commit c7887325230aec47d47a32562a6e26014a0fafca
author David Howells <dhowells@redhat.com> Wed Aug 11 11:26:22 2010 +0100
committer Linus Torvalds <torvalds@linux-foundation.org> Fri Aug 13 16:53:13 2010 -0700
tree 10535943dace59ddb01d3440aa582bc4640e8016
parent b84ae4a1401a731ef5fee987c0cb08743838dda7

Mark arguments to certain syscalls as being const

Mark arguments to certain system calls as being const where they should be but
aren't.  The list includes:

 (*) The filename arguments of various stat syscalls, execve(), various utimes
     syscalls and some mount syscalls.

 (*) The filename arguments of some syscall helpers relating to the above.

 (*) The buffer argument of various write syscalls.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/compat.c

diff --git a/fs/compat.c b/fs/compat.c
index e6d5d70..718c706 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -77,7 +77,8 @@
  * Not all architectures have sys_utime, so implement this in terms
  * of sys_utimes.
  */
-asmlinkage long compat_sys_utime(char __user *filename, struct compat_utimbuf __user *t)
+asmlinkage long compat_sys_utime(const char __user *filename,
+				 struct compat_utimbuf __user *t)
 {
 	struct timespec tv[2];
 
@@ -91,7 +92,7 @@
 	return do_utimes(AT_FDCWD, filename, t ? tv : NULL, 0);
 }
 
-asmlinkage long compat_sys_utimensat(unsigned int dfd, char __user *filename, struct compat_timespec __user *t, int flags)
+asmlinkage long compat_sys_utimensat(unsigned int dfd, const char __user *filename, struct compat_timespec __user *t, int flags)
 {
 	struct timespec tv[2];
 
@@ -106,7 +107,7 @@
 	return do_utimes(dfd, filename, t ? tv : NULL, flags);
 }
 
-asmlinkage long compat_sys_futimesat(unsigned int dfd, char __user *filename, struct compat_timeval __user *t)
+asmlinkage long compat_sys_futimesat(unsigned int dfd, const char __user *filename, struct compat_timeval __user *t)
 {
 	struct timespec tv[2];
 
@@ -125,7 +126,7 @@
 	return do_utimes(dfd, filename, t ? tv : NULL, 0);
 }
 
-asmlinkage long compat_sys_utimes(char __user *filename, struct compat_timeval __user *t)
+asmlinkage long compat_sys_utimes(const char __user *filename, struct compat_timeval __user *t)
 {
 	return compat_sys_futimesat(AT_FDCWD, filename, t);
 }
@@ -169,7 +170,7 @@
 	return err;
 }
 
-asmlinkage long compat_sys_newstat(char __user * filename,
+asmlinkage long compat_sys_newstat(const char __user * filename,
 		struct compat_stat __user *statbuf)
 {
 	struct kstat stat;
@@ -181,7 +182,7 @@
 	return cp_compat_stat(&stat, statbuf);
 }
 
-asmlinkage long compat_sys_newlstat(char __user * filename,
+asmlinkage long compat_sys_newlstat(const char __user * filename,
 		struct compat_stat __user *statbuf)
 {
 	struct kstat stat;
@@ -194,7 +195,8 @@
 }
 
 #ifndef __ARCH_WANT_STAT64
-asmlinkage long compat_sys_newfstatat(unsigned int dfd, char __user *filename,
+asmlinkage long compat_sys_newfstatat(unsigned int dfd,
+		const char __user *filename,
 		struct compat_stat __user *statbuf, int flag)
 {
 	struct kstat stat;
@@ -837,9 +839,10 @@
 #define NCPFS_NAME      "ncpfs"
 #define NFS4_NAME	"nfs4"
 
-asmlinkage long compat_sys_mount(char __user * dev_name, char __user * dir_name,
-				 char __user * type, unsigned long flags,
-				 void __user * data)
+asmlinkage long compat_sys_mount(const char __user * dev_name,
+				 const char __user * dir_name,
+				 const char __user * type, unsigned long flags,
+				 const void __user * data)
 {
 	char *kernel_type;
 	unsigned long data_page;