new helpers: fdget()/fdput()
Signed-off-bs: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/include/linux/file.h b/include/linux/file.h
index 6eee54a..c38bfbf 100644
--- a/include/linux/file.h
+++ b/include/linux/file.h
@@ -26,8 +26,34 @@
fput(file);
}
+struct fd {
+ struct file *file;
+ int need_put;
+};
+
+static inline void fdput(struct fd fd)
+{
+ if (fd.need_put)
+ fput(fd.file);
+}
+
extern struct file *fget(unsigned int fd);
extern struct file *fget_light(unsigned int fd, int *fput_needed);
+
+static inline struct fd fdget(unsigned int fd)
+{
+ int b;
+ struct file *f = fget_light(fd, &b);
+ return (struct fd){f,b};
+}
+
+static inline struct fd fdget_raw(unsigned int fd)
+{
+ int b;
+ struct file *f = fget_raw_light(fd, &b);
+ return (struct fd){f,b};
+}
+
extern struct file *fget_raw(unsigned int fd);
extern struct file *fget_raw_light(unsigned int fd, int *fput_needed);
extern int f_dupfd(unsigned int from, struct file *file, unsigned flags);