/*- * Copyright (c) 1996, 1998 The NetBSD Foundation, Inc. * Copyright (c) 2011 Red Hat, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by J.T. Conklin. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include #include #include #include #include #include #include #include struct conf_variable { const char *name; enum { SYSCONF, CONFSTR, PATHCONF, CONSTANT } type; long long value; }; static const struct conf_variable conf_table[] = { /* Symbolic constants from confstr() */ { "PATH", CONFSTR, _CS_PATH }, { "POSIX_V7_ILP32_OFF32_CFLAGS", CONFSTR, _CS_POSIX_V7_ILP32_OFF32_CFLAGS }, { "POSIX_V7_ILP32_OFF32_LDFLAGS", CONFSTR, _CS_POSIX_V7_ILP32_OFF32_LDFLAGS }, { "POSIX_V7_ILP32_OFF32_LIBS", CONFSTR, _CS_POSIX_V7_ILP32_OFF32_LIBS }, { "POSIX_V7_ILP32_OFFBIG_CFLAGS", CONFSTR, _CS_POSIX_V7_ILP32_OFFBIG_CFLAGS }, { "POSIX_V7_ILP32_OFFBIG_LDFLAGS", CONFSTR, _CS_POSIX_V7_ILP32_OFFBIG_LDFLAGS }, { "POSIX_V7_ILP32_OFFBIG_LIBS", CONFSTR, _CS_POSIX_V7_ILP32_OFFBIG_LIBS }, { "POSIX_V7_LP64_OFF64_CFLAGS", CONFSTR, _CS_POSIX_V7_LP64_OFF64_CFLAGS }, { "POSIX_V7_LP64_OFF64_LDFLAGS", CONFSTR, _CS_POSIX_V7_LP64_OFF64_LDFLAGS }, { "POSIX_V7_LP64_OFF64_LIBS", CONFSTR, _CS_POSIX_V7_LP64_OFF64_LIBS }, { "POSIX_V7_LPBIG_OFFBIG_CFLAGS", CONFSTR, _CS_POSIX_V7_LPBIG_OFFBIG_CFLAGS }, { "POSIX_V7_LPBIG_OFFBIG_LDFLAGS", CONFSTR, _CS_POSIX_V7_LPBIG_OFFBIG_LDFLAGS }, { "POSIX_V7_LPBIG_OFFBIG_LIBS", CONFSTR, _CS_POSIX_V7_LPBIG_OFFBIG_LIBS }, { "POSIX_V7_THREADS_CFLAGS", CONFSTR, _CS_POSIX_V7_THREADS_CFLAGS }, { "POSIX_V7_THREADS_LDFLAGS", CONFSTR, _CS_POSIX_V7_THREADS_LDFLAGS }, { "POSIX_V7_WIDTH_RESTRICTED_ENVS", CONFSTR, _CS_POSIX_V7_WIDTH_RESTRICTED_ENVS }, { "POSIX_V6_ILP32_OFF32_CFLAGS", CONFSTR, _CS_POSIX_V6_ILP32_OFF32_CFLAGS }, { "POSIX_V6_ILP32_OFF32_LDFLAGS", CONFSTR, _CS_POSIX_V6_ILP32_OFF32_LDFLAGS }, { "POSIX_V6_ILP32_OFF32_LIBS", CONFSTR, _CS_POSIX_V6_ILP32_OFF32_LIBS }, { "POSIX_V6_ILP32_OFFBIG_CFLAGS", CONFSTR, _CS_POSIX_V6_ILP32_OFFBIG_CFLAGS }, { "POSIX_V6_ILP32_OFFBIG_LDFLAGS", CONFSTR, _CS_POSIX_V6_ILP32_OFFBIG_LDFLAGS }, { "POSIX_V6_ILP32_OFFBIG_LIBS", CONFSTR, _CS_POSIX_V6_ILP32_OFFBIG_LIBS }, { "POSIX_V6_LP64_OFF64_CFLAGS", CONFSTR, _CS_POSIX_V6_LP64_OFF64_CFLAGS }, { "POSIX_V6_LP64_OFF64_LDFLAGS", CONFSTR, _CS_POSIX_V6_LP64_OFF64_LDFLAGS }, { "POSIX_V6_LP64_OFF64_LIBS", CONFSTR, _CS_POSIX_V6_LP64_OFF64_LIBS }, { "POSIX_V6_LPBIG_OFFBIG_CFLAGS", CONFSTR, _CS_POSIX_V6_LPBIG_OFFBIG_CFLAGS }, { "POSIX_V6_LPBIG_OFFBIG_LDFLAGS", CONFSTR, _CS_POSIX_V6_LPBIG_OFFBIG_LDFLAGS }, { "POSIX_V6_LPBIG_OFFBIG_LIBS", CONFSTR, _CS_POSIX_V6_LPBIG_OFFBIG_LIBS }, { "POSIX_V6_WIDTH_RESTRICTED_ENVS", CONFSTR, _CS_POSIX_V6_WIDTH_RESTRICTED_ENVS }, { "XBS5_ILP32_OFF32_CFLAGS", CONFSTR, _CS_XBS5_ILP32_OFF32_CFLAGS }, { "XBS5_ILP32_OFF32_LDFLAGS", CONFSTR, _CS_XBS5_ILP32_OFF32_LDFLAGS }, { "XBS5_ILP32_OFF32_LIBS", CONFSTR, _CS_XBS5_ILP32_OFF32_LIBS }, { "XBS5_ILP32_OFF32_LINTFLAGS", CONFSTR, _CS_XBS5_ILP32_OFF32_LINTFLAGS }, { "XBS5_ILP32_OFFBIG_CFLAGS", CONFSTR, _CS_XBS5_ILP32_OFFBIG_CFLAGS }, { "XBS5_ILP32_OFFBIG_LDFLAGS", CONFSTR, _CS_XBS5_ILP32_OFFBIG_LDFLAGS }, { "XBS5_ILP32_OFFBIG_LIBS", CONFSTR, _CS_XBS5_ILP32_OFFBIG_LIBS }, { "XBS5_ILP32_OFFBIG_LINTFLAGS", CONFSTR, _CS_XBS5_ILP32_OFFBIG_LINTFLAGS }, { "XBS5_LP64_OFF64_CFLAGS", CONFSTR, _CS_XBS5_LP64_OFF64_CFLAGS }, { "XBS5_LP64_OFF64_LDFLAGS", CONFSTR, _CS_XBS5_LP64_OFF64_LDFLAGS }, { "XBS5_LP64_OFF64_LIBS", CONFSTR, _CS_XBS5_LP64_OFF64_LIBS }, { "XBS5_LP64_OFF64_LINTFLAGS", CONFSTR, _CS_XBS5_LP64_OFF64_LINTFLAGS }, { "XBS5_LPBIG_OFFBIG_CFLAGS", CONFSTR, _CS_XBS5_LPBIG_OFFBIG_CFLAGS }, { "XBS5_LPBIG_OFFBIG_LDFLAGS", CONFSTR, _CS_XBS5_LPBIG_OFFBIG_LDFLAGS }, { "XBS5_LPBIG_OFFBIG_LIBS", CONFSTR, _CS_XBS5_LPBIG_OFFBIG_LIBS }, { "XBS5_LPBIG_OFFBIG_LINTFLAGS", CONFSTR, _CS_XBS5_LPBIG_OFFBIG_LINTFLAGS }, { "XBS5_WIDTH_RESTRICTED_ENVS", CONFSTR, _CS_XBS5_WIDTH_RESTRICTED_ENVS }, { "V7_ENV", CONFSTR, _CS_V7_ENV }, { "V6_ENV", CONFSTR, _CS_V6_ENV }, /* Symbolic constants from */ { "_POSIX_AIO_LISTIO_MAX", CONSTANT, _POSIX_AIO_LISTIO_MAX }, { "_POSIX_AIO_MAX", CONSTANT, _POSIX_AIO_MAX }, { "_POSIX_ARG_MAX", CONSTANT, _POSIX_ARG_MAX }, { "_POSIX_CHILD_MAX", CONSTANT, _POSIX_CHILD_MAX }, { "_POSIX_CLOCKRES_MIN", CONSTANT, _POSIX_CLOCKRES_MIN }, { "_POSIX_DELAYTIMER_MAX", CONSTANT, _POSIX_DELAYTIMER_MAX }, { "_POSIX_HOST_NAME_MAX", CONSTANT, _POSIX_HOST_NAME_MAX }, { "_POSIX_LINK_MAX", CONSTANT, _POSIX_LINK_MAX }, { "_POSIX_LOGIN_NAME_MAX", CONSTANT, _POSIX_LOGIN_NAME_MAX }, { "_POSIX_MAX_CANON", CONSTANT, _POSIX_MAX_CANON }, { "_POSIX_MAX_INPUT", CONSTANT, _POSIX_MAX_INPUT }, { "_POSIX_MQ_OPEN_MAX", CONSTANT, _POSIX_MQ_OPEN_MAX }, { "_POSIX_MQ_PRIO_MAX", CONSTANT, _POSIX_MQ_PRIO_MAX }, { "_POSIX_NAME_MAX", CONSTANT, _POSIX_NAME_MAX }, { "_POSIX_NGROUPS_MAX", CONSTANT, _POSIX_NGROUPS_MAX }, { "_POSIX_OPEN_MAX", CONSTANT, _POSIX_OPEN_MAX }, { "_POSIX_PATH_MAX", CONSTANT, _POSIX_PATH_MAX }, { "_POSIX_PIPE_BUF", CONSTANT, _POSIX_PIPE_BUF }, { "_POSIX_RE_DUP_MAX", CONSTANT, _POSIX_RE_DUP_MAX }, { "_POSIX_RTSIG_MAX", CONSTANT, _POSIX_RTSIG_MAX }, { "_POSIX_SEM_NSEMS_MAX", CONSTANT, _POSIX_SEM_NSEMS_MAX }, { "_POSIX_SEM_VALUE_MAX", CONSTANT, _POSIX_SEM_VALUE_MAX }, { "_POSIX_SIGQUEUE_MAX", CONSTANT, _POSIX_SIGQUEUE_MAX }, { "_POSIX_SSIZE_MAX", CONSTANT, _POSIX_SSIZE_MAX }, { "_POSIX_SS_REPL_MAX", CONSTANT, _POSIX_SS_REPL_MAX }, { "_POSIX_STREAM_MAX", CONSTANT, _POSIX_STREAM_MAX }, { "_POSIX_SYMLINK_MAX", CONSTANT, _POSIX_SYMLINK_MAX }, { "_POSIX_SYMLOOP_MAX", CONSTANT, _POSIX_SYMLOOP_MAX }, { "_POSIX_THREAD_DESTRUCTOR_ITERATIONS", CONSTANT, _POSIX_THREAD_DESTRUCTOR_ITERATIONS }, { "_POSIX_THREAD_KEYS_MAX", CONSTANT, _POSIX_THREAD_KEYS_MAX }, { "_POSIX_THREAD_THREADS_MAX", CONSTANT, _POSIX_THREAD_THREADS_MAX }, { "_POSIX_TIMER_MAX", CONSTANT, _POSIX_TIMER_MAX }, { "_POSIX_TRACE_EVENT_NAME_MAX", CONSTANT, _POSIX_TRACE_EVENT_NAME_MAX }, { "_POSIX_TRACE_NAME_MAX", CONSTANT, _POSIX_TRACE_NAME_MAX }, { "_POSIX_TRACE_SYS_MAX", CONSTANT, _POSIX_TRACE_SYS_MAX }, { "_POSIX_TRACE_USER_EVENT_MAX", CONSTANT, _POSIX_TRACE_USER_EVENT_MAX }, { "_POSIX_TTY_NAME_MAX", CONSTANT, _POSIX_TTY_NAME_MAX }, { "_POSIX_TZNAME_MAX", CONSTANT, _POSIX_TZNAME_MAX }, { "_POSIX2_BC_BASE_MAX", CONSTANT, _POSIX2_BC_BASE_MAX }, { "_POSIX2_BC_DIM_MAX", CONSTANT, _POSIX2_BC_DIM_MAX }, { "_POSIX2_BC_SCALE_MAX", CONSTANT, _POSIX2_BC_SCALE_MAX }, { "_POSIX2_BC_STRING_MAX", CONSTANT, _POSIX2_BC_STRING_MAX }, { "_POSIX2_COLL_WEIGHTS_MAX", CONSTANT, _POSIX2_COLL_WEIGHTS_MAX }, { "_POSIX2_EXPR_NEXT_MAX", CONSTANT, _POSIX2_EXPR_NEST_MAX }, { "_POSIX2_LINE_MAX", CONSTANT, _POSIX2_LINE_MAX }, { "_POSIX2_RE_DUP_MAX", CONSTANT, _POSIX2_RE_DUP_MAX }, { "_XOPEN_IOV_MAX", CONSTANT, _XOPEN_IOV_MAX }, { "_XOPEN_NAME_MAX", CONSTANT, _XOPEN_NAME_MAX }, { "_XOPEN_PATH_MAX", CONSTANT, _XOPEN_PATH_MAX }, { "CHAR_BIT", CONSTANT, CHAR_BIT }, { "CHAR_MAX", CONSTANT, CHAR_MAX }, { "CHAR_MIN", CONSTANT, CHAR_MIN }, { "INT_MAX", CONSTANT, INT_MAX }, { "INT_MIN", CONSTANT, INT_MIN }, { "LLONG_MIN", CONSTANT, LLONG_MIN }, { "LLONG_MAX", CONSTANT, LLONG_MAX }, { "LONG_BIT", CONSTANT, LONG_BIT }, { "LONG_MAX", CONSTANT, LONG_MAX }, { "LONG_MIN", CONSTANT, LONG_MIN }, { "MB_LEN_MAX", CONSTANT, MB_LEN_MAX }, { "SCHAR_MAX", CONSTANT, SCHAR_MAX }, { "SCHAR_MIN", CONSTANT, SCHAR_MIN }, { "SHRT_MAX", CONSTANT, SHRT_MAX }, { "SHRT_MIN", CONSTANT, SHRT_MIN }, { "SSIZE_MAX", CONSTANT, SSIZE_MAX }, { "UCHAR_MAX", CONSTANT, UCHAR_MAX }, { "UINT_MAX", CONSTANT, UINT_MAX }, { "ULLONG_MAX", CONSTANT, ULLONG_MAX }, { "ULONG_MAX", CONSTANT, ULONG_MAX }, { "USHRT_MAX", CONSTANT, USHRT_MAX }, { "WORD_BIT", CONSTANT, WORD_BIT }, { "NL_ARGMAX", CONSTANT, NL_ARGMAX }, { "ML_LANGMAX", CONSTANT, NL_LANGMAX }, { "NL_MSGMAX", CONSTANT, NL_MSGMAX }, { "NL_SETMAX", CONSTANT, NL_SETMAX }, { "NL_TEXTMAX", CONSTANT, NL_TEXTMAX }, { "NZERO", CONSTANT, NZERO }, /* required by POSIX.1-2008 for compatibility with earlier versions */ { "POSIX2_BC_BASE_MAX", CONSTANT, _POSIX2_BC_BASE_MAX }, { "POSIX2_BC_DIM_MAX", CONSTANT, _POSIX2_BC_DIM_MAX }, { "POSIX2_BC_SCALE_MAX", CONSTANT, _POSIX2_BC_SCALE_MAX }, { "POSIX2_BC_STRING_MAX", CONSTANT, _POSIX2_BC_STRING_MAX }, { "POSIX2_COLL_WEIGHTS_MAX", CONSTANT, _POSIX2_COLL_WEIGHTS_MAX }, { "POSIX2_EXPR_NEXT_MAX", CONSTANT, _POSIX2_EXPR_NEST_MAX }, { "POSIX2_LINE_MAX", CONSTANT, _POSIX2_LINE_MAX }, { "POSIX2_RE_DUP_MAX", CONSTANT, _POSIX2_RE_DUP_MAX }, /* Variables from fpathconf() */ { "FILESIZEBITS", PATHCONF, _PC_FILESIZEBITS }, { "LINK_MAX", PATHCONF, _PC_LINK_MAX }, { "MAX_CANON", PATHCONF, _PC_MAX_CANON }, { "MAX_INPUT", PATHCONF, _PC_MAX_INPUT }, { "NAME_MAX", PATHCONF, _PC_NAME_MAX }, { "PATH_MAX", PATHCONF, _PC_PATH_MAX }, { "PIPE_BUF", PATHCONF, _PC_PIPE_BUF }, { "POSIX2_SYMLINKS", PATHCONF, _PC_2_SYMLINKS }, { "POSIX_ALLOC_SIZE_MIN", PATHCONF, _PC_ALLOC_SIZE_MIN }, { "POSIX_REC_INCR_XFER_SIZE", PATHCONF, _PC_REC_INCR_XFER_SIZE }, { "POSIX_REC_MAX_XFER_SIZE", PATHCONF, _PC_REC_MAX_XFER_SIZE }, { "POSIX_REC_MIN_XFER_SIZE", PATHCONF, _PC_REC_MIN_XFER_SIZE }, { "POSIX_REC_XFER_ALIGN", PATHCONF, _PC_REC_XFER_ALIGN }, { "SYMLINK_MAX", PATHCONF, _PC_SYMLINK_MAX }, { "_POSIX_CHOWN_RESTRICTED", PATHCONF, _PC_CHOWN_RESTRICTED }, { "_POSIX_NO_TRUNC", PATHCONF, _PC_NO_TRUNC }, { "_POSIX_VDISABLE", PATHCONF, _PC_VDISABLE }, { "_POSIX_ASYNC_IO", PATHCONF, _PC_ASYNC_IO }, { "_POSIX_PRIO_IO", PATHCONF, _PC_PRIO_IO }, { "_POSIX_SYNC_IO", PATHCONF, _PC_SYNC_IO }, { "_POSIX_TIMESTAMP_RESOLUTION", PATHCONF, _PC_TIMESTAMP_RESOLUTION }, /* Variables from sysconf() */ { "AIO_LISTIO_MAX", SYSCONF, _SC_AIO_LISTIO_MAX }, { "AIO_MAX", SYSCONF, _SC_AIO_MAX }, { "AIO_PRIO_DELTA_MAX", SYSCONF, _SC_AIO_PRIO_DELTA_MAX }, { "ARG_MAX", SYSCONF, _SC_ARG_MAX }, { "ATEXIT_MAX", SYSCONF, _SC_ATEXIT_MAX }, { "BC_BASE_MAX", SYSCONF, _SC_BC_BASE_MAX }, { "BC_DIM_MAX", SYSCONF, _SC_BC_DIM_MAX }, { "BC_SCALE_MAX", SYSCONF, _SC_BC_SCALE_MAX }, { "BC_STRING_MAX", SYSCONF, _SC_BC_STRING_MAX }, { "CHILD_MAX", SYSCONF, _SC_CHILD_MAX }, { "CLK_TCK", SYSCONF, _SC_CLK_TCK }, { "COLL_WEIGHTS_MAX", SYSCONF, _SC_COLL_WEIGHTS_MAX }, { "DELAYTIMER_MAX", SYSCONF, _SC_DELAYTIMER_MAX }, { "EXPR_NEST_MAX", SYSCONF, _SC_EXPR_NEST_MAX }, { "GETGR_R_SIZE_MAX", SYSCONF, _SC_GETGR_R_SIZE_MAX }, { "GETPW_R_SIZE_MAX", SYSCONF, _SC_GETPW_R_SIZE_MAX }, { "HOST_NAME_MAX", SYSCONF, _SC_HOST_NAME_MAX }, { "IOV_MAX", SYSCONF, _SC_IOV_MAX }, { "LINE_MAX", SYSCONF, _SC_LINE_MAX }, { "LOGIN_NAME_MAX", SYSCONF, _SC_LOGIN_NAME_MAX }, { "MQ_OPEN_MAX", SYSCONF, _SC_MQ_OPEN_MAX }, { "MQ_PRIO_MAX", SYSCONF, _SC_MQ_PRIO_MAX }, { "NGROUPS_MAX", SYSCONF, _SC_NGROUPS_MAX }, { "OPEN_MAX", SYSCONF, _SC_OPEN_MAX }, { "PAGE_SIZE", SYSCONF, _SC_PAGESIZE }, { "PAGESIZE", SYSCONF, _SC_PAGESIZE }, { "PTHREAD_DESTRUCTOR_ITERATIONS", SYSCONF, _SC_THREAD_DESTRUCTOR_ITERATIONS }, { "PTHREAD_KEYS_MAX", SYSCONF, _SC_THREAD_KEYS_MAX }, { "PTHREAD_STACK_MIN", SYSCONF, _SC_THREAD_STACK_MIN }, { "PTHREAD_THREADS_MAX", SYSCONF, _SC_THREAD_THREADS_MAX }, { "RE_DUP_MAX", SYSCONF, _SC_RE_DUP_MAX }, { "RTSIG_MAX", SYSCONF, _SC_RTSIG_MAX }, { "SEM_NSEMS_MAX", SYSCONF, _SC_SEM_NSEMS_MAX }, { "SEM_VALUE_MAX", SYSCONF, _SC_SEM_VALUE_MAX }, { "SIGQUEUE_MAX", SYSCONF, _SC_SIGQUEUE_MAX }, { "STREAM_MAX", SYSCONF, _SC_STREAM_MAX }, { "SYMLOOP_MAX", SYSCONF, _SC_SYMLOOP_MAX }, { "TIMER_MAX", SYSCONF, _SC_TIMER_MAX }, { "TTY_NAME_MAX", SYSCONF, _SC_TTY_NAME_MAX }, { "TZNAME_MAX", SYSCONF, _SC_TZNAME_MAX }, { "_POSIX_ADVISORY_INFO", SYSCONF, _SC_ADVISORY_INFO }, { "_POSIX_ASYNCHRONOUS_IO", SYSCONF, _SC_ASYNCHRONOUS_IO }, { "_POSIX_BARRIERS", SYSCONF, _SC_BARRIERS }, { "_POSIX_CLOCK_SELECTION", SYSCONF, _SC_CLOCK_SELECTION }, { "_POSIX_CPUTIME", SYSCONF, _SC_CPUTIME }, { "_POSIX_FSYNC", SYSCONF, _SC_FSYNC }, { "_POSIX_IPV6", SYSCONF, _SC_IPV6 }, { "_POSIX_JOB_CONTROL", SYSCONF, _SC_JOB_CONTROL }, { "_POSIX_MAPPED_FILES", SYSCONF, _SC_MAPPED_FILES }, { "_POSIX_MEMLOCK", SYSCONF, _SC_MEMLOCK }, { "_POSIX_MEMLOCK_RANGE", SYSCONF, _SC_MEMLOCK_RANGE }, { "_POSIX_MEMORY_PROTECTION", SYSCONF, _SC_MEMORY_PROTECTION }, { "_POSIX_MESSAGE_PASSING", SYSCONF, _SC_MESSAGE_PASSING }, { "_POSIX_MONOTONIC_CLOCK", SYSCONF, _SC_MONOTONIC_CLOCK }, { "_POSIX_PRIORITIZED_IO", SYSCONF, _SC_PRIORITIZED_IO }, { "_POSIX_PRIORITY_SCHEDULING", SYSCONF, _SC_PRIORITY_SCHEDULING }, { "_POSIX_RAW_SOCKETS", SYSCONF, _SC_RAW_SOCKETS }, { "_POSIX_READER_WRITER_LOCKS", SYSCONF, _SC_READER_WRITER_LOCKS }, { "_POSIX_REALTIME_SIGNALS", SYSCONF, _SC_REALTIME_SIGNALS }, { "_POSIX_REGEXP", SYSCONF, _SC_REGEXP }, { "_POSIX_SAVED_IDS", SYSCONF, _SC_SAVED_IDS }, { "_POSIX_SEMAPHORES", SYSCONF, _SC_SEMAPHORES }, { "_POSIX_SHARED_MEMORY_OBJECTS", SYSCONF, _SC_SHARED_MEMORY_OBJECTS }, { "_POSIX_SHELL", SYSCONF, _SC_SHELL }, { "_POSIX_SPAWN", SYSCONF, _SC_SPAWN }, { "_POSIX_SPIN_LOCKS", SYSCONF, _SC_SPIN_LOCKS }, { "_POSIX_SPORADIC_SERVER", SYSCONF, _SC_SPORADIC_SERVER }, { "_POSIX_SS_REPL_MAX", SYSCONF, _SC_SS_REPL_MAX }, { "_POSIX_SYNCHRONIZED_IO", SYSCONF, _SC_SYNCHRONIZED_IO }, { "_POSIX_THREAD_ATTR_STACKADDR", SYSCONF, _SC_THREAD_ATTR_STACKADDR }, { "_POSIX_THREAD_ATTR_STACKSIZE", SYSCONF, _SC_THREAD_ATTR_STACKSIZE }, { "_POSIX_THREAD_CPUTIME", SYSCONF, _SC_THREAD_CPUTIME }, { "_POSIX_THREAD_PRIO_INHERIT", SYSCONF, _SC_THREAD_PRIO_INHERIT }, { "_POSIX_THREAD_PRIO_PROTECT", SYSCONF, _SC_THREAD_PRIO_PROTECT }, { "_POSIX_THREAD_PRIORITY_SCHEDULING",SYSCONF, _SC_THREAD_PRIORITY_SCHEDULING }, { "_POSIX_THREAD_PROCESS_SHARED", SYSCONF, _SC_THREAD_PROCESS_SHARED }, { "_POSIX_THREAD_ROBUST_PRIO_INHERIT",SYSCONF, _SC_THREAD_ROBUST_PRIO_INHERIT }, { "_POSIX_THREAD_ROBUST_PRIO_PROTECT",SYSCONF, _SC_THREAD_ROBUST_PRIO_PROTECT }, { "_POSIX_THREAD_SAFE_FUNCTIONS", SYSCONF, _SC_THREAD_SAFE_FUNCTIONS }, { "_POSIX_THREAD_SPORADIC_SERVER", SYSCONF, _SC_THREAD_SPORADIC_SERVER }, { "_POSIX_THREADS", SYSCONF, _SC_THREADS }, { "_POSIX_TIMEOUTS", SYSCONF, _SC_TIMEOUTS }, { "_POSIX_TIMERS", SYSCONF, _SC_TIMERS }, { "_POSIX_TRACE", SYSCONF, _SC_TRACE }, { "_POSIX_TRACE_EVENT_FILTER", SYSCONF, _SC_TRACE_EVENT_FILTER }, { "_POSIX_TRACE_EVENT_NAME_MAX", SYSCONF, _SC_TRACE_EVENT_NAME_MAX }, { "_POSIX_TRACE_INHERIT", SYSCONF, _SC_TRACE_INHERIT }, { "_POSIX_TRACE_LOG", SYSCONF, _SC_TRACE_LOG }, { "_POSIX_TRACE_NAME_MAX", SYSCONF, _SC_TRACE_NAME_MAX }, { "_POSIX_TRACE_SYS_MAX", SYSCONF, _SC_TRACE_SYS_MAX }, { "_POSIX_TRACE_USER_EVENT_MAX", SYSCONF, _SC_TRACE_USER_EVENT_MAX }, { "_POSIX_TYPED_MEMORY_OBJECTS", SYSCONF, _SC_TYPED_MEMORY_OBJECTS }, { "_POSIX_VERSION", SYSCONF, _SC_VERSION }, { "_POSIX_V7_ILP32_OFF32", SYSCONF, _SC_V7_ILP32_OFF32 }, { "_POSIX_V7_ILP32_OFFBIG", SYSCONF, _SC_V7_ILP32_OFFBIG }, { "_POSIX_V7_LP64_OFF64", SYSCONF, _SC_V7_LP64_OFF64 }, { "_POSIX_V7_LPBIG_OFFBIG", SYSCONF, _SC_V7_LPBIG_OFFBIG }, { "_POSIX_V6_ILP32_OFF32", SYSCONF, _SC_V6_ILP32_OFF32 }, { "_POSIX_V6_ILP32_OFFBIG", SYSCONF, _SC_V6_ILP32_OFFBIG }, { "_POSIX_V6_LP64_OFF64", SYSCONF, _SC_V6_LP64_OFF64 }, { "_POSIX_V6_LPBIG_OFFBIG", SYSCONF, _SC_V6_LPBIG_OFFBIG }, { "_POSIX2_C_BIND", SYSCONF, _SC_2_C_BIND }, { "_POSIX2_C_DEV", SYSCONF, _SC_2_C_DEV }, { "_POSIX2_CHAR_TERM", SYSCONF, _SC_2_CHAR_TERM }, { "_POSIX2_FORT_DEV", SYSCONF, _SC_2_FORT_DEV }, { "_POSIX2_FORT_RUN", SYSCONF, _SC_2_FORT_RUN }, { "_POSIX2_LOCALEDEF", SYSCONF, _SC_2_LOCALEDEF }, { "_POSIX2_PBS", SYSCONF, _SC_2_PBS }, { "_POSIX2_PBS_ACCOUNTING", SYSCONF, _SC_2_PBS_ACCOUNTING }, { "_POSIX2_PBS_CHECKPOINT", SYSCONF, _SC_2_PBS_CHECKPOINT }, { "_POSIX2_PBS_LOCATE", SYSCONF, _SC_2_PBS_LOCATE }, { "_POSIX2_PBS_MESSAGE", SYSCONF, _SC_2_PBS_MESSAGE }, { "_POSIX2_PBS_TRACK", SYSCONF, _SC_2_PBS_TRACK }, { "_POSIX2_SW_DEV", SYSCONF, _SC_2_SW_DEV }, { "_POSIX2_UPE", SYSCONF, _SC_2_UPE }, { "_POSIX2_VERSION", SYSCONF, _SC_2_VERSION }, { "_XBS5_ILP32_OFF32", SYSCONF, _SC_XBS5_ILP32_OFF32 }, { "_XBS5_ILP32_OFFBIG", SYSCONF, _SC_XBS5_ILP32_OFFBIG }, { "_XBS5_LP64_OFF64", SYSCONF, _SC_XBS5_LP64_OFF64 }, { "_XBS5_LPBIG_OFFBIG", SYSCONF, _SC_XBS5_LPBIG_OFFBIG }, { "_XOPEN_CRYPT", SYSCONF, _SC_XOPEN_CRYPT }, { "_XOPEN_ENH_I18N", SYSCONF, _SC_XOPEN_ENH_I18N }, { "_XOPEN_LEGACY", SYSCONF, _SC_XOPEN_LEGACY }, { "_XOPEN_REALTIME", SYSCONF, _SC_XOPEN_REALTIME }, { "_XOPEN_REALTIME_THREADS", SYSCONF, _SC_XOPEN_REALTIME_THREADS }, { "_XOPEN_SHM", SYSCONF, _SC_XOPEN_SHM }, { "_XOPEN_STREAMS", SYSCONF, _SC_XOPEN_STREAMS }, { "_XOPEN_UNIX", SYSCONF, _SC_XOPEN_UNIX }, { "_XOPEN_UUCP", SYSCONF, _SC_XOPEN_UUCP }, { "_XOPEN_VERSION", SYSCONF, _SC_XOPEN_VERSION }, /* for compatibility with earlier versions */ { "POSIX2_C_BIND", SYSCONF, _SC_2_C_BIND }, { "POSIX2_C_DEV", SYSCONF, _SC_2_C_DEV }, { "POSIX2_CHAR_TERM", SYSCONF, _SC_2_CHAR_TERM }, { "POSIX2_FORT_DEV", SYSCONF, _SC_2_FORT_DEV }, { "POSIX2_FORT_RUN", SYSCONF, _SC_2_FORT_RUN }, { "POSIX2_LOCALEDEF", SYSCONF, _SC_2_LOCALEDEF }, { "POSIX2_PBS", SYSCONF, _SC_2_PBS }, { "POSIX2_PBS_ACCOUNTING", SYSCONF, _SC_2_PBS_ACCOUNTING }, { "POSIX2_PBS_CHECKPOINT", SYSCONF, _SC_2_PBS_CHECKPOINT }, { "POSIX2_PBS_LOCATE", SYSCONF, _SC_2_PBS_LOCATE }, { "POSIX2_PBS_MESSAGE", SYSCONF, _SC_2_PBS_MESSAGE }, { "POSIX2_PBS_TRACK", SYSCONF, _SC_2_PBS_TRACK }, { "POSIX2_SW_DEV", SYSCONF, _SC_2_SW_DEV }, { "POSIX2_UPE", SYSCONF, _SC_2_UPE }, { "POSIX2_VERSION", SYSCONF, _SC_2_VERSION }, /* implementation-specific values */ { "_NPROCESSORS_CONF", SYSCONF, _SC_NPROCESSORS_CONF }, { "_NPROCESSORS_ONLN", SYSCONF, _SC_NPROCESSORS_ONLN }, { "_AVPHYS_PAGES", SYSCONF, _SC_AVPHYS_PAGES }, { "_PHYS_PAGES", SYSCONF, _SC_PHYS_PAGES }, { NULL, CONSTANT, 0L } }; struct spec_variable { const char *name; int valid; }; static const struct spec_variable spec_table[] = { { "POSIX_V7_ILP32_OFF32", 0 }, { "POSIX_V7_ILP32_OFFBIG", 1 }, { "POSIX_V7_LP64_OFF64", 0 }, { "POSIX_V7_LPBIG_OFFBIG", 0 }, { "POSIX_V6_ILP32_OFF32", 0 }, { "POSIX_V6_ILP32_OFFBIG", 1 }, { "POSIX_V6_LP64_OFF64", 0 }, { "POSIX_V6_LPBIG_OFFBIG", 0 }, { "XBS5_ILP32_OFF32", 0 }, { "XBS5_ILP32_OFFBIG", 1 }, { "XBS5_LP64_OFF64", 0 }, { "XBS5_LPBIG_OFFBIG", 0 }, { NULL, 0 }, }; static int a_flag = 0; /* list all variables */ static int v_flag = 0; /* follow given specification */ static void print_longvar (const char *name, long long value) { if (a_flag) printf ("%-35s %lld\n", name, value); else printf ("%lld\n", value); } static void print_strvar (const char *name, const char *sval) { if (a_flag) printf ("%-35s %s\n", name, sval); else printf ("%s\n", sval); } static void printvar (const struct conf_variable *cp, const char *pathname) { size_t slen; char *sval; long val; switch (cp->type) { case CONSTANT: print_longvar (cp->name, cp->value); break; case CONFSTR: errno = 0; slen = confstr ((int) cp->value, NULL, 0); if (slen == 0) { if (errno == 0) print_strvar (cp->name, "undefined"); return; } if ((sval = malloc (slen)) == NULL) error (EXIT_FAILURE, 0, "Can't allocate %zu bytes", slen); errno = 0; if (confstr ((int) cp->value, sval, slen) == 0) print_strvar (cp->name, "undefined"); else print_strvar (cp->name, sval); free (sval); break; case SYSCONF: errno = 0; if ((val = sysconf ((int) cp->value)) == -1) { if (a_flag && errno != 0) return; /* Just skip invalid variables */ print_strvar (cp->name, "undefined"); } else print_longvar (cp->name, val); break; case PATHCONF: errno = 0; if ((val = pathconf (pathname, (int) cp->value)) == -1) { if (a_flag && errno != 0) return; /* Just skip invalid variables */ print_strvar (cp->name, "undefined"); } else print_longvar (cp->name, val); break; } } static void usage (void) { fprintf (stderr, "Usage: %s [-v specification] variable_name [pathname]\n" " %s -a [pathname]\n", program_invocation_short_name, program_invocation_short_name); exit (EXIT_FAILURE); } int main (int argc, char **argv) { int ch; const struct conf_variable *cp; const struct spec_variable *sp; const char *varname, *pathname; int found; setlocale (LC_ALL, ""); while ((ch = getopt (argc, argv, "av")) != -1) { switch (ch) { case 'a': a_flag = 1; break; case 'v': v_flag = 1; break; case '?': default: usage (); } } argc -= optind; argv += optind; if (v_flag) { if (a_flag || argc < 2) usage (); for (sp = spec_table; sp->name != NULL; sp++) { if (strcmp (argv[0], sp->name) == 0) { if (sp->valid != 1) error (EXIT_FAILURE, 0, "unsupported specification \"%s\"", argv[0]); break; } } if (sp->name == NULL) error (EXIT_FAILURE, 0, "unknown specification \"%s\"", argv[0]); argc--; argv++; } if (!a_flag) { if (argc == 0) usage (); varname = argv[0]; argc--; argv++; } else varname = NULL; if (argc > 1) usage (); pathname = argv[0]; /* may be NULL */ found = 0; for (cp = conf_table; cp->name != NULL; cp++) { if (a_flag || strcmp (varname, cp->name) == 0) { /* LINTED weird expression */ if ((cp->type == PATHCONF) == (pathname != NULL)) { printvar (cp, pathname); found = 1; } else if (!a_flag) usage (); } } if (!a_flag && !found) error (EXIT_FAILURE, 0, "Unrecognized variable `%s'", varname); fflush (stdout); return ferror (stdout) ? EXIT_FAILURE : EXIT_SUCCESS; }