1,
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_SC_THREAD_ATTR_STACKADDR => _POSIX_VERSION,
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_SC_THREAD_ATTR_STACKSIZE => _POSIX_VERSION,
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_SC_THREAD_PRIORITY_SCHEDULING => _POSIX_VERSION,
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_SC_THREAD_PRIO_INHERIT => -1,
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_SC_THREAD_PRIO_PROTECT => -1,
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_SC_THREAD_PROCESS_SHARED => _POSIX_VERSION,
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// TODO: Use getaffinity syscall on Linux
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_SC_NPROCESSORS_CONF => -1,
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_SC_NPROCESSORS_ONLN => -1,
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// TODO: sysinfo
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_SC_PHYS_PAGES => -1,
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_SC_AVPHYS_PAGES => -1,
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_SC_ATEXIT_MAX => -1,
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_SC_PASS_MAX => -1,
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_SC_XOPEN_VERSION => _XOPEN_VERSION,
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_SC_XOPEN_XCU_VERSION => _XOPEN_VERSION,
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_SC_XOPEN_UNIX => 1,
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_SC_XOPEN_CRYPT => -1,
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_SC_XOPEN_ENH_I18N => 1,
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_SC_XOPEN_SHM => 1,
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_SC_2_CHAR_TERM => -1,
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_SC_2_UPE => -1,
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_SC_XOPEN_XPG2 => -1,
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_SC_XOPEN_XPG3 => -1,
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_SC_XOPEN_XPG4 => -1,
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// TODO: ?
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_SC_NZERO => -1,
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_SC_XBS5_ILP32_OFF32 => -1,
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_SC_XBS5_ILP32_OFFBIG => {
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if size_of::<c_long>() == 4 {
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1
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} else {
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-1
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}
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}
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_SC_XBS5_LP64_OFF64 => {
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if size_of::<c_long>() == 8 {
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1
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} else {
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-1
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}
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}
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_SC_XBS5_LPBIG_OFFBIG => -1,
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_SC_XOPEN_LEGACY => -1,
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_SC_XOPEN_REALTIME => -1,
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_SC_XOPEN_REALTIME_THREADS => -1,
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_SC_ADVISORY_INFO => _POSIX_VERSION,
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_SC_BARRIERS => _POSIX_VERSION,
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_SC_CLOCK_SELECTION => _POSIX_VERSION,
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_SC_CPUTIME => _POSIX_VERSION,
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_SC_THREAD_CPUTIME => _POSIX_VERSION,
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_SC_MONOTONIC_CLOCK => _POSIX_VERSION,
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_SC_READER_WRITER_LOCKS => _POSIX_VERSION,
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_SC_SPIN_LOCKS => _POSIX_VERSION,
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_SC_REGEXP => 1,
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_SC_SHELL => 1,
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_SC_SPAWN => _POSIX_VERSION,
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_SC_SPORADIC_SERVER => -1,
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_SC_THREAD_SPORADIC_SERVER => -1,
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_SC_TIMEOUTS => _POSIX_VERSION,
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_SC_TYPED_MEMORY_OBJECTS => -1,
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_SC_2_PBS => -1,
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_SC_2_PBS_ACCOUNTING => -1,
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_SC_2_PBS_LOCATE => -1,
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_SC_2_PBS_MESSAGE => -1,
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_SC_2_PBS_TRACK => -1,
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// TODO: SYMLOOP_MAX in paths.h
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_SC_SYMLOOP_MAX => -1,
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_SC_STREAMS => 0,
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_SC_2_PBS_CHECKPOINT => -1,
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_SC_V6_ILP32_OFF32 => -1,
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_SC_V6_ILP32_OFFBIG => {
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if size_of::<c_long>() == 4 {
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1
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} else {
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-1
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}
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}
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_SC_V6_LP64_OFF64 => {
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if size_of::<c_long>() == 8 {
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1
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} else {
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-1
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}
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}
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_SC_V6_LPBIG_OFFBIG => -1,
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_SC_HOST_NAME_MAX => HOST_NAME_MAX,
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_SC_TRACE => -1,
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_SC_TRACE_EVENT_FILTER => -1,
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_SC_TRACE_INHERIT => -1,
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_SC_TRACE_LOG => -1,
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_SC_IPV6 => _POSIX_VERSION,
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_SC_RAW_SOCKETS => _POSIX_VERSION,
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_SC_V7_ILP32_OFF32 => -1,
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_SC_V7_ILP32_OFFBIG => {
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if size_of::<c_long>() == 4 {
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1
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} else {
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-1
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}
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}
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_SC_V7_LP64_OFF64 => {
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if size_of::<c_long>() == 8 {
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1
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} else {
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-1
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}
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}
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_SC_V7_LPBIG_OFFBIG => -1,
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_SC_SS_REPL_MAX => -1,
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_SC_TRACE_EVENT_NAME_MAX => -1,
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_SC_TRACE_NAME_MAX => -1,
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_SC_TRACE_SYS_MAX => -1,
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_SC_TRACE_USER_EVENT_MAX => -1,
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_SC_XOPEN_STREAMS => 0,
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_SC_THREAD_ROBUST_PRIO_INHERIT => -1,
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_SC_THREAD_ROBUST_PRIO_PROTECT => -1,
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// TODO: Working getauxval
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_SC_MINSIGSTKSZ => -1,
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_SC_SIGSTKSZ => -1,
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_ => {
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platform::ERRNO.set(errno::EINVAL);
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-1
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}
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}
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}
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