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ide: convert to ->proc_fops

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->read_proc, ->write_proc are going away, ->proc_fops should be used instead.

The only tricky place is IDENTIFY handling: if for some reason
taskfile_lib_get_identify() fails, buffer _is_ changed and at least
first byte is overwritten. Emulate old behaviour with returning
that first byte to userspace and reporting length=1 despite overall -E.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexey Dobriyan
2009-09-01 17:52:57 -07:00
committed by David S. Miller
parent 76fbebfbb5
commit 6d703a81ad
6 changed files with 372 additions and 214 deletions
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30
drivers/ide/ide-floppy_proc.c
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@ -1,22 +1,34 @@
#include <linux/kernel.h>
#include <linux/ide.h>
#include <linux/seq_file.h>
#include "ide-floppy.h"
static int proc_idefloppy_read_capacity(char *page, char **start, off_t off,
int count, int *eof, void *data)
static int idefloppy_capacity_proc_show(struct seq_file *m, void *v)
{
ide_drive_t*drive = (ide_drive_t *)data;
int len;
ide_drive_t*drive = (ide_drive_t *)m->private;
len = sprintf(page, "%llu\n", (long long)ide_gd_capacity(drive));
PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
seq_printf(m, "%llu\n", (long long)ide_gd_capacity(drive));
return 0;
}
static int idefloppy_capacity_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, idefloppy_capacity_proc_show, PDE(inode)->data);
}
static const struct file_operations idefloppy_capacity_proc_fops = {
.owner = THIS_MODULE,
.open = idefloppy_capacity_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
ide_proc_entry_t ide_floppy_proc[] = {
{ "capacity", S_IFREG|S_IRUGO, proc_idefloppy_read_capacity, NULL },
{ "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL },
{ NULL, 0, NULL, NULL }
{ "capacity", S_IFREG|S_IRUGO, &idefloppy_capacity_proc_fops },
{ "geometry", S_IFREG|S_IRUGO, &ide_geometry_proc_fops },
{}
};
ide_devset_rw_field(bios_cyl, bios_cyl);