ide: convert to ->proc_fops
->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>
diff --git a/drivers/ide/ide-disk_proc.c b/drivers/ide/ide-disk_proc.c
index 19f263b..60b0590 100644
--- a/drivers/ide/ide-disk_proc.c
+++ b/drivers/ide/ide-disk_proc.c
@@ -1,5 +1,6 @@
#include <linux/kernel.h>
#include <linux/ide.h>
+#include <linux/seq_file.h>
#include "ide-disk.h"
@@ -37,77 +38,117 @@
return ide_raw_taskfile(drive, &cmd, buf, 1);
}
-static int proc_idedisk_read_cache
- (char *page, char **start, off_t off, int count, int *eof, void *data)
+static int idedisk_cache_proc_show(struct seq_file *m, void *v)
{
- ide_drive_t *drive = (ide_drive_t *) data;
- char *out = page;
- int len;
+ ide_drive_t *drive = (ide_drive_t *) m->private;
if (drive->dev_flags & IDE_DFLAG_ID_READ)
- len = sprintf(out, "%i\n", drive->id[ATA_ID_BUF_SIZE] / 2);
+ seq_printf(m, "%i\n", drive->id[ATA_ID_BUF_SIZE] / 2);
else
- len = sprintf(out, "(none)\n");
-
- PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
+ seq_printf(m, "(none)\n");
+ return 0;
}
-static int proc_idedisk_read_capacity
- (char *page, char **start, off_t off, int count, int *eof, void *data)
+static int idedisk_cache_proc_open(struct inode *inode, struct file *file)
{
- ide_drive_t*drive = (ide_drive_t *)data;
- int len;
-
- len = sprintf(page, "%llu\n", (long long)ide_gd_capacity(drive));
-
- PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
+ return single_open(file, idedisk_cache_proc_show, PDE(inode)->data);
}
-static int proc_idedisk_read_smart(char *page, char **start, off_t off,
- int count, int *eof, void *data, u8 sub_cmd)
+static const struct file_operations idedisk_cache_proc_fops = {
+ .owner = THIS_MODULE,
+ .open = idedisk_cache_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int idedisk_capacity_proc_show(struct seq_file *m, void *v)
{
- ide_drive_t *drive = (ide_drive_t *)data;
- int len = 0, i = 0;
+ ide_drive_t*drive = (ide_drive_t *)m->private;
+
+ seq_printf(m, "%llu\n", (long long)ide_gd_capacity(drive));
+ return 0;
+}
+
+static int idedisk_capacity_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, idedisk_capacity_proc_show, PDE(inode)->data);
+}
+
+static const struct file_operations idedisk_capacity_proc_fops = {
+ .owner = THIS_MODULE,
+ .open = idedisk_capacity_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int __idedisk_proc_show(struct seq_file *m, ide_drive_t *drive, u8 sub_cmd)
+{
+ u8 *buf;
+
+ buf = kmalloc(SECTOR_SIZE, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
(void)smart_enable(drive);
- if (get_smart_data(drive, page, sub_cmd) == 0) {
- unsigned short *val = (unsigned short *) page;
- char *out = (char *)val + SECTOR_SIZE;
+ if (get_smart_data(drive, buf, sub_cmd) == 0) {
+ __le16 *val = (__le16 *)buf;
+ int i;
- page = out;
- do {
- out += sprintf(out, "%04x%c", le16_to_cpu(*val),
- (++i & 7) ? ' ' : '\n');
- val += 1;
- } while (i < SECTOR_SIZE / 2);
- len = out - page;
+ for (i = 0; i < SECTOR_SIZE / 2; i++) {
+ seq_printf(m, "%04x%c", le16_to_cpu(val[i]),
+ (i % 8) == 7 ? '\n' : ' ');
+ }
}
-
- PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
+ kfree(buf);
+ return 0;
}
-static int proc_idedisk_read_sv
- (char *page, char **start, off_t off, int count, int *eof, void *data)
+static int idedisk_sv_proc_show(struct seq_file *m, void *v)
{
- return proc_idedisk_read_smart(page, start, off, count, eof, data,
- ATA_SMART_READ_VALUES);
+ return __idedisk_proc_show(m, m->private, ATA_SMART_READ_VALUES);
}
-static int proc_idedisk_read_st
- (char *page, char **start, off_t off, int count, int *eof, void *data)
+static int idedisk_sv_proc_open(struct inode *inode, struct file *file)
{
- return proc_idedisk_read_smart(page, start, off, count, eof, data,
- ATA_SMART_READ_THRESHOLDS);
+ return single_open(file, idedisk_sv_proc_show, PDE(inode)->data);
}
+static const struct file_operations idedisk_sv_proc_fops = {
+ .owner = THIS_MODULE,
+ .open = idedisk_sv_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int idedisk_st_proc_show(struct seq_file *m, void *v)
+{
+ return __idedisk_proc_show(m, m->private, ATA_SMART_READ_THRESHOLDS);
+}
+
+static int idedisk_st_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, idedisk_st_proc_show, PDE(inode)->data);
+}
+
+static const struct file_operations idedisk_st_proc_fops = {
+ .owner = THIS_MODULE,
+ .open = idedisk_st_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
ide_proc_entry_t ide_disk_proc[] = {
- { "cache", S_IFREG|S_IRUGO, proc_idedisk_read_cache, NULL },
- { "capacity", S_IFREG|S_IRUGO, proc_idedisk_read_capacity, NULL },
- { "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL },
- { "smart_values", S_IFREG|S_IRUSR, proc_idedisk_read_sv, NULL },
- { "smart_thresholds", S_IFREG|S_IRUSR, proc_idedisk_read_st, NULL },
- { NULL, 0, NULL, NULL }
+ { "cache", S_IFREG|S_IRUGO, &idedisk_cache_proc_fops },
+ { "capacity", S_IFREG|S_IRUGO, &idedisk_capacity_proc_fops },
+ { "geometry", S_IFREG|S_IRUGO, &ide_geometry_proc_fops },
+ { "smart_values", S_IFREG|S_IRUSR, &idedisk_sv_proc_fops },
+ { "smart_thresholds", S_IFREG|S_IRUSR, &idedisk_st_proc_fops },
+ {}
};
ide_devset_rw_field(bios_cyl, bios_cyl);