aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorHeiko Carstens <heiko.carstens@de.ibm.com>2009-01-14 14:13:54 +0100
committerHeiko Carstens <heiko.carstens@de.ibm.com>2009-01-14 14:15:14 +0100
commit2ed7c03ec17779afb4fcfa3b8c61df61bd4879ba (patch)
tree4e0fefd574bab5470a02edf439727f472a9663c6
parent4c696ba7982501d43dea11dbbaabd2aa8a19cc42 (diff)
downloadvexpress-lsk-2ed7c03ec17779afb4fcfa3b8c61df61bd4879ba.tar.gz
[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>
-rw-r--r--fs/read_write.c18
-rw-r--r--fs/xattr.c12
-rw-r--r--include/linux/syscalls.h79
-rw-r--r--ipc/mqueue.c2
-rw-r--r--kernel/exit.c4
-rw-r--r--kernel/signal.c2
-rw-r--r--kernel/timer.c2
-rw-r--r--mm/filemap.c2
-rw-r--r--mm/mmap.c2
-rw-r--r--mm/mremap.c2
-rw-r--r--mm/nommu.c2
11 files changed, 64 insertions, 63 deletions
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;
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index a7593f670ca..22290eeaf55 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -77,7 +77,7 @@ asmlinkage long sys_times(struct tms __user *tbuf);
asmlinkage long sys_gettid(void);
asmlinkage long sys_nanosleep(struct timespec __user *rqtp, struct timespec __user *rmtp);
-asmlinkage unsigned long sys_alarm(unsigned int seconds);
+asmlinkage long sys_alarm(unsigned int seconds);
asmlinkage long sys_getpid(void);
asmlinkage long sys_getppid(void);
asmlinkage long sys_getuid(void);
@@ -166,7 +166,7 @@ asmlinkage long sys_kexec_load(unsigned long entry, unsigned long nr_segments,
unsigned long flags);
asmlinkage long sys_exit(int error_code);
-asmlinkage void sys_exit_group(int error_code);
+asmlinkage long sys_exit_group(int error_code);
asmlinkage long sys_wait4(pid_t pid, int __user *stat_addr,
int options, struct rusage __user *ru);
asmlinkage long sys_waitid(int which, pid_t pid,
@@ -196,7 +196,7 @@ asmlinkage long sys_tkill(int pid, int sig);
asmlinkage long sys_rt_sigqueueinfo(int pid, int sig, siginfo_t __user *uinfo);
asmlinkage long sys_sgetmask(void);
asmlinkage long sys_ssetmask(int newmask);
-asmlinkage unsigned long sys_signal(int sig, __sighandler_t handler);
+asmlinkage long sys_signal(int sig, __sighandler_t handler);
asmlinkage long sys_pause(void);
asmlinkage long sys_sync(void);
@@ -246,29 +246,29 @@ asmlinkage long sys_lsetxattr(const char __user *path, const char __user *name,
const void __user *value, size_t size, int flags);
asmlinkage long sys_fsetxattr(int fd, const char __user *name,
const void __user *value, size_t size, int flags);
-asmlinkage ssize_t sys_getxattr(const char __user *path, const char __user *name,
- void __user *value, size_t size);
-asmlinkage ssize_t sys_lgetxattr(const char __user *path, const char __user *name,
- void __user *value, size_t size);
-asmlinkage ssize_t sys_fgetxattr(int fd, const char __user *name,
- void __user *value, size_t size);
-asmlinkage ssize_t sys_listxattr(const char __user *path, char __user *list,
- size_t size);
-asmlinkage ssize_t sys_llistxattr(const char __user *path, char __user *list,
- size_t size);
-asmlinkage ssize_t sys_flistxattr(int fd, char __user *list, size_t size);
+asmlinkage long sys_getxattr(const char __user *path, const char __user *name,
+ void __user *value, size_t size);
+asmlinkage long sys_lgetxattr(const char __user *path, const char __user *name,
+ void __user *value, size_t size);
+asmlinkage long sys_fgetxattr(int fd, const char __user *name,
+ void __user *value, size_t size);
+asmlinkage long sys_listxattr(const char __user *path, char __user *list,
+ size_t size);
+asmlinkage long sys_llistxattr(const char __user *path, char __user *list,
+ size_t size);
+asmlinkage long sys_flistxattr(int fd, char __user *list, size_t size);
asmlinkage long sys_removexattr(const char __user *path,
const char __user *name);
asmlinkage long sys_lremovexattr(const char __user *path,
const char __user *name);
asmlinkage long sys_fremovexattr(int fd, const char __user *name);
-asmlinkage unsigned long sys_brk(unsigned long brk);
+asmlinkage long sys_brk(unsigned long brk);
asmlinkage long sys_mprotect(unsigned long start, size_t len,
unsigned long prot);
-asmlinkage unsigned long sys_mremap(unsigned long addr,
- unsigned long old_len, unsigned long new_len,
- unsigned long flags, unsigned long new_addr);
+asmlinkage long sys_mremap(unsigned long addr,
+ unsigned long old_len, unsigned long new_len,
+ unsigned long flags, unsigned long new_addr);
asmlinkage long sys_remap_file_pages(unsigned long start, unsigned long size,
unsigned long prot, unsigned long pgoff,
unsigned long flags);
@@ -321,10 +321,10 @@ asmlinkage long sys_io_submit(aio_context_t, long,
struct iocb __user * __user *);
asmlinkage long sys_io_cancel(aio_context_t ctx_id, struct iocb __user *iocb,
struct io_event __user *result);
-asmlinkage ssize_t sys_sendfile(int out_fd, int in_fd,
- off_t __user *offset, size_t count);
-asmlinkage ssize_t sys_sendfile64(int out_fd, int in_fd,
- loff_t __user *offset, size_t count);
+asmlinkage long sys_sendfile(int out_fd, int in_fd,
+ off_t __user *offset, size_t count);
+asmlinkage long sys_sendfile64(int out_fd, int in_fd,
+ loff_t __user *offset, size_t count);
asmlinkage long sys_readlink(const char __user *path,
char __user *buf, int bufsiz);
asmlinkage long sys_creat(const char __user *pathname, int mode);
@@ -368,26 +368,25 @@ asmlinkage long sys_utime(char __user *filename,
struct utimbuf __user *times);
asmlinkage long sys_utimes(char __user *filename,
struct timeval __user *utimes);
-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);
asmlinkage long sys_llseek(unsigned int fd, unsigned long offset_high,
unsigned long offset_low, loff_t __user *result,
unsigned int origin);
-asmlinkage ssize_t sys_read(unsigned int fd, char __user *buf,
- size_t count);
-asmlinkage ssize_t sys_readahead(int fd, loff_t offset, size_t count);
-asmlinkage ssize_t sys_readv(unsigned long fd,
- const struct iovec __user *vec,
- unsigned long vlen);
-asmlinkage ssize_t sys_write(unsigned int fd, const char __user *buf,
- size_t count);
-asmlinkage ssize_t sys_writev(unsigned long fd,
- const struct iovec __user *vec,
- unsigned long vlen);
-asmlinkage ssize_t sys_pread64(unsigned int fd, char __user *buf,
- size_t count, loff_t pos);
-asmlinkage ssize_t sys_pwrite64(unsigned int fd, const char __user *buf,
- size_t count, loff_t pos);
+asmlinkage long sys_read(unsigned int fd, char __user *buf, size_t count);
+asmlinkage long sys_readahead(int fd, loff_t offset, size_t count);
+asmlinkage long sys_readv(unsigned long fd,
+ const struct iovec __user *vec,
+ unsigned long vlen);
+asmlinkage long sys_write(unsigned int fd, const char __user *buf,
+ size_t count);
+asmlinkage long sys_writev(unsigned long fd,
+ const struct iovec __user *vec,
+ unsigned long vlen);
+asmlinkage long sys_pread64(unsigned int fd, char __user *buf,
+ size_t count, loff_t pos);
+asmlinkage long sys_pwrite64(unsigned int fd, const char __user *buf,
+ size_t count, loff_t pos);
asmlinkage long sys_getcwd(char __user *buf, unsigned long size);
asmlinkage long sys_mkdir(const char __user *pathname, int mode);
asmlinkage long sys_chdir(const char __user *filename);
@@ -476,7 +475,7 @@ asmlinkage long sys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf);
asmlinkage long sys_mq_open(const char __user *name, int oflag, mode_t mode, struct mq_attr __user *attr);
asmlinkage long sys_mq_unlink(const char __user *name);
asmlinkage long sys_mq_timedsend(mqd_t mqdes, const char __user *msg_ptr, size_t msg_len, unsigned int msg_prio, const struct timespec __user *abs_timeout);
-asmlinkage ssize_t sys_mq_timedreceive(mqd_t mqdes, char __user *msg_ptr, size_t msg_len, unsigned int __user *msg_prio, const struct timespec __user *abs_timeout);
+asmlinkage long sys_mq_timedreceive(mqd_t mqdes, char __user *msg_ptr, size_t msg_len, unsigned int __user *msg_prio, const struct timespec __user *abs_timeout);
asmlinkage long sys_mq_notify(mqd_t mqdes, const struct sigevent __user *notification);
asmlinkage long sys_mq_getsetattr(mqd_t mqdes, const struct mq_attr __user *mqstat, struct mq_attr __user *omqstat);
diff --git a/ipc/mqueue.c b/ipc/mqueue.c
index 23fdb8492b8..6df028b7054 100644
--- a/ipc/mqueue.c
+++ b/ipc/mqueue.c
@@ -907,7 +907,7 @@ out:
return ret;
}
-asmlinkage ssize_t sys_mq_timedreceive(mqd_t mqdes, char __user *u_msg_ptr,
+asmlinkage long sys_mq_timedreceive(mqd_t mqdes, char __user *u_msg_ptr,
size_t msg_len, unsigned int __user *u_msg_prio,
const struct timespec __user *u_abs_timeout)
{
diff --git a/kernel/exit.c b/kernel/exit.c
index c7740fa3252..fac9b040af2 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -1182,9 +1182,11 @@ do_group_exit(int exit_code)
* wait4()-ing process will get the correct exit code - even if this
* thread is not the thread group leader.
*/
-asmlinkage void sys_exit_group(int error_code)
+asmlinkage long sys_exit_group(int error_code)
{
do_group_exit((error_code & 0xff) << 8);
+ /* NOTREACHED */
+ return 0;
}
static struct pid *task_pid_type(struct task_struct *task, enum pid_type type)
diff --git a/kernel/signal.c b/kernel/signal.c
index 3152ac3b62e..856a5479d49 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -2559,7 +2559,7 @@ sys_ssetmask(int newmask)
/*
* For backwards compatibility. Functionality superseded by sigaction.
*/
-asmlinkage unsigned long
+asmlinkage long
sys_signal(int sig, __sighandler_t handler)
{
struct k_sigaction new_sa, old_sa;
diff --git a/kernel/timer.c b/kernel/timer.c
index dee3f641a7a..7b8697d7f04 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -1129,7 +1129,7 @@ void do_timer(unsigned long ticks)
* For backwards compatibility? This can be done in libc so Alpha
* and all newer ports shouldn't need it.
*/
-asmlinkage unsigned long sys_alarm(unsigned int seconds)
+asmlinkage long sys_alarm(unsigned int seconds)
{
return alarm_setitimer(seconds);
}
diff --git a/mm/filemap.c b/mm/filemap.c
index ceba0bd0366..538b75ed623 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1374,7 +1374,7 @@ do_readahead(struct address_space *mapping, struct file *filp,
return 0;
}
-asmlinkage ssize_t sys_readahead(int fd, loff_t offset, size_t count)
+asmlinkage long sys_readahead(int fd, loff_t offset, size_t count)
{
ssize_t ret;
struct file *file;
diff --git a/mm/mmap.c b/mm/mmap.c
index 749623196cb..a970d890cb2 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -245,7 +245,7 @@ static struct vm_area_struct *remove_vma(struct vm_area_struct *vma)
return next;
}
-asmlinkage unsigned long sys_brk(unsigned long brk)
+asmlinkage long sys_brk(unsigned long brk)
{
unsigned long rlim, retval;
unsigned long newbrk, oldbrk;
diff --git a/mm/mremap.c b/mm/mremap.c
index 646de959aa5..5572e0825d8 100644
--- a/mm/mremap.c
+++ b/mm/mremap.c
@@ -420,7 +420,7 @@ out_nc:
return ret;
}
-asmlinkage unsigned long sys_mremap(unsigned long addr,
+asmlinkage long sys_mremap(unsigned long addr,
unsigned long old_len, unsigned long new_len,
unsigned long flags, unsigned long new_addr)
{
diff --git a/mm/nommu.c b/mm/nommu.c
index 60ed8375c98..ee3e7892773 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -416,7 +416,7 @@ EXPORT_SYMBOL(vm_insert_page);
* to a regular file. in this case, the unmapping will need
* to invoke file system routines that need the global lock.
*/
-asmlinkage unsigned long sys_brk(unsigned long brk)
+asmlinkage long sys_brk(unsigned long brk)
{
struct mm_struct *mm = current->mm;