]>
Commit | Line | Data |
---|---|---|
320054e8 DG |
1 | #include <unistd.h> |
2 | #include <limits.h> | |
3 | #include <errno.h> | |
b9b64a69 | 4 | #ifdef __wasilibc_unmodified_upstream // WASI has no process-level accounting |
320054e8 | 5 | #include <sys/resource.h> |
b9b64a69 | 6 | #endif |
d1cd4f48 | 7 | #ifdef __wasilibc_unmodified_upstream // WASI has no realtime signals |
320054e8 | 8 | #include <signal.h> |
d1cd4f48 | 9 | #endif |
320054e8 | 10 | #include <sys/sysinfo.h> |
322bd4ff | 11 | #ifdef __wasilibc_unmodified_upstream |
320054e8 | 12 | #include "syscall.h" |
322bd4ff | 13 | #endif |
320054e8 DG |
14 | #include "libc.h" |
15 | ||
16 | #define JT(x) (-256|(x)) | |
17 | #define VER JT(1) | |
18 | #define JT_ARG_MAX JT(2) | |
e5f14be3 | 19 | #ifdef __wasilibc_unmodified_upstream // WASI has no mq |
320054e8 DG |
20 | #define JT_MQ_PRIO_MAX JT(3) |
21 | #endif | |
22 | #define JT_PAGE_SIZE JT(4) | |
9f0d8e85 | 23 | #ifdef __wasilibc_unmodified_upstream // WASI has no semaphores |
320054e8 | 24 | #define JT_SEM_VALUE_MAX JT(5) |
9f0d8e85 | 25 | #endif |
320054e8 DG |
26 | #define JT_NPROCESSORS_CONF JT(6) |
27 | #define JT_NPROCESSORS_ONLN JT(7) | |
28 | #define JT_PHYS_PAGES JT(8) | |
29 | #define JT_AVPHYS_PAGES JT(9) | |
30 | #define JT_ZERO JT(10) | |
31 | #define JT_DELAYTIMER_MAX JT(11) | |
32 | ||
33 | #define RLIM(x) (-32768|(RLIMIT_ ## x)) | |
34 | ||
35 | long sysconf(int name) | |
36 | { | |
37 | static const short values[] = { | |
38 | [_SC_ARG_MAX] = JT_ARG_MAX, | |
e5f14be3 | 39 | #ifdef __wasilibc_unmodified_upstream // WASI has no processes |
320054e8 DG |
40 | [_SC_CHILD_MAX] = RLIM(NPROC), |
41 | #else | |
ec9f1c39 | 42 | // Not supported on wasi. |
320054e8 DG |
43 | [_SC_CHILD_MAX] = -1, |
44 | #endif | |
45 | [_SC_CLK_TCK] = 100, | |
46 | [_SC_NGROUPS_MAX] = 32, | |
e5f14be3 | 47 | #ifdef __wasilibc_unmodified_upstream // WASI has no rlimit |
320054e8 DG |
48 | [_SC_OPEN_MAX] = RLIM(NOFILE), |
49 | #else | |
e5f14be3 | 50 | // Rlimit is not supported on wasi. |
320054e8 DG |
51 | [_SC_OPEN_MAX] = -1, |
52 | #endif | |
e5f14be3 | 53 | |
320054e8 DG |
54 | [_SC_STREAM_MAX] = -1, |
55 | [_SC_TZNAME_MAX] = TZNAME_MAX, | |
56 | [_SC_JOB_CONTROL] = 1, | |
57 | [_SC_SAVED_IDS] = 1, | |
58 | [_SC_REALTIME_SIGNALS] = VER, | |
59 | [_SC_PRIORITY_SCHEDULING] = -1, | |
60 | [_SC_TIMERS] = VER, | |
61 | [_SC_ASYNCHRONOUS_IO] = VER, | |
62 | [_SC_PRIORITIZED_IO] = -1, | |
63 | [_SC_SYNCHRONIZED_IO] = -1, | |
64 | [_SC_FSYNC] = VER, | |
65 | [_SC_MAPPED_FILES] = VER, | |
66 | [_SC_MEMLOCK] = VER, | |
67 | [_SC_MEMLOCK_RANGE] = VER, | |
68 | [_SC_MEMORY_PROTECTION] = VER, | |
69 | [_SC_MESSAGE_PASSING] = VER, | |
70 | [_SC_SEMAPHORES] = VER, | |
71 | [_SC_SHARED_MEMORY_OBJECTS] = VER, | |
72 | [_SC_AIO_LISTIO_MAX] = -1, | |
73 | [_SC_AIO_MAX] = -1, | |
74 | [_SC_AIO_PRIO_DELTA_MAX] = JT_ZERO, /* ?? */ | |
75 | [_SC_DELAYTIMER_MAX] = JT_DELAYTIMER_MAX, | |
e5f14be3 | 76 | #ifdef __wasilibc_unmodified_upstream // WASI has no mq |
320054e8 DG |
77 | [_SC_MQ_OPEN_MAX] = -1, |
78 | [_SC_MQ_PRIO_MAX] = JT_MQ_PRIO_MAX, | |
79 | #endif | |
80 | [_SC_VERSION] = VER, | |
81 | [_SC_PAGE_SIZE] = JT_PAGE_SIZE, | |
e5f14be3 | 82 | #ifdef __wasilibc_unmodified_upstream // WASI has no realtime signals |
320054e8 DG |
83 | [_SC_RTSIG_MAX] = _NSIG - 1 - 31 - 3, |
84 | #else | |
ec9f1c39 | 85 | // Not supported on wasi. |
320054e8 DG |
86 | [_SC_RTSIG_MAX] = -1, |
87 | #endif | |
9f0d8e85 | 88 | #ifdef __wasilibc_unmodified_upstream // WASI has no semaphores |
320054e8 DG |
89 | [_SC_SEM_NSEMS_MAX] = SEM_NSEMS_MAX, |
90 | [_SC_SEM_VALUE_MAX] = JT_SEM_VALUE_MAX, | |
9f0d8e85 DG |
91 | #else |
92 | [_SC_SEM_NSEMS_MAX] = -1, | |
93 | [_SC_SEM_VALUE_MAX] = -1, | |
94 | #endif | |
320054e8 DG |
95 | [_SC_SIGQUEUE_MAX] = -1, |
96 | [_SC_TIMER_MAX] = -1, | |
9f0d8e85 | 97 | #ifdef __wasilibc_unmodified_upstream // WASI has no shell commands |
320054e8 DG |
98 | [_SC_BC_BASE_MAX] = _POSIX2_BC_BASE_MAX, |
99 | [_SC_BC_DIM_MAX] = _POSIX2_BC_DIM_MAX, | |
100 | [_SC_BC_SCALE_MAX] = _POSIX2_BC_SCALE_MAX, | |
101 | [_SC_BC_STRING_MAX] = _POSIX2_BC_STRING_MAX, | |
9f0d8e85 DG |
102 | #else |
103 | [_SC_BC_BASE_MAX] = -1, | |
104 | [_SC_BC_DIM_MAX] = -1, | |
105 | [_SC_BC_SCALE_MAX] = -1, | |
106 | [_SC_BC_STRING_MAX] = -1, | |
107 | #endif | |
320054e8 DG |
108 | [_SC_COLL_WEIGHTS_MAX] = COLL_WEIGHTS_MAX, |
109 | [_SC_EXPR_NEST_MAX] = -1, | |
110 | [_SC_LINE_MAX] = -1, | |
111 | [_SC_RE_DUP_MAX] = RE_DUP_MAX, | |
112 | [_SC_2_VERSION] = VER, | |
113 | [_SC_2_C_BIND] = VER, | |
114 | [_SC_2_C_DEV] = -1, | |
115 | [_SC_2_FORT_DEV] = -1, | |
116 | [_SC_2_FORT_RUN] = -1, | |
117 | [_SC_2_SW_DEV] = -1, | |
118 | [_SC_2_LOCALEDEF] = -1, | |
119 | [_SC_IOV_MAX] = IOV_MAX, | |
120 | [_SC_THREADS] = VER, | |
121 | [_SC_THREAD_SAFE_FUNCTIONS] = VER, | |
122 | [_SC_GETGR_R_SIZE_MAX] = -1, | |
123 | [_SC_GETPW_R_SIZE_MAX] = -1, | |
124 | [_SC_LOGIN_NAME_MAX] = 256, | |
125 | [_SC_TTY_NAME_MAX] = TTY_NAME_MAX, | |
9f0d8e85 | 126 | #if defined(__wasilibc_unmodified_upstream) || defined(_REENTRANT) |
320054e8 DG |
127 | [_SC_THREAD_DESTRUCTOR_ITERATIONS] = PTHREAD_DESTRUCTOR_ITERATIONS, |
128 | [_SC_THREAD_KEYS_MAX] = PTHREAD_KEYS_MAX, | |
129 | [_SC_THREAD_STACK_MIN] = PTHREAD_STACK_MIN, | |
9f0d8e85 DG |
130 | #else |
131 | [_SC_THREAD_DESTRUCTOR_ITERATIONS] = -1, | |
132 | [_SC_THREAD_KEYS_MAX] = -1, | |
133 | [_SC_THREAD_STACK_MIN] = -1, | |
134 | #endif | |
320054e8 DG |
135 | [_SC_THREAD_THREADS_MAX] = -1, |
136 | [_SC_THREAD_ATTR_STACKADDR] = VER, | |
137 | [_SC_THREAD_ATTR_STACKSIZE] = VER, | |
138 | [_SC_THREAD_PRIORITY_SCHEDULING] = VER, | |
139 | [_SC_THREAD_PRIO_INHERIT] = -1, | |
140 | [_SC_THREAD_PRIO_PROTECT] = -1, | |
141 | [_SC_THREAD_PROCESS_SHARED] = VER, | |
142 | [_SC_NPROCESSORS_CONF] = JT_NPROCESSORS_CONF, | |
143 | [_SC_NPROCESSORS_ONLN] = JT_NPROCESSORS_ONLN, | |
144 | [_SC_PHYS_PAGES] = JT_PHYS_PAGES, | |
145 | [_SC_AVPHYS_PAGES] = JT_AVPHYS_PAGES, | |
146 | [_SC_ATEXIT_MAX] = -1, | |
147 | [_SC_PASS_MAX] = -1, | |
148 | [_SC_XOPEN_VERSION] = _XOPEN_VERSION, | |
149 | [_SC_XOPEN_XCU_VERSION] = _XOPEN_VERSION, | |
150 | [_SC_XOPEN_UNIX] = 1, | |
151 | [_SC_XOPEN_CRYPT] = -1, | |
152 | [_SC_XOPEN_ENH_I18N] = 1, | |
153 | [_SC_XOPEN_SHM] = 1, | |
154 | [_SC_2_CHAR_TERM] = -1, | |
155 | [_SC_2_UPE] = -1, | |
156 | [_SC_XOPEN_XPG2] = -1, | |
157 | [_SC_XOPEN_XPG3] = -1, | |
158 | [_SC_XOPEN_XPG4] = -1, | |
159 | [_SC_NZERO] = NZERO, | |
160 | [_SC_XBS5_ILP32_OFF32] = -1, | |
161 | [_SC_XBS5_ILP32_OFFBIG] = sizeof(long)==4 ? 1 : -1, | |
162 | [_SC_XBS5_LP64_OFF64] = sizeof(long)==8 ? 1 : -1, | |
163 | [_SC_XBS5_LPBIG_OFFBIG] = -1, | |
164 | [_SC_XOPEN_LEGACY] = -1, | |
165 | [_SC_XOPEN_REALTIME] = -1, | |
166 | [_SC_XOPEN_REALTIME_THREADS] = -1, | |
167 | [_SC_ADVISORY_INFO] = VER, | |
168 | [_SC_BARRIERS] = VER, | |
169 | [_SC_CLOCK_SELECTION] = VER, | |
170 | [_SC_CPUTIME] = VER, | |
171 | [_SC_THREAD_CPUTIME] = VER, | |
172 | [_SC_MONOTONIC_CLOCK] = VER, | |
173 | [_SC_READER_WRITER_LOCKS] = VER, | |
174 | [_SC_SPIN_LOCKS] = VER, | |
175 | [_SC_REGEXP] = 1, | |
176 | [_SC_SHELL] = 1, | |
177 | [_SC_SPAWN] = VER, | |
178 | [_SC_SPORADIC_SERVER] = -1, | |
179 | [_SC_THREAD_SPORADIC_SERVER] = -1, | |
180 | [_SC_TIMEOUTS] = VER, | |
181 | [_SC_TYPED_MEMORY_OBJECTS] = -1, | |
182 | [_SC_2_PBS] = -1, | |
183 | [_SC_2_PBS_ACCOUNTING] = -1, | |
184 | [_SC_2_PBS_LOCATE] = -1, | |
185 | [_SC_2_PBS_MESSAGE] = -1, | |
186 | [_SC_2_PBS_TRACK] = -1, | |
187 | [_SC_SYMLOOP_MAX] = SYMLOOP_MAX, | |
188 | [_SC_STREAMS] = JT_ZERO, | |
189 | [_SC_2_PBS_CHECKPOINT] = -1, | |
190 | [_SC_V6_ILP32_OFF32] = -1, | |
191 | [_SC_V6_ILP32_OFFBIG] = sizeof(long)==4 ? 1 : -1, | |
192 | [_SC_V6_LP64_OFF64] = sizeof(long)==8 ? 1 : -1, | |
193 | [_SC_V6_LPBIG_OFFBIG] = -1, | |
194 | [_SC_HOST_NAME_MAX] = HOST_NAME_MAX, | |
195 | [_SC_TRACE] = -1, | |
196 | [_SC_TRACE_EVENT_FILTER] = -1, | |
197 | [_SC_TRACE_INHERIT] = -1, | |
198 | [_SC_TRACE_LOG] = -1, | |
199 | ||
200 | [_SC_IPV6] = VER, | |
201 | [_SC_RAW_SOCKETS] = VER, | |
202 | [_SC_V7_ILP32_OFF32] = -1, | |
203 | [_SC_V7_ILP32_OFFBIG] = sizeof(long)==4 ? 1 : -1, | |
204 | [_SC_V7_LP64_OFF64] = sizeof(long)==8 ? 1 : -1, | |
205 | [_SC_V7_LPBIG_OFFBIG] = -1, | |
206 | [_SC_SS_REPL_MAX] = -1, | |
207 | [_SC_TRACE_EVENT_NAME_MAX] = -1, | |
208 | [_SC_TRACE_NAME_MAX] = -1, | |
209 | [_SC_TRACE_SYS_MAX] = -1, | |
210 | [_SC_TRACE_USER_EVENT_MAX] = -1, | |
211 | [_SC_XOPEN_STREAMS] = JT_ZERO, | |
212 | [_SC_THREAD_ROBUST_PRIO_INHERIT] = -1, | |
213 | [_SC_THREAD_ROBUST_PRIO_PROTECT] = -1, | |
214 | }; | |
215 | ||
216 | if (name >= sizeof(values)/sizeof(values[0]) || !values[name]) { | |
217 | errno = EINVAL; | |
218 | return -1; | |
219 | } else if (values[name] >= -1) { | |
220 | return values[name]; | |
221 | } else if (values[name] < -256) { | |
e5f14be3 | 222 | #ifdef __wasilibc_unmodified_upstream // WASI has no getrlimit |
320054e8 DG |
223 | struct rlimit lim; |
224 | getrlimit(values[name]&16383, &lim); | |
225 | if (lim.rlim_cur == RLIM_INFINITY) | |
226 | return -1; | |
227 | return lim.rlim_cur > LONG_MAX ? LONG_MAX : lim.rlim_cur; | |
228 | #else | |
ec9f1c39 | 229 | // Not supported on wasi. |
320054e8 DG |
230 | errno = EINVAL; |
231 | return -1; | |
232 | #endif | |
233 | } | |
234 | ||
235 | switch ((unsigned char)values[name]) { | |
236 | case VER & 255: | |
237 | return _POSIX_VERSION; | |
238 | case JT_ARG_MAX & 255: | |
239 | return ARG_MAX; | |
e5f14be3 | 240 | #ifdef __wasilibc_unmodified_upstream // WASI has no mq |
320054e8 DG |
241 | case JT_MQ_PRIO_MAX & 255: |
242 | return MQ_PRIO_MAX; | |
243 | #endif | |
244 | case JT_PAGE_SIZE & 255: | |
245 | return PAGE_SIZE; | |
9f0d8e85 | 246 | #ifdef __wasilibc_unmodified_upstream // WASI has no semaphores |
320054e8 DG |
247 | case JT_SEM_VALUE_MAX & 255: |
248 | return SEM_VALUE_MAX; | |
9f0d8e85 | 249 | #endif |
320054e8 DG |
250 | case JT_DELAYTIMER_MAX & 255: |
251 | return DELAYTIMER_MAX; | |
252 | case JT_NPROCESSORS_CONF & 255: | |
253 | case JT_NPROCESSORS_ONLN & 255: ; | |
dcd28cf8 | 254 | #ifdef __wasilibc_unmodified_upstream |
320054e8 DG |
255 | unsigned char set[128] = {1}; |
256 | int i, cnt; | |
257 | __syscall(SYS_sched_getaffinity, 0, sizeof set, set); | |
258 | for (i=cnt=0; i<sizeof set; i++) | |
259 | for (; set[i]; set[i]&=set[i]-1, cnt++); | |
260 | return cnt; | |
261 | #else | |
dcd28cf8 | 262 | // WASI has no way to query the processor count |
320054e8 DG |
263 | return 1; |
264 | #endif | |
e5f14be3 | 265 | #ifdef __wasilibc_unmodified_upstream // WASI has no sysinfo |
320054e8 DG |
266 | case JT_PHYS_PAGES & 255: |
267 | case JT_AVPHYS_PAGES & 255: ; | |
268 | unsigned long long mem; | |
269 | struct sysinfo si; | |
270 | __lsysinfo(&si); | |
271 | if (!si.mem_unit) si.mem_unit = 1; | |
272 | if (name==_SC_PHYS_PAGES) mem = si.totalram; | |
273 | else mem = si.freeram + si.bufferram; | |
274 | mem *= si.mem_unit; | |
275 | mem /= PAGE_SIZE; | |
276 | return (mem > LONG_MAX) ? LONG_MAX : mem; | |
277 | #endif | |
278 | case JT_ZERO & 255: | |
279 | return 0; | |
280 | } | |
281 | return values[name]; | |
282 | } |