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authorLinus Torvalds <torvalds@linux-foundation.org>2008-10-23 12:04:37 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-23 12:04:37 -0700
commit88ed86fee6651033de9b7038dac7869a9f19775a (patch)
tree38b638d2e7cba110ec271275738f221feb7e0a37 /fs/proc/devices.c
parent3856d30ded1fe43c6657927ebad402d25cd128f4 (diff)
parent59c7572e82d69483a66eaa67b46548baeb69ecf4 (diff)
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Merge branch 'proc' of git://git.kernel.org/pub/scm/linux/kernel/git/adobriyan/proc
* 'proc' of git://git.kernel.org/pub/scm/linux/kernel/git/adobriyan/proc: (35 commits) proc: remove fs/proc/proc_misc.c proc: move /proc/vmcore creation to fs/proc/vmcore.c proc: move pagecount stuff to fs/proc/page.c proc: move all /proc/kcore stuff to fs/proc/kcore.c proc: move /proc/schedstat boilerplate to kernel/sched_stats.h proc: move /proc/modules boilerplate to kernel/module.c proc: move /proc/diskstats boilerplate to block/genhd.c proc: move /proc/zoneinfo boilerplate to mm/vmstat.c proc: move /proc/vmstat boilerplate to mm/vmstat.c proc: move /proc/pagetypeinfo boilerplate to mm/vmstat.c proc: move /proc/buddyinfo boilerplate to mm/vmstat.c proc: move /proc/vmallocinfo to mm/vmalloc.c proc: move /proc/slabinfo boilerplate to mm/slub.c, mm/slab.c proc: move /proc/slab_allocators boilerplate to mm/slab.c proc: move /proc/interrupts boilerplate code to fs/proc/interrupts.c proc: move /proc/stat to fs/proc/stat.c proc: move rest of /proc/partitions code to block/genhd.c proc: move /proc/cpuinfo code to fs/proc/cpuinfo.c proc: move /proc/devices code to fs/proc/devices.c proc: move rest of /proc/locks to fs/locks.c ...
Diffstat (limited to 'fs/proc/devices.c')
-rw-r--r--fs/proc/devices.c70
1 files changed, 70 insertions, 0 deletions
diff --git a/fs/proc/devices.c b/fs/proc/devices.c
new file mode 100644
index 000000000000..59ee7da959c9
--- /dev/null
+++ b/fs/proc/devices.c
@@ -0,0 +1,70 @@
+#include <linux/fs.h>
+#include <linux/init.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+
+static int devinfo_show(struct seq_file *f, void *v)
+{
+ int i = *(loff_t *) v;
+
+ if (i < CHRDEV_MAJOR_HASH_SIZE) {
+ if (i == 0)
+ seq_printf(f, "Character devices:\n");
+ chrdev_show(f, i);
+ }
+#ifdef CONFIG_BLOCK
+ else {
+ i -= CHRDEV_MAJOR_HASH_SIZE;
+ if (i == 0)
+ seq_printf(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_HASH_SIZE + CHRDEV_MAJOR_HASH_SIZE))
+ return pos;
+ return NULL;
+}
+
+static void *devinfo_next(struct seq_file *f, void *v, loff_t *pos)
+{
+ (*pos)++;
+ if (*pos >= (BLKDEV_MAJOR_HASH_SIZE + CHRDEV_MAJOR_HASH_SIZE))
+ 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 devinfo_open(struct inode *inode, struct file *filp)
+{
+ return seq_open(filp, &devinfo_ops);
+}
+
+static const struct file_operations proc_devinfo_operations = {
+ .open = devinfo_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
+static int __init proc_devices_init(void)
+{
+ proc_create("devices", 0, NULL, &proc_devinfo_operations);
+ return 0;
+}
+module_init(proc_devices_init);