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authorAl Viro <viro@zeniv.linux.org.uk>2013-03-30 01:03:53 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2013-04-09 14:13:08 -0400
commitaf064cdde64d58feb315dba268e1f8439fb935be (patch)
tree1115d561fc96ef1cf63aac3cf888041c7e7166e5
parent08f3d07ddd53ca3bf322ddebc0f8992e3112520f (diff)
dgrp procfs fixes, part 5: per-node files
this "hooks" scheme is pointless - just make file_operations non-static and consolidate initialiazation bits. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
-rw-r--r--drivers/staging/dgrp/dgrp_common.h8
-rw-r--r--drivers/staging/dgrp/dgrp_dpa_ops.c19
-rw-r--r--drivers/staging/dgrp/dgrp_mon_ops.c16
-rw-r--r--drivers/staging/dgrp/dgrp_net_ops.c19
-rw-r--r--drivers/staging/dgrp/dgrp_ports_ops.c16
-rw-r--r--drivers/staging/dgrp/dgrp_specproc.c96
6 files changed, 45 insertions, 129 deletions
diff --git a/drivers/staging/dgrp/dgrp_common.h b/drivers/staging/dgrp/dgrp_common.h
index 99e231c3c60..81fc9ae155a 100644
--- a/drivers/staging/dgrp/dgrp_common.h
+++ b/drivers/staging/dgrp/dgrp_common.h
@@ -49,20 +49,20 @@ extern struct dgrp_poll_data dgrp_poll_data;
extern void dgrp_poll_handler(unsigned long arg);
/* from dgrp_mon_ops.c */
-extern void dgrp_register_mon_hook(struct proc_dir_entry *de);
+extern const struct file_operations dgrp_mon_ops;
/* from dgrp_tty.c */
extern int dgrp_tty_init(struct nd_struct *nd);
extern void dgrp_tty_uninit(struct nd_struct *nd);
/* from dgrp_ports_ops.c */
-extern void dgrp_register_ports_hook(struct proc_dir_entry *de);
+extern const struct file_operations dgrp_ports_ops;
/* from dgrp_net_ops.c */
-extern void dgrp_register_net_hook(struct proc_dir_entry *de);
+extern const struct file_operations dgrp_net_ops;
/* from dgrp_dpa_ops.c */
-extern void dgrp_register_dpa_hook(struct proc_dir_entry *de);
+extern const struct file_operations dgrp_dpa_ops;
extern void dgrp_dpa_data(struct nd_struct *, int, u8 *, int);
/* from dgrp_sysfs.c */
diff --git a/drivers/staging/dgrp/dgrp_dpa_ops.c b/drivers/staging/dgrp/dgrp_dpa_ops.c
index 021cca498f2..cfa8e82404f 100644
--- a/drivers/staging/dgrp/dgrp_dpa_ops.c
+++ b/drivers/staging/dgrp/dgrp_dpa_ops.c
@@ -52,7 +52,7 @@ static long dgrp_dpa_ioctl(struct file *file, unsigned int cmd,
unsigned long arg);
static unsigned int dgrp_dpa_select(struct file *, struct poll_table_struct *);
-static const struct file_operations dpa_ops = {
+const struct file_operations dgrp_dpa_ops = {
.owner = THIS_MODULE,
.read = dgrp_dpa_read,
.poll = dgrp_dpa_select,
@@ -61,12 +61,6 @@ static const struct file_operations dpa_ops = {
.release = dgrp_dpa_release,
};
-static struct inode_operations dpa_inode_ops = {
- .permission = dgrp_inode_permission
-};
-
-
-
struct digi_node {
uint nd_state; /* Node state: 1 = up, 0 = down. */
uint nd_chan_count; /* Number of channels found */
@@ -111,17 +105,6 @@ struct digi_debug {
#define DIGI_SETDEBUG (('d'<<8) | 247) /* set debug info */
-void dgrp_register_dpa_hook(struct proc_dir_entry *de)
-{
- struct nd_struct *node = de->data;
-
- de->proc_iops = &dpa_inode_ops;
- de->proc_fops = &dpa_ops;
-
- node->nd_dpa_de = de;
- spin_lock_init(&node->nd_dpa_lock);
-}
-
/*
* dgrp_dpa_open -- open the DPA device for a particular PortServer
*/
diff --git a/drivers/staging/dgrp/dgrp_mon_ops.c b/drivers/staging/dgrp/dgrp_mon_ops.c
index 4792d056a36..52493b5c167 100644
--- a/drivers/staging/dgrp/dgrp_mon_ops.c
+++ b/drivers/staging/dgrp/dgrp_mon_ops.c
@@ -49,7 +49,7 @@ static ssize_t dgrp_mon_read(struct file *, char __user *, size_t, loff_t *);
static long dgrp_mon_ioctl(struct file *file, unsigned int cmd,
unsigned long arg);
-static const struct file_operations mon_ops = {
+const struct file_operations dgrp_mon_ops = {
.owner = THIS_MODULE,
.read = dgrp_mon_read,
.unlocked_ioctl = dgrp_mon_ioctl,
@@ -57,20 +57,6 @@ static const struct file_operations mon_ops = {
.release = dgrp_mon_release,
};
-static struct inode_operations mon_inode_ops = {
- .permission = dgrp_inode_permission
-};
-
-void dgrp_register_mon_hook(struct proc_dir_entry *de)
-{
- struct nd_struct *node = de->data;
-
- de->proc_iops = &mon_inode_ops;
- de->proc_fops = &mon_ops;
- node->nd_mon_de = de;
- sema_init(&node->nd_mon_semaphore, 1);
-}
-
/**
* dgrp_mon_open() -- open /proc/dgrp/ports device for a PortServer
* @inode: struct inode *
diff --git a/drivers/staging/dgrp/dgrp_net_ops.c b/drivers/staging/dgrp/dgrp_net_ops.c
index e6018823b9d..dc826b2cf90 100644
--- a/drivers/staging/dgrp/dgrp_net_ops.c
+++ b/drivers/staging/dgrp/dgrp_net_ops.c
@@ -72,7 +72,7 @@ static long dgrp_net_ioctl(struct file *file, unsigned int cmd,
static unsigned int dgrp_net_select(struct file *file,
struct poll_table_struct *table);
-static const struct file_operations net_ops = {
+const struct file_operations dgrp_net_ops = {
.owner = THIS_MODULE,
.read = dgrp_net_read,
.write = dgrp_net_write,
@@ -82,23 +82,6 @@ static const struct file_operations net_ops = {
.release = dgrp_net_release,
};
-static struct inode_operations net_inode_ops = {
- .permission = dgrp_inode_permission
-};
-
-void dgrp_register_net_hook(struct proc_dir_entry *de)
-{
- struct nd_struct *node = de->data;
-
- de->proc_iops = &net_inode_ops;
- de->proc_fops = &net_ops;
- node->nd_net_de = de;
- sema_init(&node->nd_net_semaphore, 1);
- node->nd_state = NS_CLOSED;
- dgrp_create_node_class_sysfs_files(node);
-}
-
-
/**
* dgrp_dump() -- prints memory for debugging purposes.
* @mem: Memory location which should be printed to the console
diff --git a/drivers/staging/dgrp/dgrp_ports_ops.c b/drivers/staging/dgrp/dgrp_ports_ops.c
index cd1fc208862..48e9079c635 100644
--- a/drivers/staging/dgrp/dgrp_ports_ops.c
+++ b/drivers/staging/dgrp/dgrp_ports_ops.c
@@ -47,7 +47,7 @@
/* File operation declarations */
static int dgrp_ports_open(struct inode *, struct file *);
-static const struct file_operations ports_ops = {
+const struct file_operations dgrp_ports_ops = {
.owner = THIS_MODULE,
.open = dgrp_ports_open,
.read = seq_read,
@@ -55,20 +55,6 @@ static const struct file_operations ports_ops = {
.release = seq_release
};
-static struct inode_operations ports_inode_ops = {
- .permission = dgrp_inode_permission
-};
-
-
-void dgrp_register_ports_hook(struct proc_dir_entry *de)
-{
- struct nd_struct *node = de->data;
-
- de->proc_iops = &ports_inode_ops;
- de->proc_fops = &ports_ops;
- node->nd_ports_de = de;
-}
-
static void *dgrp_ports_seq_start(struct seq_file *seq, loff_t *pos)
{
if (*pos == 0)
diff --git a/drivers/staging/dgrp/dgrp_specproc.c b/drivers/staging/dgrp/dgrp_specproc.c
index caf4faccf42..22c5d0bfe10 100644
--- a/drivers/staging/dgrp/dgrp_specproc.c
+++ b/drivers/staging/dgrp/dgrp_specproc.c
@@ -48,10 +48,9 @@ static struct proc_dir_entry *dgrp_proc_dir_entry;
static int dgrp_add_id(long id);
static int dgrp_remove_nd(struct nd_struct *nd);
-static void unregister_dgrp_device(struct proc_dir_entry *de);
-static void register_dgrp_device(struct nd_struct *node,
+static struct proc_dir_entry *add_proc_file(struct nd_struct *node,
struct proc_dir_entry *root,
- void (*register_hook)(struct proc_dir_entry *de));
+ const struct file_operations *fops);
/* File operation declarations */
static int parse_write_config(char *);
@@ -100,6 +99,21 @@ static struct proc_dir_entry *mon_entry_pointer;
static struct proc_dir_entry *dpa_entry_pointer;
static struct proc_dir_entry *ports_entry_pointer;
+static void remove_files(struct nd_struct *nd)
+{
+ char buf[3];
+ ID_TO_CHAR(nd->nd_ID, buf);
+ dgrp_remove_node_class_sysfs_files(nd);
+ if (nd->nd_net_de)
+ remove_proc_entry(buf, net_entry_pointer);
+ if (nd->nd_mon_de)
+ remove_proc_entry(buf, mon_entry_pointer);
+ if (nd->nd_dpa_de)
+ remove_proc_entry(buf, dpa_entry_pointer);
+ if (nd->nd_ports_de)
+ remove_proc_entry(buf, ports_entry_pointer);
+}
+
void dgrp_unregister_proc(void)
{
net_entry_pointer = NULL;
@@ -109,21 +123,8 @@ void dgrp_unregister_proc(void)
if (dgrp_proc_dir_entry) {
struct nd_struct *nd;
- list_for_each_entry(nd, &nd_struct_list, list) {
- if (nd->nd_net_de) {
- unregister_dgrp_device(nd->nd_net_de);
- dgrp_remove_node_class_sysfs_files(nd);
- }
-
- if (nd->nd_mon_de)
- unregister_dgrp_device(nd->nd_mon_de);
-
- if (nd->nd_dpa_de)
- unregister_dgrp_device(nd->nd_dpa_de);
-
- if (nd->nd_ports_de)
- unregister_dgrp_device(nd->nd_ports_de);
- }
+ list_for_each_entry(nd, &nd_struct_list, list)
+ remove_files(nd);
remove_proc_entry("dgrp/config", NULL);
remove_proc_entry("dgrp/info", NULL);
remove_proc_entry("dgrp/nodeinfo", NULL);
@@ -494,6 +495,10 @@ static int dgrp_add_id(long id)
init_waitqueue_head(&nd->nd_tx_waitq);
init_waitqueue_head(&nd->nd_mon_wqueue);
init_waitqueue_head(&nd->nd_dpa_wqueue);
+ sema_init(&nd->nd_mon_semaphore, 1);
+ sema_init(&nd->nd_net_semaphore, 1);
+ spin_lock_init(&nd->nd_dpa_lock);
+ nd->nd_state = NS_CLOSED;
for (i = 0; i < SEQ_MAX; i++)
init_waitqueue_head(&nd->nd_seq_wque[i]);
@@ -508,12 +513,12 @@ static int dgrp_add_id(long id)
if (ret)
goto error_out;
- register_dgrp_device(nd, net_entry_pointer, dgrp_register_net_hook);
- register_dgrp_device(nd, mon_entry_pointer, dgrp_register_mon_hook);
- register_dgrp_device(nd, dpa_entry_pointer, dgrp_register_dpa_hook);
- register_dgrp_device(nd, ports_entry_pointer,
- dgrp_register_ports_hook);
-
+ dgrp_create_node_class_sysfs_files(nd);
+ nd->nd_net_de = add_proc_file(nd, net_entry_pointer, &dgrp_net_ops);
+ nd->nd_mon_de = add_proc_file(nd, mon_entry_pointer, &dgrp_mon_ops);
+ nd->nd_dpa_de = add_proc_file(nd, dpa_entry_pointer, &dgrp_dpa_ops);
+ nd->nd_ports_de = add_proc_file(nd, ports_entry_pointer,
+ &dgrp_ports_ops);
return 0;
/* FIXME this guy should free the tty driver stored in nd and destroy
@@ -532,16 +537,7 @@ static int dgrp_remove_nd(struct nd_struct *nd)
if (nd->nd_tty_ref_cnt)
return -EBUSY;
- if (nd->nd_net_de) {
- unregister_dgrp_device(nd->nd_net_de);
- dgrp_remove_node_class_sysfs_files(nd);
- }
-
- unregister_dgrp_device(nd->nd_mon_de);
-
- unregister_dgrp_device(nd->nd_ports_de);
-
- unregister_dgrp_device(nd->nd_dpa_de);
+ remove_files(nd);
dgrp_tty_uninit(nd);
@@ -553,9 +549,9 @@ static int dgrp_remove_nd(struct nd_struct *nd)
return 0;
}
-static void register_dgrp_device(struct nd_struct *node,
+static struct proc_dir_entry *add_proc_file(struct nd_struct *node,
struct proc_dir_entry *root,
- void (*register_hook)(struct proc_dir_entry *de))
+ const struct file_operations *fops)
{
char buf[3];
struct proc_dir_entry *de;
@@ -563,28 +559,10 @@ static void register_dgrp_device(struct nd_struct *node,
ID_TO_CHAR(node->nd_ID, buf);
de = create_proc_entry(buf, 0600 | S_IFREG, root);
- if (!de)
- return;
-
- de->data = (void *) node;
-
- if (register_hook)
- register_hook(de);
-
-}
-
-static void unregister_dgrp_device(struct proc_dir_entry *de)
-{
- if (!de)
- return;
-
- /* Don't unregister proc entries that are still being used.. */
- if ((atomic_read(&de->count)) != 1) {
- pr_alert("%s - proc entry %s in use. Not removing.\n",
- __func__, de->name);
- return;
+ if (de) {
+ de->data = (void *) node;
+ de->proc_fops = fops;
+ de->proc_iops = &proc_inode_ops;
}
-
- remove_proc_entry(de->name, de->parent);
- de = NULL;
+ return de;
}