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Improve fops a bit more

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Ciro Santilli
2017-05-12 18:09:32 +01:00
parent 2f77a45f63
commit 8616f6009b
2 changed files with 15 additions and 3 deletions
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7
kernel_module/fops.c
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@@ -30,13 +30,18 @@ int fop_open(struct inode *inode, struct file *file)
ssize_t fop_read(struct file *file, char __user *buf, size_t len, loff_t *off)
{
printk(KERN_INFO "read\n");
printk(KERN_INFO "len = %zu\n", len);
/* TODO. */
/*copy_to_user(arg, &msg, size);*/
return 0;
}
ssize_t fop_write(struct file *file, const char __user *buf, size_t len, loff_t *off)
{
printk(KERN_INFO "write\n");
return 0;
printk(KERN_INFO "buf = %.*s\n", (int)len, buf);
printk(KERN_INFO "len = %zu\n", len);
return len;
}
/*