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>

4 files changed, 17 insertions, 17 deletions

diff --git a/include/linux/compat.h b/include/linux/compat.h
index 168f7daa7bde..9ddc8780e8db 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -331,7 +331,7 @@ asmlinkage long compat_sys_epoll_pwait(int epfd,
                         const compat_sigset_t __user *sigmask,
                         compat_size_t sigsetsize);
 
-asmlinkage long compat_sys_utimensat(unsigned int dfd, char __user *filename,
+asmlinkage long compat_sys_utimensat(unsigned int dfd, const char __user *filename,
                                 struct compat_timespec __user *t, int flags);
 
 asmlinkage long compat_sys_signalfd(int ufd,
@@ -348,9 +348,9 @@ asmlinkage long compat_sys_move_pages(pid_t pid, unsigned long nr_page,
                                       const int __user *nodes,
                                       int __user *status,
                                       int flags);
-asmlinkage long compat_sys_futimesat(unsigned int dfd, char __user *filename,
+asmlinkage long compat_sys_futimesat(unsigned int dfd, const char __user *filename,
                                      struct compat_timeval __user *t);
-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);
 asmlinkage long compat_sys_openat(unsigned int dfd, const char __user *filename,
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 7a0625e26a39..5f0ca2fbb2a0 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2320,10 +2320,10 @@ void inode_set_bytes(struct inode *inode, loff_t bytes);
 
 extern int vfs_readdir(struct file *, filldir_t, void *);
 
-extern int vfs_stat(char __user *, struct kstat *);
-extern int vfs_lstat(char __user *, struct kstat *);
+extern int vfs_stat(const char __user *, struct kstat *);
+extern int vfs_lstat(const char __user *, struct kstat *);
 extern int vfs_fstat(unsigned int, struct kstat *);
-extern int vfs_fstatat(int , char __user *, struct kstat *, int);
+extern int vfs_fstatat(int , const char __user *, struct kstat *, int);
 
 extern int do_vfs_ioctl(struct file *filp, unsigned int fd, unsigned int cmd,
                     unsigned long arg);
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index 1b67bd333b5e..6e5d19788634 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -394,7 +394,7 @@ asmlinkage long sys_umount(char __user *name, int flags);
 asmlinkage long sys_oldumount(char __user *name);
 asmlinkage long sys_truncate(const char __user *path, long length);
 asmlinkage long sys_ftruncate(unsigned int fd, unsigned long length);
-asmlinkage long sys_stat(char __user *filename,
+asmlinkage long sys_stat(const char __user *filename,
                         struct __old_kernel_stat __user *statbuf);
 asmlinkage long sys_statfs(const char __user * path,
                                 struct statfs __user *buf);
@@ -403,21 +403,21 @@ asmlinkage long sys_statfs64(const char __user *path, size_t sz,
 asmlinkage long sys_fstatfs(unsigned int fd, struct statfs __user *buf);
 asmlinkage long sys_fstatfs64(unsigned int fd, size_t sz,
                                 struct statfs64 __user *buf);
-asmlinkage long sys_lstat(char __user *filename,
+asmlinkage long sys_lstat(const char __user *filename,
                         struct __old_kernel_stat __user *statbuf);
 asmlinkage long sys_fstat(unsigned int fd,
                         struct __old_kernel_stat __user *statbuf);
-asmlinkage long sys_newstat(char __user *filename,
+asmlinkage long sys_newstat(const char __user *filename,
                                 struct stat __user *statbuf);
-asmlinkage long sys_newlstat(char __user *filename,
+asmlinkage long sys_newlstat(const char __user *filename,
                                 struct stat __user *statbuf);
 asmlinkage long sys_newfstat(unsigned int fd, struct stat __user *statbuf);
 asmlinkage long sys_ustat(unsigned dev, struct ustat __user *ubuf);
 #if BITS_PER_LONG == 32
-asmlinkage long sys_stat64(char __user *filename,
+asmlinkage long sys_stat64(const char __user *filename,
                                 struct stat64 __user *statbuf);
 asmlinkage long sys_fstat64(unsigned long fd, struct stat64 __user *statbuf);
-asmlinkage long sys_lstat64(char __user *filename,
+asmlinkage long sys_lstat64(const char __user *filename,
                                 struct stat64 __user *statbuf);
 asmlinkage long sys_truncate64(const char __user *path, loff_t length);
 asmlinkage long sys_ftruncate64(unsigned int fd, loff_t length);
@@ -760,7 +760,7 @@ asmlinkage long sys_linkat(int olddfd, const char __user *oldname,
                            int newdfd, const char __user *newname, int flags);
 asmlinkage long sys_renameat(int olddfd, const char __user * oldname,
                              int newdfd, const char __user * newname);
-asmlinkage long sys_futimesat(int dfd, char __user *filename,
+asmlinkage long sys_futimesat(int dfd, const char __user *filename,
                               struct timeval __user *utimes);
 asmlinkage long sys_faccessat(int dfd, const char __user *filename, int mode);
 asmlinkage long sys_fchmodat(int dfd, const char __user * filename,
@@ -769,13 +769,13 @@ asmlinkage long sys_fchownat(int dfd, const char __user *filename, uid_t user,
                              gid_t group, int flag);
 asmlinkage long sys_openat(int dfd, const char __user *filename, int flags,
                            int mode);
-asmlinkage long sys_newfstatat(int dfd, char __user *filename,
+asmlinkage long sys_newfstatat(int dfd, const char __user *filename,
                                struct stat __user *statbuf, int flag);
-asmlinkage long sys_fstatat64(int dfd, char __user *filename,
+asmlinkage long sys_fstatat64(int dfd, const char __user *filename,
                                struct stat64 __user *statbuf, int flag);
 asmlinkage long sys_readlinkat(int dfd, const char __user *path, char __user *buf,
                                int bufsiz);
-asmlinkage long sys_utimensat(int dfd, char __user *filename,
+asmlinkage long sys_utimensat(int dfd, const char __user *filename,
                                 struct timespec __user *utimes, int flags);
 asmlinkage long sys_unshare(unsigned long unshare_flags);
 
diff --git a/include/linux/time.h b/include/linux/time.h
index 12612701b1ae..9f15ac7ab92a 100644
--- a/include/linux/time.h
+++ b/include/linux/time.h
@@ -150,7 +150,7 @@ extern void do_gettimeofday(struct timeval *tv);
 extern int do_settimeofday(struct timespec *tv);
 extern int do_sys_settimeofday(struct timespec *tv, struct timezone *tz);
 #define do_posix_clock_monotonic_gettime(ts) ktime_get_ts(ts)
-extern long do_utimes(int dfd, char __user *filename, struct timespec *times, int flags);
+extern long do_utimes(int dfd, const char __user *filename, struct timespec *times, int flags);
 struct itimerval;
 extern int do_setitimer(int which, struct itimerval *value,
                         struct itimerval *ovalue);