From ac41cfd19bf77424519b962f8205ede51fceaac6 Mon Sep 17 00:00:00 2001 From: "Denis V. Lunev" Date: Tue, 29 Apr 2008 01:02:30 -0700 Subject: 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 Acked-by: Karsten Keil Cc: Alexey Dobriyan Cc: "Eric W. Biederman" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/isdn/capi/kcapi_proc.c | 24 ++++++++++-------------- 1 file changed, 10 insertions(+), 14 deletions(-) (limited to 'drivers/isdn/capi') diff --git a/drivers/isdn/capi/kcapi_proc.c b/drivers/isdn/capi/kcapi_proc.c index 845a797..c29208b 100644 --- a/drivers/isdn/capi/kcapi_proc.c +++ b/drivers/isdn/capi/kcapi_proc.c @@ -114,6 +114,7 @@ static int seq_contrstats_open(struct inode *inode, struct file *file) } static const struct file_operations proc_controller_ops = { + .owner = THIS_MODULE, .open = seq_controller_open, .read = seq_read, .llseek = seq_lseek, @@ -121,6 +122,7 @@ static const struct file_operations proc_controller_ops = { }; static const struct file_operations proc_contrstats_ops = { + .owner = THIS_MODULE, .open = seq_contrstats_open, .read = seq_read, .llseek = seq_lseek, @@ -219,6 +221,7 @@ seq_applstats_open(struct inode *inode, struct file *file) } static const struct file_operations proc_applications_ops = { + .owner = THIS_MODULE, .open = seq_applications_open, .read = seq_read, .llseek = seq_lseek, @@ -226,21 +229,13 @@ static const struct file_operations proc_applications_ops = { }; static const struct file_operations proc_applstats_ops = { + .owner = THIS_MODULE, .open = seq_applstats_open, .read = seq_read, .llseek = seq_lseek, .release = seq_release, }; -static void -create_seq_entry(char *name, mode_t mode, const struct file_operations *f) -{ - struct proc_dir_entry *entry; - entry = create_proc_entry(name, mode, NULL); - if (entry) - entry->proc_fops = f; -} - // --------------------------------------------------------------------------- static void *capi_driver_start(struct seq_file *seq, loff_t *pos) @@ -283,6 +278,7 @@ seq_capi_driver_open(struct inode *inode, struct file *file) } static const struct file_operations proc_driver_ops = { + .owner = THIS_MODULE, .open = seq_capi_driver_open, .read = seq_read, .llseek = seq_lseek, @@ -296,11 +292,11 @@ kcapi_proc_init(void) { proc_mkdir("capi", NULL); proc_mkdir("capi/controllers", NULL); - create_seq_entry("capi/controller", 0, &proc_controller_ops); - create_seq_entry("capi/contrstats", 0, &proc_contrstats_ops); - create_seq_entry("capi/applications", 0, &proc_applications_ops); - create_seq_entry("capi/applstats", 0, &proc_applstats_ops); - create_seq_entry("capi/driver", 0, &proc_driver_ops); + proc_create("capi/controller", 0, NULL, &proc_controller_ops); + proc_create("capi/contrstats", 0, NULL, &proc_contrstats_ops); + proc_create("capi/applications", 0, NULL, &proc_applications_ops); + proc_create("capi/applstats", 0, NULL, &proc_applstats_ops); + proc_create("capi/driver", 0, NULL, &proc_driver_ops); } void __exit -- cgit v1.1