adb: switch unix_open to string_view.

Test: test_adb.py
Test: test_device.py
Test: $ANDROID_HOST_OUT/nativetest64/adb_test/adb_test
Test: adb shell /data/nativetest64/adbd_test/adbd_test
Change-Id: Ieecc9b1b7f2111f4da45d4bbd1b7703535fe7d4d

adb/adb.cpp

@@ -600,7 +600,7 @@ static void ReportServerStartupFailure(pid_t pid) {
     fprintf(stderr, "Full server startup log: %s\n", GetLogFilePath().c_str());
     fprintf(stderr, "Server had pid: %d\n", pid);
 
-    android::base::unique_fd fd(unix_open(GetLogFilePath().c_str(), O_RDONLY));
+    android::base::unique_fd fd(unix_open(GetLogFilePath(), O_RDONLY));
     if (fd == -1) return;
 
     // Let's not show more than 128KiB of log...

adb/adb_trace.cpp

@@ -72,8 +72,7 @@ static std::string get_log_file_name() {
 }
 
 void start_device_log(void) {
-    int fd = unix_open(get_log_file_name().c_str(),
-                       O_WRONLY | O_CREAT | O_TRUNC | O_CLOEXEC, 0640);
+    int fd = unix_open(get_log_file_name(), O_WRONLY | O_CREAT | O_TRUNC | O_CLOEXEC, 0640);
     if (fd == -1) {
         return;
     }

adb/client/main.cpp

@@ -40,7 +40,7 @@
 
 static void setup_daemon_logging() {
     const std::string log_file_path(GetLogFilePath());
-    int fd = unix_open(log_file_path.c_str(), O_WRONLY | O_CREAT | O_APPEND, 0640);
+    int fd = unix_open(log_file_path, O_WRONLY | O_CREAT | O_APPEND, 0640);
     if (fd == -1) {
         PLOG(FATAL) << "cannot open " << log_file_path;
     }

adb/client/usb_linux.cpp

@@ -156,7 +156,7 @@ static void find_usb_device(const std::string& base,
                 continue;
             }
 
-            int fd = unix_open(dev_name.c_str(), O_RDONLY | O_CLOEXEC);
+            int fd = unix_open(dev_name, O_RDONLY | O_CLOEXEC);
             if (fd == -1) {
                 continue;
             }
@@ -535,10 +535,10 @@ static void register_device(const char* dev_name, const char* dev_path, unsigned
     // Initialize mark so we don't get garbage collected after the device scan.
     usb->mark = true;
 
-    usb->fd = unix_open(usb->path.c_str(), O_RDWR | O_CLOEXEC);
+    usb->fd = unix_open(usb->path, O_RDWR | O_CLOEXEC);
     if (usb->fd == -1) {
         // Opening RW failed, so see if we have RO access.
-        usb->fd = unix_open(usb->path.c_str(), O_RDONLY | O_CLOEXEC);
+        usb->fd = unix_open(usb->path, O_RDONLY | O_CLOEXEC);
         if (usb->fd == -1) {
             D("[ usb open %s failed: %s]", usb->path.c_str(), strerror(errno));
             return;

adb/daemon/remount_service.cpp

@@ -103,7 +103,7 @@ bool dev_is_overlayfs(const std::string& dev) {
 
 bool make_block_device_writable(const std::string& dev) {
     if (dev_is_overlayfs(dev)) return true;
-    int fd = unix_open(dev.c_str(), O_RDONLY | O_CLOEXEC);
+    int fd = unix_open(dev, O_RDONLY | O_CLOEXEC);
     if (fd == -1) {
         return false;
     }

adb/sysdeps.h

@@ -27,6 +27,7 @@
 #include <errno.h>
 
 #include <string>
+#include <string_view>
 #include <vector>
 
 // Include this before open/close/unlink are defined as macros below.
@@ -139,7 +140,7 @@ static __inline__ int  adb_open_mode(const char* path, int options, int mode)
 }
 
 // See the comments for the !defined(_WIN32) version of unix_open().
-extern int unix_open(const char* path, int options, ...);
+extern int unix_open(std::string_view path, int options, ...);
 #define  open    ___xxx_unix_open
 
 // Checks if |fd| corresponds to a console.
@@ -357,20 +358,17 @@ static __inline__ void  close_on_exec(int  fd)
 // by unix_read(), unix_write(), unix_close()). Also, the C Runtime has
 // configurable CR/LF translation which defaults to text mode, but is settable
 // with _setmode().
-static __inline__ int  unix_open(const char*  path, int options,...)
-{
-    if ((options & O_CREAT) == 0)
-    {
-        return  TEMP_FAILURE_RETRY( open(path, options) );
-    }
-    else
-    {
-        int      mode;
-        va_list  args;
-        va_start( args, options );
-        mode = va_arg( args, int );
-        va_end( args );
-        return TEMP_FAILURE_RETRY( open( path, options, mode ) );
+static __inline__ int unix_open(std::string_view path, int options, ...) {
+    std::string zero_terminated(path.begin(), path.end());
+    if ((options & O_CREAT) == 0) {
+        return TEMP_FAILURE_RETRY(open(zero_terminated.c_str(), options));
+    } else {
+        int mode;
+        va_list args;
+        va_start(args, options);
+        mode = va_arg(args, int);
+        va_end(args);
+        return TEMP_FAILURE_RETRY(open(zero_terminated.c_str(), options, mode));
     }
 }
 

adb/sysdeps_win32.cpp

@@ -29,6 +29,7 @@
 #include <memory>
 #include <mutex>
 #include <string>
+#include <string_view>
 #include <unordered_map>
 #include <vector>
 
@@ -2203,15 +2204,15 @@ NarrowArgs::~NarrowArgs() {
     }
 }
 
-int unix_open(const char* path, int options, ...) {
+int unix_open(std::string_view path, int options, ...) {
     std::wstring path_wide;
-    if (!android::base::UTF8ToWide(path, &path_wide)) {
+    if (!android::base::UTF8ToWide(path.data(), path.size(), &path_wide)) {
         return -1;
     }
     if ((options & O_CREAT) == 0) {
         return _wopen(path_wide.c_str(), options);
     } else {
-        int      mode;
+        int mode;
         va_list  args;
         va_start(args, options);
         mode = va_arg(args, int);