/* Copyright (C) 1991, 1992, 1995, 1996 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. The GNU C Library 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with the GNU C Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include #include #include #include #include #include #include struct conf { const char *name; const int call_name; const enum { SYSCONF, CONFSTR, PATHCONF } call; }; static struct conf vars[] = { { "LINK_MAX", _PC_LINK_MAX, PATHCONF }, { "MAX_CANON", _PC_MAX_CANON, PATHCONF }, { "MAX_INPUT", _PC_MAX_INPUT, PATHCONF }, { "NAME_MAX", _PC_NAME_MAX, PATHCONF }, { "PATH_MAX", _PC_PATH_MAX, PATHCONF }, { "PIPE_BUF", _PC_PIPE_BUF, PATHCONF }, { "SOCK_MAXBUF", _PC_SOCK_MAXBUF, PATHCONF }, { "_POSIX_CHOWN_RESTRICTED", _PC_CHOWN_RESTRICTED, PATHCONF }, { "_POSIX_NO_TRUNC", _PC_NO_TRUNC, PATHCONF }, { "_POSIX_VDISABLE", _PC_VDISABLE, PATHCONF }, { "_POSIX_SYNC_IO", _PC_SYNC_IO, PATHCONF }, { "_POSIX_ASYNC_IO", _PC_ASYNC_IO, PATHCONF }, { "_POSIX_PRIO_IO", _PC_PRIO_IO, PATHCONF }, { "ARG_MAX", _SC_ARG_MAX, SYSCONF }, { "CHILD_MAX", _SC_CHILD_MAX, SYSCONF }, { "CLK_TCK", _SC_CLK_TCK, SYSCONF }, { "NGROUPS_MAX", _SC_NGROUPS_MAX, SYSCONF }, { "OPEN_MAX", _SC_OPEN_MAX, SYSCONF }, { "_POSIX_JOB_CONTROL", _SC_JOB_CONTROL, SYSCONF }, { "_POSIX_SAVED_IDS", _SC_SAVED_IDS, SYSCONF }, { "_POSIX_REALTIME_SIGNALS", _SC_REALTIME_SIGNALS, SYSCONF }, { "_POSIX_PRIORITY_SCHEDULING", _SC_PRIORITY_SCHEDULING, SYSCONF }, { "_POSIX_TIMERS", _SC_TIMERS, SYSCONF }, { "_POSIX_ASYNCHRONOUS_IO", _SC_ASYNCHRONOUS_IO, SYSCONF }, { "_POSIX_PRIORITIZED_IO", _SC_PRIORITIZED_IO, SYSCONF }, { "_POSIX_SYNCHRONIZED_IO", _SC_SYNCHRONIZED_IO, SYSCONF }, { "_POSIX_FSYNC", _SC_FSYNC, 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_SEMAPHORES", _SC_SEMAPHORES, SYSCONF }, { "_POSIX_SHARED_MEMORY_OBJECTS", _SC_SHARED_MEMORY_OBJECTS, SYSCONF }, { "_POSIX_VERSION", _SC_VERSION, SYSCONF }, { "_POSIX_PII", _SC_PII, SYSCONF }, { "_POSIX_PII_XTI", _SC_PII_XTI, SYSCONF }, { "_POSIX_PII_SOCKET", _SC_PII_SOCKET, SYSCONF }, { "_POSIX_PII_INTERNET", _SC_PII_INTERNET, SYSCONF }, { "_POSIX_PII_OSI", _SC_PII_OSI, SYSCONF }, { "_POSIX_POLL", _SC_POLL, SYSCONF }, { "_POSIX_SELECT", _SC_SELECT, SYSCONF }, { "UIO_MAXIOV", _SC_UIO_MAXIOV, SYSCONF }, { "_POSIX_PII_INTERNET_STREAM", _SC_PII_INTERNET_STREAM, SYSCONF }, { "_POSIX_PII_INTERNET_DGRAM", _SC_PII_INTERNET_DGRAM, SYSCONF }, { "_POSIX_PII_OSI_COTS", _SC_PII_OSI_COTS, SYSCONF }, { "_POSIX_PII_OSI_CLTS", _SC_PII_OSI_CLTS, SYSCONF }, { "_POSIX_PII_OSI_M", _SC_PII_OSI_M, SYSCONF }, { "_T_IOV_MAX", _SC_T_IOV_MAX, SYSCONF }, { "_POSIX_THREADS", _SC_THREADS, SYSCONF }, { "_POSIX_THREAD_SAFE_FUNCTIONS", _SC_THREAD_SAFE_FUNCTIONS, SYSCONF }, { "NSS_BUFLEN_GROUP", _SC_GETGR_R_SIZE_MAX, SYSCONF }, { "NSS_BUFLEN_PASSWD", _SC_GETPW_R_SIZE_MAX, SYSCONF }, { "LOGNAME_MAX", _SC_LOGIN_NAME_MAX, SYSCONF }, { "TTY_NAME_MAX", _SC_TTY_NAME_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 }, { "_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_PROCESS_SHARED", _SC_THREAD_PROCESS_SHARED, SYSCONF }, { "_NPROCESSORS_CONF", _SC_NPROCESSORS_CONF, SYSCONF }, { "_NPROCESSORS_ONLN", _SC_NPROCESSORS_ONLN, SYSCONF }, { "ATEXIT_MAX", _SC_ATEXIT_MAX, SYSCONF }, { "PASS_MAX", _SC_PASS_MAX, SYSCONF }, { "_PHYS_PAGES", _SC_PHYS_PAGES, SYSCONF }, { "_AVPHYS_PAGES", _SC_AVPHYS_PAGES, SYSCONF }, { "_XOPEN_VERSION", _SC_XOPEN_VERSION }, /* 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 }, { "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 }, { "RE_DUP_MAX", _SC_RE_DUP_MAX, SYSCONF }, { "CHARCLASS_NAME_MAX", _SC_CHARCLASS_NAME_MAX }, { "POSIX2_C_BIND", _SC_2_C_BIND, SYSCONF }, { "POSIX2_C_DEV", _SC_2_C_DEV, SYSCONF }, { "POSIX2_FORT_DEV", _SC_2_FORT_DEV, SYSCONF }, { "POSIX2_FORT_RUN", _SC_2_FORT_RUN, SYSCONF }, { "POSIX2_LOCALEDEF", _SC_2_LOCALEDEF, SYSCONF }, { "POSIX2_SW_DEV", _SC_2_SW_DEV, SYSCONF }, { "PATH", _CS_PATH, CONFSTR }, { NULL, 0, SYSCONF } }; extern const char *__progname; static void usage (void) { fprintf (stderr, _("Usage: %s variable_name [pathname]\n"), __progname); exit (2); } int main (int argc, char *argv[]) { register const struct conf *c; if (argc < 2 || argc > 3) usage (); for (c = vars; c->name != NULL; ++c) if (!strcmp (c->name, argv[1])) { long int value; size_t clen; char *cvalue; switch (c->call) { case PATHCONF: if (argc < 3) usage (); value = pathconf (argv[2], c->call_name); if (value == -1) error (3, errno, "pathconf: %s", argv[2]); printf ("%ld\n", value); exit (0); case SYSCONF: if (argc > 2) usage (); value = sysconf (c->call_name); printf ("%ld\n", value); exit (0); case CONFSTR: if (argc > 2) 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[1]); /* NOTREACHED */ return 2; }