sysconf_cgotest_linux.go

Documentation: github.com/tklauser/go-sysconf/cgotest

     1  // Copyright 2018 Tobias Klauser. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package sysconf_cgotest
     6  
     7  /*
     8  #include <gnu/libc-version.h>
     9  #include <stdlib.h>
    10  #include <unistd.h>
    11  */
    12  import "C"
    13  
    14  import (
    15  	"strconv"
    16  	"strings"
    17  	"testing"
    18  
    19  	"github.com/tklauser/go-sysconf"
    20  )
    21  
    22  func testSysconfCgoMatch(t *testing.T) {
    23  	testCases := []testCase{
    24  		{sysconf.SC_AIO_LISTIO_MAX, C._SC_AIO_LISTIO_MAX, "AIO_LISTIO_MAX"},
    25  		{sysconf.SC_AIO_MAX, C._SC_AIO_MAX, "AIO_MAX"},
    26  		{sysconf.SC_AIO_PRIO_DELTA_MAX, C._SC_AIO_PRIO_DELTA_MAX, "AIO_PRIO_DELTA_MAX"},
    27  		{sysconf.SC_ARG_MAX, C._SC_ARG_MAX, "ARG_MAX"},
    28  		{sysconf.SC_ATEXIT_MAX, C._SC_ATEXIT_MAX, "ATEXIT_MAX"},
    29  		{sysconf.SC_BC_BASE_MAX, C._SC_BC_BASE_MAX, "BC_BASE_MAX"},
    30  		{sysconf.SC_BC_DIM_MAX, C._SC_BC_DIM_MAX, "BC_DIM_MAX"},
    31  		{sysconf.SC_BC_SCALE_MAX, C._SC_BC_SCALE_MAX, "BC_SCALE_MAX"},
    32  		{sysconf.SC_BC_STRING_MAX, C._SC_BC_STRING_MAX, "BC_STRING_MAX"},
    33  		{sysconf.SC_CHILD_MAX, C._SC_CHILD_MAX, "CHILD_MAX"},
    34  		{sysconf.SC_CLK_TCK, C._SC_CLK_TCK, "CLK_TCK"},
    35  		{sysconf.SC_COLL_WEIGHTS_MAX, C._SC_COLL_WEIGHTS_MAX, "COLL_WEIGHTS_MAX"},
    36  		{sysconf.SC_DELAYTIMER_MAX, C._SC_DELAYTIMER_MAX, "DELAYTIMER_MAX"},
    37  		{sysconf.SC_EXPR_NEST_MAX, C._SC_EXPR_NEST_MAX, "EXPR_NEST_MAX"},
    38  		{sysconf.SC_GETGR_R_SIZE_MAX, C._SC_GETGR_R_SIZE_MAX, "GETGR_R_SIZE_MAX"},
    39  		{sysconf.SC_GETPW_R_SIZE_MAX, C._SC_GETPW_R_SIZE_MAX, "GETPW_R_SIZE_MAX"},
    40  		{sysconf.SC_HOST_NAME_MAX, C._SC_HOST_NAME_MAX, "HOST_NAME_MAX"},
    41  		{sysconf.SC_IOV_MAX, C._SC_IOV_MAX, "IOV_MAX"},
    42  		{sysconf.SC_LINE_MAX, C._SC_LINE_MAX, "LINE_MAX"},
    43  		{sysconf.SC_LOGIN_NAME_MAX, C._SC_LOGIN_NAME_MAX, "LOGIN_NAME_MAX"},
    44  		{sysconf.SC_MQ_OPEN_MAX, C._SC_MQ_OPEN_MAX, "MQ_OPEN_MAX"},
    45  		{sysconf.SC_MQ_PRIO_MAX, C._SC_MQ_PRIO_MAX, "MQ_PRIO_MAX"},
    46  		{sysconf.SC_NGROUPS_MAX, C._SC_NGROUPS_MAX, "NGROUPS_MAX"},
    47  		{sysconf.SC_OPEN_MAX, C._SC_OPEN_MAX, "OPEN_MAX"},
    48  		{sysconf.SC_PAGE_SIZE, C._SC_PAGE_SIZE, "PAGE_SIZE"},
    49  		{sysconf.SC_PAGESIZE, C._SC_PAGESIZE, "PAGESIZE"},
    50  		{sysconf.SC_THREAD_DESTRUCTOR_ITERATIONS, C._SC_THREAD_DESTRUCTOR_ITERATIONS, "PTHREAD_DESTRUCTOR_ITERATIONS"},
    51  		{sysconf.SC_THREAD_KEYS_MAX, C._SC_THREAD_KEYS_MAX, "PTHREAD_KEYS_MAX"},
    52  		{sysconf.SC_THREAD_STACK_MIN, C._SC_THREAD_STACK_MIN, "PTHREAD_STACK_MIN"},
    53  		{sysconf.SC_THREAD_THREADS_MAX, C._SC_THREAD_THREADS_MAX, "PTHREAD_THREADS_MAX"},
    54  		{sysconf.SC_RE_DUP_MAX, C._SC_RE_DUP_MAX, "RE_DUP_MAX"},
    55  		{sysconf.SC_RTSIG_MAX, C._SC_RTSIG_MAX, "RTSIG_MAX"},
    56  		{sysconf.SC_SEM_NSEMS_MAX, C._SC_SEM_NSEMS_MAX, "SEM_NSEMS_MAX"},
    57  		{sysconf.SC_SEM_VALUE_MAX, C._SC_SEM_VALUE_MAX, "SEM_VALUE_MAX"},
    58  		{sysconf.SC_SIGQUEUE_MAX, C._SC_SIGQUEUE_MAX, "SIGQUEUE_MAX"},
    59  		{sysconf.SC_STREAM_MAX, C._SC_STREAM_MAX, "STREAM_MAX"},
    60  		{sysconf.SC_SYMLOOP_MAX, C._SC_SYMLOOP_MAX, "SYMLOOP_MAX"},
    61  		{sysconf.SC_TIMER_MAX, C._SC_TIMER_MAX, "TIMER_MAX"},
    62  		{sysconf.SC_TTY_NAME_MAX, C._SC_TTY_NAME_MAX, "TTY_NAME_MAX"},
    63  
    64  		{sysconf.SC_ADVISORY_INFO, C._SC_ADVISORY_INFO, "_POSIX_ADVISORY_INFO"},
    65  		{sysconf.SC_ASYNCHRONOUS_IO, C._SC_ASYNCHRONOUS_IO, "_POSIX_ASYNCHRONOUS_IO"},
    66  		{sysconf.SC_BARRIERS, C._SC_BARRIERS, "_POSIX_BARRIERS"},
    67  		{sysconf.SC_CLOCK_SELECTION, C._SC_CLOCK_SELECTION, "_POSIX_CLOCK_SELECTION"},
    68  		{sysconf.SC_CPUTIME, C._SC_CPUTIME, "_POSIX_CPUTIME"},
    69  		{sysconf.SC_FSYNC, C._SC_FSYNC, "_POSIX_FSYNC"},
    70  		{sysconf.SC_IPV6, C._SC_IPV6, "_POSIX_IPV6"},
    71  		{sysconf.SC_JOB_CONTROL, C._SC_JOB_CONTROL, "_POSIX_JOB_CONTROL"},
    72  		{sysconf.SC_MAPPED_FILES, C._SC_MAPPED_FILES, "_POSIX_MAPPED_FILES"},
    73  		{sysconf.SC_MEMLOCK, C._SC_MEMLOCK, "_POSIX_MEMLOCK"},
    74  		{sysconf.SC_MEMLOCK_RANGE, C._SC_MEMLOCK_RANGE, "_POSIX_MEMLOCK_RANGE"},
    75  		{sysconf.SC_MEMORY_PROTECTION, C._SC_MEMORY_PROTECTION, "_POSIX_MEMORY_PROTECTION"},
    76  		{sysconf.SC_MESSAGE_PASSING, C._SC_MESSAGE_PASSING, "_POSIX_MESSAGE_PASSING"},
    77  		{sysconf.SC_MONOTONIC_CLOCK, C._SC_MONOTONIC_CLOCK, "_POSIX_MONOTONIC_CLOCK"},
    78  		{sysconf.SC_PRIORITIZED_IO, C._SC_PRIORITIZED_IO, "_POSIX_PRIORITIZED_IO"},
    79  		{sysconf.SC_PRIORITY_SCHEDULING, C._SC_PRIORITY_SCHEDULING, "_POSIX_PRIORITY_SCHEDULING"},
    80  		{sysconf.SC_RAW_SOCKETS, C._SC_RAW_SOCKETS, "_POSIX_RAW_SOCKETS"},
    81  		{sysconf.SC_READER_WRITER_LOCKS, C._SC_READER_WRITER_LOCKS, "_POSIX_READER_WRITER_LOCKS"},
    82  		{sysconf.SC_REALTIME_SIGNALS, C._SC_REALTIME_SIGNALS, "_POSIX_REALTIME_SIGNALS"},
    83  		{sysconf.SC_REGEXP, C._SC_REGEXP, "_POSIX_REGEXP"},
    84  		{sysconf.SC_SAVED_IDS, C._SC_SAVED_IDS, "_POSIX_SAVED_IDS"},
    85  		{sysconf.SC_SEMAPHORES, C._SC_SEMAPHORES, "_POSIX_SEMAPHORES"},
    86  		{sysconf.SC_SHARED_MEMORY_OBJECTS, C._SC_SHARED_MEMORY_OBJECTS, "_POSIX_SHARED_MEMORY_OBJECTS"},
    87  		{sysconf.SC_SHELL, C._SC_SHELL, "_POSIX_SHELL"},
    88  		{sysconf.SC_SPAWN, C._SC_SPAWN, "_POSIX_SPAWN"},
    89  		{sysconf.SC_SPIN_LOCKS, C._SC_SPIN_LOCKS, "_POSIX_SPIN_LOCKS"},
    90  		{sysconf.SC_SPORADIC_SERVER, C._SC_SPORADIC_SERVER, "_POSIX_SPORADIC_SERVER"},
    91  		{sysconf.SC_SYNCHRONIZED_IO, C._SC_SYNCHRONIZED_IO, "_POSIX_SYNCHRONIZED_IO"},
    92  		{sysconf.SC_THREAD_ATTR_STACKADDR, C._SC_THREAD_ATTR_STACKADDR, "_POSIX_THREAD_ATTR_STACKADDR"},
    93  		{sysconf.SC_THREAD_ATTR_STACKSIZE, C._SC_THREAD_ATTR_STACKSIZE, "_POSIX_THREAD_ATTR_STACKSIZE"},
    94  		{sysconf.SC_THREAD_CPUTIME, C._SC_THREAD_CPUTIME, "_POSIX_THREAD_CPUTIME"},
    95  		{sysconf.SC_THREAD_PRIO_INHERIT, C._SC_THREAD_PRIO_INHERIT, "_POSIX_THREAD_PRIO_INHERIT"},
    96  		{sysconf.SC_THREAD_PRIO_PROTECT, C._SC_THREAD_PRIO_PROTECT, "_POSIX_THREAD_PRIO_PROTECT"},
    97  		{sysconf.SC_THREAD_PRIORITY_SCHEDULING, C._SC_THREAD_PRIORITY_SCHEDULING, "_POSIX_THREAD_PRIORITY_SCHEDULING"},
    98  		{sysconf.SC_THREAD_PROCESS_SHARED, C._SC_THREAD_PROCESS_SHARED, "_POSIX_THREAD_PROCESS_SHARED"},
    99  		{sysconf.SC_THREAD_SAFE_FUNCTIONS, C._SC_THREAD_SAFE_FUNCTIONS, "_POSIX_THREAD_SAFE_FUNCTIONS"},
   100  		{sysconf.SC_THREAD_SPORADIC_SERVER, C._SC_THREAD_SPORADIC_SERVER, "_POSIX_THREAD_SPORADIC_SERVER"},
   101  		{sysconf.SC_THREADS, C._SC_THREADS, "_POSIX_THREADS"},
   102  		{sysconf.SC_TIMEOUTS, C._SC_TIMEOUTS, "_POSIX_TIMEOUTS"},
   103  		{sysconf.SC_TIMERS, C._SC_TIMERS, "_POSIX_TIMERS"},
   104  		{sysconf.SC_TRACE, C._SC_TRACE, "_POSIX_TRACE"},
   105  		{sysconf.SC_TRACE_EVENT_FILTER, C._SC_TRACE_EVENT_FILTER, "_POSIX_TRACE_EVENT_FILTER"},
   106  		{sysconf.SC_TRACE_EVENT_NAME_MAX, C._SC_TRACE_EVENT_NAME_MAX, "_POSIX_TRACE_EVENT_NAME_MAX"},
   107  		{sysconf.SC_TRACE_INHERIT, C._SC_TRACE_INHERIT, "_POSIX_TRACE_INHERIT"},
   108  		{sysconf.SC_TRACE_LOG, C._SC_TRACE_LOG, "_POSIX_TRACE_LOG"},
   109  		{sysconf.SC_TRACE_NAME_MAX, C._SC_TRACE_NAME_MAX, "_POSIX_TRACE_NAME_MAX"},
   110  		{sysconf.SC_TRACE_SYS_MAX, C._SC_TRACE_SYS_MAX, "_POSIX_TRACE_SYS_MAX"},
   111  		{sysconf.SC_TRACE_USER_EVENT_MAX, C._SC_TRACE_USER_EVENT_MAX, "_POSIX_TRACE_USER_EVENT_MAX"},
   112  		{sysconf.SC_TYPED_MEMORY_OBJECTS, C._SC_TYPED_MEMORY_OBJECTS, "_POSIX_TYPED_MEMORY_OBJECTS"},
   113  		{sysconf.SC_VERSION, C._SC_VERSION, "_POSIX_VERSION"},
   114  
   115  		{sysconf.SC_V7_ILP32_OFF32, C._SC_V7_ILP32_OFF32, "_POSIX_V7_ILP32_OFF32"},
   116  		{sysconf.SC_V7_ILP32_OFFBIG, C._SC_V7_ILP32_OFFBIG, "_POSIX_V7_ILP32_OFFBIG"},
   117  		{sysconf.SC_V7_LP64_OFF64, C._SC_V7_LP64_OFF64, "_POSIX_V7_LP64_OFF64"},
   118  		{sysconf.SC_V7_LPBIG_OFFBIG, C._SC_V7_LPBIG_OFFBIG, "_POSIX_V7_LPBIG_OFFBIG"},
   119  
   120  		{sysconf.SC_V6_ILP32_OFF32, C._SC_V6_ILP32_OFF32, "_POSIX_V6_ILP32_OFF32"},
   121  		{sysconf.SC_V6_ILP32_OFFBIG, C._SC_V6_ILP32_OFFBIG, "_POSIX_V6_ILP32_OFFBIG"},
   122  		{sysconf.SC_V6_LP64_OFF64, C._SC_V6_LP64_OFF64, "_POSIX_V6_LP64_OFF64"},
   123  		{sysconf.SC_V6_LPBIG_OFFBIG, C._SC_V6_LPBIG_OFFBIG, "_POSIX_V6_LPBIG_OFFBIG"},
   124  
   125  		{sysconf.SC_2_C_BIND, C._SC_2_C_BIND, "_POSIX2_C_BIND"},
   126  		{sysconf.SC_2_C_DEV, C._SC_2_C_DEV, "_POSIX2_C_DEV"},
   127  		// glibc version < 2.22 does not define _POSIX2_C_VERSION
   128  		// despite supporting the standard, see glibc bug BZ 438. Test it
   129  		// in testPosix2CVersion below.
   130  		// {sysconf.SC_2_C_VERSION, C._SC_2_C_VERSION, "_POSIX2_C_VERSION"},
   131  		{sysconf.SC_2_CHAR_TERM, C._SC_2_CHAR_TERM, "_POSIX2_CHAR_TERM"},
   132  		{sysconf.SC_2_FORT_DEV, C._SC_2_FORT_DEV, "_POSIX2_FORT_DEV"},
   133  		{sysconf.SC_2_FORT_RUN, C._SC_2_FORT_RUN, "_POSIX2_FORT_RUN"},
   134  		{sysconf.SC_2_LOCALEDEF, C._SC_2_LOCALEDEF, "_POSIX2_LOCALEDEF"},
   135  		{sysconf.SC_2_PBS, C._SC_2_PBS, "_POSIX2_PBS"},
   136  		{sysconf.SC_2_PBS_ACCOUNTING, C._SC_2_PBS_ACCOUNTING, "_POSIX2_PBS_ACCOUNTING"},
   137  		{sysconf.SC_2_PBS_CHECKPOINT, C._SC_2_PBS_CHECKPOINT, "_POSIX2_PBS_CHECKPOINT"},
   138  		{sysconf.SC_2_PBS_LOCATE, C._SC_2_PBS_LOCATE, "_POSIX2_PBS_LOCATE"},
   139  		{sysconf.SC_2_PBS_MESSAGE, C._SC_2_PBS_MESSAGE, "_POSIX2_PBS_MESSAGE"},
   140  		{sysconf.SC_2_PBS_TRACK, C._SC_2_PBS_TRACK, "_POSIX2_PBS_TRACK"},
   141  		{sysconf.SC_2_SW_DEV, C._SC_2_SW_DEV, "_POSIX2_SW_DEV"},
   142  		{sysconf.SC_2_UPE, C._SC_2_UPE, "_POSIX2_UPE"},
   143  		{sysconf.SC_2_VERSION, C._SC_2_VERSION, "_POSIX2_VERSION"},
   144  
   145  		// _XOPEN_CRYPT was removed in glibc 2.28, don't test it
   146  		{sysconf.SC_XOPEN_ENH_I18N, C._SC_XOPEN_ENH_I18N, "_XOPEN_ENH_I18N"},
   147  		{sysconf.SC_XOPEN_REALTIME, C._SC_XOPEN_REALTIME, "_XOPEN_REALTIME"},
   148  		{sysconf.SC_XOPEN_REALTIME_THREADS, C._SC_XOPEN_REALTIME_THREADS, "_XOPEN_REALTIME_THREADS"},
   149  		{sysconf.SC_XOPEN_SHM, C._SC_XOPEN_SHM, "_XOPEN_SHM"},
   150  		{sysconf.SC_XOPEN_STREAMS, C._SC_XOPEN_STREAMS, "_XOPEN_STREAMS"},
   151  		{sysconf.SC_XOPEN_UNIX, C._SC_XOPEN_UNIX, "_XOPEN_UNIX"},
   152  		{sysconf.SC_XOPEN_VERSION, C._SC_XOPEN_VERSION, "_XOPEN_VERSION"},
   153  		{sysconf.SC_XOPEN_XCU_VERSION, C._SC_XOPEN_XCU_VERSION, "_XOPEN_XCU_VERSION"},
   154  
   155  		// non-standard
   156  		{sysconf.SC_PHYS_PAGES, C._SC_PHYS_PAGES, "_PHYS_PAGES"},
   157  		// AV_PHYS_PAGES might change between calling Go and C version
   158  		// of sysconf. Don't test it for now.
   159  		{sysconf.SC_NPROCESSORS_CONF, C._SC_NPROCESSORS_CONF, "_NPROCESSORS_CONF"},
   160  		{sysconf.SC_NPROCESSORS_ONLN, C._SC_NPROCESSORS_ONLN, "_NPROCESSORS_ONLN"},
   161  		{sysconf.SC_UIO_MAXIOV, C._SC_UIO_MAXIOV, "UIO_MAXIOV"},
   162  	}
   163  	for _, tc := range testCases {
   164  		testSysconfGoCgo(t, tc)
   165  	}
   166  
   167  	// These _SC_* are defined but no longer supported by sysconf(3)
   168  	testCasesInvalid := []testCase{
   169  		{sysconf.SC_SS_REPL_MAX, C._SC_SS_REPL_MAX, "_POSIX_SS_REPL_MAX"},
   170  		{sysconf.SC_THREAD_ROBUST_PRIO_INHERIT, C._SC_THREAD_ROBUST_PRIO_INHERIT, "_POSIX_THREAD_ROBUST_PRIO_INHERIT"},
   171  		{sysconf.SC_THREAD_ROBUST_PRIO_PROTECT, C._SC_THREAD_ROBUST_PRIO_PROTECT, "_POSIX_THREAD_ROBUST_PRIO_PROTECT"},
   172  	}
   173  	for _, tc := range testCasesInvalid {
   174  		testSysconfGoCgoInvalid(t, tc)
   175  	}
   176  
   177  	testGlibcVersionDeps(t)
   178  }
   179  
   180  func testGlibcVersionDeps(t *testing.T) {
   181  	glibcVer := C.GoString(C.gnu_get_libc_version())
   182  	majMin := strings.Split(glibcVer, ".")
   183  	if len(majMin) < 2 {
   184  		t.Fatalf("unexpected glibc version: %v\n", glibcVer)
   185  	}
   186  	t.Logf("glibc version: %v\n", glibcVer)
   187  
   188  	maj, _ := strconv.Atoi(majMin[0])
   189  	min, _ := strconv.Atoi(majMin[1])
   190  
   191  	// _POSIX2_C_VERSION was fixed in glibc 2.22, see glibc commit
   192  	// 4e5f9259f352 ("Restore _POSIX2_C_VERSION definition (bug 438).")
   193  	if maj == 2 && min >= 22 {
   194  		cVersion := testCase{sysconf.SC_2_C_VERSION, C._SC_2_C_VERSION, "_POSIX2_C_VERSION"}
   195  		testSysconfGoCgo(t, cVersion)
   196  	} else {
   197  		t.Skipf("skipping _POSIX2_C_VERSION test on glibc %d.%d (< 2.22)", maj, min)
   198  	}
   199  
   200  	// _TZNAME_MAX was changed in glibc 2.26, see glibc commit
   201  	// 8492c4dd699e ("timezone: Remove TZNAME_MAX limit from sysconf [BZ #15576]")
   202  	if maj == 2 && min >= 26 {
   203  		tzname := testCase{sysconf.SC_TZNAME_MAX, C._SC_TZNAME_MAX, "TZNAME_MAX"}
   204  		testSysconfGoCgo(t, tzname)
   205  	} else {
   206  		t.Skipf("skipping _TZNAME_MAX test on glibc %d.%d (< 2.26)", maj, min)
   207  	}
   208  }
   209
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