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OpenCloudOS-Kernel
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Convert /proc/device-tree/ to seq_file 

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Alexey Dobriyan 2009-09-06 23:31:25 +00:00 committed by Benjamin Herrenschmidt
parent 5a1eb5c445
commit e22f628395
1 changed files with 21 additions and 20 deletions
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41
fs/proc/proc_devtree.c
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@ -7,6 +7,7 @@
#include <linux/init.h>
#include <linux/time.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/stat.h>
#include <linux/string.h>
#include <asm/prom.h>
@ -25,26 +26,27 @@ static struct proc_dir_entry *proc_device_tree;
/*
* Supply data on a read from /proc/device-tree/node/property.
*/
static int property_read_proc(char *page, char **start, off_t off,
int count, int *eof, void *data)
static int property_proc_show(struct seq_file *m, void *v)
{
struct property *pp = data;
int n;
struct property *pp = m->private;
if (off >= pp->length) {
*eof = 1;
return 0;
}
n = pp->length - off;
if (n > count)
n = count;
else
*eof = 1;
memcpy(page, (char *)pp->value + off, n);
*start = page;
return n;
seq_write(m, pp->value, pp->length);
return 0;
}
static int property_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, property_proc_show, PDE(inode)->data);
}
static const struct file_operations property_proc_fops = {
.owner = THIS_MODULE,
.open = property_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
/*
* For a node with a name like "gc@10", we make symlinks called "gc"
* and "@10" to it.
@ -63,10 +65,9 @@ __proc_device_tree_add_prop(struct proc_dir_entry *de, struct property *pp,
* Unfortunately proc_register puts each new entry
* at the beginning of the list. So we rearrange them.
*/
ent = create_proc_read_entry(name,
strncmp(name, "security-", 9)
? S_IRUGO : S_IRUSR, de,
property_read_proc, pp);
ent = proc_create_data(name,
strncmp(name, "security-", 9) ? S_IRUGO : S_IRUSR,
de, &property_proc_fops, pp);
if (ent == NULL)
return NULL;