switch compat readv/writev variants to COMPAT_SYSCALL_DEFINE

... and take to fs/read_write.c

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 0 insertions, 186 deletions

diff --git a/fs/compat.c b/fs/compat.c
index daa3b771d64d..5058345dc279 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -1069,192 +1069,6 @@ asmlinkage long compat_sys_getdents64(unsigned int fd,
 }
 #endif /* ! __ARCH_OMIT_COMPAT_SYS_GETDENTS64 */
 
-static ssize_t compat_do_readv_writev(int type, struct file *file,
-                               const struct compat_iovec __user *uvector,
-                               unsigned long nr_segs, loff_t *pos)
-{
-        compat_ssize_t tot_len;
-        struct iovec iovstack[UIO_FASTIOV];
-        struct iovec *iov = iovstack;
-        ssize_t ret;
-        io_fn_t fn;
-        iov_fn_t fnv;
-
-        ret = -EINVAL;
-        if (!file->f_op)
-                goto out;
-
-        ret = compat_rw_copy_check_uvector(type, uvector, nr_segs,
-                                               UIO_FASTIOV, iovstack, &iov);
-        if (ret <= 0)
-                goto out;
-
-        tot_len = ret;
-        ret = rw_verify_area(type, file, pos, tot_len);
-        if (ret < 0)
-                goto out;
-
-        fnv = NULL;
-        if (type == READ) {
-                fn = file->f_op->read;
-                fnv = file->f_op->aio_read;
-        } else {
-                fn = (io_fn_t)file->f_op->write;
-                fnv = file->f_op->aio_write;
-        }
-
-        if (fnv) {
-                file_start_write(file);
-                ret = do_sync_readv_writev(file, iov, nr_segs, tot_len,
-                                                pos, fnv);
-                file_end_write(file);
-        } else
-                ret = do_loop_readv_writev(file, iov, nr_segs, pos, fn);
-
-out:
-        if (iov != iovstack)
-                kfree(iov);
-        if ((ret + (type == READ)) > 0) {
-                if (type == READ)
-                        fsnotify_access(file);
-                else
-                        fsnotify_modify(file);
-        }
-        return ret;
-}
-
-static size_t compat_readv(struct file *file,
-                           const struct compat_iovec __user *vec,
-                           unsigned long vlen, loff_t *pos)
-{
-        ssize_t ret = -EBADF;
-
-        if (!(file->f_mode & FMODE_READ))
-                goto out;
-
-        ret = -EINVAL;
-        if (!file->f_op || (!file->f_op->aio_read && !file->f_op->read))
-                goto out;
-
-        ret = compat_do_readv_writev(READ, file, vec, vlen, pos);
-
-out:
-        if (ret > 0)
-                add_rchar(current, ret);
-        inc_syscr(current);
-        return ret;
-}
-
-asmlinkage ssize_t
-compat_sys_readv(unsigned long fd, const struct compat_iovec __user *vec,
-                 unsigned long vlen)
-{
-        struct fd f = fdget(fd);
-        ssize_t ret;
-        loff_t pos;
-
-        if (!f.file)
-                return -EBADF;
-        pos = f.file->f_pos;
-        ret = compat_readv(f.file, vec, vlen, &pos);
-        f.file->f_pos = pos;
-        fdput(f);
-        return ret;
-}
-
-asmlinkage ssize_t
-compat_sys_preadv64(unsigned long fd, const struct compat_iovec __user *vec,
-                    unsigned long vlen, loff_t pos)
-{
-        struct fd f;
-        ssize_t ret;
-
-        if (pos < 0)
-                return -EINVAL;
-        f = fdget(fd);
-        if (!f.file)
-                return -EBADF;
-        ret = -ESPIPE;
-        if (f.file->f_mode & FMODE_PREAD)
-                ret = compat_readv(f.file, vec, vlen, &pos);
-        fdput(f);
-        return ret;
-}
-
-asmlinkage ssize_t
-compat_sys_preadv(unsigned long fd, const struct compat_iovec __user *vec,
-                  unsigned long vlen, u32 pos_low, u32 pos_high)
-{
-        loff_t pos = ((loff_t)pos_high << 32) | pos_low;
-        return compat_sys_preadv64(fd, vec, vlen, pos);
-}
-
-static size_t compat_writev(struct file *file,
-                            const struct compat_iovec __user *vec,
-                            unsigned long vlen, loff_t *pos)
-{
-        ssize_t ret = -EBADF;
-
-        if (!(file->f_mode & FMODE_WRITE))
-                goto out;
-
-        ret = -EINVAL;
-        if (!file->f_op || (!file->f_op->aio_write && !file->f_op->write))
-                goto out;
-
-        ret = compat_do_readv_writev(WRITE, file, vec, vlen, pos);
-
-out:
-        if (ret > 0)
-                add_wchar(current, ret);
-        inc_syscw(current);
-        return ret;
-}
-
-asmlinkage ssize_t
-compat_sys_writev(unsigned long fd, const struct compat_iovec __user *vec,
-                  unsigned long vlen)
-{
-        struct fd f = fdget(fd);
-        ssize_t ret;
-        loff_t pos;
-
-        if (!f.file)
-                return -EBADF;
-        pos = f.file->f_pos;
-        ret = compat_writev(f.file, vec, vlen, &pos);
-        f.file->f_pos = pos;
-        fdput(f);
-        return ret;
-}
-
-asmlinkage ssize_t
-compat_sys_pwritev64(unsigned long fd, const struct compat_iovec __user *vec,
-                     unsigned long vlen, loff_t pos)
-{
-        struct fd f;
-        ssize_t ret;
-
-        if (pos < 0)
-                return -EINVAL;
-        f = fdget(fd);
-        if (!f.file)
-                return -EBADF;
-        ret = -ESPIPE;
-        if (f.file->f_mode & FMODE_PWRITE)
-                ret = compat_writev(f.file, vec, vlen, &pos);
-        fdput(f);
-        return ret;
-}
-
-asmlinkage ssize_t
-compat_sys_pwritev(unsigned long fd, const struct compat_iovec __user *vec,
-                   unsigned long vlen, u32 pos_low, u32 pos_high)
-{
-        loff_t pos = ((loff_t)pos_high << 32) | pos_low;
-        return compat_sys_pwritev64(fd, vec, vlen, pos);
-}
-
 asmlinkage long
 compat_sys_vmsplice(int fd, const struct compat_iovec __user *iov32,
                     unsigned int nr_segs, unsigned int flags)