1 #pragma once 2 3 #include <features.h> 4 5 /* Most limits are system-specific */ 6 7 #include <bits/limits.h> 8 9 /* Support signed or unsigned plain-char */ 10 11 #if '\0' - 1 > 0 12 #define CHAR_MIN 0 13 #define CHAR_MAX 255 14 #else 15 #define CHAR_MIN (-128) 16 #define CHAR_MAX 127 17 #endif 18 19 /* Some universal constants... */ 20 21 #define CHAR_BIT 8 22 #define SCHAR_MIN (-128) 23 #define SCHAR_MAX 127 24 #define UCHAR_MAX 255 25 #define SHRT_MIN (-1 - 0x7fff) 26 #define SHRT_MAX 0x7fff 27 #define USHRT_MAX 0xffff 28 #define INT_MIN (-1 - 0x7fffffff) 29 #define INT_MAX 0x7fffffff 30 #define UINT_MAX 0xffffffffU 31 #define LONG_MIN (-LONG_MAX - 1) 32 #define ULONG_MAX (2UL * LONG_MAX + 1) 33 #define LLONG_MIN (-LLONG_MAX - 1) 34 #define ULLONG_MAX (2ULL * LLONG_MAX + 1) 35 36 #define MB_LEN_MAX 4 37 38 #if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \ 39 defined(_GNU_SOURCE) || defined(_BSD_SOURCE) 40 41 #define PIPE_BUF 4096 42 #ifdef PAGE_SIZE 43 #define PAGESIZE PAGE_SIZE 44 #endif 45 #define FILESIZEBITS 64 46 #define NAME_MAX 255 47 #define SYMLINK_MAX 255 48 #define PATH_MAX 4096 49 #define NZERO 20 50 #define NGROUPS_MAX 32 51 #define ARG_MAX 131072 52 #define IOV_MAX 1024 53 #define SYMLOOP_MAX 40 54 #define WORD_BIT 32 55 #define SSIZE_MAX LONG_MAX 56 #define TZNAME_MAX 6 57 #define TTY_NAME_MAX 32 58 #define HOST_NAME_MAX 255 59 60 /* Implementation choices... */ 61 62 #define PTHREAD_KEYS_MAX 128 63 #define PTHREAD_STACK_MIN 3072 64 #define PTHREAD_DESTRUCTOR_ITERATIONS 4 65 #define SEM_VALUE_MAX 0x7fffffff 66 #define SEM_NSEMS_MAX 256 67 #define DELAYTIMER_MAX 0x7fffffff 68 #define MQ_PRIO_MAX 32768 69 #define LOGIN_NAME_MAX 256 70 71 /* Arbitrary numbers... */ 72 73 #define BC_BASE_MAX 99 74 #define BC_DIM_MAX 2048 75 #define BC_SCALE_MAX 99 76 #define BC_STRING_MAX 1000 77 #define CHARCLASS_NAME_MAX 14 78 #define COLL_WEIGHTS_MAX 2 79 #define EXPR_NEST_MAX 32 80 #define LINE_MAX 4096 81 #define RE_DUP_MAX 255 82 83 #define NL_ARGMAX 9 84 #define NL_LANGMAX 32 85 #define NL_MSGMAX 32767 86 #define NL_SETMAX 255 87 #define NL_TEXTMAX 2048 88 89 #endif 90 91 #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE) || \ 92 (defined(_XOPEN_SOURCE) && _XOPEN_SOURCE + 0 < 700) 93 94 #define NL_NMAX 16 95 96 #endif 97 98 /* POSIX/SUS requirements follow. These numbers come directly 99 * from SUS and have nothing to do with the host system. */ 100 101 #define _POSIX_AIO_LISTIO_MAX 2 102 #define _POSIX_AIO_MAX 1 103 #define _POSIX_ARG_MAX 4096 104 #define _POSIX_CHILD_MAX 25 105 #define _POSIX_CLOCKRES_MIN 20000000 106 #define _POSIX_DELAYTIMER_MAX 32 107 #define _POSIX_HOST_NAME_MAX 255 108 #define _POSIX_LINK_MAX 8 109 #define _POSIX_LOGIN_NAME_MAX 9 110 #define _POSIX_MAX_CANON 255 111 #define _POSIX_MAX_INPUT 255 112 #define _POSIX_MQ_OPEN_MAX 8 113 #define _POSIX_MQ_PRIO_MAX 32 114 #define _POSIX_NAME_MAX 14 115 #define _POSIX_NGROUPS_MAX 8 116 #define _POSIX_OPEN_MAX 20 117 #define _POSIX_PATH_MAX 256 118 #define _POSIX_PIPE_BUF 512 119 #define _POSIX_RE_DUP_MAX 255 120 #define _POSIX_RTSIG_MAX 8 121 #define _POSIX_SEM_NSEMS_MAX 256 122 #define _POSIX_SEM_VALUE_MAX 32767 123 #define _POSIX_SIGQUEUE_MAX 32 124 #define _POSIX_SSIZE_MAX 32767 125 #define _POSIX_STREAM_MAX 8 126 #define _POSIX_SS_REPL_MAX 4 127 #define _POSIX_SYMLINK_MAX 255 128 #define _POSIX_SYMLOOP_MAX 8 129 #define _POSIX_THREAD_DESTRUCTOR_ITERATIONS 4 130 #define _POSIX_THREAD_KEYS_MAX 128 131 #define _POSIX_THREAD_THREADS_MAX 64 132 #define _POSIX_TIMER_MAX 32 133 #define _POSIX_TRACE_EVENT_NAME_MAX 30 134 #define _POSIX_TRACE_NAME_MAX 8 135 #define _POSIX_TRACE_SYS_MAX 8 136 #define _POSIX_TRACE_USER_EVENT_MAX 32 137 #define _POSIX_TTY_NAME_MAX 9 138 #define _POSIX_TZNAME_MAX 6 139 #define _POSIX2_BC_BASE_MAX 99 140 #define _POSIX2_BC_DIM_MAX 2048 141 #define _POSIX2_BC_SCALE_MAX 99 142 #define _POSIX2_BC_STRING_MAX 1000 143 #define _POSIX2_CHARCLASS_NAME_MAX 14 144 #define _POSIX2_COLL_WEIGHTS_MAX 2 145 #define _POSIX2_EXPR_NEST_MAX 32 146 #define _POSIX2_LINE_MAX 2048 147 #define _POSIX2_RE_DUP_MAX 255 148 149 #define _XOPEN_IOV_MAX 16 150 #define _XOPEN_NAME_MAX 255 151 #define _XOPEN_PATH_MAX 1024 152