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glibc/posix/getconf.c
Paul Eggert 634b5ebac6 Update copyright dates not handled by scripts/update-copyrights. 
I've updated copyright dates in glibc for 2022.  This is the patch for
the changes not generated by scripts/update-copyrights and subsequent
build / regeneration of generated files.  As well as the usual annual
updates, mainly dates in --version output (minus csu/version.c which
previously had to be handled manually but is now successfully updated
by update-copyrights), there is a small change to the copyright notice
in NEWS which should let NEWS get updated automatically next year.

Please remember to include 2022 in the dates for any new files added
in future (which means updating any existing uncommitted patches you
have that add new files to use the new copyright dates in them).
2022-01-01 11:42:26 -08:00

711 lines
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/* Copyright (C) 1991-2022 Free Software Foundation, Inc.
This file is part of the GNU C Library.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see <https://www.gnu.org/licenses/>. */
#include <unistd.h>
#include <errno.h>
#include <error.h>
#include <libintl.h>
#include <locale.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include "../version.h"
#define PACKAGE _libc_intl_domainname
#define NEED_SPEC_ARRAY 1
#include <posix-conf-vars.h>
/* If all of the environments are defined in environments.h, then we don't need
to bother with doing a runtime check for a specific environment. */
#if (defined _SC_V6_ILP32_OFF32 \
&& defined _SC_V7_LPBIG_OFFBIG \
&& defined _SC_XBS5_LP64_OFF64 \
&& defined _SC_V6_LP64_OFF64 \
&& defined _SC_V7_ILP32_OFFBIG \
&& defined _SC_V6_LPBIG_OFFBIG \
&& defined _SC_V7_LP64_OFF64 \
&& defined _SC_V7_ILP32_OFF32 \
&& defined _SC_XBS5_LPBIG_OFFBIG \
&& defined _SC_XBS5_ILP32_OFFBIG \
&& defined _SC_V6_ILP32_OFFBIG \
&& defined _SC_XBS5_ILP32_OFF32)
# define ALL_ENVIRONMENTS_DEFINED 1
#endif
struct conf
{
const char *name;
const int call_name;
const enum { SYSCONF, CONFSTR, PATHCONF } call;
};
static const struct conf vars[] =
{
{ "LINK_MAX", _PC_LINK_MAX, PATHCONF },
{ "_POSIX_LINK_MAX", _PC_LINK_MAX, PATHCONF },
{ "MAX_CANON", _PC_MAX_CANON, PATHCONF },
{ "_POSIX_MAX_CANON", _PC_MAX_CANON, PATHCONF },
{ "MAX_INPUT", _PC_MAX_INPUT, PATHCONF },
{ "_POSIX_MAX_INPUT", _PC_MAX_INPUT, PATHCONF },
{ "NAME_MAX", _PC_NAME_MAX, PATHCONF },
{ "_POSIX_NAME_MAX", _PC_NAME_MAX, PATHCONF },
{ "PATH_MAX", _PC_PATH_MAX, PATHCONF },
{ "_POSIX_PATH_MAX", _PC_PATH_MAX, PATHCONF },
{ "PIPE_BUF", _PC_PIPE_BUF, PATHCONF },
{ "_POSIX_PIPE_BUF", _PC_PIPE_BUF, PATHCONF },
{ "SOCK_MAXBUF", _PC_SOCK_MAXBUF, PATHCONF },
{ "_POSIX_ASYNC_IO", _PC_ASYNC_IO, PATHCONF },
{ "_POSIX_CHOWN_RESTRICTED", _PC_CHOWN_RESTRICTED, PATHCONF },
{ "_POSIX_NO_TRUNC", _PC_NO_TRUNC, PATHCONF },
{ "_POSIX_PRIO_IO", _PC_PRIO_IO, PATHCONF },
{ "_POSIX_SYNC_IO", _PC_SYNC_IO, PATHCONF },
{ "_POSIX_VDISABLE", _PC_VDISABLE, PATHCONF },
{ "ARG_MAX", _SC_ARG_MAX, SYSCONF },
{ "ATEXIT_MAX", _SC_ATEXIT_MAX, SYSCONF },
{ "CHAR_BIT", _SC_CHAR_BIT, SYSCONF },
{ "CHAR_MAX", _SC_CHAR_MAX, SYSCONF },
{ "CHAR_MIN", _SC_CHAR_MIN, SYSCONF },
{ "CHILD_MAX", _SC_CHILD_MAX, SYSCONF },
{ "CLK_TCK", _SC_CLK_TCK, SYSCONF },
{ "INT_MAX", _SC_INT_MAX, SYSCONF },
{ "INT_MIN", _SC_INT_MIN, SYSCONF },
{ "IOV_MAX", _SC_UIO_MAXIOV, SYSCONF },
{ "LOGNAME_MAX", _SC_LOGIN_NAME_MAX, SYSCONF },
{ "LONG_BIT", _SC_LONG_BIT, SYSCONF },
{ "MB_LEN_MAX", _SC_MB_LEN_MAX, SYSCONF },
{ "NGROUPS_MAX", _SC_NGROUPS_MAX, SYSCONF },
{ "NL_ARGMAX", _SC_NL_ARGMAX, SYSCONF },
{ "NL_LANGMAX", _SC_NL_LANGMAX, SYSCONF },
{ "NL_MSGMAX", _SC_NL_MSGMAX, SYSCONF },
{ "NL_NMAX", _SC_NL_NMAX, SYSCONF },
{ "NL_SETMAX", _SC_NL_SETMAX, SYSCONF },
{ "NL_TEXTMAX", _SC_NL_TEXTMAX, SYSCONF },
{ "NSS_BUFLEN_GROUP", _SC_GETGR_R_SIZE_MAX, SYSCONF },
{ "NSS_BUFLEN_PASSWD", _SC_GETPW_R_SIZE_MAX, SYSCONF },
{ "NZERO", _SC_NZERO, SYSCONF },
{ "OPEN_MAX", _SC_OPEN_MAX, SYSCONF },
{ "PAGESIZE", _SC_PAGESIZE, SYSCONF },
{ "PAGE_SIZE", _SC_PAGESIZE, SYSCONF },
{ "PASS_MAX", _SC_PASS_MAX, SYSCONF },
{ "PTHREAD_DESTRUCTOR_ITERATIONS", _SC_THREAD_DESTRUCTOR_ITERATIONS, SYSCONF },
{ "PTHREAD_KEYS_MAX", _SC_THREAD_KEYS_MAX, SYSCONF },
{ "PTHREAD_STACK_MIN", _SC_THREAD_STACK_MIN, SYSCONF },
{ "PTHREAD_THREADS_MAX", _SC_THREAD_THREADS_MAX, SYSCONF },
{ "SCHAR_MAX", _SC_SCHAR_MAX, SYSCONF },
{ "SCHAR_MIN", _SC_SCHAR_MIN, SYSCONF },
{ "SHRT_MAX", _SC_SHRT_MAX, SYSCONF },
{ "SHRT_MIN", _SC_SHRT_MIN, SYSCONF },
{ "SSIZE_MAX", _SC_SSIZE_MAX, SYSCONF },
{ "TTY_NAME_MAX", _SC_TTY_NAME_MAX, SYSCONF },
{ "TZNAME_MAX", _SC_TZNAME_MAX, SYSCONF },
{ "UCHAR_MAX", _SC_UCHAR_MAX, SYSCONF },
{ "UINT_MAX", _SC_UINT_MAX, SYSCONF },
{ "UIO_MAXIOV", _SC_UIO_MAXIOV, SYSCONF },
{ "ULONG_MAX", _SC_ULONG_MAX, SYSCONF },
{ "USHRT_MAX", _SC_USHRT_MAX, SYSCONF },
{ "WORD_BIT", _SC_WORD_BIT, SYSCONF },
{ "_AVPHYS_PAGES", _SC_AVPHYS_PAGES, SYSCONF },
{ "_NPROCESSORS_CONF", _SC_NPROCESSORS_CONF, SYSCONF },
{ "_NPROCESSORS_ONLN", _SC_NPROCESSORS_ONLN, SYSCONF },
{ "_PHYS_PAGES", _SC_PHYS_PAGES, SYSCONF },
{ "_POSIX_ARG_MAX", _SC_ARG_MAX, SYSCONF },
{ "_POSIX_ASYNCHRONOUS_IO", _SC_ASYNCHRONOUS_IO, SYSCONF },
{ "_POSIX_CHILD_MAX", _SC_CHILD_MAX, SYSCONF },
{ "_POSIX_FSYNC", _SC_FSYNC, SYSCONF },
{ "_POSIX_JOB_CONTROL", _SC_JOB_CONTROL, SYSCONF },
{ "_POSIX_MAPPED_FILES", _SC_MAPPED_FILES, SYSCONF },
{ "_POSIX_MEMLOCK", _SC_MEMLOCK, SYSCONF },
{ "_POSIX_MEMLOCK_RANGE", _SC_MEMLOCK_RANGE, SYSCONF },
{ "_POSIX_MEMORY_PROTECTION", _SC_MEMORY_PROTECTION, SYSCONF },
{ "_POSIX_MESSAGE_PASSING", _SC_MESSAGE_PASSING, SYSCONF },
{ "_POSIX_NGROUPS_MAX", _SC_NGROUPS_MAX, SYSCONF },
{ "_POSIX_OPEN_MAX", _SC_OPEN_MAX, SYSCONF },
{ "_POSIX_PII", _SC_PII, SYSCONF },
{ "_POSIX_PII_INTERNET", _SC_PII_INTERNET, SYSCONF },
{ "_POSIX_PII_INTERNET_DGRAM", _SC_PII_INTERNET_DGRAM, SYSCONF },
{ "_POSIX_PII_INTERNET_STREAM", _SC_PII_INTERNET_STREAM, SYSCONF },
{ "_POSIX_PII_OSI", _SC_PII_OSI, SYSCONF },
{ "_POSIX_PII_OSI_CLTS", _SC_PII_OSI_CLTS, SYSCONF },
{ "_POSIX_PII_OSI_COTS", _SC_PII_OSI_COTS, SYSCONF },
{ "_POSIX_PII_OSI_M", _SC_PII_OSI_M, SYSCONF },
{ "_POSIX_PII_SOCKET", _SC_PII_SOCKET, SYSCONF },
{ "_POSIX_PII_XTI", _SC_PII_XTI, SYSCONF },
{ "_POSIX_POLL", _SC_POLL, SYSCONF },
{ "_POSIX_PRIORITIZED_IO", _SC_PRIORITIZED_IO, SYSCONF },
{ "_POSIX_PRIORITY_SCHEDULING", _SC_PRIORITY_SCHEDULING, SYSCONF },
{ "_POSIX_REALTIME_SIGNALS", _SC_REALTIME_SIGNALS, SYSCONF },
{ "_POSIX_SAVED_IDS", _SC_SAVED_IDS, SYSCONF },
{ "_POSIX_SELECT", _SC_SELECT, SYSCONF },
{ "_POSIX_SEMAPHORES", _SC_SEMAPHORES, SYSCONF },
{ "_POSIX_SHARED_MEMORY_OBJECTS", _SC_SHARED_MEMORY_OBJECTS, SYSCONF },
{ "_POSIX_SSIZE_MAX", _SC_SSIZE_MAX, SYSCONF },
{ "_POSIX_STREAM_MAX", _SC_STREAM_MAX, SYSCONF },
{ "_POSIX_SYNCHRONIZED_IO", _SC_SYNCHRONIZED_IO, SYSCONF },
{ "_POSIX_THREADS", _SC_THREADS, SYSCONF },
{ "_POSIX_THREAD_ATTR_STACKADDR", _SC_THREAD_ATTR_STACKADDR, SYSCONF },
{ "_POSIX_THREAD_ATTR_STACKSIZE", _SC_THREAD_ATTR_STACKSIZE, SYSCONF },
{ "_POSIX_THREAD_PRIORITY_SCHEDULING", _SC_THREAD_PRIORITY_SCHEDULING, SYSCONF },
{ "_POSIX_THREAD_PRIO_INHERIT", _SC_THREAD_PRIO_INHERIT, SYSCONF },
{ "_POSIX_THREAD_PRIO_PROTECT", _SC_THREAD_PRIO_PROTECT, SYSCONF },
{ "_POSIX_THREAD_ROBUST_PRIO_INHERIT", _SC_THREAD_ROBUST_PRIO_INHERIT,
SYSCONF },
{ "_POSIX_THREAD_ROBUST_PRIO_PROTECT", _SC_THREAD_ROBUST_PRIO_PROTECT,
SYSCONF },
{ "_POSIX_THREAD_PROCESS_SHARED", _SC_THREAD_PROCESS_SHARED, SYSCONF },
{ "_POSIX_THREAD_SAFE_FUNCTIONS", _SC_THREAD_SAFE_FUNCTIONS, SYSCONF },
{ "_POSIX_TIMERS", _SC_TIMERS, SYSCONF },
{ "TIMER_MAX", _SC_TIMER_MAX, SYSCONF },
{ "_POSIX_TZNAME_MAX", _SC_TZNAME_MAX, SYSCONF },
{ "_POSIX_VERSION", _SC_VERSION, SYSCONF },
{ "_T_IOV_MAX", _SC_T_IOV_MAX, SYSCONF },
{ "_XOPEN_CRYPT", _SC_XOPEN_CRYPT, SYSCONF },
{ "_XOPEN_ENH_I18N", _SC_XOPEN_ENH_I18N, SYSCONF },
{ "_XOPEN_LEGACY", _SC_XOPEN_LEGACY, SYSCONF },
{ "_XOPEN_REALTIME", _SC_XOPEN_REALTIME, SYSCONF },
{ "_XOPEN_REALTIME_THREADS", _SC_XOPEN_REALTIME_THREADS, SYSCONF },
{ "_XOPEN_SHM", _SC_XOPEN_SHM, SYSCONF },
{ "_XOPEN_UNIX", _SC_XOPEN_UNIX, SYSCONF },
{ "_XOPEN_VERSION", _SC_XOPEN_VERSION, SYSCONF },
{ "_XOPEN_XCU_VERSION", _SC_XOPEN_XCU_VERSION, SYSCONF },
{ "_XOPEN_XPG2", _SC_XOPEN_XPG2, SYSCONF },
{ "_XOPEN_XPG3", _SC_XOPEN_XPG3, SYSCONF },
{ "_XOPEN_XPG4", _SC_XOPEN_XPG4, SYSCONF },
/* POSIX.2 */
{ "BC_BASE_MAX", _SC_BC_BASE_MAX, SYSCONF },
{ "BC_DIM_MAX", _SC_BC_DIM_MAX, SYSCONF },
{ "BC_SCALE_MAX", _SC_BC_SCALE_MAX, SYSCONF },
{ "BC_STRING_MAX", _SC_BC_STRING_MAX, SYSCONF },
{ "CHARCLASS_NAME_MAX", _SC_CHARCLASS_NAME_MAX, SYSCONF },
{ "COLL_WEIGHTS_MAX", _SC_COLL_WEIGHTS_MAX, SYSCONF },
{ "EQUIV_CLASS_MAX", _SC_EQUIV_CLASS_MAX, SYSCONF },
{ "EXPR_NEST_MAX", _SC_EXPR_NEST_MAX, SYSCONF },
{ "LINE_MAX", _SC_LINE_MAX, SYSCONF },
{ "POSIX2_BC_BASE_MAX", _SC_BC_BASE_MAX, SYSCONF },
{ "POSIX2_BC_DIM_MAX", _SC_BC_DIM_MAX, SYSCONF },
{ "POSIX2_BC_SCALE_MAX", _SC_BC_SCALE_MAX, SYSCONF },
{ "POSIX2_BC_STRING_MAX", _SC_BC_STRING_MAX, SYSCONF },
{ "POSIX2_CHAR_TERM", _SC_2_CHAR_TERM, SYSCONF },
{ "POSIX2_COLL_WEIGHTS_MAX", _SC_COLL_WEIGHTS_MAX, SYSCONF },
{ "POSIX2_C_BIND", _SC_2_C_BIND, SYSCONF },
{ "POSIX2_C_DEV", _SC_2_C_DEV, SYSCONF },
{ "POSIX2_C_VERSION", _SC_2_C_VERSION, SYSCONF },
{ "POSIX2_EXPR_NEST_MAX", _SC_EXPR_NEST_MAX, SYSCONF },
{ "POSIX2_FORT_DEV", _SC_2_FORT_DEV, SYSCONF },
{ "POSIX2_FORT_RUN", _SC_2_FORT_RUN, SYSCONF },
{ "_POSIX2_LINE_MAX", _SC_LINE_MAX, SYSCONF },
{ "POSIX2_LINE_MAX", _SC_LINE_MAX, SYSCONF },
{ "POSIX2_LOCALEDEF", _SC_2_LOCALEDEF, SYSCONF },
{ "POSIX2_RE_DUP_MAX", _SC_RE_DUP_MAX, SYSCONF },
{ "POSIX2_SW_DEV", _SC_2_SW_DEV, SYSCONF },
{ "POSIX2_UPE", _SC_2_UPE, SYSCONF },
{ "POSIX2_VERSION", _SC_2_VERSION, SYSCONF },
{ "RE_DUP_MAX", _SC_RE_DUP_MAX, SYSCONF },
{ "PATH", _CS_PATH, CONFSTR },
{ "CS_PATH", _CS_PATH, CONFSTR },
/* LFS */
{ "LFS_CFLAGS", _CS_LFS_CFLAGS, CONFSTR },
{ "LFS_LDFLAGS", _CS_LFS_LDFLAGS, CONFSTR },
{ "LFS_LIBS", _CS_LFS_LIBS, CONFSTR },
{ "LFS_LINTFLAGS", _CS_LFS_LINTFLAGS, CONFSTR },
{ "LFS64_CFLAGS", _CS_LFS64_CFLAGS, CONFSTR },
{ "LFS64_LDFLAGS", _CS_LFS64_LDFLAGS, CONFSTR },
{ "LFS64_LIBS", _CS_LFS64_LIBS, CONFSTR },
{ "LFS64_LINTFLAGS", _CS_LFS64_LINTFLAGS, CONFSTR },
/* Programming environments. */
{ "_XBS5_WIDTH_RESTRICTED_ENVS", _CS_V5_WIDTH_RESTRICTED_ENVS, CONFSTR },
{ "XBS5_WIDTH_RESTRICTED_ENVS", _CS_V5_WIDTH_RESTRICTED_ENVS, CONFSTR },
{ "_XBS5_ILP32_OFF32", _SC_XBS5_ILP32_OFF32, SYSCONF },
{ "XBS5_ILP32_OFF32_CFLAGS", _CS_XBS5_ILP32_OFF32_CFLAGS, CONFSTR },
{ "XBS5_ILP32_OFF32_LDFLAGS", _CS_XBS5_ILP32_OFF32_LDFLAGS, CONFSTR },
{ "XBS5_ILP32_OFF32_LIBS", _CS_XBS5_ILP32_OFF32_LIBS, CONFSTR },
{ "XBS5_ILP32_OFF32_LINTFLAGS", _CS_XBS5_ILP32_OFF32_LINTFLAGS, CONFSTR },
{ "_XBS5_ILP32_OFFBIG", _SC_XBS5_ILP32_OFFBIG, SYSCONF },
{ "XBS5_ILP32_OFFBIG_CFLAGS", _CS_XBS5_ILP32_OFFBIG_CFLAGS, CONFSTR },
{ "XBS5_ILP32_OFFBIG_LDFLAGS", _CS_XBS5_ILP32_OFFBIG_LDFLAGS, CONFSTR },
{ "XBS5_ILP32_OFFBIG_LIBS", _CS_XBS5_ILP32_OFFBIG_LIBS, CONFSTR },
{ "XBS5_ILP32_OFFBIG_LINTFLAGS", _CS_XBS5_ILP32_OFFBIG_LINTFLAGS, CONFSTR },
{ "_XBS5_LP64_OFF64", _SC_XBS5_LP64_OFF64, SYSCONF },
{ "XBS5_LP64_OFF64_CFLAGS", _CS_XBS5_LP64_OFF64_CFLAGS, CONFSTR },
{ "XBS5_LP64_OFF64_LDFLAGS", _CS_XBS5_LP64_OFF64_LDFLAGS, CONFSTR },
{ "XBS5_LP64_OFF64_LIBS", _CS_XBS5_LP64_OFF64_LIBS, CONFSTR },
{ "XBS5_LP64_OFF64_LINTFLAGS", _CS_XBS5_LP64_OFF64_LINTFLAGS, CONFSTR },
{ "_XBS5_LPBIG_OFFBIG", _SC_XBS5_LPBIG_OFFBIG, SYSCONF },
{ "XBS5_LPBIG_OFFBIG_CFLAGS", _CS_XBS5_LPBIG_OFFBIG_CFLAGS, CONFSTR },
{ "XBS5_LPBIG_OFFBIG_LDFLAGS", _CS_XBS5_LPBIG_OFFBIG_LDFLAGS, CONFSTR },
{ "XBS5_LPBIG_OFFBIG_LIBS", _CS_XBS5_LPBIG_OFFBIG_LIBS, CONFSTR },
{ "XBS5_LPBIG_OFFBIG_LINTFLAGS", _CS_XBS5_LPBIG_OFFBIG_LINTFLAGS, CONFSTR },
{ "_POSIX_V6_ILP32_OFF32", _SC_V6_ILP32_OFF32, SYSCONF },
{ "POSIX_V6_ILP32_OFF32_CFLAGS", _CS_POSIX_V6_ILP32_OFF32_CFLAGS, CONFSTR },
{ "POSIX_V6_ILP32_OFF32_LDFLAGS", _CS_POSIX_V6_ILP32_OFF32_LDFLAGS, CONFSTR },
{ "POSIX_V6_ILP32_OFF32_LIBS", _CS_POSIX_V6_ILP32_OFF32_LIBS, CONFSTR },
{ "POSIX_V6_ILP32_OFF32_LINTFLAGS", _CS_POSIX_V6_ILP32_OFF32_LINTFLAGS, CONFSTR },
{ "_POSIX_V6_WIDTH_RESTRICTED_ENVS", _CS_V6_WIDTH_RESTRICTED_ENVS, CONFSTR },
{ "POSIX_V6_WIDTH_RESTRICTED_ENVS", _CS_V6_WIDTH_RESTRICTED_ENVS, CONFSTR },
{ "_POSIX_V6_ILP32_OFFBIG", _SC_V6_ILP32_OFFBIG, SYSCONF },
{ "POSIX_V6_ILP32_OFFBIG_CFLAGS", _CS_POSIX_V6_ILP32_OFFBIG_CFLAGS, CONFSTR },
{ "POSIX_V6_ILP32_OFFBIG_LDFLAGS", _CS_POSIX_V6_ILP32_OFFBIG_LDFLAGS, CONFSTR },
{ "POSIX_V6_ILP32_OFFBIG_LIBS", _CS_POSIX_V6_ILP32_OFFBIG_LIBS, CONFSTR },
{ "POSIX_V6_ILP32_OFFBIG_LINTFLAGS", _CS_POSIX_V6_ILP32_OFFBIG_LINTFLAGS, CONFSTR },
{ "_POSIX_V6_LP64_OFF64", _SC_V6_LP64_OFF64, SYSCONF },
{ "POSIX_V6_LP64_OFF64_CFLAGS", _CS_POSIX_V6_LP64_OFF64_CFLAGS, CONFSTR },
{ "POSIX_V6_LP64_OFF64_LDFLAGS", _CS_POSIX_V6_LP64_OFF64_LDFLAGS, CONFSTR },
{ "POSIX_V6_LP64_OFF64_LIBS", _CS_POSIX_V6_LP64_OFF64_LIBS, CONFSTR },
{ "POSIX_V6_LP64_OFF64_LINTFLAGS", _CS_POSIX_V6_LP64_OFF64_LINTFLAGS, CONFSTR },
{ "_POSIX_V6_LPBIG_OFFBIG", _SC_V6_LPBIG_OFFBIG, SYSCONF },
{ "POSIX_V6_LPBIG_OFFBIG_CFLAGS", _CS_POSIX_V6_LPBIG_OFFBIG_CFLAGS, CONFSTR },
{ "POSIX_V6_LPBIG_OFFBIG_LDFLAGS", _CS_POSIX_V6_LPBIG_OFFBIG_LDFLAGS, CONFSTR },
{ "POSIX_V6_LPBIG_OFFBIG_LIBS", _CS_POSIX_V6_LPBIG_OFFBIG_LIBS, CONFSTR },
{ "POSIX_V6_LPBIG_OFFBIG_LINTFLAGS", _CS_POSIX_V6_LPBIG_OFFBIG_LINTFLAGS, CONFSTR },
{ "_POSIX_V7_ILP32_OFF32", _SC_V7_ILP32_OFF32, SYSCONF },
{ "POSIX_V7_ILP32_OFF32_CFLAGS", _CS_POSIX_V7_ILP32_OFF32_CFLAGS, CONFSTR },
{ "POSIX_V7_ILP32_OFF32_LDFLAGS", _CS_POSIX_V7_ILP32_OFF32_LDFLAGS, CONFSTR },
{ "POSIX_V7_ILP32_OFF32_LIBS", _CS_POSIX_V7_ILP32_OFF32_LIBS, CONFSTR },
{ "POSIX_V7_ILP32_OFF32_LINTFLAGS", _CS_POSIX_V7_ILP32_OFF32_LINTFLAGS, CONFSTR },
{ "_POSIX_V7_WIDTH_RESTRICTED_ENVS", _CS_V7_WIDTH_RESTRICTED_ENVS, CONFSTR },
{ "POSIX_V7_WIDTH_RESTRICTED_ENVS", _CS_V7_WIDTH_RESTRICTED_ENVS, CONFSTR },
{ "_POSIX_V7_ILP32_OFFBIG", _SC_V7_ILP32_OFFBIG, SYSCONF },
{ "POSIX_V7_ILP32_OFFBIG_CFLAGS", _CS_POSIX_V7_ILP32_OFFBIG_CFLAGS, CONFSTR },
{ "POSIX_V7_ILP32_OFFBIG_LDFLAGS", _CS_POSIX_V7_ILP32_OFFBIG_LDFLAGS, CONFSTR },
{ "POSIX_V7_ILP32_OFFBIG_LIBS", _CS_POSIX_V7_ILP32_OFFBIG_LIBS, CONFSTR },
{ "POSIX_V7_ILP32_OFFBIG_LINTFLAGS", _CS_POSIX_V7_ILP32_OFFBIG_LINTFLAGS, CONFSTR },
{ "_POSIX_V7_LP64_OFF64", _SC_V7_LP64_OFF64, SYSCONF },
{ "POSIX_V7_LP64_OFF64_CFLAGS", _CS_POSIX_V7_LP64_OFF64_CFLAGS, CONFSTR },
{ "POSIX_V7_LP64_OFF64_LDFLAGS", _CS_POSIX_V7_LP64_OFF64_LDFLAGS, CONFSTR },
{ "POSIX_V7_LP64_OFF64_LIBS", _CS_POSIX_V7_LP64_OFF64_LIBS, CONFSTR },
{ "POSIX_V7_LP64_OFF64_LINTFLAGS", _CS_POSIX_V7_LP64_OFF64_LINTFLAGS, CONFSTR },
{ "_POSIX_V7_LPBIG_OFFBIG", _SC_V7_LPBIG_OFFBIG, SYSCONF },
{ "POSIX_V7_LPBIG_OFFBIG_CFLAGS", _CS_POSIX_V7_LPBIG_OFFBIG_CFLAGS, CONFSTR },
{ "POSIX_V7_LPBIG_OFFBIG_LDFLAGS", _CS_POSIX_V7_LPBIG_OFFBIG_LDFLAGS, CONFSTR },
{ "POSIX_V7_LPBIG_OFFBIG_LIBS", _CS_POSIX_V7_LPBIG_OFFBIG_LIBS, CONFSTR },
{ "POSIX_V7_LPBIG_OFFBIG_LINTFLAGS", _CS_POSIX_V7_LPBIG_OFFBIG_LINTFLAGS, CONFSTR },
{ "_POSIX_ADVISORY_INFO", _SC_ADVISORY_INFO, SYSCONF },
{ "_POSIX_BARRIERS", _SC_BARRIERS, SYSCONF },
{ "_POSIX_BASE", _SC_BASE, SYSCONF },
{ "_POSIX_C_LANG_SUPPORT", _SC_C_LANG_SUPPORT, SYSCONF },
{ "_POSIX_C_LANG_SUPPORT_R", _SC_C_LANG_SUPPORT_R, SYSCONF },
{ "_POSIX_CLOCK_SELECTION", _SC_CLOCK_SELECTION, SYSCONF },
{ "_POSIX_CPUTIME", _SC_CPUTIME, SYSCONF },
{ "_POSIX_THREAD_CPUTIME", _SC_THREAD_CPUTIME, SYSCONF },
{ "_POSIX_DEVICE_SPECIFIC", _SC_DEVICE_SPECIFIC, SYSCONF },
{ "_POSIX_DEVICE_SPECIFIC_R", _SC_DEVICE_SPECIFIC_R, SYSCONF },
{ "_POSIX_FD_MGMT", _SC_FD_MGMT, SYSCONF },
{ "_POSIX_FIFO", _SC_FIFO, SYSCONF },
{ "_POSIX_PIPE", _SC_PIPE, SYSCONF },
{ "_POSIX_FILE_ATTRIBUTES", _SC_FILE_ATTRIBUTES, SYSCONF },
{ "_POSIX_FILE_LOCKING", _SC_FILE_LOCKING, SYSCONF },
{ "_POSIX_FILE_SYSTEM", _SC_FILE_SYSTEM, SYSCONF },
{ "_POSIX_MONOTONIC_CLOCK", _SC_MONOTONIC_CLOCK, SYSCONF },
{ "_POSIX_MULTI_PROCESS", _SC_MULTI_PROCESS, SYSCONF },
{ "_POSIX_SINGLE_PROCESS", _SC_SINGLE_PROCESS, SYSCONF },
{ "_POSIX_NETWORKING", _SC_NETWORKING, SYSCONF },
{ "_POSIX_READER_WRITER_LOCKS", _SC_READER_WRITER_LOCKS, SYSCONF },
{ "_POSIX_SPIN_LOCKS", _SC_SPIN_LOCKS, SYSCONF },
{ "_POSIX_REGEXP", _SC_REGEXP, SYSCONF },
{ "_REGEX_VERSION", _SC_REGEX_VERSION, SYSCONF },
{ "_POSIX_SHELL", _SC_SHELL, SYSCONF },
{ "_POSIX_SIGNALS", _SC_SIGNALS, SYSCONF },
{ "_POSIX_SPAWN", _SC_SPAWN, SYSCONF },
{ "_POSIX_SPORADIC_SERVER", _SC_SPORADIC_SERVER, SYSCONF },
{ "_POSIX_THREAD_SPORADIC_SERVER", _SC_THREAD_SPORADIC_SERVER, SYSCONF },
{ "_POSIX_SYSTEM_DATABASE", _SC_SYSTEM_DATABASE, SYSCONF },
{ "_POSIX_SYSTEM_DATABASE_R", _SC_SYSTEM_DATABASE_R, SYSCONF },
{ "_POSIX_TIMEOUTS", _SC_TIMEOUTS, SYSCONF },
{ "_POSIX_TYPED_MEMORY_OBJECTS", _SC_TYPED_MEMORY_OBJECTS, SYSCONF },
{ "_POSIX_USER_GROUPS", _SC_USER_GROUPS, SYSCONF },
{ "_POSIX_USER_GROUPS_R", _SC_USER_GROUPS_R, SYSCONF },
{ "POSIX2_PBS", _SC_2_PBS, SYSCONF },
{ "POSIX2_PBS_ACCOUNTING", _SC_2_PBS_ACCOUNTING, SYSCONF },
{ "POSIX2_PBS_LOCATE", _SC_2_PBS_LOCATE, SYSCONF },
{ "POSIX2_PBS_TRACK", _SC_2_PBS_TRACK, SYSCONF },
{ "POSIX2_PBS_MESSAGE", _SC_2_PBS_MESSAGE, SYSCONF },
{ "SYMLOOP_MAX", _SC_SYMLOOP_MAX, SYSCONF },
{ "STREAM_MAX", _SC_STREAM_MAX, SYSCONF },
{ "AIO_LISTIO_MAX", _SC_AIO_LISTIO_MAX, SYSCONF },
{ "AIO_MAX", _SC_AIO_MAX, SYSCONF },
{ "AIO_PRIO_DELTA_MAX", _SC_AIO_PRIO_DELTA_MAX, SYSCONF },
{ "DELAYTIMER_MAX", _SC_DELAYTIMER_MAX, SYSCONF },
{ "HOST_NAME_MAX", _SC_HOST_NAME_MAX, SYSCONF },
{ "LOGIN_NAME_MAX", _SC_LOGIN_NAME_MAX, SYSCONF },
{ "MQ_OPEN_MAX", _SC_MQ_OPEN_MAX, SYSCONF },
{ "MQ_PRIO_MAX", _SC_MQ_PRIO_MAX, SYSCONF },
{ "_POSIX_DEVICE_IO", _SC_DEVICE_IO, SYSCONF },
{ "_POSIX_TRACE", _SC_TRACE, SYSCONF },
{ "_POSIX_TRACE_EVENT_FILTER", _SC_TRACE_EVENT_FILTER, SYSCONF },
{ "_POSIX_TRACE_INHERIT", _SC_TRACE_INHERIT, SYSCONF },
{ "_POSIX_TRACE_LOG", _SC_TRACE_LOG, SYSCONF },
{ "RTSIG_MAX", _SC_RTSIG_MAX, SYSCONF },
{ "SEM_NSEMS_MAX", _SC_SEM_NSEMS_MAX, SYSCONF },
{ "SEM_VALUE_MAX", _SC_SEM_VALUE_MAX, SYSCONF },
{ "SIGQUEUE_MAX", _SC_SIGQUEUE_MAX, SYSCONF },
{ "FILESIZEBITS", _PC_FILESIZEBITS, PATHCONF },
{ "POSIX_ALLOC_SIZE_MIN", _PC_ALLOC_SIZE_MIN, PATHCONF },
{ "POSIX_REC_INCR_XFER_SIZE", _PC_REC_INCR_XFER_SIZE, PATHCONF },
{ "POSIX_REC_MAX_XFER_SIZE", _PC_REC_MAX_XFER_SIZE, PATHCONF },
{ "POSIX_REC_MIN_XFER_SIZE", _PC_REC_MIN_XFER_SIZE, PATHCONF },
{ "POSIX_REC_XFER_ALIGN", _PC_REC_XFER_ALIGN, PATHCONF },
{ "SYMLINK_MAX", _PC_SYMLINK_MAX, PATHCONF },
{ "GNU_LIBC_VERSION", _CS_GNU_LIBC_VERSION, CONFSTR },
{ "GNU_LIBPTHREAD_VERSION", _CS_GNU_LIBPTHREAD_VERSION, CONFSTR },
{ "POSIX2_SYMLINKS", _PC_2_SYMLINKS, PATHCONF },
{ "LEVEL1_ICACHE_SIZE", _SC_LEVEL1_ICACHE_SIZE, SYSCONF },
{ "LEVEL1_ICACHE_ASSOC", _SC_LEVEL1_ICACHE_ASSOC, SYSCONF },
{ "LEVEL1_ICACHE_LINESIZE", _SC_LEVEL1_ICACHE_LINESIZE, SYSCONF },
{ "LEVEL1_DCACHE_SIZE", _SC_LEVEL1_DCACHE_SIZE, SYSCONF },
{ "LEVEL1_DCACHE_ASSOC", _SC_LEVEL1_DCACHE_ASSOC, SYSCONF },
{ "LEVEL1_DCACHE_LINESIZE", _SC_LEVEL1_DCACHE_LINESIZE, SYSCONF },
{ "LEVEL2_CACHE_SIZE", _SC_LEVEL2_CACHE_SIZE, SYSCONF },
{ "LEVEL2_CACHE_ASSOC", _SC_LEVEL2_CACHE_ASSOC, SYSCONF },
{ "LEVEL2_CACHE_LINESIZE", _SC_LEVEL2_CACHE_LINESIZE, SYSCONF },
{ "LEVEL3_CACHE_SIZE", _SC_LEVEL3_CACHE_SIZE, SYSCONF },
{ "LEVEL3_CACHE_ASSOC", _SC_LEVEL3_CACHE_ASSOC, SYSCONF },
{ "LEVEL3_CACHE_LINESIZE", _SC_LEVEL3_CACHE_LINESIZE, SYSCONF },
{ "LEVEL4_CACHE_SIZE", _SC_LEVEL4_CACHE_SIZE, SYSCONF },
{ "LEVEL4_CACHE_ASSOC", _SC_LEVEL4_CACHE_ASSOC, SYSCONF },
{ "LEVEL4_CACHE_LINESIZE", _SC_LEVEL4_CACHE_LINESIZE, SYSCONF },
{ "IPV6", _SC_IPV6, SYSCONF },
{ "RAW_SOCKETS", _SC_RAW_SOCKETS, SYSCONF },
{ "_POSIX_IPV6", _SC_IPV6, SYSCONF },
{ "_POSIX_RAW_SOCKETS", _SC_RAW_SOCKETS, SYSCONF },
{ NULL, 0, SYSCONF }
};
extern const char *__progname;
static void
usage (void)
{
fprintf (stderr,
_("Usage: %s [-v specification] variable_name [pathname]\n"),
__progname);
fprintf (stderr,
_(" %s -a [pathname]\n"), __progname);
exit (2);
}
static void
print_all (const char *path)
{
const struct conf *c;
size_t clen;
long int value;
char *cvalue;
for (c = vars; c->name != NULL; ++c) {
printf("%-35s", c->name);
switch (c->call) {
case PATHCONF:
value = pathconf (path, c->call_name);
if (value != -1) {
printf("%ld", value);
}
printf("\n");
break;
case SYSCONF:
value = sysconf (c->call_name);
if (value == -1l) {
if (c->call_name == _SC_UINT_MAX
|| c->call_name == _SC_ULONG_MAX)
printf ("%lu", value);
}
else {
printf ("%ld", value);
}
printf ("\n");
break;
case CONFSTR:
clen = confstr (c->call_name, (char *) NULL, 0);
cvalue = (char *) malloc (clen);
if (cvalue == NULL)
error (3, 0, _("memory exhausted"));
if (confstr (c->call_name, cvalue, clen) != clen)
error (3, errno, "confstr");
printf ("%.*s\n", (int) clen, cvalue);
free (cvalue);
break;
}
}
exit (0);
}
int
main (int argc, char *argv[])
{
const struct conf *c;
/* Set locale. Do not set LC_ALL because the other categories must
not be affected (according to POSIX.2). */
setlocale (LC_CTYPE, "");
setlocale (LC_MESSAGES, "");
/* Initialize the message catalog. */
textdomain (PACKAGE);
if (argc > 1 && strcmp (argv[1], "--version") == 0)
{
printf ("getconf %s%s\n", PKGVERSION, VERSION);
printf (gettext ("\
Copyright (C) %s Free Software Foundation, Inc.\n\
This is free software; see the source for copying conditions. There is NO\n\
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\
"), "2022");
printf (gettext ("Written by %s.\n"), "Roland McGrath");
return 0;
}
if (argc > 1 && strcmp (argv[1], "--help") == 0)
{
printf (gettext ("\
Usage: getconf [-v SPEC] VAR\n\
or: getconf [-v SPEC] PATH_VAR PATH\n\
\n\
Get the configuration value for variable VAR, or for variable PATH_VAR\n\
for path PATH. If SPEC is given, give values for compilation\n\
environment SPEC.\n\n"));
printf (gettext ("For bug reporting instructions, please see:\n\
%s.\n"), REPORT_BUGS_TO);
return 0;
}
#ifdef ALL_ENVIRONMENTS_DEFINED
if (argc > 1 && strncmp (argv[1], "-v", 2) == 0)
{
if (argv[1][2] == '\0')
{
if (argc < 3)
usage ();
argv += 2;
argc -= 2;
}
else
{
argv += 1;
argc -= 1;
}
}
#else
const char *getconf_dir = getenv ("GETCONF_DIR") ?: GETCONF_DIR;
size_t getconf_dirlen = strlen (getconf_dir);
const char *spec = NULL;
char buf[sizeof "POSIX_V6_LPBIG_OFFBIG"];
char *argv0 = argv[0];
if (argc > 1 && strncmp (argv[1], "-v", 2) == 0)
{
if (argv[1][2] == '\0')
{
if (argc < 3)
usage ();
spec = argv[2];
argv += 2;
argc -= 2;
}
else
{
spec = &argv[1][2];
argv += 1;
argc -= 1;
}
}
else
{
char default_name[getconf_dirlen + sizeof "/default"];
memcpy (mempcpy (default_name, getconf_dir, getconf_dirlen),
"/default", sizeof "/default");
int len = readlink (default_name, buf, sizeof buf - 1);
if (len > 0)
{
buf[len] = '\0';
spec = buf;
}
}
/* Check for the specifications we know. */
if (spec != NULL)
{
size_t i;
for (i = 0; i < nspecs; ++i)
if (strcmp (spec, specs[i].name) == 0)
break;
if (i == nspecs)
error (2, 0, _("unknown specification \"%s\""), spec);
switch (specs[i].num)
{
# ifndef _XBS5_ILP32_OFF32
case _SC_XBS5_ILP32_OFF32:
# endif
# ifndef _XBS5_ILP32_OFFBIG
case _SC_XBS5_ILP32_OFFBIG:
# endif
# ifndef _XBS5_LP64_OFF64
case _SC_XBS5_LP64_OFF64:
# endif
# ifndef _XBS5_LPBIG_OFFBIG
case _SC_XBS5_LPBIG_OFFBIG:
# endif
# ifndef _POSIX_V6_ILP32_OFF32
case _SC_V6_ILP32_OFF32:
# endif
# ifndef _POSIX_V6_ILP32_OFFBIG
case _SC_V6_ILP32_OFFBIG:
# endif
# ifndef _POSIX_V6_LP64_OFF64
case _SC_V6_LP64_OFF64:
# endif
# ifndef _POSIX_V6_LPBIG_OFFBIG
case _SC_V6_LPBIG_OFFBIG:
# endif
# ifndef _POSIX_V7_ILP32_OFF32
case _SC_V7_ILP32_OFF32:
# endif
# ifndef _POSIX_V7_ILP32_OFFBIG
case _SC_V7_ILP32_OFFBIG:
# endif
# ifndef _POSIX_V7_LP64_OFF64
case _SC_V7_LP64_OFF64:
# endif
# ifndef _POSIX_V7_LPBIG_OFFBIG
case _SC_V7_LPBIG_OFFBIG:
# endif
{
const char *args[argc + 3];
size_t spec_len = strlen (spec);
char getconf_name[getconf_dirlen + 1 + spec_len + 1];
memcpy (mempcpy (mempcpy (getconf_name, getconf_dir,
getconf_dirlen),
"/", 1), spec, spec_len + 1);
args[0] = argv0;
args[1] = "-v";
args[2] = spec;
memcpy (&args[3], &argv[1], argc * sizeof (argv[1]));
execv (getconf_name, (char * const *) args);
error (4, errno, _("Couldn't execute %s"), getconf_name);
}
default:
break;
}
}
#endif
if (argc > 1 && strcmp (argv[1], "-a") == 0)
{
if (argc == 2)
print_all ("/");
else if (argc == 3)
print_all (argv[2]);
else
usage ();
}
int ai = 1;
if (argc > ai && strcmp (argv[ai], "--") == 0)
++ai;
if (argc - ai < 1 || argc - ai > 2)
usage ();
for (c = vars; c->name != NULL; ++c)
if (strcmp (c->name, argv[ai]) == 0
|| (strncmp (c->name, "_POSIX_", 7) == 0
&& strcmp (c->name + 7, argv[ai]) == 0))
{
long int value;
size_t clen;
char *cvalue;
switch (c->call)
{
case PATHCONF:
if (argc - ai < 2)
usage ();
errno = 0;
value = pathconf (argv[ai + 1], c->call_name);
if (value == -1)
{
if (errno)
error (3, errno, "pathconf: %s", argv[ai + 1]);
else
puts (_("undefined"));
}
else
printf ("%ld\n", value);
exit (0);
case SYSCONF:
if (argc - ai > 1)
usage ();
value = sysconf (c->call_name);
if (value == -1l)
{
if (c->call_name == _SC_UINT_MAX
|| c->call_name == _SC_ULONG_MAX)
printf ("%lu\n", value);
else
puts (_("undefined"));
}
else
printf ("%ld\n", value);
exit (0);
case CONFSTR:
if (argc - ai > 1)
usage ();
clen = confstr (c->call_name, (char *) NULL, 0);
cvalue = (char *) malloc (clen);
if (cvalue == NULL)
error (3, 0, _("memory exhausted"));
if (confstr (c->call_name, cvalue, clen) != clen)
error (3, errno, "confstr");
printf ("%.*s\n", (int) clen, cvalue);
exit (0);
}
}
error (2, 0, _("Unrecognized variable `%s'"), argv[ai]);
/* NOTREACHED */
return 2;
}
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