Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[firefly-linux-kernel-4.4.55.git] / include / linux / file.h

diff --git a/include/linux/file.h b/include/linux/file.h
index a22408bac0d005bca76c99e30a5d88b83e294561..cbacf4faf447a9dd2b3fd50d3dc2e4f86a120e67 100644 (file)
--- a/include/linux/file.h
+++ b/include/linux/file.h
@@ -26,15 +26,44 @@ static inline void fput_light(struct file *file, int fput_needed)
                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};
+}
+
 extern struct file *fget_raw(unsigned int fd);
 extern struct file *fget_raw_light(unsigned int fd, int *fput_needed);
+
+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 int f_dupfd(unsigned int from, struct file *file, unsigned flags);
+extern int replace_fd(unsigned fd, struct file *file, unsigned flags);
 extern void set_close_on_exec(unsigned int fd, int flag);
+extern bool get_close_on_exec(unsigned int fd);
 extern void put_filp(struct file *);
-extern int alloc_fd(unsigned start, unsigned flags);
-extern int get_unused_fd(void);
-#define get_unused_fd_flags(flags) alloc_fd(0, (flags))
+extern int get_unused_fd_flags(unsigned flags);
+#define get_unused_fd() get_unused_fd_flags(0)
 extern void put_unused_fd(unsigned int fd);
 
 extern void fd_install(unsigned int fd, struct file *file);