fix: fix errno preservation in native socket hook

kaahos · kaahos · commit 326dcc2b6e96 · 2026-07-03T11:02:07.000+02:00
diff --git a/ddprof-lib/src/main/cpp/nativeSocketInterposer.cpp b/ddprof-lib/src/main/cpp/nativeSocketInterposer.cpp
@@ -76,6 +76,7 @@ static inline ssize_t runStreamSocketHook(int fd, Fn fn, u8 op, Call call) {
   }
   u64 t1 = TSC::ticks();
   if (NativeSocketSampler::active()) {
+    ErrnoGuard errno_guard;
     return NativeSocketSampler::recordHookResult(fd, ret, t0, t1, op);
   }
   return ret;

Original file line number	Diff line number	Diff line change
`@@ -76,6 +76,7 @@ static inline ssize_t runStreamSocketHook(int fd, Fn fn, u8 op, Call call) {`
`76`	`76`	`}`
`77`	`77`	`u64 t1 = TSC::ticks();`
`78`	`78`	`if (NativeSocketSampler::active()) {`
	`79`	`+ ErrnoGuard errno_guard;`
`79`	`80`	`return NativeSocketSampler::recordHookResult(fd, ret, t0, t1, op);`
`80`	`81`	`}`
`81`	`82`	`return ret;`