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>
diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c
index 73b624e..1e6449c 100644
--- a/arch/s390/kernel/compat_linux.c
+++ b/arch/s390/kernel/compat_linux.c
@@ -436,7 +436,7 @@
* sys32_execve() executes a new program after the asm stub has set
* things up for us. This should basically do what I want it to.
*/
-asmlinkage long sys32_execve(char __user *name, compat_uptr_t __user *argv,
+asmlinkage long sys32_execve(const char __user *name, compat_uptr_t __user *argv,
compat_uptr_t __user *envp)
{
struct pt_regs *regs = task_pt_regs(current);
@@ -570,7 +570,7 @@
return copy_to_user(ubuf,&tmp,sizeof(tmp)) ? -EFAULT : 0;
}
-asmlinkage long sys32_stat64(char __user * filename, struct stat64_emu31 __user * statbuf)
+asmlinkage long sys32_stat64(const char __user * filename, struct stat64_emu31 __user * statbuf)
{
struct kstat stat;
int ret = vfs_stat(filename, &stat);
@@ -579,7 +579,7 @@
return ret;
}
-asmlinkage long sys32_lstat64(char __user * filename, struct stat64_emu31 __user * statbuf)
+asmlinkage long sys32_lstat64(const char __user * filename, struct stat64_emu31 __user * statbuf)
{
struct kstat stat;
int ret = vfs_lstat(filename, &stat);
@@ -597,7 +597,7 @@
return ret;
}
-asmlinkage long sys32_fstatat64(unsigned int dfd, char __user *filename,
+asmlinkage long sys32_fstatat64(unsigned int dfd, const char __user *filename,
struct stat64_emu31 __user* statbuf, int flag)
{
struct kstat stat;
@@ -655,7 +655,7 @@
return sys_read(fd, buf, count);
}
-asmlinkage long sys32_write(unsigned int fd, char __user * buf, size_t count)
+asmlinkage long sys32_write(unsigned int fd, const char __user * buf, size_t count)
{
if ((compat_ssize_t) count < 0)
return -EINVAL;