printf: Remove unused 'bprintf'
[drm/drm-misc.git] / fs / proc / devices.c
blobfe7bfcb7d0494251de4efa9f9964043623f43b42
1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/fs.h>
3 #include <linux/init.h>
4 #include <linux/proc_fs.h>
5 #include <linux/seq_file.h>
6 #include <linux/blkdev.h>
7 #include "internal.h"
9 static int devinfo_show(struct seq_file *f, void *v)
11 int i = *(loff_t *) v;
13 if (i < CHRDEV_MAJOR_MAX) {
14 if (i == 0)
15 seq_puts(f, "Character devices:\n");
16 chrdev_show(f, i);
18 #ifdef CONFIG_BLOCK
19 else {
20 i -= CHRDEV_MAJOR_MAX;
21 if (i == 0)
22 seq_puts(f, "\nBlock devices:\n");
23 blkdev_show(f, i);
25 #endif
26 return 0;
29 static void *devinfo_start(struct seq_file *f, loff_t *pos)
31 if (*pos < (BLKDEV_MAJOR_MAX + CHRDEV_MAJOR_MAX))
32 return pos;
33 return NULL;
36 static void *devinfo_next(struct seq_file *f, void *v, loff_t *pos)
38 (*pos)++;
39 if (*pos >= (BLKDEV_MAJOR_MAX + CHRDEV_MAJOR_MAX))
40 return NULL;
41 return pos;
44 static void devinfo_stop(struct seq_file *f, void *v)
46 /* Nothing to do */
49 static const struct seq_operations devinfo_ops = {
50 .start = devinfo_start,
51 .next = devinfo_next,
52 .stop = devinfo_stop,
53 .show = devinfo_show
56 static int __init proc_devices_init(void)
58 struct proc_dir_entry *pde;
60 pde = proc_create_seq("devices", 0, NULL, &devinfo_ops);
61 pde_make_permanent(pde);
62 return 0;
64 fs_initcall(proc_devices_init);