dumpstate: add camera hal graph state dump

Only dump the latest dump files so that bugreport
size won't be increased by too much.

Test: build and capture bugreport
Bug: 178737594
Change-Id: I699ee76997c9107dad13419688f3c6c04551313b

dumpstate/DumpstateDevice.cpp

@@ -247,6 +247,7 @@ DumpstateDevice::DumpstateDevice()
         { "ramdump", [this](int fd) { dumpRamdumpSection(fd); } },
         { "misc", [this](int fd) { dumpMiscSection(fd); } },
         { "gsc", [this](int fd) { dumpGscSection(fd); } },
+        { "camera", [this](int fd) { dumpCameraSection(fd); } },
     } {
 }
 
@@ -848,6 +849,14 @@ void DumpstateDevice::dumpGscSection(int fd) {
     RunCommandToFd(fd, "Citadel STATS", {"vendor/bin/hw/citadel_updater", "--stats"});
 }
 
+// Dump essential camera debugging logs
+void DumpstateDevice::dumpCameraSection(int fd) {
+    RunCommandToFd(fd, "Camera HAL Graph State Dump", {"/vendor/bin/sh", "-c",
+                       "for f in $(ls -t /data/vendor/camera/hal_graph_state*.txt |head -1); do "
+                       "echo $f ; cat $f ; done"},
+                       CommandOptions::WithTimeout(4).Build());
+}
+
 void DumpstateDevice::dumpModem(int fd, int fdModem)
 {
     std::string modemLogDir = MODEM_LOG_DIRECTORY;

dumpstate/DumpstateDevice.h

@@ -82,6 +82,7 @@ struct DumpstateDevice : public IDumpstateDevice {
     void dumpRamdumpSection(int fd);
     void dumpMiscSection(int fd);
     void dumpGscSection(int fd);
+    void dumpCameraSection(int fd);
 
     // Hybrid and binary sections that require an additional file descriptor
     void dumpModem(int fd, int fdModem);