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Mark arguments to certain syscalls as being const

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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>
This commit is contained in:
David Howells
2010-08-11 11:26:22 +01:00
committed by Linus Torvalds
parent b84ae4a140
commit c788732523
44 changed files with 125 additions and 109 deletions
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23
fs/compat.c
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@@ -77,7 +77,8 @@ int compat_printk(const char *fmt, ...)
* 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 @@ asmlinkage long compat_sys_utime(char __user *filename, struct compat_utimbuf __
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 @@ asmlinkage long compat_sys_utimensat(unsigned int dfd, char __user *filename, st
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 @@ asmlinkage long compat_sys_futimesat(unsigned int dfd, char __user *filename, st
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 @@ static int cp_compat_stat(struct kstat *stat, struct compat_stat __user *ubuf)
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 @@ asmlinkage long compat_sys_newstat(char __user * filename,
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 @@ asmlinkage long compat_sys_newlstat(char __user * filename,
}
#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 @@ static int do_nfs4_super_data_conv(void *raw_data)
#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;