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>
This commit is contained in:
parent
08f3d07ddd
commit
af064cdde6
6 changed files with 45 additions and 129 deletions
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@ -49,20 +49,20 @@ extern struct dgrp_poll_data dgrp_poll_data;
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extern void dgrp_poll_handler(unsigned long arg);
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/* from dgrp_mon_ops.c */
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extern void dgrp_register_mon_hook(struct proc_dir_entry *de);
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extern const struct file_operations dgrp_mon_ops;
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/* from dgrp_tty.c */
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extern int dgrp_tty_init(struct nd_struct *nd);
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extern void dgrp_tty_uninit(struct nd_struct *nd);
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/* from dgrp_ports_ops.c */
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extern void dgrp_register_ports_hook(struct proc_dir_entry *de);
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extern const struct file_operations dgrp_ports_ops;
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/* from dgrp_net_ops.c */
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extern void dgrp_register_net_hook(struct proc_dir_entry *de);
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extern const struct file_operations dgrp_net_ops;
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/* from dgrp_dpa_ops.c */
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extern void dgrp_register_dpa_hook(struct proc_dir_entry *de);
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extern const struct file_operations dgrp_dpa_ops;
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extern void dgrp_dpa_data(struct nd_struct *, int, u8 *, int);
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/* from dgrp_sysfs.c */
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@ -52,7 +52,7 @@ static long dgrp_dpa_ioctl(struct file *file, unsigned int cmd,
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unsigned long arg);
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static unsigned int dgrp_dpa_select(struct file *, struct poll_table_struct *);
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static const struct file_operations dpa_ops = {
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const struct file_operations dgrp_dpa_ops = {
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.owner = THIS_MODULE,
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.read = dgrp_dpa_read,
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.poll = dgrp_dpa_select,
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@ -61,12 +61,6 @@ static const struct file_operations dpa_ops = {
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.release = dgrp_dpa_release,
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};
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static struct inode_operations dpa_inode_ops = {
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.permission = dgrp_inode_permission
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};
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struct digi_node {
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uint nd_state; /* Node state: 1 = up, 0 = down. */
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uint nd_chan_count; /* Number of channels found */
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@ -111,17 +105,6 @@ struct digi_debug {
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#define DIGI_SETDEBUG (('d'<<8) | 247) /* set debug info */
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void dgrp_register_dpa_hook(struct proc_dir_entry *de)
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{
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struct nd_struct *node = de->data;
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de->proc_iops = &dpa_inode_ops;
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de->proc_fops = &dpa_ops;
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node->nd_dpa_de = de;
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spin_lock_init(&node->nd_dpa_lock);
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}
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/*
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* dgrp_dpa_open -- open the DPA device for a particular PortServer
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*/
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@ -49,7 +49,7 @@ static ssize_t dgrp_mon_read(struct file *, char __user *, size_t, loff_t *);
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static long dgrp_mon_ioctl(struct file *file, unsigned int cmd,
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unsigned long arg);
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static const struct file_operations mon_ops = {
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const struct file_operations dgrp_mon_ops = {
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.owner = THIS_MODULE,
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.read = dgrp_mon_read,
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.unlocked_ioctl = dgrp_mon_ioctl,
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@ -57,20 +57,6 @@ static const struct file_operations mon_ops = {
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.release = dgrp_mon_release,
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};
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static struct inode_operations mon_inode_ops = {
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.permission = dgrp_inode_permission
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};
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void dgrp_register_mon_hook(struct proc_dir_entry *de)
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{
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struct nd_struct *node = de->data;
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de->proc_iops = &mon_inode_ops;
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de->proc_fops = &mon_ops;
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node->nd_mon_de = de;
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sema_init(&node->nd_mon_semaphore, 1);
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}
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/**
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* dgrp_mon_open() -- open /proc/dgrp/ports device for a PortServer
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* @inode: struct inode *
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@ -72,7 +72,7 @@ static long dgrp_net_ioctl(struct file *file, unsigned int cmd,
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static unsigned int dgrp_net_select(struct file *file,
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struct poll_table_struct *table);
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static const struct file_operations net_ops = {
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const struct file_operations dgrp_net_ops = {
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.owner = THIS_MODULE,
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.read = dgrp_net_read,
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.write = dgrp_net_write,
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@ -82,23 +82,6 @@ static const struct file_operations net_ops = {
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.release = dgrp_net_release,
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};
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static struct inode_operations net_inode_ops = {
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.permission = dgrp_inode_permission
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};
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void dgrp_register_net_hook(struct proc_dir_entry *de)
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{
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struct nd_struct *node = de->data;
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de->proc_iops = &net_inode_ops;
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de->proc_fops = &net_ops;
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node->nd_net_de = de;
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sema_init(&node->nd_net_semaphore, 1);
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node->nd_state = NS_CLOSED;
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dgrp_create_node_class_sysfs_files(node);
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}
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/**
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* dgrp_dump() -- prints memory for debugging purposes.
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* @mem: Memory location which should be printed to the console
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@ -47,7 +47,7 @@
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/* File operation declarations */
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static int dgrp_ports_open(struct inode *, struct file *);
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static const struct file_operations ports_ops = {
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const struct file_operations dgrp_ports_ops = {
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.owner = THIS_MODULE,
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.open = dgrp_ports_open,
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.read = seq_read,
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@ -55,20 +55,6 @@ static const struct file_operations ports_ops = {
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.release = seq_release
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};
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static struct inode_operations ports_inode_ops = {
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.permission = dgrp_inode_permission
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};
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void dgrp_register_ports_hook(struct proc_dir_entry *de)
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{
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struct nd_struct *node = de->data;
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de->proc_iops = &ports_inode_ops;
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de->proc_fops = &ports_ops;
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node->nd_ports_de = de;
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}
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static void *dgrp_ports_seq_start(struct seq_file *seq, loff_t *pos)
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{
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if (*pos == 0)
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@ -48,10 +48,9 @@ static struct proc_dir_entry *dgrp_proc_dir_entry;
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static int dgrp_add_id(long id);
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static int dgrp_remove_nd(struct nd_struct *nd);
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static void unregister_dgrp_device(struct proc_dir_entry *de);
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static void register_dgrp_device(struct nd_struct *node,
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static struct proc_dir_entry *add_proc_file(struct nd_struct *node,
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struct proc_dir_entry *root,
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void (*register_hook)(struct proc_dir_entry *de));
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const struct file_operations *fops);
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/* File operation declarations */
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static int parse_write_config(char *);
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@ -100,6 +99,21 @@ static struct proc_dir_entry *mon_entry_pointer;
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static struct proc_dir_entry *dpa_entry_pointer;
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static struct proc_dir_entry *ports_entry_pointer;
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static void remove_files(struct nd_struct *nd)
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{
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char buf[3];
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ID_TO_CHAR(nd->nd_ID, buf);
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dgrp_remove_node_class_sysfs_files(nd);
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if (nd->nd_net_de)
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remove_proc_entry(buf, net_entry_pointer);
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if (nd->nd_mon_de)
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remove_proc_entry(buf, mon_entry_pointer);
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if (nd->nd_dpa_de)
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remove_proc_entry(buf, dpa_entry_pointer);
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if (nd->nd_ports_de)
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remove_proc_entry(buf, ports_entry_pointer);
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}
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void dgrp_unregister_proc(void)
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{
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net_entry_pointer = NULL;
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@ -109,21 +123,8 @@ void dgrp_unregister_proc(void)
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if (dgrp_proc_dir_entry) {
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struct nd_struct *nd;
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list_for_each_entry(nd, &nd_struct_list, list) {
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if (nd->nd_net_de) {
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unregister_dgrp_device(nd->nd_net_de);
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dgrp_remove_node_class_sysfs_files(nd);
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}
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if (nd->nd_mon_de)
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unregister_dgrp_device(nd->nd_mon_de);
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if (nd->nd_dpa_de)
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unregister_dgrp_device(nd->nd_dpa_de);
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if (nd->nd_ports_de)
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unregister_dgrp_device(nd->nd_ports_de);
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}
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list_for_each_entry(nd, &nd_struct_list, list)
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remove_files(nd);
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remove_proc_entry("dgrp/config", NULL);
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remove_proc_entry("dgrp/info", NULL);
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remove_proc_entry("dgrp/nodeinfo", NULL);
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@ -494,6 +495,10 @@ static int dgrp_add_id(long id)
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init_waitqueue_head(&nd->nd_tx_waitq);
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init_waitqueue_head(&nd->nd_mon_wqueue);
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init_waitqueue_head(&nd->nd_dpa_wqueue);
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sema_init(&nd->nd_mon_semaphore, 1);
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sema_init(&nd->nd_net_semaphore, 1);
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spin_lock_init(&nd->nd_dpa_lock);
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nd->nd_state = NS_CLOSED;
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for (i = 0; i < SEQ_MAX; i++)
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init_waitqueue_head(&nd->nd_seq_wque[i]);
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@ -508,12 +513,12 @@ static int dgrp_add_id(long id)
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if (ret)
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goto error_out;
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register_dgrp_device(nd, net_entry_pointer, dgrp_register_net_hook);
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register_dgrp_device(nd, mon_entry_pointer, dgrp_register_mon_hook);
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register_dgrp_device(nd, dpa_entry_pointer, dgrp_register_dpa_hook);
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register_dgrp_device(nd, ports_entry_pointer,
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dgrp_register_ports_hook);
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dgrp_create_node_class_sysfs_files(nd);
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nd->nd_net_de = add_proc_file(nd, net_entry_pointer, &dgrp_net_ops);
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nd->nd_mon_de = add_proc_file(nd, mon_entry_pointer, &dgrp_mon_ops);
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nd->nd_dpa_de = add_proc_file(nd, dpa_entry_pointer, &dgrp_dpa_ops);
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nd->nd_ports_de = add_proc_file(nd, ports_entry_pointer,
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&dgrp_ports_ops);
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return 0;
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/* FIXME this guy should free the tty driver stored in nd and destroy
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@ -532,16 +537,7 @@ static int dgrp_remove_nd(struct nd_struct *nd)
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if (nd->nd_tty_ref_cnt)
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return -EBUSY;
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if (nd->nd_net_de) {
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unregister_dgrp_device(nd->nd_net_de);
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dgrp_remove_node_class_sysfs_files(nd);
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}
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unregister_dgrp_device(nd->nd_mon_de);
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unregister_dgrp_device(nd->nd_ports_de);
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unregister_dgrp_device(nd->nd_dpa_de);
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remove_files(nd);
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dgrp_tty_uninit(nd);
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@ -553,9 +549,9 @@ static int dgrp_remove_nd(struct nd_struct *nd)
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return 0;
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}
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static void register_dgrp_device(struct nd_struct *node,
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static struct proc_dir_entry *add_proc_file(struct nd_struct *node,
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struct proc_dir_entry *root,
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void (*register_hook)(struct proc_dir_entry *de))
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const struct file_operations *fops)
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{
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char buf[3];
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struct proc_dir_entry *de;
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@ -563,28 +559,10 @@ static void register_dgrp_device(struct nd_struct *node,
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ID_TO_CHAR(node->nd_ID, buf);
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de = create_proc_entry(buf, 0600 | S_IFREG, root);
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if (!de)
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return;
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de->data = (void *) node;
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if (register_hook)
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register_hook(de);
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}
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static void unregister_dgrp_device(struct proc_dir_entry *de)
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{
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if (!de)
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return;
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/* Don't unregister proc entries that are still being used.. */
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if ((atomic_read(&de->count)) != 1) {
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pr_alert("%s - proc entry %s in use. Not removing.\n",
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__func__, de->name);
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return;
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if (de) {
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de->data = (void *) node;
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de->proc_fops = fops;
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de->proc_iops = &proc_inode_ops;
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}
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remove_proc_entry(de->name, de->parent);
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de = NULL;
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return de;
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}
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