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path: root/drivers/isdn/hysdn/hysdn_proclog.c
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Diffstat (limited to 'drivers/isdn/hysdn/hysdn_proclog.c')
-rw-r--r--drivers/isdn/hysdn/hysdn_proclog.c110
1 files changed, 29 insertions, 81 deletions
diff --git a/drivers/isdn/hysdn/hysdn_proclog.c b/drivers/isdn/hysdn/hysdn_proclog.c
index 236cc7dadfd..7b5fd8fb176 100644
--- a/drivers/isdn/hysdn/hysdn_proclog.c
+++ b/drivers/isdn/hysdn/hysdn_proclog.c
@@ -24,7 +24,7 @@
extern struct proc_dir_entry *hysdn_proc_entry;
static DEFINE_MUTEX(hysdn_log_mutex);
-static void put_log_buffer(hysdn_card * card, char *cp);
+static void put_log_buffer(hysdn_card *card, char *cp);
/*************************************************/
/* structure keeping ascii log for device output */
@@ -54,7 +54,7 @@ struct procdata {
/* log function for cards error log interface */
/**********************************************/
void
-hysdn_card_errlog(hysdn_card * card, tErrLogEntry * logp, int maxsize)
+hysdn_card_errlog(hysdn_card *card, tErrLogEntry *logp, int maxsize)
{
char buf[ERRLOG_TEXT_SIZE + 40];
@@ -66,7 +66,7 @@ hysdn_card_errlog(hysdn_card * card, tErrLogEntry * logp, int maxsize)
/* Log function using format specifiers for output */
/***************************************************/
void
-hysdn_addlog(hysdn_card * card, char *fmt,...)
+hysdn_addlog(hysdn_card *card, char *fmt, ...)
{
struct procdata *pd = card->proclog;
char *cp;
@@ -98,7 +98,7 @@ hysdn_addlog(hysdn_card * card, char *fmt,...)
/* Flushes buffers not longer in use. */
/********************************************/
static void
-put_log_buffer(hysdn_card * card, char *cp)
+put_log_buffer(hysdn_card *card, char *cp)
{
struct log_data *ib;
struct procdata *pd = card->proclog;
@@ -115,7 +115,7 @@ put_log_buffer(hysdn_card * card, char *cp)
return; /* no open file for read */
if (!(ib = kmalloc(sizeof(struct log_data) + strlen(cp), GFP_ATOMIC)))
- return; /* no memory */
+ return; /* no memory */
strcpy(ib->log_start, cp); /* set output string */
ib->next = NULL;
ib->proc_ctrl = pd; /* point to own control structure */
@@ -153,20 +153,12 @@ put_log_buffer(hysdn_card * card, char *cp)
/* write log file -> set log level bits */
/****************************************/
static ssize_t
-hysdn_log_write(struct file *file, const char __user *buf, size_t count, loff_t * off)
+hysdn_log_write(struct file *file, const char __user *buf, size_t count, loff_t *off)
{
int rc;
- unsigned char valbuf[128];
hysdn_card *card = file->private_data;
- if (count > (sizeof(valbuf) - 1))
- count = sizeof(valbuf) - 1; /* limit length */
- if (copy_from_user(valbuf, buf, count))
- return (-EFAULT); /* copy failed */
-
- valbuf[count] = 0; /* terminating 0 */
-
- rc = kstrtoul(valbuf, 0, &card->debug_flags);
+ rc = kstrtoul_from_user(buf, count, 0, &card->debug_flags);
if (rc < 0)
return rc;
hysdn_addlog(card, "debug set to 0x%lx", card->debug_flags);
@@ -177,33 +169,21 @@ hysdn_log_write(struct file *file, const char __user *buf, size_t count, loff_t
/* read log file */
/******************/
static ssize_t
-hysdn_log_read(struct file *file, char __user *buf, size_t count, loff_t * off)
+hysdn_log_read(struct file *file, char __user *buf, size_t count, loff_t *off)
{
struct log_data *inf;
int len;
- struct proc_dir_entry *pde = PDE(file->f_path.dentry->d_inode);
- struct procdata *pd = NULL;
- hysdn_card *card;
+ hysdn_card *card = PDE_DATA(file_inode(file));
- if (!*((struct log_data **) file->private_data)) {
+ if (!(inf = *((struct log_data **) file->private_data))) {
+ struct procdata *pd = card->proclog;
if (file->f_flags & O_NONBLOCK)
return (-EAGAIN);
- /* sorry, but we need to search the card */
- card = card_root;
- while (card) {
- pd = card->proclog;
- if (pd->log == pde)
- break;
- card = card->next; /* search next entry */
- }
- if (card)
- interruptible_sleep_on(&(pd->rd_queue));
- else
- return (-EAGAIN);
-
+ wait_event_interruptible(pd->rd_queue, (inf =
+ *((struct log_data **) file->private_data)));
}
- if (!(inf = *((struct log_data **) file->private_data)))
+ if (!inf)
return (0);
inf->usage_cnt--; /* new usage count */
@@ -223,27 +203,15 @@ hysdn_log_read(struct file *file, char __user *buf, size_t count, loff_t * off)
static int
hysdn_log_open(struct inode *ino, struct file *filep)
{
- hysdn_card *card;
- struct procdata *pd = NULL;
- unsigned long flags;
+ hysdn_card *card = PDE_DATA(ino);
mutex_lock(&hysdn_log_mutex);
- card = card_root;
- while (card) {
- pd = card->proclog;
- if (pd->log == PDE(ino))
- break;
- card = card->next; /* search next entry */
- }
- if (!card) {
- mutex_unlock(&hysdn_log_mutex);
- return (-ENODEV); /* device is unknown/invalid */
- }
- filep->private_data = card; /* remember our own card */
-
if ((filep->f_mode & (FMODE_READ | FMODE_WRITE)) == FMODE_WRITE) {
/* write only access -> write log level only */
+ filep->private_data = card; /* remember our own card */
} else if ((filep->f_mode & (FMODE_READ | FMODE_WRITE)) == FMODE_READ) {
+ struct procdata *pd = card->proclog;
+ unsigned long flags;
/* read access -> log/debug read */
spin_lock_irqsave(&card->hysdn_lock, flags);
@@ -283,21 +251,13 @@ hysdn_log_close(struct inode *ino, struct file *filep)
} else {
/* read access -> log/debug read, mark one further file as closed */
- pd = NULL;
inf = *((struct log_data **) filep->private_data); /* get first log entry */
if (inf)
pd = (struct procdata *) inf->proc_ctrl; /* still entries there */
else {
/* no info available -> search card */
- card = card_root;
- while (card) {
- pd = card->proclog;
- if (pd->log == PDE(ino))
- break;
- card = card->next; /* search next entry */
- }
- if (card)
- pd = card->proclog; /* pointer to procfs log */
+ card = PDE_DATA(file_inode(filep));
+ pd = card->proclog; /* pointer to procfs log */
}
if (pd)
pd->if_used--; /* decrement interface usage count by one */
@@ -324,27 +284,15 @@ hysdn_log_close(struct inode *ino, struct file *filep)
/* select/poll routine to be able using select() */
/*************************************************/
static unsigned int
-hysdn_log_poll(struct file *file, poll_table * wait)
+hysdn_log_poll(struct file *file, poll_table *wait)
{
unsigned int mask = 0;
- struct proc_dir_entry *pde = PDE(file->f_path.dentry->d_inode);
- hysdn_card *card;
- struct procdata *pd = NULL;
+ hysdn_card *card = PDE_DATA(file_inode(file));
+ struct procdata *pd = card->proclog;
if ((file->f_mode & (FMODE_READ | FMODE_WRITE)) == FMODE_WRITE)
return (mask); /* no polling for write supported */
- /* we need to search the card */
- card = card_root;
- while (card) {
- pd = card->proclog;
- if (pd->log == pde)
- break;
- card = card->next; /* search next entry */
- }
- if (!card)
- return (mask); /* card not found */
-
poll_wait(file, &(pd->rd_queue), wait);
if (*((struct log_data **) file->private_data))
@@ -364,7 +312,7 @@ static const struct file_operations log_fops =
.write = hysdn_log_write,
.poll = hysdn_log_poll,
.open = hysdn_log_open,
- .release = hysdn_log_close,
+ .release = hysdn_log_close,
};
@@ -373,7 +321,7 @@ static const struct file_operations log_fops =
/* conf files. */
/***********************************************************************************/
int
-hysdn_proclog_init(hysdn_card * card)
+hysdn_proclog_init(hysdn_card *card)
{
struct procdata *pd;
@@ -381,9 +329,9 @@ hysdn_proclog_init(hysdn_card * card)
if ((pd = kzalloc(sizeof(struct procdata), GFP_KERNEL)) != NULL) {
sprintf(pd->log_name, "%s%d", PROC_LOG_BASENAME, card->myid);
- pd->log = proc_create(pd->log_name,
- S_IFREG | S_IRUGO | S_IWUSR, hysdn_proc_entry,
- &log_fops);
+ pd->log = proc_create_data(pd->log_name,
+ S_IFREG | S_IRUGO | S_IWUSR, hysdn_proc_entry,
+ &log_fops, card);
init_waitqueue_head(&(pd->rd_queue));
@@ -398,7 +346,7 @@ hysdn_proclog_init(hysdn_card * card)
/* The module counter is assumed to be 0 ! */
/************************************************************************************/
void
-hysdn_proclog_release(hysdn_card * card)
+hysdn_proclog_release(hysdn_card *card)
{
struct procdata *pd;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 14:25:33 +0000