Add more limits and expose them through sysconf
This commit is contained in:
Jeremy Soller
+54
-40
@@ -1,6 +1,8 @@
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//! limits.h implementation for relibc
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//! Following https://pubs.opengroup.org/onlinepubs/7908799/xsh/limits.h.html
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use core::ffi::c_long;
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pub const HOST_NAME_MAX: usize = 64;
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pub const NAME_MAX: usize = 255;
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pub const PASS_MAX: usize = 128;
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@@ -13,44 +15,56 @@ pub const NGROUPS_MAX: usize = 65536;
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pub const PAGE_SIZE: usize = 4096;
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// These POSIX symbols must have these values regardless of OS
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pub const _POSIX_AIO_LISTIO_MAX: usize = 2;
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pub const _POSIX_AIO_MAX: usize = 1;
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pub const _POSIX_ARG_MAX: usize = 4096;
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pub const _POSIX_CHILD_MAX: usize = 25;
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pub const _POSIX_CLOCKRES_MIN: usize = 20000000;
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pub const _POSIX_DELAYTIMER_MAX: usize = 32;
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pub const _POSIX_HOST_NAME_MAX: usize = 255;
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pub const _POSIX_LINK_MAX: usize = 8;
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pub const _POSIX_LOGIN_NAME_MAX: usize = 9;
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pub const _POSIX_MAX_CANON: usize = 255;
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pub const _POSIX_MAX_INPUT: usize = 255;
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pub const _POSIX_NAME_MAX: usize = 14;
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pub const _POSIX_NGROUPS_MAX: usize = 8;
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pub const _POSIX_OPEN_MAX: usize = 20;
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pub const _POSIX_PATH_MAX: usize = 256;
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pub const _POSIX_PIPE_BUF: usize = 512;
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pub const _POSIX_RE_DUP_MAX: usize = 255;
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pub const _POSIX_RTSIG_MAX: usize = 8;
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pub const _POSIX_SEM_NSEMS_MAX: usize = 256;
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pub const _POSIX_SEM_VALUE_MAX: usize = 32767;
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pub const _POSIX_SIGQUEUE_MAX: usize = 32;
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pub const _POSIX_SSIZE_MAX: usize = 32767;
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pub const _POSIX_STREAM_MAX: usize = 8;
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pub const _POSIX_SYMLINK_MAX: usize = 255;
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pub const _POSIX_SYMLOOP_MAX: usize = 8;
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pub const _POSIX_THREAD_DESTRUCTOR_ITERATIONS: usize = 4;
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pub const _POSIX_THREAD_KEYS_MAX: usize = 128;
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pub const _POSIX_THREAD_THREADS_MAX: usize = 64;
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pub const _POSIX_TIMER_MAX: usize = 32;
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pub const _POSIX_TTY_NAME_MAX: usize = 9;
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pub const _POSIX_TZNAME_MAX: usize = 6;
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pub const _POSIX_AIO_LISTIO_MAX: c_long = 2;
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pub const _POSIX_AIO_MAX: c_long = 1;
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pub const _POSIX_ARG_MAX: c_long = 4096;
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pub const _POSIX_CHILD_MAX: c_long = 25;
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pub const _POSIX_CLOCKRES_MIN: c_long = 20000000;
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pub const _POSIX_DELAYTIMER_MAX: c_long = 32;
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pub const _POSIX_HOST_NAME_MAX: c_long = 255;
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pub const _POSIX_LINK_MAX: c_long = 8;
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pub const _POSIX_LOGIN_NAME_MAX: c_long = 9;
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pub const _POSIX_MAX_CANON: c_long = 255;
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pub const _POSIX_MAX_INPUT: c_long = 255;
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pub const _POSIX_NAME_MAX: c_long = 14;
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pub const _POSIX_NGROUPS_MAX: c_long = 8;
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pub const _POSIX_OPEN_MAX: c_long = 20;
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pub const _POSIX_PATH_MAX: c_long = 256;
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pub const _POSIX_PIPE_BUF: c_long = 512;
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pub const _POSIX_RE_DUP_MAX: c_long = 255;
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pub const _POSIX_RTSIG_MAX: c_long = 8;
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pub const _POSIX_SEM_NSEMS_MAX: c_long = 256;
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pub const _POSIX_SEM_VALUE_MAX: c_long = 32767;
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pub const _POSIX_SIGQUEUE_MAX: c_long = 32;
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pub const _POSIX_SSIZE_MAX: c_long = 32767;
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pub const _POSIX_STREAM_MAX: c_long = 8;
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pub const _POSIX_SYMLINK_MAX: c_long = 255;
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pub const _POSIX_SYMLOOP_MAX: c_long = 8;
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pub const _POSIX_THREAD_DESTRUCTOR_ITERATIONS: c_long = 4;
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pub const _POSIX_THREAD_KEYS_MAX: c_long = 128;
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pub const _POSIX_THREAD_THREADS_MAX: c_long = 64;
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pub const _POSIX_TIMER_MAX: c_long = 32;
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pub const _POSIX_TTY_NAME_MAX: c_long = 9;
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pub const _POSIX_TZNAME_MAX: c_long = 6;
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pub const _POSIX2_BC_BASE_MAX: usize = 99;
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pub const _POSIX2_BC_DIM_MAX: usize = 2048;
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pub const _POSIX2_BC_SCALE_MAX: usize = 99;
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pub const _POSIX2_BC_STRING_MAX: usize = 1000;
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pub const _POSIX2_CHARCLASS_NAME_MAX: usize = 14;
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pub const _POSIX2_COLL_WEIGHTS_MAX: usize = 2;
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pub const _POSIX2_EXPR_NEST_MAX: usize = 32;
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pub const _POSIX2_LINE_MAX: usize = 2048;
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pub const _POSIX2_RE_DUP_MAX: usize = 255;
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pub const _POSIX2_BC_BASE_MAX: c_long = 99;
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pub const _POSIX2_BC_DIM_MAX: c_long = 2048;
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pub const _POSIX2_BC_SCALE_MAX: c_long = 99;
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pub const _POSIX2_BC_STRING_MAX: c_long = 1000;
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pub const _POSIX2_CHARCLASS_NAME_MAX: c_long = 14;
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pub const _POSIX2_COLL_WEIGHTS_MAX: c_long = 2;
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pub const _POSIX2_EXPR_NEST_MAX: c_long = 32;
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pub const _POSIX2_LINE_MAX: c_long = 2048;
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pub const _POSIX2_RE_DUP_MAX: c_long = 255;
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// These symbols must be at least the POSIX values, and sysconf will return the actual value between
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// the posix minimum and this maximum.
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pub const BC_BASE_MAX: c_long = _POSIX2_BC_BASE_MAX;
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pub const BC_DIM_MAX: c_long = _POSIX2_BC_DIM_MAX;
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pub const BC_SCALE_MAX: c_long = _POSIX2_BC_SCALE_MAX;
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pub const BC_STRING_MAX: c_long = _POSIX2_BC_STRING_MAX;
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pub const CHARCLASS_NAME_MAX: c_long = _POSIX2_CHARCLASS_NAME_MAX;
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pub const COLL_WEIGHTS_MAX: c_long = _POSIX2_COLL_WEIGHTS_MAX;
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pub const EXPR_NEST_MAX: c_long = _POSIX2_EXPR_NEST_MAX;
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pub const LINE_MAX: c_long = _POSIX2_LINE_MAX;
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pub const RE_DUP_MAX: c_long = _POSIX2_RE_DUP_MAX;
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@@ -8,21 +8,12 @@ use core::{
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use crate::{
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header::{
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errno,
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limits::{HOST_NAME_MAX, PAGE_SIZE},
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limits::*,
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signal,
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},
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platform,
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};
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pub const _POSIX2_BC_BASE_MAX: c_long = 99;
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pub const _POSIX2_BC_DIM_MAX: c_long = 2048;
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pub const _POSIX2_BC_SCALE_MAX: c_long = 99;
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pub const _POSIX2_BC_STRING_MAX: c_long = 1000;
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pub const _POSIX2_CHARCLASS_NAME_MAX: c_long = 14;
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pub const _POSIX2_COLL_WEIGHTS_MAX: c_long = 2;
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pub const _POSIX2_EXPR_NEST_MAX: c_long = 32;
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pub const _POSIX2_LINE_MAX: c_long = 2048;
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pub const _POSIX2_RE_DUP_MAX: c_long = 255;
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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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@@ -182,7 +173,7 @@ pub(super) fn sysconf_impl(name: c_int) -> c_long {
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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 => 32,
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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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@@ -223,14 +214,14 @@ pub(super) fn sysconf_impl(name: c_int) -> c_long {
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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 => _POSIX2_BC_BASE_MAX,
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_SC_BC_DIM_MAX => _POSIX2_BC_DIM_MAX,
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_SC_BC_SCALE_MAX => _POSIX2_BC_SCALE_MAX,
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_SC_BC_STRING_MAX => _POSIX2_BC_STRING_MAX,
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_SC_COLL_WEIGHTS_MAX => _POSIX2_COLL_WEIGHTS_MAX,
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_SC_EXPR_NEST_MAX => -1,
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_SC_LINE_MAX => -1,
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_SC_RE_DUP_MAX => _POSIX2_RE_DUP_MAX,
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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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