| /* See LICENSE file for copyright and license details. */ |
| #include <errno.h> |
| #include <unistd.h> |
| #include <limits.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| #include "util.h" |
| |
| struct var { |
| const char *k; |
| long v; |
| }; |
| |
| static const struct var pathconf_l[] = { |
| { "FILESIZEBITS", _PC_FILESIZEBITS }, |
| { "LINK_MAX", _PC_LINK_MAX }, |
| { "MAX_CANON", _PC_MAX_CANON }, |
| { "MAX_INPUT", _PC_MAX_INPUT }, |
| { "NAME_MAX", _PC_NAME_MAX }, |
| { "PATH_MAX", _PC_PATH_MAX }, |
| { "PIPE_BUF", _PC_PIPE_BUF }, |
| { "POSIX2_SYMLINKS", _PC_2_SYMLINKS }, |
| { "POSIX_ALLOC_SIZE_MIN", _PC_ALLOC_SIZE_MIN }, |
| { "POSIX_REC_INCR_XFER_SIZE", _PC_REC_INCR_XFER_SIZE }, |
| { "POSIX_REC_MAX_XFER_SIZE", _PC_REC_MAX_XFER_SIZE }, |
| { "POSIX_REC_MIN_XFER_SIZE", _PC_REC_MIN_XFER_SIZE }, |
| { "POSIX_REC_XFER_ALIGN", _PC_REC_XFER_ALIGN }, |
| { "SYMLINK_MAX", _PC_SYMLINK_MAX }, |
| { "_POSIX_CHOWN_RESTRICTED", _PC_CHOWN_RESTRICTED }, |
| { "_POSIX_NO_TRUNC", _PC_NO_TRUNC }, |
| { "_POSIX_VDISABLE", _PC_VDISABLE }, |
| { "_POSIX_ASYNC_IO", _PC_ASYNC_IO }, |
| { "_POSIX_PRIO_IO", _PC_PRIO_IO }, |
| { "_POSIX_SYNC_IO", _PC_SYNC_IO }, |
| #ifdef _PC_TIMESTAMP_RESOLUTION |
| { "_POSIX_TIMESTAMP_RESOLUTION", _PC_TIMESTAMP_RESOLUTION }, |
| #endif |
| }; |
| |
| static const struct var sysconf_l[] = { |
| { "AIO_LISTIO_MAX", _SC_AIO_LISTIO_MAX }, |
| { "AIO_MAX", _SC_AIO_MAX }, |
| { "AIO_PRIO_DELTA_MAX", _SC_AIO_PRIO_DELTA_MAX }, |
| { "ARG_MAX", _SC_ARG_MAX }, |
| { "ATEXIT_MAX", _SC_ATEXIT_MAX }, |
| { "BC_BASE_MAX", _SC_BC_BASE_MAX }, |
| { "BC_DIM_MAX", _SC_BC_DIM_MAX }, |
| { "BC_SCALE_MAX", _SC_BC_SCALE_MAX }, |
| { "BC_STRING_MAX", _SC_BC_STRING_MAX }, |
| { "CHILD_MAX", _SC_CHILD_MAX }, |
| { "COLL_WEIGHTS_MAX", _SC_COLL_WEIGHTS_MAX }, |
| { "DELAYTIMER_MAX", _SC_DELAYTIMER_MAX }, |
| { "EXPR_NEST_MAX", _SC_EXPR_NEST_MAX }, |
| { "HOST_NAME_MAX", _SC_HOST_NAME_MAX }, |
| { "IOV_MAX", _SC_IOV_MAX }, |
| { "LINE_MAX", _SC_LINE_MAX }, |
| { "LOGIN_NAME_MAX", _SC_LOGIN_NAME_MAX }, |
| { "NGROUPS_MAX", _SC_NGROUPS_MAX }, |
| { "MQ_OPEN_MAX", _SC_MQ_OPEN_MAX }, |
| { "MQ_PRIO_MAX", _SC_MQ_PRIO_MAX }, |
| { "OPEN_MAX", _SC_OPEN_MAX }, |
| { "_POSIX_ADVISORY_INFO", _SC_ADVISORY_INFO }, |
| { "_POSIX_BARRIERS", _SC_BARRIERS }, |
| { "_POSIX_ASYNCHRONOUS_IO", _SC_ASYNCHRONOUS_IO }, |
| { "_POSIX_CLOCK_SELECTION", _SC_CLOCK_SELECTION }, |
| { "_POSIX_CPUTIME", _SC_CPUTIME }, |
| { "_POSIX_FSYNC", _SC_FSYNC }, |
| { "_POSIX_IPV6", _SC_IPV6 }, |
| { "_POSIX_JOB_CONTROL", _SC_JOB_CONTROL }, |
| { "_POSIX_MAPPED_FILES", _SC_MAPPED_FILES }, |
| { "_POSIX_MEMLOCK", _SC_MEMLOCK }, |
| { "_POSIX_MEMLOCK_RANGE", _SC_MEMLOCK_RANGE }, |
| { "_POSIX_MEMORY_PROTECTION", _SC_MEMORY_PROTECTION }, |
| { "_POSIX_MESSAGE_PASSING", _SC_MESSAGE_PASSING }, |
| { "_POSIX_MONOTONIC_CLOCK", _SC_MONOTONIC_CLOCK }, |
| { "_POSIX_PRIORITIZED_IO", _SC_PRIORITIZED_IO }, |
| { "_POSIX_PRIORITY_SCHEDULING", _SC_PRIORITY_SCHEDULING }, |
| { "_POSIX_RAW_SOCKETS", _SC_RAW_SOCKETS }, |
| { "_POSIX_READER_WRITER_LOCKS", _SC_READER_WRITER_LOCKS }, |
| { "_POSIX_REALTIME_SIGNALS", _SC_REALTIME_SIGNALS }, |
| { "_POSIX_REGEXP", _SC_REGEXP }, |
| { "_POSIX_SAVED_IDS", _SC_SAVED_IDS }, |
| { "_POSIX_SEMAPHORES", _SC_SEMAPHORES }, |
| { "_POSIX_SHARED_MEMORY_OBJECTS", _SC_SHARED_MEMORY_OBJECTS }, |
| { "_POSIX_SHELL", _SC_SHELL }, |
| { "_POSIX_SPAWN", _SC_SPAWN }, |
| { "_POSIX_SPIN_LOCKS", _SC_SPIN_LOCKS }, |
| { "_POSIX_SPORADIC_SERVER", _SC_SPORADIC_SERVER }, |
| { "_POSIX_SS_REPL_MAX", _SC_SS_REPL_MAX }, |
| { "_POSIX_SYNCHRONIZED_IO", _SC_SYNCHRONIZED_IO }, |
| { "_POSIX_THREAD_ATTR_STACKADDR", _SC_THREAD_ATTR_STACKADDR }, |
| { "_POSIX_THREAD_ATTR_STACKSIZE", _SC_THREAD_ATTR_STACKSIZE }, |
| { "_POSIX_THREAD_CPUTIME", _SC_THREAD_CPUTIME }, |
| { "_POSIX_THREAD_PRIO_INHERIT", _SC_THREAD_PRIO_INHERIT }, |
| { "_POSIX_THREAD_PRIO_PROTECT", _SC_THREAD_PRIO_PROTECT }, |
| { "_POSIX_THREAD_PRIORITY_SCHEDULING", _SC_THREAD_PRIORITY_SCHEDULING }, |
| { "_POSIX_THREAD_PROCESS_SHARED", _SC_THREAD_PROCESS_SHARED }, |
| { "_POSIX_THREAD_ROBUST_PRIO_INHERIT", _SC_THREAD_ROBUST_PRIO_INHERIT }, |
| { "_POSIX_THREAD_ROBUST_PRIO_PROTECT", _SC_THREAD_ROBUST_PRIO_PROTECT }, |
| { "_POSIX_THREAD_SAFE_FUNCTIONS", _SC_THREAD_SAFE_FUNCTIONS }, |
| { "_POSIX_THREAD_SPORADIC_SERVER", _SC_THREAD_SPORADIC_SERVER }, |
| { "_POSIX_THREADS", _SC_THREADS }, |
| { "_POSIX_TIMEOUTS", _SC_TIMEOUTS }, |
| { "_POSIX_TIMERS", _SC_TIMERS }, |
| { "_POSIX_TRACE", _SC_TRACE }, |
| { "_POSIX_TRACE_EVENT_FILTER", _SC_TRACE_EVENT_FILTER }, |
| { "_POSIX_TRACE_EVENT_NAME_MAX", _SC_TRACE_EVENT_NAME_MAX }, |
| { "_POSIX_TRACE_INHERIT", _SC_TRACE_INHERIT }, |
| { "_POSIX_TRACE_LOG", _SC_TRACE_LOG }, |
| { "_POSIX_TRACE_NAME_MAX", _SC_TRACE_NAME_MAX }, |
| { "_POSIX_TRACE_SYS_MAX", _SC_TRACE_SYS_MAX }, |
| { "_POSIX_TRACE_USER_EVENT_MAX", _SC_TRACE_USER_EVENT_MAX }, |
| { "_POSIX_TYPED_MEMORY_OBJECTS", _SC_TYPED_MEMORY_OBJECTS }, |
| { "_POSIX_VERSION", _SC_VERSION }, |
| { "_POSIX_V7_ILP32_OFF32", _SC_V7_ILP32_OFF32 }, |
| { "_POSIX_V7_ILP32_OFFBIG", _SC_V7_ILP32_OFFBIG }, |
| { "_POSIX_V7_LP64_OFF64", _SC_V7_LP64_OFF64 }, |
| { "_POSIX_V7_LPBIG_OFFBIG", _SC_V7_LPBIG_OFFBIG }, |
| { "_POSIX2_C_BIND", _SC_2_C_BIND }, |
| { "_POSIX2_C_DEV", _SC_2_C_DEV }, |
| { "_POSIX2_CHAR_TERM", _SC_2_CHAR_TERM }, |
| { "_POSIX2_FORT_DEV", _SC_2_FORT_DEV }, |
| { "_POSIX2_FORT_RUN", _SC_2_FORT_RUN }, |
| { "_POSIX2_LOCALEDEF", _SC_2_LOCALEDEF }, |
| { "_POSIX2_PBS", _SC_2_PBS }, |
| { "_POSIX2_PBS_ACCOUNTING", _SC_2_PBS_ACCOUNTING }, |
| { "_POSIX2_PBS_CHECKPOINT", _SC_2_PBS_CHECKPOINT }, |
| { "_POSIX2_PBS_LOCATE", _SC_2_PBS_LOCATE }, |
| { "_POSIX2_PBS_MESSAGE", _SC_2_PBS_MESSAGE }, |
| { "_POSIX2_PBS_TRACK", _SC_2_PBS_TRACK }, |
| { "_POSIX2_SW_DEV", _SC_2_SW_DEV }, |
| { "_POSIX2_UPE", _SC_2_UPE }, |
| { "_POSIX2_VERSION", _SC_2_VERSION }, |
| { "PAGE_SIZE", _SC_PAGE_SIZE }, |
| { "PAGESIZE", _SC_PAGESIZE }, |
| { "PTHREAD_DESTRUCTOR_ITERATIONS", _SC_THREAD_DESTRUCTOR_ITERATIONS }, |
| { "PTHREAD_KEYS_MAX", _SC_THREAD_KEYS_MAX }, |
| { "PTHREAD_STACK_MIN", _SC_THREAD_STACK_MIN }, |
| { "PTHREAD_THREADS_MAX", _SC_THREAD_THREADS_MAX }, |
| { "RE_DUP_MAX", _SC_RE_DUP_MAX }, |
| { "RTSIG_MAX", _SC_RTSIG_MAX }, |
| { "SEM_NSEMS_MAX", _SC_SEM_NSEMS_MAX }, |
| { "SEM_VALUE_MAX", _SC_SEM_VALUE_MAX }, |
| { "SIGQUEUE_MAX", _SC_SIGQUEUE_MAX }, |
| { "STREAM_MAX", _SC_STREAM_MAX }, |
| { "SYMLOOP_MAX", _SC_SYMLOOP_MAX }, |
| { "TIMER_MAX", _SC_TIMER_MAX }, |
| { "TTY_NAME_MAX", _SC_TTY_NAME_MAX }, |
| { "TZNAME_MAX", _SC_TZNAME_MAX }, |
| { "_XOPEN_CRYPT", _SC_XOPEN_CRYPT }, |
| { "_XOPEN_ENH_I18N", _SC_XOPEN_ENH_I18N }, |
| { "_XOPEN_REALTIME", _SC_XOPEN_REALTIME }, |
| { "_XOPEN_REALTIME_THREADS", _SC_XOPEN_REALTIME_THREADS }, |
| { "_XOPEN_SHM", _SC_XOPEN_SHM }, |
| { "_XOPEN_STREAMS", _SC_XOPEN_STREAMS }, |
| { "_XOPEN_UNIX", _SC_XOPEN_UNIX }, |
| #ifdef _SC_XOPEN_UUCP |
| { "_XOPEN_UUCP", _SC_XOPEN_UUCP }, |
| #endif |
| { "_XOPEN_VERSION", _SC_XOPEN_VERSION }, |
| }; |
| |
| static const struct var confstr_l[] = { |
| { "PATH", _CS_PATH}, |
| { "POSIX_V7_ILP32_OFF32_CFLAGS", _CS_POSIX_V7_ILP32_OFF32_CFLAGS }, |
| { "POSIX_V7_ILP32_OFF32_LDFLAGS", _CS_POSIX_V7_ILP32_OFF32_LDFLAGS }, |
| { "POSIX_V7_ILP32_OFF32_LIBS", _CS_POSIX_V7_ILP32_OFF32_LIBS }, |
| { "POSIX_V7_ILP32_OFFBIG_CFLAGS", _CS_POSIX_V7_ILP32_OFFBIG_CFLAGS }, |
| { "POSIX_V7_ILP32_OFFBIG_LDFLAGS", _CS_POSIX_V7_ILP32_OFFBIG_LDFLAGS }, |
| { "POSIX_V7_ILP32_OFFBIG_LIBS", _CS_POSIX_V7_ILP32_OFFBIG_LIBS }, |
| { "POSIX_V7_LP64_OFF64_CFLAGS", _CS_POSIX_V7_LP64_OFF64_CFLAGS }, |
| { "POSIX_V7_LP64_OFF64_LDFLAGS", _CS_POSIX_V7_LP64_OFF64_LDFLAGS }, |
| { "POSIX_V7_LP64_OFF64_LIBS", _CS_POSIX_V7_LP64_OFF64_LIBS }, |
| { "POSIX_V7_LPBIG_OFFBIG_CFLAGS", _CS_POSIX_V7_LPBIG_OFFBIG_CFLAGS }, |
| { "POSIX_V7_LPBIG_OFFBIG_LDFLAGS", _CS_POSIX_V7_LPBIG_OFFBIG_LDFLAGS }, |
| { "POSIX_V7_LPBIG_OFFBIG_LIBS", _CS_POSIX_V7_LPBIG_OFFBIG_LIBS }, |
| #ifdef _CS_POSIX_V7_THREADS_CFLAGS |
| { "POSIX_V7_THREADS_CFLAGS", _CS_POSIX_V7_THREADS_CFLAGS }, |
| #endif |
| #ifdef _CS_POSIX_V7_THREADS_LDFLAGS |
| { "POSIX_V7_THREADS_LDFLAGS", _CS_POSIX_V7_THREADS_LDFLAGS }, |
| #endif |
| { "POSIX_V7_WIDTH_RESTRICTED_ENVS", _CS_POSIX_V7_WIDTH_RESTRICTED_ENVS }, |
| #ifdef _CS_V7_ENV |
| { "V7_ENV", _CS_V7_ENV }, |
| #endif |
| }; |
| |
| static const struct var limits_l[] = { |
| { "_POSIX_CLOCKRES_MIN", _POSIX_CLOCKRES_MIN }, |
| #ifdef _POSIX_AIO_LISTIO_MAX |
| { "_POSIX_AIO_LISTIO_MAX", _POSIX_AIO_LISTIO_MAX }, |
| #endif |
| #ifdef _POSIX_AIO_MAX |
| { "_POSIX_AIO_MAX", _POSIX_AIO_MAX }, |
| #endif |
| { "_POSIX_ARG_MAX", _POSIX_ARG_MAX }, |
| { "_POSIX_CHILD_MAX", _POSIX_CHILD_MAX }, |
| #ifdef _POSIX_DELAYTIMER_MAX |
| { "_POSIX_DELAYTIMER_MAX", _POSIX_DELAYTIMER_MAX }, |
| #endif |
| { "_POSIX_HOST_NAME_MAX", _POSIX_HOST_NAME_MAX }, |
| { "_POSIX_LINK_MAX", _POSIX_LINK_MAX }, |
| { "_POSIX_LOGIN_NAME_MAX", _POSIX_LOGIN_NAME_MAX }, |
| { "_POSIX_MAX_CANON", _POSIX_MAX_CANON }, |
| { "_POSIX_MAX_INPUT", _POSIX_MAX_INPUT }, |
| #ifdef _POSIX_MQ_OPEN_MAX |
| { "_POSIX_MQ_OPEN_MAX", _POSIX_MQ_OPEN_MAX }, |
| #endif |
| #ifdef _POSIX_MQ_PRIO_MAX |
| { "_POSIX_MQ_PRIO_MAX", _POSIX_MQ_PRIO_MAX }, |
| #endif |
| { "_POSIX_NAME_MAX", _POSIX_NAME_MAX }, |
| { "_POSIX_NGROUPS_MAX", _POSIX_NGROUPS_MAX }, |
| { "_POSIX_OPEN_MAX", _POSIX_OPEN_MAX }, |
| { "_POSIX_PATH_MAX", _POSIX_PATH_MAX }, |
| { "_POSIX_PIPE_BUF", _POSIX_PIPE_BUF }, |
| { "_POSIX_RE_DUP_MAX", _POSIX_RE_DUP_MAX }, |
| #ifdef _POSIX_RTSIG_MAX |
| { "_POSIX_RTSIG_MAX", _POSIX_RTSIG_MAX }, |
| #endif |
| { "_POSIX_SEM_NSEMS_MAX", _POSIX_SEM_NSEMS_MAX }, |
| { "_POSIX_SEM_VALUE_MAX", _POSIX_SEM_VALUE_MAX }, |
| #ifdef _POSIX_SIGQUEUE_MAX |
| { "_POSIX_SIGQUEUE_MAX", _POSIX_SIGQUEUE_MAX }, |
| #endif |
| { "_POSIX_SSIZE_MAX", _POSIX_SSIZE_MAX }, |
| #ifdef _POSIX_SS_REPL_MAX |
| { "_POSIX_SS_REPL_MAX", _POSIX_SS_REPL_MAX }, |
| #endif |
| { "_POSIX_STREAM_MAX", _POSIX_STREAM_MAX }, |
| { "_POSIX_SYMLINK_MAX", _POSIX_SYMLINK_MAX }, |
| { "_POSIX_SYMLOOP_MAX", _POSIX_SYMLOOP_MAX }, |
| { "_POSIX_THREAD_DESTRUCTOR_ITERATIONS", _POSIX_THREAD_DESTRUCTOR_ITERATIONS }, |
| { "_POSIX_THREAD_KEYS_MAX", _POSIX_THREAD_KEYS_MAX }, |
| { "_POSIX_THREAD_THREADS_MAX", _POSIX_THREAD_THREADS_MAX }, |
| #ifdef _POSIX_TIMER_MAX |
| { "_POSIX_TIMER_MAX", _POSIX_TIMER_MAX }, |
| #endif |
| { "_POSIX_TTY_NAME_MAX", _POSIX_TTY_NAME_MAX }, |
| { "_POSIX_TZNAME_MAX", _POSIX_TZNAME_MAX }, |
| { "_POSIX2_BC_BASE_MAX", _POSIX2_BC_BASE_MAX }, |
| { "_POSIX2_BC_DIM_MAX", _POSIX2_BC_DIM_MAX }, |
| { "_POSIX2_BC_SCALE_MAX", _POSIX2_BC_SCALE_MAX }, |
| { "_POSIX2_BC_STRING_MAX", _POSIX2_BC_STRING_MAX }, |
| { "_POSIX2_CHARCLASS_NAME_MAX", _POSIX2_CHARCLASS_NAME_MAX }, |
| { "_POSIX2_COLL_WEIGHTS_MAX", _POSIX2_COLL_WEIGHTS_MAX }, |
| { "_POSIX2_EXPR_NEST_MAX", _POSIX2_EXPR_NEST_MAX }, |
| { "_POSIX2_LINE_MAX", _POSIX2_LINE_MAX }, |
| { "_POSIX2_RE_DUP_MAX", _POSIX2_RE_DUP_MAX }, |
| }; |
| |
| void |
| usage(void) |
| { |
| eprintf("usage: %s -v spec arc arco\n", argv0); |
| } |
| |
| int |
| main(int argc, char *argv[]) |
| { |
| size_t len; |
| long res; |
| int i; |
| char *str; |
| |
| ARGBEGIN { |
| case 'v': |
| /* ignore */ |
| EARGF(usage()); |
| break; |
| } ARGEND |
| |
| if (argc == 1) { |
| /* sysconf */ |
| for (i = 0; i < LEN(sysconf_l); i++) { |
| if (strcmp(argv[0], sysconf_l[i].k)) |
| continue; |
| errno = 0; |
| if ((res = sysconf(sysconf_l[i].v)) < 0) { |
| if (errno) |
| eprintf("sysconf %ld:", sysconf_l[i].v); |
| puts("undefined"); |
| } else { |
| printf("%ld\n", res); |
| } |
| return 0; |
| } |
| /* confstr */ |
| for (i = 0; i < LEN(confstr_l); i++) { |
| if (strcmp(argv[0], confstr_l[i].k)) |
| continue; |
| errno = 0; |
| if (!(len = confstr(confstr_l[i].v, NULL, 0))) { |
| if (errno) |
| eprintf("confstr %ld:", confstr_l[i].v); |
| puts("undefined"); |
| } else { |
| str = emalloc(len); |
| errno = 0; |
| if (!confstr(confstr_l[i].v, str, len)) { |
| if (errno) |
| eprintf("confstr %ld:", confstr_l[i].v); |
| puts("undefined"); |
| } else { |
| puts(str); |
| } |
| free(str); |
| } |
| return 0; |
| } |
| /* limits */ |
| for (i = 0; i < LEN(limits_l); i++) { |
| if (strcmp(argv[0], limits_l[i].k)) |
| continue; |
| printf("%ld\n", limits_l[i].v); |
| return 0; |
| } |
| } else if (argc == 2) { |
| /* pathconf */ |
| for (i = 0; i < LEN(pathconf_l); i++) { |
| if (strcmp(argv[0], pathconf_l[i].k)) |
| continue; |
| errno = 0; |
| if ((res = pathconf(argv[1], pathconf_l[i].v)) < 0) { |
| if (errno) |
| eprintf("pathconf %ld:", pathconf_l[i].v); |
| puts("undefined"); |
| } else { |
| printf("%ld\n", res); |
| } |
| return 0; |
| } |
| } else { |
| usage(); |
| } |
| |
| puts("undefined"); |
| |
| return 1; |
| } |