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320054e8 DG |
1 | #ifndef _LIMITS_H |
2 | #define _LIMITS_H | |
3 | ||
4 | #include <features.h> | |
5 | ||
6 | /* Most limits are system-specific */ | |
7 | ||
8 | #include <bits/limits.h> | |
9 | ||
10 | /* Support signed or unsigned plain-char */ | |
11 | ||
12 | #if '\xff' > 0 | |
13 | #define CHAR_MIN 0 | |
14 | #define CHAR_MAX 255 | |
15 | #else | |
16 | #define CHAR_MIN (-128) | |
17 | #define CHAR_MAX 127 | |
18 | #endif | |
19 | ||
20 | /* Some universal constants... */ | |
21 | ||
22 | #define CHAR_BIT 8 | |
23 | #define SCHAR_MIN (-128) | |
24 | #define SCHAR_MAX 127 | |
25 | #define UCHAR_MAX 255 | |
26 | #define SHRT_MIN (-1-0x7fff) | |
27 | #define SHRT_MAX 0x7fff | |
28 | #define USHRT_MAX 0xffff | |
29 | #define INT_MIN (-1-0x7fffffff) | |
30 | #define INT_MAX 0x7fffffff | |
31 | #define UINT_MAX 0xffffffffU | |
32 | #define LONG_MIN (-LONG_MAX-1) | |
33 | #define ULONG_MAX (2UL*LONG_MAX+1) | |
34 | #define LLONG_MIN (-LLONG_MAX-1) | |
35 | #define ULLONG_MAX (2ULL*LLONG_MAX+1) | |
36 | ||
37 | #define MB_LEN_MAX 4 | |
38 | ||
39 | #if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \ | |
40 | || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE) | |
41 | ||
42 | #define PIPE_BUF 4096 | |
43 | #define FILESIZEBITS 64 | |
44 | #define NAME_MAX 255 | |
45 | #define PATH_MAX 4096 | |
46 | #define NGROUPS_MAX 32 | |
47 | #define ARG_MAX 131072 | |
48 | #define IOV_MAX 1024 | |
49 | #define SYMLOOP_MAX 40 | |
50 | #define WORD_BIT 32 | |
51 | #define SSIZE_MAX LONG_MAX | |
52 | #define TZNAME_MAX 6 | |
53 | #define TTY_NAME_MAX 32 | |
54 | #define HOST_NAME_MAX 255 | |
55 | ||
56 | /* Implementation choices... */ | |
57 | ||
58 | #define PTHREAD_KEYS_MAX 128 | |
59 | #define PTHREAD_STACK_MIN 2048 | |
60 | #define PTHREAD_DESTRUCTOR_ITERATIONS 4 | |
61 | #define SEM_VALUE_MAX 0x7fffffff | |
62 | #define SEM_NSEMS_MAX 256 | |
63 | #define DELAYTIMER_MAX 0x7fffffff | |
e5f14be3 | 64 | #ifdef __wasilibc_unmodified_upstream /* WASI has no mq */ |
320054e8 DG |
65 | #define MQ_PRIO_MAX 32768 |
66 | #endif | |
67 | #define LOGIN_NAME_MAX 256 | |
68 | ||
69 | /* Arbitrary numbers... */ | |
70 | ||
71 | #define BC_BASE_MAX 99 | |
72 | #define BC_DIM_MAX 2048 | |
73 | #define BC_SCALE_MAX 99 | |
74 | #define BC_STRING_MAX 1000 | |
75 | #define CHARCLASS_NAME_MAX 14 | |
76 | #define COLL_WEIGHTS_MAX 2 | |
77 | #define EXPR_NEST_MAX 32 | |
78 | #define LINE_MAX 4096 | |
79 | #define RE_DUP_MAX 255 | |
80 | ||
81 | #define NL_ARGMAX 9 | |
82 | #define NL_MSGMAX 32767 | |
83 | #define NL_SETMAX 255 | |
84 | #define NL_TEXTMAX 2048 | |
85 | ||
86 | #endif | |
87 | ||
88 | #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE) || defined(_XOPEN_SOURCE) | |
89 | ||
90 | #ifdef PAGESIZE | |
91 | #define PAGE_SIZE PAGESIZE | |
92 | #endif | |
93 | #define NZERO 20 | |
94 | #define NL_LANGMAX 32 | |
95 | ||
96 | #endif | |
97 | ||
98 | #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE) \ | |
99 | || (defined(_XOPEN_SOURCE) && _XOPEN_SOURCE+0 < 700) | |
100 | ||
101 | #define NL_NMAX 16 | |
102 | ||
103 | #endif | |
104 | ||
105 | /* POSIX/SUS requirements follow. These numbers come directly | |
106 | * from SUS and have nothing to do with the host system. */ | |
107 | ||
108 | #define _POSIX_AIO_LISTIO_MAX 2 | |
109 | #define _POSIX_AIO_MAX 1 | |
110 | #define _POSIX_ARG_MAX 4096 | |
111 | #define _POSIX_CHILD_MAX 25 | |
112 | #define _POSIX_CLOCKRES_MIN 20000000 | |
113 | #define _POSIX_DELAYTIMER_MAX 32 | |
114 | #define _POSIX_HOST_NAME_MAX 255 | |
115 | #define _POSIX_LINK_MAX 8 | |
116 | #define _POSIX_LOGIN_NAME_MAX 9 | |
117 | #define _POSIX_MAX_CANON 255 | |
118 | #define _POSIX_MAX_INPUT 255 | |
e5f14be3 | 119 | #ifdef __wasilibc_unmodified_upstream /* WASI has no mq */ |
320054e8 DG |
120 | #define _POSIX_MQ_OPEN_MAX 8 |
121 | #define _POSIX_MQ_PRIO_MAX 32 | |
122 | #endif | |
123 | #define _POSIX_NAME_MAX 14 | |
124 | #define _POSIX_NGROUPS_MAX 8 | |
125 | #define _POSIX_OPEN_MAX 20 | |
126 | #define _POSIX_PATH_MAX 256 | |
127 | #define _POSIX_PIPE_BUF 512 | |
128 | #define _POSIX_RE_DUP_MAX 255 | |
129 | #define _POSIX_RTSIG_MAX 8 | |
130 | #define _POSIX_SEM_NSEMS_MAX 256 | |
131 | #define _POSIX_SEM_VALUE_MAX 32767 | |
132 | #define _POSIX_SIGQUEUE_MAX 32 | |
133 | #define _POSIX_SSIZE_MAX 32767 | |
134 | #define _POSIX_STREAM_MAX 8 | |
135 | #define _POSIX_SS_REPL_MAX 4 | |
136 | #define _POSIX_SYMLINK_MAX 255 | |
137 | #define _POSIX_SYMLOOP_MAX 8 | |
138 | #define _POSIX_THREAD_DESTRUCTOR_ITERATIONS 4 | |
139 | #define _POSIX_THREAD_KEYS_MAX 128 | |
140 | #define _POSIX_THREAD_THREADS_MAX 64 | |
141 | #define _POSIX_TIMER_MAX 32 | |
142 | #define _POSIX_TRACE_EVENT_NAME_MAX 30 | |
143 | #define _POSIX_TRACE_NAME_MAX 8 | |
144 | #define _POSIX_TRACE_SYS_MAX 8 | |
145 | #define _POSIX_TRACE_USER_EVENT_MAX 32 | |
146 | #define _POSIX_TTY_NAME_MAX 9 | |
147 | #define _POSIX_TZNAME_MAX 6 | |
148 | #define _POSIX2_BC_BASE_MAX 99 | |
149 | #define _POSIX2_BC_DIM_MAX 2048 | |
150 | #define _POSIX2_BC_SCALE_MAX 99 | |
151 | #define _POSIX2_BC_STRING_MAX 1000 | |
152 | #define _POSIX2_CHARCLASS_NAME_MAX 14 | |
153 | #define _POSIX2_COLL_WEIGHTS_MAX 2 | |
154 | #define _POSIX2_EXPR_NEST_MAX 32 | |
155 | #define _POSIX2_LINE_MAX 2048 | |
156 | #define _POSIX2_RE_DUP_MAX 255 | |
157 | ||
158 | #define _XOPEN_IOV_MAX 16 | |
159 | #define _XOPEN_NAME_MAX 255 | |
160 | #define _XOPEN_PATH_MAX 1024 | |
161 | ||
162 | #endif |