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