Contributors: 5
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Alexey Dobriyan |
240 |
94.86% |
2 |
25.00% |
| Logan Gunthorpe |
6 |
2.37% |
2 |
25.00% |
| Christoph Hellwig |
5 |
1.98% |
2 |
25.00% |
| Paul Gortmaker |
1 |
0.40% |
1 |
12.50% |
| Greg Kroah-Hartman |
1 |
0.40% |
1 |
12.50% |
| Total |
253 |
|
8 |
|
// SPDX-License-Identifier: GPL-2.0
#include <linux/fs.h>
#include <linux/init.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/blkdev.h>
static int devinfo_show(struct seq_file *f, void *v)
{
int i = *(loff_t *) v;
if (i < CHRDEV_MAJOR_MAX) {
if (i == 0)
seq_puts(f, "Character devices:\n");
chrdev_show(f, i);
}
#ifdef CONFIG_BLOCK
else {
i -= CHRDEV_MAJOR_MAX;
if (i == 0)
seq_puts(f, "\nBlock devices:\n");
blkdev_show(f, i);
}
#endif
return 0;
}
static void *devinfo_start(struct seq_file *f, loff_t *pos)
{
if (*pos < (BLKDEV_MAJOR_MAX + CHRDEV_MAJOR_MAX))
return pos;
return NULL;
}
static void *devinfo_next(struct seq_file *f, void *v, loff_t *pos)
{
(*pos)++;
if (*pos >= (BLKDEV_MAJOR_MAX + CHRDEV_MAJOR_MAX))
return NULL;
return pos;
}
static void devinfo_stop(struct seq_file *f, void *v)
{
/* Nothing to do */
}
static const struct seq_operations devinfo_ops = {
.start = devinfo_start,
.next = devinfo_next,
.stop = devinfo_stop,
.show = devinfo_show
};
static int __init proc_devices_init(void)
{
proc_create_seq("devices", 0, NULL, &devinfo_ops);
return 0;
}
fs_initcall(proc_devices_init);