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path: root/drivers/misc/ibmasm/ibmasmfs.c
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Diffstat (limited to 'drivers/misc/ibmasm/ibmasmfs.c')
-rw-r--r--drivers/misc/ibmasm/ibmasmfs.c68
1 files changed, 31 insertions, 37 deletions
diff --git a/drivers/misc/ibmasm/ibmasmfs.c b/drivers/misc/ibmasm/ibmasmfs.c
index aecf40ecb3a4..e8b933111e0d 100644
--- a/drivers/misc/ibmasm/ibmasmfs.c
+++ b/drivers/misc/ibmasm/ibmasmfs.c
@@ -17,7 +17,7 @@
*
* Copyright (C) IBM Corporation, 2004
*
- * Author: Max Asböck <amax@us.ibm.com>
+ * Author: Max Asböck <amax@us.ibm.com>
*
*/
@@ -29,7 +29,7 @@
/*
* The IBMASM file virtual filesystem. It creates the following hierarchy
- * dymamically when mounted from user space:
+ * dynamically when mounted from user space:
*
* /ibmasm
* |-- 0
@@ -75,6 +75,7 @@
#include <linux/fs.h>
#include <linux/pagemap.h>
+#include <linux/slab.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#include "ibmasm.h"
@@ -86,15 +87,14 @@
static LIST_HEAD(service_processors);
static struct inode *ibmasmfs_make_inode(struct super_block *sb, int mode);
-static void ibmasmfs_create_files (struct super_block *sb, struct dentry *root);
+static void ibmasmfs_create_files (struct super_block *sb);
static int ibmasmfs_fill_super (struct super_block *sb, void *data, int silent);
-static int ibmasmfs_get_super(struct file_system_type *fst,
- int flags, const char *name, void *data,
- struct vfsmount *mnt)
+static struct dentry *ibmasmfs_mount(struct file_system_type *fst,
+ int flags, const char *name, void *data)
{
- return get_sb_single(fst, flags, data, ibmasmfs_fill_super, mnt);
+ return mount_single(fst, flags, data, ibmasmfs_fill_super);
}
static const struct super_operations ibmasmfs_s_ops = {
@@ -107,14 +107,14 @@ static const struct file_operations *ibmasmfs_dir_ops = &simple_dir_operations;
static struct file_system_type ibmasmfs_type = {
.owner = THIS_MODULE,
.name = "ibmasmfs",
- .get_sb = ibmasmfs_get_super,
+ .mount = ibmasmfs_mount,
.kill_sb = kill_litter_super,
};
+MODULE_ALIAS_FS("ibmasmfs");
static int ibmasmfs_fill_super (struct super_block *sb, void *data, int silent)
{
struct inode *root;
- struct dentry *root_dentry;
sb->s_blocksize = PAGE_CACHE_SIZE;
sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
@@ -129,14 +129,11 @@ static int ibmasmfs_fill_super (struct super_block *sb, void *data, int silent)
root->i_op = &simple_dir_inode_operations;
root->i_fop = ibmasmfs_dir_ops;
- root_dentry = d_alloc_root(root);
- if (!root_dentry) {
- iput(root);
+ sb->s_root = d_make_root(root);
+ if (!sb->s_root)
return -ENOMEM;
- }
- sb->s_root = root_dentry;
- ibmasmfs_create_files(sb, root_dentry);
+ ibmasmfs_create_files(sb);
return 0;
}
@@ -145,14 +142,14 @@ static struct inode *ibmasmfs_make_inode(struct super_block *sb, int mode)
struct inode *ret = new_inode(sb);
if (ret) {
+ ret->i_ino = get_next_ino();
ret->i_mode = mode;
ret->i_atime = ret->i_mtime = ret->i_ctime = CURRENT_TIME;
}
return ret;
}
-static struct dentry *ibmasmfs_create_file (struct super_block *sb,
- struct dentry *parent,
+static struct dentry *ibmasmfs_create_file(struct dentry *parent,
const char *name,
const struct file_operations *fops,
void *data,
@@ -165,7 +162,7 @@ static struct dentry *ibmasmfs_create_file (struct super_block *sb,
if (!dentry)
return NULL;
- inode = ibmasmfs_make_inode(sb, S_IFREG | mode);
+ inode = ibmasmfs_make_inode(parent->d_sb, S_IFREG | mode);
if (!inode) {
dput(dentry);
return NULL;
@@ -178,8 +175,7 @@ static struct dentry *ibmasmfs_create_file (struct super_block *sb,
return dentry;
}
-static struct dentry *ibmasmfs_create_dir (struct super_block *sb,
- struct dentry *parent,
+static struct dentry *ibmasmfs_create_dir(struct dentry *parent,
const char *name)
{
struct dentry *dentry;
@@ -189,7 +185,7 @@ static struct dentry *ibmasmfs_create_dir (struct super_block *sb,
if (!dentry)
return NULL;
- inode = ibmasmfs_make_inode(sb, S_IFDIR | 0500);
+ inode = ibmasmfs_make_inode(parent->d_sb, S_IFDIR | 0500);
if (!inode) {
dput(dentry);
return NULL;
@@ -503,12 +499,6 @@ static ssize_t r_heartbeat_file_write(struct file *file, const char __user *buf,
return 1;
}
-static int remote_settings_file_open(struct inode *inode, struct file *file)
-{
- file->private_data = inode->i_private;
- return 0;
-}
-
static int remote_settings_file_close(struct inode *inode, struct file *file)
{
return 0;
@@ -583,6 +573,7 @@ static const struct file_operations command_fops = {
.release = command_file_close,
.read = command_file_read,
.write = command_file_write,
+ .llseek = generic_file_llseek,
};
static const struct file_operations event_fops = {
@@ -590,6 +581,7 @@ static const struct file_operations event_fops = {
.release = event_file_close,
.read = event_file_read,
.write = event_file_write,
+ .llseek = generic_file_llseek,
};
static const struct file_operations r_heartbeat_fops = {
@@ -597,17 +589,19 @@ static const struct file_operations r_heartbeat_fops = {
.release = r_heartbeat_file_close,
.read = r_heartbeat_file_read,
.write = r_heartbeat_file_write,
+ .llseek = generic_file_llseek,
};
static const struct file_operations remote_settings_fops = {
- .open = remote_settings_file_open,
+ .open = simple_open,
.release = remote_settings_file_close,
.read = remote_settings_file_read,
.write = remote_settings_file_write,
+ .llseek = generic_file_llseek,
};
-static void ibmasmfs_create_files (struct super_block *sb, struct dentry *root)
+static void ibmasmfs_create_files (struct super_block *sb)
{
struct list_head *entry;
struct service_processor *sp;
@@ -616,20 +610,20 @@ static void ibmasmfs_create_files (struct super_block *sb, struct dentry *root)
struct dentry *dir;
struct dentry *remote_dir;
sp = list_entry(entry, struct service_processor, node);
- dir = ibmasmfs_create_dir(sb, root, sp->dirname);
+ dir = ibmasmfs_create_dir(sb->s_root, sp->dirname);
if (!dir)
continue;
- ibmasmfs_create_file(sb, dir, "command", &command_fops, sp, S_IRUSR|S_IWUSR);
- ibmasmfs_create_file(sb, dir, "event", &event_fops, sp, S_IRUSR|S_IWUSR);
- ibmasmfs_create_file(sb, dir, "reverse_heartbeat", &r_heartbeat_fops, sp, S_IRUSR|S_IWUSR);
+ ibmasmfs_create_file(dir, "command", &command_fops, sp, S_IRUSR|S_IWUSR);
+ ibmasmfs_create_file(dir, "event", &event_fops, sp, S_IRUSR|S_IWUSR);
+ ibmasmfs_create_file(dir, "reverse_heartbeat", &r_heartbeat_fops, sp, S_IRUSR|S_IWUSR);
- remote_dir = ibmasmfs_create_dir(sb, dir, "remote_video");
+ remote_dir = ibmasmfs_create_dir(dir, "remote_video");
if (!remote_dir)
continue;
- ibmasmfs_create_file(sb, remote_dir, "width", &remote_settings_fops, (void *)display_width(sp), S_IRUSR|S_IWUSR);
- ibmasmfs_create_file(sb, remote_dir, "height", &remote_settings_fops, (void *)display_height(sp), S_IRUSR|S_IWUSR);
- ibmasmfs_create_file(sb, remote_dir, "depth", &remote_settings_fops, (void *)display_depth(sp), S_IRUSR|S_IWUSR);
+ ibmasmfs_create_file(remote_dir, "width", &remote_settings_fops, (void *)display_width(sp), S_IRUSR|S_IWUSR);
+ ibmasmfs_create_file(remote_dir, "height", &remote_settings_fops, (void *)display_height(sp), S_IRUSR|S_IWUSR);
+ ibmasmfs_create_file(remote_dir, "depth", &remote_settings_fops, (void *)display_depth(sp), S_IRUSR|S_IWUSR);
}
}
generated by cgit (git 2.34.1) at 2025-08-11 22:26:56 +0000