TSG-1723 日志中填写“设备编号”字段

common/src/tfe_utils.cpp

@@ -103,3 +103,55 @@ int tfe_scandir(const char *dir, struct dirent ***namelist,
    
 }
 
+char *tfe_read_file(const char *filename, size_t *filelen)
+{
+    FILE *file = NULL;
+    long length = 0;
+    char *content = NULL;
+    size_t read_chars = 0;
+
+    file = fopen(filename, "rb");
+    if (file == NULL)
+    {
+        goto cleanup;
+    }
+    if (fseek(file, 0, SEEK_END) != 0)
+    {
+        goto cleanup;
+    }
+    length = ftell(file);
+    if (length < 0)
+    {
+        goto cleanup;
+    }
+    if (fseek(file, 0, SEEK_SET) != 0)
+    {
+        goto cleanup;
+    }
+
+    /* allocate content buffer */
+    content = (char*)malloc((size_t)length + sizeof(""));
+    if (content == NULL)
+    {
+        goto cleanup;
+    }
+
+    /* read the file into memory */
+    read_chars = fread(content, sizeof(char), (size_t)length, file);
+    if ((long)read_chars != length)
+    {
+        free(content);
+        content = NULL;
+        goto cleanup;
+    }
+	*filelen = read_chars;
+    content[read_chars] = '\0';
+cleanup:
+    if (file != NULL)
+    {
+        fclose(file);
+    }
+    return content;
+}
+
+