kernel module: format, use tab to indent.

Author: reveriel

kernel_modules/character_device_create.c

@@ -33,42 +33,42 @@ static const struct file_operations fops = {
 
 static void cleanup(int device_created)
 {
-    if (device_created) {
-        device_destroy(myclass, major);
-        cdev_del(&mycdev);
-    }
-    if (myclass)
-        class_destroy(myclass);
-    if (major != -1)
-        unregister_chrdev_region(major, 1);
+	if (device_created) {
+		device_destroy(myclass, major);
+		cdev_del(&mycdev);
+	}
+	if (myclass)
+		class_destroy(myclass);
+	if (major != -1)
+		unregister_chrdev_region(major, 1);
 }
 
 static int myinit(void)
 {
-    int device_created = 0;
+	int device_created = 0;
 
-    /* cat /proc/devices */
-    if (alloc_chrdev_region(&major, 0, 1, NAME "_proc") < 0)
-        goto error;
-    /* ls /sys/class */
-    if ((myclass = class_create(THIS_MODULE, NAME "_sys")) == NULL)
-        goto error;
-    /* ls /dev/ */
-    if (device_create(myclass, NULL, major, NULL, NAME "_dev") == NULL)
-        goto error;
-    device_created = 1;
-    cdev_init(&mycdev, &fops);
-    if (cdev_add(&mycdev, major, 1) == -1)
-        goto error;
-    return 0;
+	/* cat /proc/devices */
+	if (alloc_chrdev_region(&major, 0, 1, NAME "_proc") < 0)
+		goto error;
+	/* ls /sys/class */
+	if ((myclass = class_create(THIS_MODULE, NAME "_sys")) == NULL)
+		goto error;
+	/* ls /dev/ */
+	if (device_create(myclass, NULL, major, NULL, NAME "_dev") == NULL)
+		goto error;
+	device_created = 1;
+	cdev_init(&mycdev, &fops);
+	if (cdev_add(&mycdev, major, 1) == -1)
+		goto error;
+	return 0;
 error:
-    cleanup(device_created);
-    return -1;
+	cleanup(device_created);
+	return -1;
 }
 
 static void myexit(void)
 {
-    cleanup(1);
+	cleanup(1);
 }
 
 module_init(myinit)

kernel_modules/memcpy_overflow.c

@@ -8,8 +8,8 @@
 static int myinit(void)
 {
 	void *dst, *src;
-    dst = kmalloc(0x10, GFP_KERNEL);
-    src = kmalloc(0x1000000, GFP_KERNEL);
+	dst = kmalloc(0x10, GFP_KERNEL);
+	src = kmalloc(0x1000000, GFP_KERNEL);
 	memcpy(dst, src, 0x1000000);
 	return 0;
 }

kernel_modules/mmap.c

@@ -24,7 +24,7 @@ static void vm_close(struct vm_area_struct *vma)
 }
 
 /* First page access. */
-	int (*fault)(struct vm_fault *vmf);
+int (*fault)(struct vm_fault *vmf);
 static int vm_fault(struct vm_fault *vmf)
 {
 	struct page *page;
@@ -79,13 +79,13 @@ static int open(struct inode *inode, struct file *filp)
 static ssize_t read(struct file *filp, char __user *buf, size_t len, loff_t *off)
 {
 	struct mmap_info *info;
-    int ret;
+	int ret;
 
 	pr_info("read\n");
 	info = filp->private_data;
-    ret = min(len, (size_t)BUFFER_SIZE);
-    if (copy_to_user(buf, info->data, ret)) {
-        ret = -EFAULT;
+	ret = min(len, (size_t)BUFFER_SIZE);
+	if (copy_to_user(buf, info->data, ret)) {
+		ret = -EFAULT;
 	}
 	return ret;
 }
@@ -96,11 +96,11 @@ static ssize_t write(struct file *filp, const char __user *buf, size_t len, loff
 
 	pr_info("write\n");
 	info = filp->private_data;
-    if (copy_from_user(info->data, buf, min(len, (size_t)BUFFER_SIZE))) {
-        return -EFAULT;
-    } else {
-        return len;
-    }
+	if (copy_from_user(info->data, buf, min(len, (size_t)BUFFER_SIZE))) {
+		return -EFAULT;
+	} else {
+		return len;
+	}
 }
 
 static int release(struct inode *inode, struct file *filp)

kernel_modules/netlink.c

@@ -18,47 +18,47 @@ static void callback(struct sk_buff *skb)
 {
 	char readbuf[9];
 	size_t readbuflen;
-    int pid;
-    int res;
-    struct nlmsghdr *nlh;
-    struct sk_buff *skb_out;
+	int pid;
+	int res;
+	struct nlmsghdr *nlh;
+	struct sk_buff *skb_out;
 
-    nlh = (struct nlmsghdr *)skb->data;
-    pr_info("kernel received: %s\n", (char *)nlmsg_data(nlh));
+	nlh = (struct nlmsghdr *)skb->data;
+	pr_info("kernel received: %s\n", (char *)nlmsg_data(nlh));
 	if (sleep)
 		usleep_range(1000000, 1000001);
 	readbuflen = snprintf(readbuf, sizeof(readbuf), "%x", count);
-    count++;
-    pid = nlh->nlmsg_pid;
-    skb_out = nlmsg_new(readbuflen, 0);
-    if (!skb_out) {
-        pr_err("nlmsg_new\n");
-        return;
-    }
-    nlh = nlmsg_put(skb_out, 0, 0, NLMSG_DONE, readbuflen, 0);
-    NETLINK_CB(skb_out).dst_group = 0;
-    strncpy(nlmsg_data(nlh), readbuf, readbuflen);
-    res = nlmsg_unicast(nl_sk, skb_out, pid);
-    if (res < 0)
-        pr_info("nlmsg_unicast\n");
+	count++;
+	pid = nlh->nlmsg_pid;
+	skb_out = nlmsg_new(readbuflen, 0);
+	if (!skb_out) {
+		pr_err("nlmsg_new\n");
+		return;
+	}
+	nlh = nlmsg_put(skb_out, 0, 0, NLMSG_DONE, readbuflen, 0);
+	NETLINK_CB(skb_out).dst_group = 0;
+	strncpy(nlmsg_data(nlh), readbuf, readbuflen);
+	res = nlmsg_unicast(nl_sk, skb_out, pid);
+	if (res < 0)
+		pr_info("nlmsg_unicast\n");
 }
 
 static int myinit(void)
 {
-    struct netlink_kernel_cfg cfg = {
-        .input = callback,
-    };
-    nl_sk = netlink_kernel_create(&init_net, NETLINK_USER, &cfg);
-    if (!nl_sk) {
-        pr_err("netlink_kernel_create\n");
-        return -10;
-    }
-    return 0;
+	struct netlink_kernel_cfg cfg = {
+		.input = callback,
+	};
+	nl_sk = netlink_kernel_create(&init_net, NETLINK_USER, &cfg);
+	if (!nl_sk) {
+		pr_err("netlink_kernel_create\n");
+		return -10;
+	}
+	return 0;
 }
 
 static void myexit(void)
 {
-    netlink_kernel_release(nl_sk);
+	netlink_kernel_release(nl_sk);
 }
 
 module_init(myinit);

kernel_modules/pci_min.c

@@ -15,75 +15,75 @@
 #define QEMU_VENDOR_ID 0x1234
 
 static struct pci_device_id id_table[] = {
-    { PCI_DEVICE(QEMU_VENDOR_ID, EDU_DEVICE_ID), },
-    { 0, }
+	{ PCI_DEVICE(QEMU_VENDOR_ID, EDU_DEVICE_ID), },
+	{ 0, }
 };
 MODULE_DEVICE_TABLE(pci, id_table);
 static int major;
 static struct pci_dev *pdev;
 static void __iomem *mmio;
 static struct file_operations fops = {
-    .owner   = THIS_MODULE,
+	.owner   = THIS_MODULE,
 };
 
 static irqreturn_t irq_handler(int irq, void *dev)
 {
-    pr_info("irq_handler irq = %d dev = %d\n", irq, *(int *)dev);
-    iowrite32(0, mmio + 4);
-    return IRQ_HANDLED;
+	pr_info("irq_handler irq = %d dev = %d\n", irq, *(int *)dev);
+	iowrite32(0, mmio + 4);
+	return IRQ_HANDLED;
 }
 
 static int probe(struct pci_dev *dev, const struct pci_device_id *id)
 {
-    pr_info("probe\n");
-    major = register_chrdev(0, CDEV_NAME, &fops);
-    pdev = dev;
-    if (pci_enable_device(dev) < 0) {
-        dev_err(&(pdev->dev), "pci_enable_device\n");
-        goto error;
-    }
-    if (pci_request_region(dev, BAR, "myregion0")) {
-        dev_err(&(pdev->dev), "pci_request_region\n");
-        goto error;
-    }
-    mmio = pci_iomap(pdev, BAR, pci_resource_len(pdev, BAR));
-    pr_info("dev->irq = %u\n", dev->irq);
-    if (request_irq(dev->irq, irq_handler, IRQF_SHARED, "pci_irq_handler0", &major) < 0) {
-        dev_err(&(dev->dev), "request_irq\n");
-        goto error;
-    }
-    iowrite32(0x12345678, mmio);
-    return 0;
+	pr_info("probe\n");
+	major = register_chrdev(0, CDEV_NAME, &fops);
+	pdev = dev;
+	if (pci_enable_device(dev) < 0) {
+		dev_err(&(pdev->dev), "pci_enable_device\n");
+		goto error;
+	}
+	if (pci_request_region(dev, BAR, "myregion0")) {
+		dev_err(&(pdev->dev), "pci_request_region\n");
+		goto error;
+	}
+	mmio = pci_iomap(pdev, BAR, pci_resource_len(pdev, BAR));
+	pr_info("dev->irq = %u\n", dev->irq);
+	if (request_irq(dev->irq, irq_handler, IRQF_SHARED, "pci_irq_handler0", &major) < 0) {
+		dev_err(&(dev->dev), "request_irq\n");
+		goto error;
+	}
+	iowrite32(0x12345678, mmio);
+	return 0;
 error:
-    return 1;
+	return 1;
 }
 
 static void remove(struct pci_dev *dev)
 {
-    pr_info("remove\n");
-    free_irq(dev->irq, &major);
-    pci_release_region(dev, BAR);
-    unregister_chrdev(major, CDEV_NAME);
+	pr_info("remove\n");
+	free_irq(dev->irq, &major);
+	pci_release_region(dev, BAR);
+	unregister_chrdev(major, CDEV_NAME);
 }
 
 static struct pci_driver pci_driver = {
-    .name     = CDEV_NAME,
-    .id_table = id_table,
-    .probe    = probe,
-    .remove   = remove,
+	.name     = CDEV_NAME,
+	.id_table = id_table,
+	.probe    = probe,
+	.remove   = remove,
 };
 
 static int myinit(void)
 {
-    if (pci_register_driver(&pci_driver) < 0) {
-        return 1;
-    }
-    return 0;
+	if (pci_register_driver(&pci_driver) < 0) {
+		return 1;
+	}
+	return 0;
 }
 
 static void myexit(void)
 {
-    pci_unregister_driver(&pci_driver);
+	pci_unregister_driver(&pci_driver);
 }
 
 module_init(myinit);

kernel_modules/ring0.c

@@ -14,7 +14,7 @@ static int myinit(void)
 	pr_info("cr2 = 0x%8.8llX\n", (unsigned long long)ring0_regs.cr2);
 	pr_info("cr3 = 0x%8.8llX\n", (unsigned long long)ring0_regs.cr3);
 #endif
-    return 0;
+	return 0;
 }
 
 static void myexit(void) {}

kernel_modules/seq_file.c

@@ -72,24 +72,24 @@ static int show(struct seq_file *s, void *v)
 }
 
 static struct seq_operations my_seq_ops = {
-    .next  = next,
-    .show  = show,
-    .start = start,
-    .stop  = stop,
+	.next  = next,
+	.show  = show,
+	.start = start,
+	.stop  = stop,
 };
 
 static int open(struct inode *inode, struct file *file)
 {
 	pr_info("open\n");
-    return seq_open(file, &my_seq_ops);
+	return seq_open(file, &my_seq_ops);
 }
 
 static struct file_operations fops = {
-    .owner   = THIS_MODULE,
-    .llseek  = seq_lseek,
-    .open    = open,
-    .read    = seq_read,
-    .release = seq_release
+	.owner   = THIS_MODULE,
+	.llseek  = seq_lseek,
+	.open    = open,
+	.read    = seq_read,
+	.release = seq_release
 };
 
 static int myinit(void)