tests/time.c

   1 #include <darwintest.h>
   2 #include <stdlib.h>
   3 #include <sys/stat.h>
   4 #include <sys/syslimits.h>
   5 #include <sys/time.h>
   6 #include <time.h>
   7 #include <unistd.h>
   8
   9 T_GLOBAL_META(T_META_CHECK_LEAKS(false));
  10
  11 T_DECL(settimeofday, "check setting and getting time of day",
  12     T_META_ASROOT(true))
  13 {
  14         struct timeval origtime = {};
  15         struct timezone origtz = {};
  16         int ret = gettimeofday(&origtime, &origtz);
  17         T_ASSERT_POSIX_SUCCESS(ret, "get current time with gettimeofday(2)");
  18
  19 #if TARGET_OS_BRIDGE
  20         /*
  21          * bridgeOS is not allowed to set the time -- only the macOS side can.
  22          */
  23         T_SKIP("bridgeOS is not allowed to call settimeofday(2)");
  24 #endif /* TARGET_OS_BRIDGE */
  25
  26         struct timeval newtime = {};
  27         newtime = origtime;
  28         newtime.tv_sec -= 60;
  29         ret = settimeofday(&newtime, NULL);
  30         T_ASSERT_POSIX_SUCCESS(ret,
  31             "set time back 60 seconds with settimeofday(2)");
  32
  33         ret = gettimeofday(&newtime, NULL);
  34         T_ASSERT_POSIX_SUCCESS(ret, "get new time with gettimeofday(2)");
  35
  36         T_ASSERT_GT(origtime.tv_sec, newtime.tv_sec,
  37             "new time should be before original time");
  38
  39         newtime = origtime;
  40         newtime.tv_sec += 1;
  41         ret = settimeofday(&newtime, NULL);
  42         T_ASSERT_POSIX_SUCCESS(ret,
  43             "set time close to original value with gettimeofday(2)");
  44 }
  45
  46 static char tmppath[PATH_MAX] = "";
  47
  48 static void
  49 cleanup_tmpfile(void)
  50 {
  51         if (tmppath[0] != '\0') {
  52                 unlink(tmppath);
  53         }
  54 }
  55
  56 static int
  57 create_tmpfile(void)
  58 {
  59         const char *tmpdir = getenv("TMPDIR");
  60         strlcat(tmppath, tmpdir ? tmpdir : "/tmp", sizeof(tmppath));
  61         strlcat(tmppath, "xnu_quick_test.XXXXX", sizeof(tmppath));
  62         int fd = mkstemp(tmppath);
  63         T_ASSERT_POSIX_SUCCESS(fd, "created temporary file at %s", tmppath);
  64         T_ATEND(cleanup_tmpfile);
  65         return fd;
  66 }
  67
  68 T_DECL(futimes, "check that futimes updates file times",
  69     T_META_RUN_CONCURRENTLY(true))
  70 {
  71         int tmpfd = create_tmpfile();
  72
  73         struct stat stbuf = {};
  74         int ret = fstat(tmpfd, &stbuf);
  75         T_ASSERT_POSIX_SUCCESS(ret, "get file metadata with fstat(2)");
  76         struct timeval amtimes[2] = {};
  77         TIMESPEC_TO_TIMEVAL(&amtimes[0], &stbuf.st_atimespec);
  78         TIMESPEC_TO_TIMEVAL(&amtimes[1], &stbuf.st_mtimespec);
  79
  80         amtimes[0].tv_sec -= 120;
  81         amtimes[1].tv_sec -= 120;
  82
  83         ret = futimes(tmpfd, amtimes);
  84         T_ASSERT_POSIX_SUCCESS(ret, "update file times with utimes(2)");
  85
  86         ret = fstat(tmpfd, &stbuf);
  87         T_ASSERT_POSIX_SUCCESS(ret, "get file metadata after update with fstat(2)");
  88         struct timeval newamtimes[2] = {};
  89         TIMESPEC_TO_TIMEVAL(&newamtimes[0], &stbuf.st_atimespec);
  90         TIMESPEC_TO_TIMEVAL(&newamtimes[1], &stbuf.st_mtimespec);
  91
  92         /*
  93          * Reading the metadata shouldn't count as an access.
  94          */
  95         T_ASSERT_EQ(amtimes[0].tv_sec, newamtimes[0].tv_sec,
  96             "access time matches what was set");
  97         T_ASSERT_EQ(amtimes[1].tv_sec, newamtimes[1].tv_sec,
  98             "modification time matches what was set");
  99 }