Convert all system calls to return a long

commit 2ed7c03ec17779afb4fcfa3b8c61df61bd4879ba upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/fs/read_write.c b/fs/read_write.c
index 969a6d9c020ba01644578b04c86043b15e98b53a..323ae376263e098a1abc2571d4d8bf02bcc0f161 100644 (file)
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -134,7 +134,7 @@ 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;
@@ -356,7 +356,7 @@ 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;
@@ -373,7 +373,7 @@ 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;
@@ -390,7 +390,7 @@ 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;
@@ -411,7 +411,7 @@ 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;
@@ -659,7 +659,7 @@ 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;
@@ -680,7 +680,7 @@ 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;
@@ -799,7 +799,7 @@ 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;
@@ -818,7 +818,7 @@ 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 468377e665314434fd4f5aa6fe407f50a68096fc..45eec51f79872546ce198c304c226a1ba7d14500 100644 (file)
--- 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 a7593f670ca69b08cc1139367c63d366df80c442..22290eeaf553d3c48f70634444560a654c3ff3cb 100644 (file)
--- 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 68eb857cfdea2a1961760320a7e956608b8b432c..e83974f1a93855d53a3f3e20e1fbd322d0cdf991 100644 (file)
--- a/ipc/mqueue.c
+++ b/ipc/mqueue.c
@@ -904,7 +904,7 @@ 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 2d8be7ebb0f73499f894a1828fd827f0217290f1..5e0bd13bce6b20ae1cdda2199ba455eb3a9afcb7 100644 (file)
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -1184,9 +1184,11 @@ 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 4530fc65445518272ae851fa44e90378cfd908e1..7751d9d1217cccf5c38c9bfc78fe7cf6073daaba 100644 (file)
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -2538,7 +2538,7 @@ 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 dbd50fabe4c74ab241523fbf2b427c596e2838c5..2f7c90bf258aba812e06246050c5295957246c25 100644 (file)
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -1144,7 +1144,7 @@ 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 f8c69273c37f6656b7b3504e5f87881be395e12c..c13c718c4bb6991d4168eaf43554af7fc3e9e9ee 100644 (file)
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1366,7 +1366,7 @@ 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 d4855a682ab622863f85352a5353bd45fa1440e4..683a69ec0d29283fe6c9a573a85d3541ff34a8d5 100644 (file)
--- 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 58a2908f42f500002e49adc218adbca0e8602c26..37c854d8f3161237893acbf9e1f57158d63fc93c 100644 (file)
--- 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 7695dc850785e853f066e63992c242ffee14c30c..925780022404283f19a72cfd4fe47844f5d81a41 100644 (file)
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -377,7 +377,7 @@ 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;