6 files changed, 57 insertions, 34 deletions

diff --git a/include/linux/compat.h b/include/linux/compat.h
index 09b28b7369d7..fd4e29956d1c 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -590,6 +590,9 @@ asmlinkage ssize_t compat_sys_process_vm_writev(compat_pid_t pid,
                 unsigned long liovcnt, const struct compat_iovec __user *rvec,
                 unsigned long riovcnt, unsigned long flags);
 
+asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
+                                    compat_off_t __user *offset, compat_size_t count);
+
 #else
 
 #define is_compat_task() (0)
diff --git a/include/linux/fdtable.h b/include/linux/fdtable.h
index 158a41eed314..45052aa814c8 100644
--- a/include/linux/fdtable.h
+++ b/include/linux/fdtable.h
@@ -30,31 +30,11 @@ struct fdtable {
         struct fdtable *next;
 };
 
-static inline void __set_close_on_exec(int fd, struct fdtable *fdt)
-{
-        __set_bit(fd, fdt->close_on_exec);
-}
-
-static inline void __clear_close_on_exec(int fd, struct fdtable *fdt)
-{
-        __clear_bit(fd, fdt->close_on_exec);
-}
-
 static inline bool close_on_exec(int fd, const struct fdtable *fdt)
 {
         return test_bit(fd, fdt->close_on_exec);
 }
 
-static inline void __set_open_fd(int fd, struct fdtable *fdt)
-{
-        __set_bit(fd, fdt->open_fds);
-}
-
-static inline void __clear_open_fd(int fd, struct fdtable *fdt)
-{
-        __clear_bit(fd, fdt->open_fds);
-}
-
 static inline bool fd_is_open(int fd, const struct fdtable *fdt)
 {
         return test_bit(fd, fdt->open_fds);
@@ -93,15 +73,8 @@ struct file_operations;
 struct vfsmount;
 struct dentry;
 
-extern int expand_files(struct files_struct *, int nr);
-extern void free_fdtable_rcu(struct rcu_head *rcu);
 extern void __init files_defer_init(void);
 
-static inline void free_fdtable(struct fdtable *fdt)
-{
-        call_rcu(&fdt->rcu, free_fdtable_rcu);
-}
-
 static inline struct file * fcheck_files(struct files_struct *files, unsigned int fd)
 {
         struct file * file = NULL;
@@ -122,8 +95,20 @@ struct task_struct;
 struct files_struct *get_files_struct(struct task_struct *);
 void put_files_struct(struct files_struct *fs);
 void reset_files_struct(struct files_struct *);
+void daemonize_descriptors(void);
 int unshare_files(struct files_struct **);
 struct files_struct *dup_fd(struct files_struct *, int *);
+void do_close_on_exec(struct files_struct *);
+int iterate_fd(struct files_struct *, unsigned,
+                int (*)(const void *, struct file *, unsigned),
+                const void *);
+
+extern int __alloc_fd(struct files_struct *files,
+                      unsigned start, unsigned end, unsigned flags);
+extern void __fd_install(struct files_struct *files,
+                      unsigned int fd, struct file *file);
+extern int __close_fd(struct files_struct *files,
+                      unsigned int fd);
 
 extern struct kmem_cache *files_cachep;
 
diff --git a/include/linux/file.h b/include/linux/file.h
index a22408bac0d0..cbacf4faf447 100644
--- 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);
diff --git a/include/linux/fs.h b/include/linux/fs.h
index aa110476a95b..ca6d8c806f47 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1074,7 +1074,11 @@ struct file_handle {
         unsigned char f_handle[0];
 };
 
-#define get_file(x)     atomic_long_inc(&(x)->f_count)
+static inline struct file *get_file(struct file *f)
+{
+        atomic_long_inc(&f->f_count);
+        return f;
+}
 #define fput_atomic(x)  atomic_long_add_unless(&(x)->f_count, -1, 1)
 #define file_count(x)   atomic_long_read(&(x)->f_count)
 
@@ -1126,9 +1130,9 @@ static inline int file_check_writeable(struct file *filp)
 /* Page cache limit. The filesystems should put that into their s_maxbytes 
    limits, otherwise bad things can happen in VM. */ 
 #if BITS_PER_LONG==32
-#define MAX_LFS_FILESIZE        (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1) 
+#define MAX_LFS_FILESIZE        (((loff_t)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1) 
 #elif BITS_PER_LONG==64
-#define MAX_LFS_FILESIZE        0x7fffffffffffffffUL
+#define MAX_LFS_FILESIZE        ((loff_t)0x7fffffffffffffff)
 #endif
 
 #define FL_POSIX        1
diff --git a/include/linux/net.h b/include/linux/net.h
index 99276c3dc89a..6ab31cabef7c 100644
--- a/include/linux/net.h
+++ b/include/linux/net.h
@@ -65,6 +65,7 @@ typedef enum {
 struct poll_table_struct;
 struct pipe_inode_info;
 struct inode;
+struct file;
 struct net;
 
 #define SOCK_ASYNC_NOSPACE      0
@@ -246,7 +247,7 @@ extern int   	     sock_sendmsg(struct socket *sock, struct msghdr *msg,
                                   size_t len);
 extern int           sock_recvmsg(struct socket *sock, struct msghdr *msg,
                                   size_t size, int flags);
-extern int           sock_map_fd(struct socket *sock, int flags);
+extern struct file  *sock_alloc_file(struct socket *sock, int flags, const char *dname);
 extern struct socket *sockfd_lookup(int fd, int *err);
 extern struct socket *sock_from_file(struct file *file, int *err);
 #define              sockfd_put(sock) fput(sock->file)
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 9c5612f0374b..9d51e260bde0 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -405,6 +405,7 @@ static inline void arch_pick_mmap_layout(struct mm_struct *mm) {}
 
 extern void set_dumpable(struct mm_struct *mm, int value);
 extern int get_dumpable(struct mm_struct *mm);
+extern int __get_dumpable(unsigned long mm_flags);
 
 /* get/set_dumpable() values */
 #define SUID_DUMPABLE_DISABLED  0