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format files to comply with kernel coding standards, rename .config to config

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This commit is contained in:
tomoron
2025-08-13 19:45:11 +02:00
parent 2e4d67d510
commit cf0ab7f1db
10 changed files with 97 additions and 83 deletions
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0
00/.config → 00/config
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1
01/main.c
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@ -1,3 +1,4 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/init.h>
#include <linux/module.h>
#include <linux/printk.h>

1
04/hello-world.c
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@ -1,3 +1,4 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/init.h>
#include <linux/module.h>
#include <linux/printk.h>

15
05/main.c
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@ -1,3 +1,4 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/init.h>
#include <linux/module.h>
#include <linux/fs.h>
@ -13,16 +14,16 @@ ssize_t dev_read(struct file *f, char __user *buf, size_t len, loff_t *off);
ssize_t dev_write(struct file *f, const char __user *buf, size_t len, loff_t *off);
static const struct file_operations fops = {
.owner = THIS_MODULE,
.read = dev_read,
.write = dev_write,
.owner = THIS_MODULE,
.read = dev_read,
.write = dev_write,
};
static struct miscdevice dev = {
.minor = MISC_DYNAMIC_MINOR,
.name = FILENAME,
.fops = &fops,
.mode = 0666,
.minor = MISC_DYNAMIC_MINOR,
.name = FILENAME,
.fops = &fops,
.mode = 0666,
};
static int __init fortytwo_init(void)

31
05/rw.c
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@ -1,3 +1,4 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/init.h>
#include <linux/module.h>
#include <linux/fs.h>
@ -9,27 +10,29 @@
ssize_t dev_read(struct file *f, char __user *buf, size_t len, loff_t *off);
ssize_t dev_write(struct file *f, const char __user *buf, size_t len, loff_t *off);
ssize_t dev_read(struct file *f, char __user *buf, size_t len, loff_t *off) {
char msg[] = VALUE;
ssize_t dev_read(struct file *f, char __user *buf, size_t len, loff_t *off)
{
char msg[] = VALUE;
pr_info("someone read from the file\n");
return simple_read_from_buffer(buf, len, off, msg, sizeof(msg) - 1);
return simple_read_from_buffer(buf, len, off, msg, sizeof(msg) - 1);
}
ssize_t dev_write(struct file *f, const char __user *buf, size_t len, loff_t *off)
{
char kbuf[64];
ssize_t dev_write(struct file *f, const char __user *buf, size_t len, loff_t *off) {
char kbuf[64];
if (len > sizeof(kbuf) - 1)
return -EINVAL;
if (copy_from_user(kbuf, buf, len))
return -EINVAL;
if (len > sizeof(kbuf) - 1)
return -EINVAL;
if (copy_from_user(kbuf, buf, len))
return -EINVAL;
kbuf[len] = '\0';
kbuf[len] = '\0';
if (strcmp(kbuf, VALUE) == 0)
{
if (strcmp(kbuf, VALUE) == 0) {
pr_info("someone wrote the right string\n");
return len;
return len;
}
pr_info("someone wrote the wrong string\n");
return -EINVAL;
return -EINVAL;
}

9
07/foo.c
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@ -1,3 +1,4 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/init.h>
#include <linux/module.h>
#include <linux/fs.h>
@ -13,7 +14,7 @@ ssize_t foo_write(struct file *f, const char __user *buf, size_t len, loff_t *of
int init_foo(void);
char buffer[PAGE_SIZE];
size_t buffer_len = 0;
size_t buffer_len;
DEFINE_MUTEX(rw_lock);
static const struct file_operations fops = {
@ -39,8 +40,7 @@ ssize_t foo_write(struct file *f, const char __user *buf, size_t len, loff_t *of
if (len > sizeof(buffer))
return -EINVAL;
mutex_lock(&rw_lock);
if (copy_from_user(buffer, buf, len))
{
if (copy_from_user(buffer, buf, len)) {
mutex_unlock(&rw_lock);
return -EINVAL;
}
@ -55,6 +55,7 @@ int init_foo(void)
mutex_init(&rw_lock);
ret = debugfs_create_file("foo", 0644, module_dir, NULL, &fops);
if (IS_ERR(ret)) return PTR_ERR(ret);
if (IS_ERR(ret))
return PTR_ERR(ret);
return 0;
}

8
07/id.c
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@ -1,3 +1,4 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/init.h>
#include <linux/module.h>
#include <linux/fs.h>
@ -21,6 +22,7 @@ static const struct file_operations fops = {
ssize_t id_read(struct file *f, char __user *buf, size_t len, loff_t *off)
{
char msg[] = VALUE;
pr_info("someone read from the file\n");
return simple_read_from_buffer(buf, len, off, msg, sizeof(msg) - 1);
}
@ -29,6 +31,7 @@ ssize_t id_read(struct file *f, char __user *buf, size_t len, loff_t *off)
ssize_t id_write(struct file *f, const char __user *buf, size_t len, loff_t *off)
{
char kbuf[64];
if (len > sizeof(kbuf) - 1)
return -EINVAL;
if (copy_from_user(kbuf, buf, len))
@ -36,7 +39,7 @@ ssize_t id_write(struct file *f, const char __user *buf, size_t len, loff_t *off
kbuf[len] = '\0';
if (strcmp(kbuf, VALUE) == 0){
if (strcmp(kbuf, VALUE) == 0) {
pr_info("someone wrote the right string\n");
return len;
}
@ -47,8 +50,9 @@ ssize_t id_write(struct file *f, const char __user *buf, size_t len, loff_t *off
int init_id(void)
{
struct dentry *ret;
ret = debugfs_create_file("id", 0666, module_dir, NULL, &fops);
if(IS_ERR(ret))
if (IS_ERR(ret))
return PTR_ERR(ret);
return 0;
}

8
07/main.c
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@ -1,3 +1,4 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/init.h>
#include <linux/module.h>
#include <linux/fs.h>
@ -27,9 +28,11 @@ static int __init fortytwo_debug_init(void)
debugfs_create_u64("jiffies", 0444, module_dir, (uint64_t *)(&jiffies));
err = init_id();
if (err) return err;
if (err)
return err;
err = init_foo();
if(err) return err;
if (err)
return err;
return 0;
}
@ -41,4 +44,3 @@ static void __exit fortytwo_debug_exit(void)
module_init(fortytwo_debug_init);
module_exit(fortytwo_debug_exit);

5
09/main.c
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@ -1,3 +1,4 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
@ -30,7 +31,8 @@ static const struct proc_ops proc_fops = {
static int __init mounts_init(void)
{
proc_file = proc_create("mymounts", 0444, 0, &proc_fops);
if(IS_ERR(proc_file)) return PTR_ERR(proc_file);
if (IS_ERR(proc_file))
return PTR_ERR(proc_file);
return 0;
}
@ -41,4 +43,3 @@ static void __exit mounts_exit(void)
module_init(mounts_init);
module_exit(mounts_exit);

10
09/rw.c
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@ -1,3 +1,4 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/module.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
@ -21,17 +22,16 @@ int list_mounts(struct seq_file *m, void *v)
cur = current->nsproxy->mnt_ns->mnt_first_node;
buf = kmalloc(sizeof(char) * PATH_MAX, GFP_KERNEL);
while(cur)
{
while (cur) {
mnt = rb_entry(cur, struct mount, mnt_node);
struct path p = {
.mnt = &mnt->mnt,
.dentry = mnt->mnt.mnt_root,
.mnt = &mnt->mnt,
.dentry = mnt->mnt.mnt_root,
};
path = d_path(&p, buf, PATH_MAX);
if(IS_ERR(path))
if (IS_ERR(path))
path = 0;
seq_printf(m, "%-10s %s\n", mnt->mnt_devname, path);
cur = rb_next(cur);