diff options
| author | Denis V. Lunev <den@openvz.org> | 2008-04-29 01:02:30 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-29 08:06:22 -0700 |
| commit | ac41cfd19bf77424519b962f8205ede51fceaac6 (patch) | |
| tree | f0299767b2115dd076e01841ca5cbe3113ef7a02 /drivers/isdn/hysdn | |
| parent | a95609cb0283a23e519e607ff9fc2a4aa77e2532 (diff) | |
| download | lwn-ac41cfd19bf77424519b962f8205ede51fceaac6.tar.gz lwn-ac41cfd19bf77424519b962f8205ede51fceaac6.zip | |
isdn: use non-racy method for proc entries creation
Use proc_create()/proc_create_data() to make sure that ->proc_fops and ->data
be setup before gluing PDE to main tree.
Add correct ->owner to proc_fops to fix reading/module unloading race.
Signed-off-by: Denis V. Lunev <den@openvz.org>
Acked-by: Karsten Keil <kkeil@suse.de>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/isdn/hysdn')
| -rw-r--r-- | drivers/isdn/hysdn/hysdn_procconf.c | 9 | ||||
| -rw-r--r-- | drivers/isdn/hysdn/hysdn_proclog.c | 8 |
2 files changed, 8 insertions, 9 deletions
diff --git a/drivers/isdn/hysdn/hysdn_procconf.c b/drivers/isdn/hysdn/hysdn_procconf.c index 27d890b48f88..877be9922c3d 100644 --- a/drivers/isdn/hysdn/hysdn_procconf.c +++ b/drivers/isdn/hysdn/hysdn_procconf.c @@ -370,6 +370,7 @@ hysdn_conf_close(struct inode *ino, struct file *filep) /******************************************************/ static const struct file_operations conf_fops = { + .owner = THIS_MODULE, .llseek = no_llseek, .read = hysdn_conf_read, .write = hysdn_conf_write, @@ -402,11 +403,9 @@ hysdn_procconf_init(void) while (card) { sprintf(conf_name, "%s%d", PROC_CONF_BASENAME, card->myid); - if ((card->procconf = (void *) create_proc_entry(conf_name, - S_IFREG | S_IRUGO | S_IWUSR, - hysdn_proc_entry)) != NULL) { - ((struct proc_dir_entry *) card->procconf)->proc_fops = &conf_fops; - ((struct proc_dir_entry *) card->procconf)->owner = THIS_MODULE; + if ((card->procconf = (void *) proc_create(conf_name, + S_IFREG | S_IRUGO | S_IWUSR, + hysdn_proc_entry)) != NULL) { hysdn_proclog_init(card); /* init the log file entry */ } card = card->next; /* next entry */ diff --git a/drivers/isdn/hysdn/hysdn_proclog.c b/drivers/isdn/hysdn/hysdn_proclog.c index 27b3991fb0ec..8991d2c8ee4a 100644 --- a/drivers/isdn/hysdn/hysdn_proclog.c +++ b/drivers/isdn/hysdn/hysdn_proclog.c @@ -380,6 +380,7 @@ hysdn_log_poll(struct file *file, poll_table * wait) /**************************************************/ static const struct file_operations log_fops = { + .owner = THIS_MODULE, .llseek = no_llseek, .read = hysdn_log_read, .write = hysdn_log_write, @@ -402,10 +403,9 @@ 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); - if ((pd->log = create_proc_entry(pd->log_name, S_IFREG | S_IRUGO | S_IWUSR, hysdn_proc_entry)) != NULL) { - pd->log->proc_fops = &log_fops; - pd->log->owner = THIS_MODULE; - } + pd->log = proc_create(pd->log_name, + S_IFREG | S_IRUGO | S_IWUSR, hysdn_proc_entry, + &log_fops); init_waitqueue_head(&(pd->rd_queue)); |