| #include <linux/proc_fs.h> |
| #include <linux/seq_file.h> |
| static int devinfo_show(struct seq_file *f, void *v) |
| if (i < CHRDEV_MAJOR_HASH_SIZE) { |
| seq_printf(f, "Character devices:\n"); |
| i -= CHRDEV_MAJOR_HASH_SIZE; |
| seq_printf(f, "\nBlock devices:\n"); |
| static void *devinfo_start(struct seq_file *f, loff_t *pos) |
| if (*pos < (BLKDEV_MAJOR_HASH_SIZE + CHRDEV_MAJOR_HASH_SIZE)) |
| static void *devinfo_next(struct seq_file *f, void *v, loff_t *pos) |
| if (*pos >= (BLKDEV_MAJOR_HASH_SIZE + CHRDEV_MAJOR_HASH_SIZE)) |
| static void devinfo_stop(struct seq_file *f, void *v) |
| static const struct seq_operations devinfo_ops = { |
| static int devinfo_open(struct inode *inode, struct file *filp) |
| return seq_open(filp, &devinfo_ops); |
| static const struct file_operations proc_devinfo_operations = { |
| static int __init proc_devices_init(void) |
| proc_create("devices", 0, NULL, &proc_devinfo_operations); |
| module_init(proc_devices_init); |