Emulator: fix adbd qemu pipe partial write
It does happens that the adb_write only writes to the
qemu pipe partially which throws host side's adb backend
into confusion and crashes.
This CL replaces adb_write with WriteFdExactly;
adb_read with ReadFdExactly.
(cherry picked from commit f66c5938be56c6fe607725c80129e677e196f03a)
Change-Id: I684f5df79b1e3f00b4b7a2452c2712a73c15973c
diff --git a/adb/transport_local.cpp b/adb/transport_local.cpp
index e6e699b..372bedf 100644
--- a/adb/transport_local.cpp
+++ b/adb/transport_local.cpp
@@ -225,7 +225,7 @@
static const char _ok_resp[] = "ok";
const int port = (int) (uintptr_t) arg;
- int res, fd;
+ int fd;
char tmp[256];
char con_name[32];
@@ -251,19 +251,19 @@
*/
/* Send the 'accept' request. */
- res = adb_write(fd, _accept_req, strlen(_accept_req));
- if ((size_t)res == strlen(_accept_req)) {
+ if (WriteFdExactly(fd, _accept_req, strlen(_accept_req))) {
/* Wait for the response. In the response we expect 'ok' on success,
* or 'ko' on failure. */
- res = adb_read(fd, tmp, sizeof(tmp));
- if (res != 2 || memcmp(tmp, _ok_resp, 2)) {
+ if (!ReadFdExactly(fd, tmp, 2) || memcmp(tmp, _ok_resp, 2)) {
D("Accepting ADB host connection has failed.");
adb_close(fd);
} else {
/* Host is connected. Register the transport, and start the
* exchange. */
register_socket_transport(fd, "host", port, 1);
- adb_write(fd, _start_req, strlen(_start_req));
+ if (!WriteFdExactly(fd, _start_req, strlen(_start_req))) {
+ adb_close(fd);
+ }
}
/* Prepare for accepting of the next ADB host connection. */