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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 | /* compile: xcrun -sdk macosx.internal clang -ldarwintest -o iopolicy iopolicy.c -g -Weverything */ #include <darwintest.h> #include <darwintest_utils.h> #include <darwintest_multiprocess.h> #include <errno.h> #include <stdint.h> #include <stdlib.h> #include <unistd.h> #include <sys/attr.h> #include <sys/event.h> #include <sys/resource.h> #ifndef IOPOL_TYPE_VFS_DISALLOW_RW_FOR_O_EVTONLY #define IOPOL_TYPE_VFS_DISALLOW_RW_FOR_O_EVTONLY 10 #endif #ifndef IOPOL_VFS_DISALLOW_RW_FOR_O_EVTONLY_OFF #define IOPOL_VFS_DISALLOW_RW_FOR_O_EVTONLY_OFF 0 #endif #ifndef IOPOL_VFS_DISALLOW_RW_FOR_O_EVTONLY_ON #define IOPOL_VFS_DISALLOW_RW_FOR_O_EVTONLY_ON 1 #endif T_GLOBAL_META( T_META_NAMESPACE("xnu.vfs.iopolicy"), T_META_RADAR_COMPONENT_NAME("xnu"), T_META_RADAR_COMPONENT_VERSION("vfs"), T_META_CHECK_LEAKS(false)); #define TEST_FILE "testfile" static char g_testfile[MAXPATHLEN]; static char g_testdata[1024]; static void exit_cleanup(void) { (void)remove(g_testfile); } T_DECL(iopol_type_vfs_disallow_rw_for_o_evtonly, "test IOPOL_TYPE_VFS_DISALLOW_RW_FOR_O_EVTONLY policy") { char attrbuf[256]; struct attrlist attrlist; struct kevent vnode_kevent; struct timespec kevent_timeout; const char *tmpdir = dt_tmpdir(); void *mapped; int err, fd, kq; T_SETUPBEGIN; atexit(exit_cleanup); T_ASSERT_POSIX_ZERO(chdir(tmpdir), "Setup: changing to tmpdir: %s", tmpdir); snprintf(g_testfile, MAXPATHLEN, "%s/%s", tmpdir, TEST_FILE); T_WITH_ERRNO; fd = open(g_testfile, O_CREAT | O_RDWR, 0666); T_ASSERT_NE(fd, -1, "Create test file: %s", g_testfile); T_WITH_ERRNO; err = (int)write(fd, g_testfile, sizeof(g_testfile)); T_ASSERT_NE(err, -1, "Write: %s", g_testfile); T_ASSERT_POSIX_SUCCESS(close(fd), "Close test file: %s", g_testfile); kq = kqueue(); T_ASSERT_NE(kq, -1, "Create kqueue"); T_SETUPEND; T_WITH_ERRNO; err = setiopolicy_np(IOPOL_TYPE_VFS_DISALLOW_RW_FOR_O_EVTONLY, IOPOL_SCOPE_THREAD, IOPOL_VFS_DISALLOW_RW_FOR_O_EVTONLY_ON); T_ASSERT_TRUE((err == -1) && (errno == EINVAL), "setiopolicy_np(IOPOL_TYPE_VFS_DISALLOW_RW_FOR_O_EVTONLY, IOPOL_SCOPE_THREAD, 1)"); T_WITH_ERRNO; err = setiopolicy_np(IOPOL_TYPE_VFS_DISALLOW_RW_FOR_O_EVTONLY, IOPOL_SCOPE_PROCESS, IOPOL_VFS_DISALLOW_RW_FOR_O_EVTONLY_ON); T_ASSERT_NE(err, -1, "setiopolicy_np(IOPOL_TYPE_VFS_DISALLOW_RW_FOR_O_EVTONLY, IOPOL_SCOPE_PROCESS, 1)"); T_WITH_ERRNO; err = getiopolicy_np(IOPOL_TYPE_VFS_DISALLOW_RW_FOR_O_EVTONLY, IOPOL_SCOPE_PROCESS); T_ASSERT_EQ(err, IOPOL_VFS_DISALLOW_RW_FOR_O_EVTONLY_ON, "getiopolicy_np(IOPOL_TYPE_VFS_DISALLOW_RW_FOR_O_EVTONLY, IOPOL_SCOPE_PROCESS)"); T_WITH_ERRNO; err = setiopolicy_np(IOPOL_TYPE_VFS_DISALLOW_RW_FOR_O_EVTONLY, IOPOL_SCOPE_PROCESS, IOPOL_VFS_DISALLOW_RW_FOR_O_EVTONLY_OFF); T_ASSERT_TRUE((err == -1) && (errno == EINVAL), "setiopolicy_np(IOPOL_TYPE_VFS_DISALLOW_RW_FOR_O_EVTONLY, IOPOL_SCOPE_PROCESS, 0)"); T_WITH_ERRNO; fd = open(g_testfile, O_RDWR | O_EVTONLY, 0666); T_ASSERT_NE(fd, -1, "Open test fi1e in 'O_RDW|O_EVTONLY': %s", g_testfile); T_WITH_ERRNO; err = (int)write(fd, g_testdata, sizeof(g_testdata)); T_ASSERT_TRUE((err == -1) && (errno == EBADF), "Trying to write: %s", g_testfile); T_WITH_ERRNO; err = (int)read(fd, g_testdata, sizeof(g_testdata)); T_ASSERT_TRUE((err == -1) && (errno == EBADF), "Trying to read: %s", g_testfile); T_WITH_ERRNO; mapped = mmap(NULL, sizeof(g_testdata), PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0); T_ASSERT_TRUE((err == -1) && (errno == EACCES), "Trying to mmaped read/write: %s", g_testfile); T_ASSERT_POSIX_SUCCESS(close(fd), "Close test file: %s", g_testfile); T_WITH_ERRNO; fd = open(g_testfile, O_EVTONLY, 0666); T_ASSERT_NE(fd, -1, "Open test fi1e in 'O_EVTONLY': %s", g_testfile); T_WITH_ERRNO; err = (int)read(fd, g_testdata, sizeof(g_testdata)); T_ASSERT_TRUE((err == -1) && (errno == EBADF), "Trying to read: %s", g_testfile); T_WITH_ERRNO; memset(&attrlist, 0, sizeof(attrlist)); attrlist.bitmapcount = ATTR_BIT_MAP_COUNT; attrlist.commonattr = (ATTR_CMN_OBJTYPE | ATTR_CMN_OBJID | ATTR_CMN_MODTIME); err = fgetattrlist(fd, &attrlist, &attrbuf, sizeof(attrbuf), 0); T_ASSERT_NE(err, -1, "Perform getattrlist: %s", g_testfile); kevent_timeout.tv_sec = kevent_timeout.tv_nsec = 0; EV_SET(&vnode_kevent, fd, EVFILT_VNODE, (EV_ADD | EV_ENABLE | EV_CLEAR), NOTE_WRITE, 0, (void *)g_testfile); err = kevent(kq, &vnode_kevent, 1, NULL, 0, &kevent_timeout); T_ASSERT_GE(err, 0, "Register vnode event on kq: %d", kq); kevent_timeout.tv_sec = 2; kevent_timeout.tv_nsec = 0; EV_SET(&vnode_kevent, fd, EVFILT_VNODE, EV_CLEAR, 0, 0, 0); err = kevent(kq, NULL, 0, &vnode_kevent, 1, &kevent_timeout); T_ASSERT_NE(err, -1, "Listen for vnode event on kq: %d", kq); T_ASSERT_POSIX_SUCCESS(close(fd), "Close test file: %s", g_testfile); } |