Initial Contribution

1 files changed, 92 insertions, 0 deletions

diff --git a/adb/log_service.c b/adb/log_service.c
new file mode 100644
index 0000000..8edf98f
--- /dev/null
+++ b/adb/log_service.c
@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2007 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <sys/socket.h>
+#include <utils/logger.h>
+#include "sysdeps.h"
+#include "adb.h"
+
+#define LOG_FILE_DIR    "/dev/log/"
+
+void write_log_entry(int fd, struct logger_entry *buf);
+
+void log_service(int fd, void *cookie)
+{
+    /* get the name of the log filepath to read */
+    char * log_filepath = cookie;
+
+    /* open the log file. */
+    int logfd = unix_open(log_filepath, O_RDONLY);
+    if (logfd < 0) {
+        goto done;
+    }
+
+    // temp buffer to read the entries
+    unsigned char buf[LOGGER_ENTRY_MAX_LEN + 1] __attribute__((aligned(4)));
+    struct logger_entry *entry = (struct logger_entry *) buf;
+
+    while (1) {
+        int ret;
+
+        ret = unix_read(logfd, entry, LOGGER_ENTRY_MAX_LEN);
+        if (ret < 0) {
+            if (errno == EINTR || errno == EAGAIN)
+                continue;
+            // perror("logcat read");
+            goto done;
+        }
+        else if (!ret) {
+            // fprintf(stderr, "read: Unexpected EOF!\n");
+            goto done;
+        }
+
+        /* NOTE: driver guarantees we read exactly one full entry */
+
+        entry->msg[entry->len] = '\0';
+
+        write_log_entry(fd, entry);
+    }
+
+done:
+    unix_close(fd);
+    free(log_filepath);
+}
+
+/* returns the full path to the log file in a newly allocated string */
+char * get_log_file_path(const char * log_name) {
+    char *log_device = malloc(strlen(LOG_FILE_DIR) + strlen(log_name) + 1);
+
+    strcpy(log_device, LOG_FILE_DIR);
+    strcat(log_device, log_name);
+
+    return log_device;
+}
+
+
+/* prints one log entry into the file descriptor fd */
+void write_log_entry(int fd, struct logger_entry *buf)
+{
+    size_t size = sizeof(struct logger_entry) + buf->len;
+
+    writex(fd, buf, size);
+}