C++ CHK_OVERFLOW函數代碼示例

本文整理匯總了C++中CHK_OVERFLOW函數的典型用法代碼示例。如果您正苦於以下問題：C++ CHK_OVERFLOW函數的具體用法？C++ CHK_OVERFLOW怎麽用？C++ CHK_OVERFLOW使用的例子？那麽, 這裏精選的函數代碼示例或許可以為您提供幫助。

在下文中一共展示了CHK_OVERFLOW函數的7個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的C++代碼示例。

示例1: diag_update_msg_mask

static void diag_update_msg_mask(int start, int end , uint8_t *buf)
{
	int found = 0, first, last, actual_last;
	uint8_t *actual_last_ptr;
	uint8_t *ptr = driver->msg_masks;
	uint8_t *ptr_buffer_start = &(*(driver->msg_masks));
	uint8_t *ptr_buffer_end = &(*(driver->msg_masks)) + MSG_MASK_SIZE;

	mutex_lock(&driver->diagchar_mutex);

	/* First SSID can be zero : So check that last is non-zero */
	while (*(uint32_t *)(ptr + 4)) {
		first = *(uint32_t *)ptr;
		ptr += 4;
		last = *(uint32_t *)ptr;
		ptr += 4;
		actual_last = *(uint32_t *)ptr;
		actual_last_ptr = ptr;
		ptr += 4;
		if (start >= first && start <= actual_last) {
			ptr += (start - first)*4;
			if (end > actual_last) {
				pr_info("diag: ssid range mismatch\n");
				actual_last = end;
				*(uint32_t *)(actual_last_ptr) = end;
			}
			if (CHK_OVERFLOW(ptr_buffer_start, ptr, ptr_buffer_end,
					  (((end - start)+1)*4))) {
				pr_debug("diag: update ssid start %d, end %d\n",
								 start, end);
				memcpy(ptr, buf , ((end - start)+1)*4);
			} else
				pr_alert("diag: Not enough space MSG_MASK\n");
			found = 1;
			break;
		} else {
			ptr += MAX_SSID_PER_RANGE*4;
		}
	}
	/* Entry was not found - add new table */
	if (!found) {
		if (CHK_OVERFLOW(ptr_buffer_start, ptr, ptr_buffer_end,
				  8 + ((end - start) + 1)*4)) {
			memcpy(ptr, &(start) , 4);
			ptr += 4;
			memcpy(ptr, &(end), 4);
			ptr += 4;
			memcpy(ptr, &(end), 4); /* create actual_last entry */
			ptr += 4;
			pr_debug("diag: adding NEW ssid start %d, end %d\n",
								 start, end);
			memcpy(ptr, buf , ((end - start) + 1)*4);
		} else
			pr_alert("diag: Not enough buffer space for MSG_MASK\n");
	}
	mutex_unlock(&driver->diagchar_mutex);
	diag_print_mask_table();
}

開發者ID:Adrioid83，項目名稱:jflte_xxx，代碼行數:58，代碼來源:diag_masks.c

示例2: diag_update_log_mask

static void diag_update_log_mask(int equip_id, uint8_t *buf, int num_items)
{
	uint8_t *temp = buf;
	int i = 0;
	unsigned char *ptr_data;
	int offset = (sizeof(struct mask_info))*MAX_EQUIP_ID;
	struct mask_info *ptr = (struct mask_info *)(driver->log_masks);

	pr_debug("diag: received equip id = %d\n", equip_id);
	mutex_lock(&driver->diagchar_mutex);
	/* Check if we already know index of this equipment ID */
	for (i = 0; i < MAX_EQUIP_ID; i++) {
		if ((ptr->equip_id == equip_id) && (ptr->index != 0)) {
			offset = ptr->index;
			break;
		}
		if ((ptr->equip_id == 0) && (ptr->index == 0)) {
			/* Reached a null entry */
			ptr->equip_id = equip_id;
			ptr->num_items = num_items;
			ptr->index = driver->log_masks_length;
			offset = driver->log_masks_length;
			driver->log_masks_length += ((num_items+7)/8);
			break;
		}
		ptr++;
	}
	ptr_data = driver->log_masks + offset;
	if (CHK_OVERFLOW(driver->log_masks, ptr_data, driver->log_masks
					 + LOG_MASK_SIZE, (num_items+7)/8))
		memcpy(ptr_data, temp , (num_items+7)/8);
	else
		pr_err("diag: Not enough buffer space for LOG_MASK\n");
	mutex_unlock(&driver->diagchar_mutex);
}

開發者ID:Adrioid83，項目名稱:jflte_xxx，代碼行數:35，代碼來源:diag_masks.c

示例3: diag_update_log_mask

static void diag_update_log_mask(uint8_t *buf, int num_items)
{
	uint8_t *ptr = driver->log_masks;
	uint8_t *temp = buf;

	mutex_lock(&driver->diagchar_mutex);
	if (CHK_OVERFLOW(ptr, ptr, ptr + LOG_MASK_SIZE,
				  (num_items+7)/8))
		memcpy(ptr, temp , (num_items+7)/8);
	else
		printk(KERN_CRIT " Not enough buffer space for LOG_MASK\n");
	mutex_unlock(&driver->diagchar_mutex);
}

開發者ID:AntonioPT，項目名稱:u8150-kernel-pulse-port，代碼行數:13，代碼來源:diagfwd.c

示例4: diag_update_event_mask

static void diag_update_event_mask(uint8_t *buf, int num_bytes)
{
	uint8_t *ptr = driver->event_masks;
	uint8_t *temp = buf + 2;

	mutex_lock(&driver->diagchar_mutex);
	if (CHK_OVERFLOW(ptr, ptr, ptr+EVENT_MASK_SIZE, num_bytes)) {
		memcpy(ptr, temp, num_bytes);
		driver->event_status = DIAG_CTRL_MASK_VALID;
	} else {
		pr_err("diag: In %s, not enough buffer space\n", __func__);
	}
	mutex_unlock(&driver->diagchar_mutex);
}

開發者ID:Hani-K，項目名稱:H-Vitamin，代碼行數:14，代碼來源:diag_masks.c

示例5: diag_update_event_mask

static void diag_update_event_mask(uint8_t *buf, int toggle, int num_bytes)
{
	uint8_t *ptr = driver->event_masks;
	uint8_t *temp = buf + 2;

	mutex_lock(&driver->diagchar_mutex);
	if (!toggle)
		memset(ptr, 0 , EVENT_MASK_SIZE);
	else
		if (CHK_OVERFLOW(ptr, ptr,
				 ptr+EVENT_MASK_SIZE, num_bytes))
			memcpy(ptr, temp , num_bytes);
		else
			printk(KERN_CRIT "Not enough buffer space for EVENT_MASK\n");
	mutex_unlock(&driver->diagchar_mutex);
}

開發者ID:Adrioid83，項目名稱:jflte_xxx，代碼行數:16，代碼來源:diag_masks.c

示例6: diag_update_msg_mask

static void diag_update_msg_mask(int start, int end , uint8_t *buf)
{
	int found = 0, first, last, actual_last;
	uint8_t *actual_last_ptr;
	uint8_t *ptr = driver->msg_masks;
	uint8_t *ptr_buffer_start = &(*(driver->msg_masks));
	uint8_t *ptr_buffer_end = &(*(driver->msg_masks)) + MSG_MASK_SIZE;
	uint32_t copy_len = (end - start + 1) * sizeof(int);

	mutex_lock(&driver->diagchar_mutex);

	
	while (*(uint32_t *)(ptr + 4)) {
		first = *(uint32_t *)ptr;
		ptr += 4;
		last = *(uint32_t *)ptr;
		ptr += 4;
		actual_last = *(uint32_t *)ptr;
		actual_last_ptr = ptr;
		ptr += 4;
		if (start >= first && start <= actual_last) {
			ptr += (start - first)*4;
			if (end > actual_last) {
				pr_info("diag: ssid range mismatch\n");
				actual_last = end;
				*(uint32_t *)(actual_last_ptr) = end;
			}
			if (actual_last-first >= MAX_SSID_PER_RANGE) {
				pr_err("diag: In %s, truncating ssid range, %d-%d to max allowed: %d",
					__func__, first, actual_last,
					MAX_SSID_PER_RANGE);
				copy_len = MAX_SSID_PER_RANGE;
				actual_last = first + MAX_SSID_PER_RANGE;
				*(uint32_t *)actual_last_ptr = actual_last;
			}
			if (CHK_OVERFLOW(ptr_buffer_start, ptr, ptr_buffer_end,
					  (((end - start)+1)*4))) {
				pr_debug("diag: update ssid start %d, end %d\n",
								 start, end);
				memcpy(ptr, buf , copy_len);
			} else
				pr_alert("diag: Not enough space MSG_MASK\n");
			found = 1;
			break;
		} else {
			ptr += MAX_SSID_PER_RANGE*4;
		}
	}
	
	if (!found) {
		if (CHK_OVERFLOW(ptr_buffer_start, ptr, ptr_buffer_end,
				  8 + ((end - start) + 1)*4)) {
			memcpy(ptr, &(start) , 4);
			ptr += 4;
			memcpy(ptr, &(end), 4);
			ptr += 4;
			memcpy(ptr, &(end), 4); 
			ptr += 4;
			pr_debug("diag: adding NEW ssid start %d, end %d\n",
								 start, end);
			memcpy(ptr, buf , ((end - start) + 1)*4);
		} else
			pr_alert("diag: Not enough buffer space for MSG_MASK\n");
	}
	driver->msg_status = DIAG_CTRL_MASK_VALID;
	mutex_unlock(&driver->diagchar_mutex);
	diag_print_mask_table();
}

開發者ID:DirtyDroidX，項目名稱:android_kernel_htc_m8ul，代碼行數:68，代碼來源:diag_masks.c

示例7: diag_update_msg_mask

static void diag_update_msg_mask(int start, int end , uint8_t *buf)
{
	int found = 0;
	int first;
	int last;
	uint8_t *ptr = driver->msg_masks;
	uint8_t *ptr_buffer_start = &(*(driver->msg_masks));
	uint8_t *ptr_buffer_end = &(*(driver->msg_masks)) + MSG_MASK_SIZE;

	mutex_lock(&driver->diagchar_mutex);
	/* First SSID can be zero : So check that last is non-zero */

	while (*(uint32_t *)(ptr + 4)) {
		first = *(uint32_t *)ptr;
		ptr += 4;
		last = *(uint32_t *)ptr;
		ptr += 4;
		if (start >= first && start <= last) {
			ptr += (start - first)*4;
			if (end <= last)
				if (CHK_OVERFLOW(ptr_buffer_start, ptr,
						  ptr_buffer_end,
						  (((end - start)+1)*4)))
					memcpy(ptr, buf , ((end - start)+1)*4);
				else
					printk(KERN_CRIT "Not enough"
							 " buffer space for"
							 " MSG_MASK\n");
			else
				printk(KERN_INFO "Unable to copy"
						 " mask change\n");

			found = 1;
			break;
		} else {
			ptr += ((last - first) + 1)*4;
		}
	}
	/* Entry was not found - add new table */
	if (!found) {
		if (CHK_OVERFLOW(ptr_buffer_start, ptr, ptr_buffer_end,
				  8 + ((end - start) + 1)*4)) {
			memcpy(ptr, &(start) , 4);
			ptr += 4;
			memcpy(ptr, &(end), 4);
			ptr += 4;
			memcpy(ptr, buf , ((end - start) + 1)*4);
		} else
			printk(KERN_CRIT " Not enough buffer"
					 " space for MSG_MASK\n");
	}
	mutex_unlock(&driver->diagchar_mutex);
	diag_print_mask_table();

#ifdef CONFIG_LGE_DIAG
	if(ptr[(LGE_DIAG_ICD_LOGGING_SSID-start)*4] == LGE_DIAG_ICD_LOGGING_SSID_MASK)
	{
		if(key_touch_logging_status == 0) 
		{
			printk(KERN_INFO "[SLATE] %s : enable hard key press & pan tap event logging\n",__func__);
			key_touch_logging_status = 1;
		}
	}
	else
	{
		if(key_touch_logging_status == 1)
		{
			printk(KERN_INFO "[SLATE] %s : disable hard key press & pan tap event logging\n",__func__);
			key_touch_logging_status = 0;
		}
	}
#endif /*CONFIG_LGE_DIAG*/
}

開發者ID:downthemachine，項目名稱:VM696-Kernel，代碼行數:73，代碼來源:diagfwd.c

注：本文中的CHK_OVERFLOW函數示例由純淨天空整理自Github/MSDocs等開源代碼及文檔管理平台，相關代碼片段篩選自各路編程大神貢獻的開源項目，源碼版權歸原作者所有，傳播和使用請參考對應項目的License；未經允許，請勿轉載。