From 2ed7c03ec17779afb4fcfa3b8c61df61bd4879ba Mon Sep 17 00:00:00 2001
From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Wed, 14 Jan 2009 14:13:54 +0100
Subject: [CVE-2009-0029] Convert all system calls to return a long

Convert all system calls to return a long. This should be a NOP since all
converted types should have the same size anyway.
With the exception of sys_exit_group which returned void. But that doesn't
matter since the system call doesn't return.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
---
 fs/read_write.c | 18 +++++++++---------
 fs/xattr.c      | 12 ++++++------
 2 files changed, 15 insertions(+), 15 deletions(-)

(limited to 'fs')

diff --git a/fs/read_write.c b/fs/read_write.c
index 5cc6924eb15..940367f51f2 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -147,7 +147,7 @@ loff_t vfs_llseek(struct file *file, loff_t offset, int origin)
 }
 EXPORT_SYMBOL(vfs_llseek);
 
-asmlinkage off_t sys_lseek(unsigned int fd, off_t offset, unsigned int origin)
+asmlinkage long sys_lseek(unsigned int fd, off_t offset, unsigned int origin)
 {
 	off_t retval;
 	struct file * file;
@@ -369,7 +369,7 @@ static inline void file_pos_write(struct file *file, loff_t pos)
 	file->f_pos = pos;
 }
 
-asmlinkage ssize_t sys_read(unsigned int fd, char __user * buf, size_t count)
+asmlinkage long sys_read(unsigned int fd, char __user * buf, size_t count)
 {
 	struct file *file;
 	ssize_t ret = -EBADF;
@@ -386,7 +386,7 @@ asmlinkage ssize_t sys_read(unsigned int fd, char __user * buf, size_t count)
 	return ret;
 }
 
-asmlinkage ssize_t sys_write(unsigned int fd, const char __user * buf, size_t count)
+asmlinkage long sys_write(unsigned int fd, const char __user * buf, size_t count)
 {
 	struct file *file;
 	ssize_t ret = -EBADF;
@@ -403,7 +403,7 @@ asmlinkage ssize_t sys_write(unsigned int fd, const char __user * buf, size_t co
 	return ret;
 }
 
-asmlinkage ssize_t sys_pread64(unsigned int fd, char __user *buf,
+asmlinkage long sys_pread64(unsigned int fd, char __user *buf,
 			     size_t count, loff_t pos)
 {
 	struct file *file;
@@ -424,7 +424,7 @@ asmlinkage ssize_t sys_pread64(unsigned int fd, char __user *buf,
 	return ret;
 }
 
-asmlinkage ssize_t sys_pwrite64(unsigned int fd, const char __user *buf,
+asmlinkage long sys_pwrite64(unsigned int fd, const char __user *buf,
 			      size_t count, loff_t pos)
 {
 	struct file *file;
@@ -672,7 +672,7 @@ ssize_t vfs_writev(struct file *file, const struct iovec __user *vec,
 
 EXPORT_SYMBOL(vfs_writev);
 
-asmlinkage ssize_t
+asmlinkage long
 sys_readv(unsigned long fd, const struct iovec __user *vec, unsigned long vlen)
 {
 	struct file *file;
@@ -693,7 +693,7 @@ sys_readv(unsigned long fd, const struct iovec __user *vec, unsigned long vlen)
 	return ret;
 }
 
-asmlinkage ssize_t
+asmlinkage long
 sys_writev(unsigned long fd, const struct iovec __user *vec, unsigned long vlen)
 {
 	struct file *file;
@@ -812,7 +812,7 @@ out:
 	return retval;
 }
 
-asmlinkage ssize_t sys_sendfile(int out_fd, int in_fd, off_t __user *offset, size_t count)
+asmlinkage long sys_sendfile(int out_fd, int in_fd, off_t __user *offset, size_t count)
 {
 	loff_t pos;
 	off_t off;
@@ -831,7 +831,7 @@ asmlinkage ssize_t sys_sendfile(int out_fd, int in_fd, off_t __user *offset, siz
 	return do_sendfile(out_fd, in_fd, NULL, count, 0);
 }
 
-asmlinkage ssize_t sys_sendfile64(int out_fd, int in_fd, loff_t __user *offset, size_t count)
+asmlinkage long sys_sendfile64(int out_fd, int in_fd, loff_t __user *offset, size_t count)
 {
 	loff_t pos;
 	ssize_t ret;
diff --git a/fs/xattr.c b/fs/xattr.c
index 237804cd6b5..d049ae27aae 100644
--- a/fs/xattr.c
+++ b/fs/xattr.c
@@ -349,7 +349,7 @@ getxattr(struct dentry *d, const char __user *name, void __user *value,
 	return error;
 }
 
-asmlinkage ssize_t
+asmlinkage long
 sys_getxattr(const char __user *pathname, const char __user *name,
 	     void __user *value, size_t size)
 {
@@ -364,7 +364,7 @@ sys_getxattr(const char __user *pathname, const char __user *name,
 	return error;
 }
 
-asmlinkage ssize_t
+asmlinkage long
 sys_lgetxattr(const char __user *pathname, const char __user *name, void __user *value,
 	      size_t size)
 {
@@ -379,7 +379,7 @@ sys_lgetxattr(const char __user *pathname, const char __user *name, void __user
 	return error;
 }
 
-asmlinkage ssize_t
+asmlinkage long
 sys_fgetxattr(int fd, const char __user *name, void __user *value, size_t size)
 {
 	struct file *f;
@@ -424,7 +424,7 @@ listxattr(struct dentry *d, char __user *list, size_t size)
 	return error;
 }
 
-asmlinkage ssize_t
+asmlinkage long
 sys_listxattr(const char __user *pathname, char __user *list, size_t size)
 {
 	struct path path;
@@ -438,7 +438,7 @@ sys_listxattr(const char __user *pathname, char __user *list, size_t size)
 	return error;
 }
 
-asmlinkage ssize_t
+asmlinkage long
 sys_llistxattr(const char __user *pathname, char __user *list, size_t size)
 {
 	struct path path;
@@ -452,7 +452,7 @@ sys_llistxattr(const char __user *pathname, char __user *list, size_t size)
 	return error;
 }
 
-asmlinkage ssize_t
+asmlinkage long
 sys_flistxattr(int fd, char __user *list, size_t size)
 {
 	struct file *f;
-- 
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