[compiler-rt] [compiler-rt][rtsan] fseek api interception. (PR #122163)

[David CARLIER via llvm-commits]

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@@ -478,6 +478,80 @@ class RtsanOpenedFileTest : public RtsanFileTest {
   int fd = -1;
 };
 
+#if SANITIZER_INTERCEPT_FSEEK
+TEST_F(RtsanOpenedFileTest, FgetposDieWhenRealtime) {
+  auto Func = [this]() {
+    fpos_t pos;
+    int ret = fgetpos(GetOpenFile(), &pos);
+    ASSERT_THAT(ret, Eq(0));
+  };
+
+  ExpectRealtimeDeath(Func, MAYBE_APPEND_64("fgetpos"));
+  ExpectNonRealtimeSurvival(Func);
+}
+
+TEST_F(RtsanOpenedFileTest, FsetposDieWhenRealtime) {
+  fpos_t pos;
+  int ret = fgetpos(GetOpenFile(), &pos);
+  ASSERT_THAT(ret, Eq(0));
+  auto Func = [this, pos]() {
+    int ret = fsetpos(GetOpenFile(), &pos);
+    ASSERT_THAT(ret, Eq(0));
+  };
+
+  ExpectRealtimeDeath(Func, MAYBE_APPEND_64("fsetpos"));
+  ExpectNonRealtimeSurvival(Func);
+}
+
+TEST_F(RtsanOpenedFileTest, FseekDieWhenRealtime) {
+  auto Func = [this]() {
+    int ret = fseek(GetOpenFile(), 0, SEEK_CUR);
+    ASSERT_THAT(ret, Eq(0));
+  };
+
+  ExpectRealtimeDeath(Func, "fseek");
+  ExpectNonRealtimeSurvival(Func);
+}
+
+TEST_F(RtsanOpenedFileTest, FseekoDieWhenRealtime) {
+  auto Func = [this]() {
+    int ret = fseeko(GetOpenFile(), 0, SEEK_CUR);
+    ASSERT_THAT(ret, Eq(0));
+  };
+
+  ExpectRealtimeDeath(Func, MAYBE_APPEND_64("fseeko"));
+  ExpectNonRealtimeSurvival(Func);
+}
+
+TEST_F(RtsanOpenedFileTest, FtellDieWhenRealtime) {
+  auto Func = [this]() {
+    long ret = ftell(GetOpenFile());
+    ASSERT_THAT(ret, Eq(0));
+  };
+
+  ExpectRealtimeDeath(Func, "ftell");
+  ExpectNonRealtimeSurvival(Func);
+}
+
+TEST_F(RtsanOpenedFileTest, FtelloDieWhenRealtime) {
+  auto Func = [this]() {
+    off_t ret = ftello(GetOpenFile());
+    ASSERT_THAT(ret, Eq(0));
+  };
+
+  ExpectRealtimeDeath(Func, MAYBE_APPEND_64("ftello"));
+  ExpectNonRealtimeSurvival(Func);
+}
+
+TEST_F(RtsanOpenedFileTest, RewindDieWhenRealtime) {
+  int end = fseek(GetOpenFile(), 0, SEEK_END);
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devnexen wrote:

sure, doing it now.

https://github.com/llvm/llvm-project/pull/122163