CRED: Wrap current->cred and a few other accessors

[deliverable/linux.git] / fs / file_table.c

diff --git a/fs/file_table.c b/fs/file_table.c
index 83084225b4c3b3195520d5a7a441360046d6f230..bc4563fe791d1281e91240e21be740ff218054dd 100644 (file)
--- a/fs/file_table.c
+++ b/fs/file_table.c
@@ -94,7 +94,7 @@ int proc_nr_files(ctl_table *table, int write, struct file *filp,
  */
 struct file *get_empty_filp(void)
 {
-       struct task_struct *tsk;
+       const struct cred *cred = current_cred();
        static int old_max;
        struct file * f;
 
@@ -118,12 +118,11 @@ struct file *get_empty_filp(void)
        if (security_file_alloc(f))
                goto fail_sec;
 
-       tsk = current;
        INIT_LIST_HEAD(&f->f_u.fu_list);
-       atomic_set(&f->f_count, 1);
+       atomic_long_set(&f->f_count, 1);
        rwlock_init(&f->f_owner.lock);
-       f->f_uid = tsk->fsuid;
-       f->f_gid = tsk->fsgid;
+       f->f_uid = cred->fsuid;
+       f->f_gid = cred->fsgid;
        eventpoll_init_file(f);
        /* f->f_version: 0 */
        return f;
@@ -161,7 +160,7 @@ EXPORT_SYMBOL(get_empty_filp);
  * code should be moved into this function.
  */
 struct file *alloc_file(struct vfsmount *mnt, struct dentry *dentry,
-               mode_t mode, const struct file_operations *fop)
+               fmode_t mode, const struct file_operations *fop)
 {
        struct file *file;
        struct path;
@@ -193,7 +192,7 @@ EXPORT_SYMBOL(alloc_file);
  * of this should be moving to alloc_file().
  */
 int init_file(struct file *file, struct vfsmount *mnt, struct dentry *dentry,
-          mode_t mode, const struct file_operations *fop)
+          fmode_t mode, const struct file_operations *fop)
 {
        int error = 0;
        file->f_path.dentry = dentry;
@@ -219,7 +218,7 @@ EXPORT_SYMBOL(init_file);
 
 void fput(struct file *file)
 {
-       if (atomic_dec_and_test(&file->f_count))
+       if (atomic_long_dec_and_test(&file->f_count))
                __fput(file);
 }
 
@@ -269,6 +268,10 @@ void __fput(struct file *file)
        eventpoll_release(file);
        locks_remove_flock(file);
 
+       if (unlikely(file->f_flags & FASYNC)) {
+               if (file->f_op && file->f_op->fasync)
+                       file->f_op->fasync(-1, file, 0);
+       }
        if (file->f_op && file->f_op->release)
                file->f_op->release(inode, file);
        security_file_free(file);
@@ -294,7 +297,7 @@ struct file *fget(unsigned int fd)
        rcu_read_lock();
        file = fcheck_files(files, fd);
        if (file) {
-               if (!atomic_inc_not_zero(&file->f_count)) {
+               if (!atomic_long_inc_not_zero(&file->f_count)) {
                        /* File object ref couldn't be taken */
                        rcu_read_unlock();
                        return NULL;
@@ -326,7 +329,7 @@ struct file *fget_light(unsigned int fd, int *fput_needed)
                rcu_read_lock();
                file = fcheck_files(files, fd);
                if (file) {
-                       if (atomic_inc_not_zero(&file->f_count))
+                       if (atomic_long_inc_not_zero(&file->f_count))
                                *fput_needed = 1;
                        else
                                /* Didn't get the reference, someone's freed */
@@ -341,7 +344,7 @@ struct file *fget_light(unsigned int fd, int *fput_needed)
 
 void put_filp(struct file *file)
 {
-       if (atomic_dec_and_test(&file->f_count)) {
+       if (atomic_long_dec_and_test(&file->f_count)) {
                security_file_free(file);
                file_kill(file);
                file_free(file);