diff options
Diffstat (limited to 'toys/posix/getconf.c')
| -rw-r--r-- | toys/posix/getconf.c | 170 |
1 files changed, 94 insertions, 76 deletions
diff --git a/toys/posix/getconf.c b/toys/posix/getconf.c index a97bc1af..a9ef298a 100644 --- a/toys/posix/getconf.c +++ b/toys/posix/getconf.c @@ -23,104 +23,120 @@ config GETCONF #include "toys.h" #include <limits.h> -// make.sh calls sed on this file (getconf.c) to extract symbols from our three -// XXX_names arrays and matches them with #defines in limits.h and unistd.h to -// produce getconf.h, which contains corresponding XXX_values[] arrays -// with the appropriate constants or -1 for unknown entries. - -#define UNKNOWN -1 -#include "generated/getconf.h" +// This is missing on glibc (bionic has it). +#ifndef _SC_XOPEN_UUCP +#define _SC_XOPEN_UUCP -1 +#endif + +struct config { + char *name; + int value; +}; // Lists of symbols getconf can query, broken down by whether we call sysconf(), -// getconf(), or output the macro value directly. +// confstr(), or output the macro value directly. // Probe the live system -char *sysconf_names[] = { +struct config sysconfs[] = { /* POSIX */ - "_POSIX_ADVISORY_INFO", "_POSIX_BARRIERS", "_POSIX_ASYNCHRONOUS_IO", - "_POSIX_CLOCK_SELECTION", "_POSIX_CPUTIME", "_POSIX_FSYNC", "_POSIX_IPV6", - "_POSIX_JOB_CONTROL", "_POSIX_MAPPED_FILES", "_POSIX_MEMLOCK", - "_POSIX_MEMLOCK_RANGE", "_POSIX_MEMORY_PROTECTION", "_POSIX_MESSAGE_PASSING", - "_POSIX_MONOTONIC_CLOCK", "_POSIX_PRIORITIZED_IO", - "_POSIX_PRIORITY_SCHEDULING", "_POSIX_RAW_SOCKETS", - "_POSIX_READER_WRITER_LOCKS", "_POSIX_REALTIME_SIGNALS", "_POSIX_REGEXP", - "_POSIX_SAVED_IDS", "_POSIX_SEMAPHORES", "_POSIX_SHARED_MEMORY_OBJECTS", - "_POSIX_SHELL", "_POSIX_SPAWN", "_POSIX_SPIN_LOCKS", "_POSIX_SPORADIC_SERVER", - "_POSIX_SS_REPL_MAX", "_POSIX_SYNCHRONIZED_IO", - "_POSIX_THREAD_ATTR_STACKADDR", "_POSIX_THREAD_ATTR_STACKSIZE", - "_POSIX_THREAD_CPUTIME", "_POSIX_THREAD_PRIO_INHERIT", - "_POSIX_THREAD_PRIO_PROTECT", "_POSIX_THREAD_PRIORITY_SCHEDULING", - "_POSIX_THREAD_PROCESS_SHARED", "_POSIX_THREAD_ROBUST_PRIO_INHERIT", - "_POSIX_THREAD_ROBUST_PRIO_PROTECT", "_POSIX_THREAD_SAFE_FUNCTIONS", - "_POSIX_THREAD_SPORADIC_SERVER", "_POSIX_THREADS", "_POSIX_TIMEOUTS", - "_POSIX_TIMERS", "_POSIX_TRACE", "_POSIX_TRACE_EVENT_FILTER", - "_POSIX_TRACE_EVENT_NAME_MAX", "_POSIX_TRACE_INHERIT", "_POSIX_TRACE_LOG", - "_POSIX_TRACE_NAME_MAX", "_POSIX_TRACE_SYS_MAX", - "_POSIX_TRACE_USER_EVENT_MAX", "_POSIX_TYPED_MEMORY_OBJECTS", - "_POSIX_VERSION", "_POSIX_V7_ILP32_OFF32", "_POSIX_V7_ILP32_OFFBIG", - "_POSIX_V7_LP64_OFF64", "_POSIX_V7_LPBIG_OFFBIG", +#define CONF(n) {"_POSIX_" #n,_SC_ ## n} + CONF(ADVISORY_INFO), CONF(BARRIERS), CONF(ASYNCHRONOUS_IO), + CONF(CLOCK_SELECTION), CONF(CPUTIME), CONF(FSYNC), CONF(IPV6), + CONF(JOB_CONTROL), CONF(MAPPED_FILES), CONF(MEMLOCK), CONF(MEMLOCK_RANGE), + CONF(MEMORY_PROTECTION), CONF(MESSAGE_PASSING), CONF(MONOTONIC_CLOCK), + CONF(PRIORITY_SCHEDULING), CONF(RAW_SOCKETS), CONF(READER_WRITER_LOCKS), + CONF(REALTIME_SIGNALS), CONF(REGEXP), CONF(SAVED_IDS), CONF(SEMAPHORES), + CONF(SHARED_MEMORY_OBJECTS), CONF(SHELL), CONF(SPAWN), CONF(SPIN_LOCKS), + CONF(SPORADIC_SERVER), CONF(SS_REPL_MAX), CONF(SYNCHRONIZED_IO), + CONF(THREAD_ATTR_STACKADDR), CONF(THREAD_ATTR_STACKSIZE), + CONF(THREAD_CPUTIME), CONF(THREAD_PRIO_INHERIT), CONF(THREAD_PRIO_PROTECT), + CONF(THREAD_PRIORITY_SCHEDULING), CONF(THREAD_PROCESS_SHARED), + CONF(THREAD_ROBUST_PRIO_INHERIT), CONF(THREAD_ROBUST_PRIO_PROTECT), + CONF(THREAD_SAFE_FUNCTIONS), CONF(THREAD_SPORADIC_SERVER), CONF(THREADS), + CONF(TIMEOUTS), CONF(TIMERS), CONF(TRACE), CONF(TRACE_EVENT_FILTER), + CONF(TRACE_EVENT_NAME_MAX), CONF(TRACE_INHERIT), CONF(TRACE_LOG), + CONF(TRACE_NAME_MAX), CONF(TRACE_SYS_MAX), CONF(TRACE_USER_EVENT_MAX), + CONF(TYPED_MEMORY_OBJECTS), CONF(VERSION), CONF(V7_ILP32_OFF32), + CONF(V7_ILP32_OFFBIG), CONF(V7_LP64_OFF64), CONF(V7_LPBIG_OFFBIG), /* POSIX.2 */ - "_POSIX2_C_BIND", "_POSIX2_C_DEV", "_POSIX2_CHAR_TERM", "_POSIX2_FORT_DEV", - "_POSIX2_FORT_RUN", "_POSIX2_LOCALEDEF", "_POSIX2_PBS", - "_POSIX2_PBS_ACCOUNTING", "_POSIX2_PBS_CHECKPOINT", "_POSIX2_PBS_LOCATE", - "_POSIX2_PBS_MESSAGE", "_POSIX2_PBS_TRACK", "_POSIX2_SW_DEV", "_POSIX2_UPE", - "_POSIX2_VERSION", +#undef CONF +#define CONF(n) {"_POSIX2_" #n,_SC_2_ ## n} + CONF(C_BIND), CONF(C_DEV), CONF(CHAR_TERM), CONF(FORT_DEV), CONF(FORT_RUN), + CONF(LOCALEDEF), CONF(PBS), CONF(PBS_ACCOUNTING), CONF(PBS_CHECKPOINT), + CONF(PBS_LOCATE), CONF(PBS_MESSAGE), CONF(PBS_TRACK), CONF(SW_DEV), + CONF(UPE), CONF(VERSION), /* X/Open */ - "_XOPEN_CRYPT", "_XOPEN_ENH_I18N", "_XOPEN_REALTIME", - "_XOPEN_REALTIME_THREADS", "_XOPEN_SHM", "_XOPEN_STREAMS", "_XOPEN_UNIX", - "_XOPEN_UUCP", "_XOPEN_VERSION", +#undef CONF +#define CONF(n) {"_XOPEN_" #n,_SC_XOPEN_ ## n} + CONF(CRYPT), CONF(ENH_I18N), CONF(REALTIME), CONF(REALTIME_THREADS), + CONF(SHM), CONF(STREAMS), CONF(UNIX), CONF(UUCP), CONF(VERSION), /* No obvious standard */ - "AIO_LISTIO_MAX", "AIO_MAX", "AIO_PRIO_DELTA_MAX", "ARG_MAX", "ATEXIT_MAX", - "BC_BASE_MAX", "BC_DIM_MAX", "BC_SCALE_MAX", "BC_STRING_MAX", "CHILD_MAX", - "COLL_WEIGHTS_MAX", "DELAYTIMER_MAX", "EXPR_NEST_MAX", "HOST_NAME_MAX", - "IOV_MAX", "LINE_MAX", "LOGIN_NAME_MAX", "NGROUPS_MAX", "MQ_OPEN_MAX", - "MQ_PRIO_MAX", "OPEN_MAX", "PAGE_SIZE", "PAGESIZE", - "PTHREAD_DESTRUCTOR_ITERATIONS", "PTHREAD_KEYS_MAX", "PTHREAD_STACK_MIN", - "PTHREAD_THREADS_MAX", "RE_DUP_MAX", "RTSIG_MAX", "SEM_NSEMS_MAX", - "SEM_VALUE_MAX", "SIGQUEUE_MAX", "STREAM_MAX", "SYMLOOP_MAX", "TIMER_MAX", - "TTY_NAME_MAX", "TZNAME_MAX", "NPROCESSORS_CONF", "NPROCESSORS_ONLN" +#undef CONF +#define CONF(n) {#n,_SC_ ## n} + CONF(AIO_LISTIO_MAX), CONF(AIO_MAX), CONF(AIO_PRIO_DELTA_MAX), CONF(ARG_MAX), + CONF(ATEXIT_MAX), CONF(BC_BASE_MAX), CONF(BC_DIM_MAX), CONF(BC_SCALE_MAX), + CONF(BC_STRING_MAX), CONF(CHILD_MAX), CONF(COLL_WEIGHTS_MAX), + CONF(DELAYTIMER_MAX), CONF(EXPR_NEST_MAX), CONF(HOST_NAME_MAX), + CONF(IOV_MAX), CONF(LINE_MAX), CONF(LOGIN_NAME_MAX), CONF(NGROUPS_MAX), + CONF(MQ_OPEN_MAX), CONF(MQ_PRIO_MAX), CONF(OPEN_MAX), CONF(PAGE_SIZE), + CONF(PAGESIZE), + /* There's a weird "PTHREAD" vs "THREAD" mismatch here. */ + {"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}, + CONF(RE_DUP_MAX), CONF(RTSIG_MAX), CONF(SEM_NSEMS_MAX), CONF(SEM_VALUE_MAX), + CONF(SIGQUEUE_MAX), CONF(STREAM_MAX), CONF(SYMLOOP_MAX), CONF(TIMER_MAX), + CONF(TTY_NAME_MAX), CONF(TZNAME_MAX), CONF(NPROCESSORS_CONF), + CONF(NPROCESSORS_ONLN) }; // Strings out of a header -char *confstr_names[] = { - "PATH", "V7_ENV" +struct config confstrs[] = { +#undef CONF +#define CONF(n) {#n,_CS_ ## n} + CONF(PATH), CONF(V7_ENV) }; // Integers out of a header -char *limit_names[] = { - "_POSIX_AIO_LISTIO_MAX", "_POSIX_AIO_MAX", "_POSIX_ARG_MAX", - "_POSIX_CHILD_MAX", "_POSIX_DELAYTIMER_MAX", "_POSIX_HOST_NAME_MAX", - "_POSIX_LINK_MAX", "_POSIX_LOGIN_NAME_MAX", "_POSIX_MAX_CANON", - "_POSIX_MAX_INPUT", "_POSIX_NAME_MAX", "_POSIX_NGROUPS_MAX", - "_POSIX_OPEN_MAX", "_POSIX_PATH_MAX", "_POSIX_PIPE_BUF", "_POSIX_RE_DUP_MAX", - "_POSIX_RTSIG_MAX", "_POSIX_SEM_NSEMS_MAX", "_POSIX_SEM_VALUE_MAX", - "_POSIX_SIGQUEUE_MAX", "_POSIX_SSIZE_MAX", "_POSIX_STREAM_MAX", - "_POSIX_SYMLINK_MAX", "_POSIX_SYMLOOP_MAX", - "_POSIX_THREAD_DESTRUCTOR_ITERATIONS", "_POSIX_THREAD_KEYS_MAX", - "_POSIX_THREAD_THREADS_MAX", "_POSIX_TIMER_MAX", "_POSIX_TTY_NAME_MAX", - "_POSIX_TZNAME_MAX", "_POSIX2_BC_BASE_MAX", "_POSIX2_BC_DIM_MAX", - "_POSIX2_BC_SCALE_MAX", "_POSIX2_BC_STRING_MAX", "_POSIX2_CHARCLASS_NAME_MAX", - "_POSIX2_COLL_WEIGHTS_MAX", "_POSIX2_EXPR_NEST_MAX", "_POSIX2_LINE_MAX", - "_POSIX2_RE_DUP_MAX" +struct config limits[] = { +#undef CONF +#define CONF(n) {#n,n} + CONF(_POSIX_AIO_LISTIO_MAX), CONF(_POSIX_AIO_MAX), CONF(_POSIX_ARG_MAX), + CONF(_POSIX_CHILD_MAX), CONF(_POSIX_DELAYTIMER_MAX), + CONF(_POSIX_HOST_NAME_MAX), CONF(_POSIX_LINK_MAX), + CONF(_POSIX_LOGIN_NAME_MAX), CONF(_POSIX_MAX_CANON), + CONF(_POSIX_MAX_INPUT), CONF(_POSIX_NAME_MAX), CONF(_POSIX_NGROUPS_MAX), + CONF(_POSIX_OPEN_MAX), CONF(_POSIX_PATH_MAX), CONF(_POSIX_PIPE_BUF), + CONF(_POSIX_RE_DUP_MAX), CONF(_POSIX_RTSIG_MAX), CONF(_POSIX_SEM_NSEMS_MAX), + CONF(_POSIX_SEM_VALUE_MAX), CONF(_POSIX_SIGQUEUE_MAX), CONF(_POSIX_SSIZE_MAX), + CONF(_POSIX_STREAM_MAX), CONF(_POSIX_SYMLINK_MAX), CONF(_POSIX_SYMLOOP_MAX), + CONF(_POSIX_THREAD_DESTRUCTOR_ITERATIONS), CONF(_POSIX_THREAD_KEYS_MAX), + CONF(_POSIX_THREAD_THREADS_MAX), CONF(_POSIX_TIMER_MAX), + CONF(_POSIX_TTY_NAME_MAX), CONF(_POSIX_TZNAME_MAX), + CONF(_POSIX2_BC_BASE_MAX), CONF(_POSIX2_BC_DIM_MAX), + CONF(_POSIX2_BC_SCALE_MAX), CONF(_POSIX2_BC_STRING_MAX), + CONF(_POSIX2_CHARCLASS_NAME_MAX), CONF(_POSIX2_COLL_WEIGHTS_MAX), + CONF(_POSIX2_EXPR_NEST_MAX), CONF(_POSIX2_LINE_MAX), CONF(_POSIX2_RE_DUP_MAX) }; // Names that default to blank -char *other_names[] = { - "LFS_CFLAGS", "LFS_LDFLAGS", "LFS_LIBS" +struct config others[] = { + {"LFS_CFLAGS", 0}, {"LFS_LDFLAGS", 0}, {"LFS_LIBS", 0} }; void getconf_main(void) { - char **names[] = {sysconf_names, confstr_names, limit_names, other_names}, - **args; - int i, j, lens[] = {ARRAY_LEN(sysconf_names), ARRAY_LEN(confstr_names), - ARRAY_LEN(limit_names), ARRAY_LEN(other_names)}; + struct config *configs[] = {sysconfs, confstrs, limits, others}; + char **args; + int i, j, lens[] = {ARRAY_LEN(sysconfs), ARRAY_LEN(confstrs), + ARRAY_LEN(limits), ARRAY_LEN(others)}; if (toys.optflags&FLAG_l) { - for (i = 0; i<4; i++) for (j = 0; j<lens[i]; j++) puts(names[i][j]); + for (i = 0; i<4; i++) for (j = 0; j<lens[i]; j++) puts(configs[i][j].name); return; } @@ -132,13 +148,15 @@ void getconf_main(void) if (!strcmp("CS_PATH", name)) name += 3; for (i = 0; i<4; i++) for (j = 0; j<lens[i]; j++) { - if (strcmp(names[i][j], name)) continue; + struct config *c = &configs[i][j]; + + if (strcmp(c->name, name)) continue; - if (!i) printf("%ld\n", sysconf(sysconf_vals[j])); + if (!i) printf("%ld\n", sysconf(c->value)); else if (i==1) { - confstr(confstr_vals[j], toybuf, sizeof(toybuf)); + confstr(c->value, toybuf, sizeof(toybuf)); puts(toybuf); - } else if (i==2) printf("%d\n", limit_vals[j]); + } else if (i==2) printf("%d\n", c->value); // For legacy kernel build else if (sizeof(long)==4 && !j) puts("-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"); |