nilfs2: remove compat ioctl code

This removes compat code from the nilfs ioctls and applies the same
function for both .ioctl and .compat_ioctl file operations.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

4 files changed, 2 insertions, 231 deletions

diff --git a/fs/nilfs2/dir.c b/fs/nilfs2/dir.c
index 1b7e6ddabbeb..393316cd3cad 100644
--- a/fs/nilfs2/dir.c
+++ b/fs/nilfs2/dir.c
@@ -704,7 +704,7 @@ struct file_operations nilfs_dir_operations = {
         .readdir        = nilfs_readdir,
         .ioctl          = nilfs_ioctl,
 #ifdef CONFIG_COMPAT
-        .compat_ioctl   = nilfs_compat_ioctl,
+        .compat_ioctl   = nilfs_ioctl,
 #endif  /* CONFIG_COMPAT */
         .fsync          = nilfs_sync_file,
 
diff --git a/fs/nilfs2/file.c b/fs/nilfs2/file.c
index cd38124372f3..a2bd962ebd85 100644
--- a/fs/nilfs2/file.c
+++ b/fs/nilfs2/file.c
@@ -142,7 +142,7 @@ struct file_operations nilfs_file_operations = {
         .aio_write      = generic_file_aio_write,
         .ioctl          = nilfs_ioctl,
 #ifdef CONFIG_COMPAT
-        .compat_ioctl   = nilfs_compat_ioctl,
+        .compat_ioctl   = nilfs_ioctl,
 #endif  /* CONFIG_COMPAT */
         .mmap           = nilfs_file_mmap,
         .open           = generic_file_open,
diff --git a/fs/nilfs2/ioctl.c b/fs/nilfs2/ioctl.c
index 7fbd9fe1d035..33aff8842ce9 100644
--- a/fs/nilfs2/ioctl.c
+++ b/fs/nilfs2/ioctl.c
@@ -631,231 +631,3 @@ int nilfs_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
                 return -ENOTTY;
         }
 }
-
-/* compat_ioctl */
-#ifdef CONFIG_COMPAT
-#include <linux/compat.h>
-
-static int nilfs_compat_locked_ioctl(struct inode *inode, struct file *filp,
-                                     unsigned int cmd, unsigned long arg)
-{
-        int ret;
-
-        lock_kernel();
-        ret = nilfs_ioctl(inode, filp, cmd, arg);
-        unlock_kernel();
-        return ret;
-}
-
-static int
-nilfs_compat_ioctl_uargv32_to_uargv(struct nilfs_argv32 __user *uargv32,
-                                    struct nilfs_argv __user *uargv)
-{
-        compat_uptr_t base;
-        compat_size_t nmembs, size;
-        compat_int_t index, flags;
-
-        if (get_user(base, &uargv32->v_base) ||
-            put_user(compat_ptr(base), &uargv->v_base) ||
-            get_user(nmembs, &uargv32->v_nmembs) ||
-            put_user(nmembs, &uargv->v_nmembs) ||
-            get_user(size, &uargv32->v_size) ||
-            put_user(size, &uargv->v_size) ||
-            get_user(index, &uargv32->v_index) ||
-            put_user(index, &uargv->v_index) ||
-            get_user(flags, &uargv32->v_flags) ||
-            put_user(flags, &uargv->v_flags))
-                return -EFAULT;
-        return 0;
-}
-
-static int
-nilfs_compat_ioctl_uargv_to_uargv32(struct nilfs_argv __user *uargv,
-                                    struct nilfs_argv32 __user *uargv32)
-{
-        size_t nmembs;
-
-        if (get_user(nmembs, &uargv->v_nmembs) ||
-            put_user(nmembs, &uargv32->v_nmembs))
-                return -EFAULT;
-        return 0;
-}
-
-static int
-nilfs_compat_ioctl_get_by_argv(struct inode *inode, struct file *filp,
-                               unsigned int cmd, unsigned long arg)
-{
-        struct nilfs_argv __user *uargv;
-        struct nilfs_argv32 __user *uargv32;
-        int ret;
-
-        uargv = compat_alloc_user_space(sizeof(struct nilfs_argv));
-        uargv32 = compat_ptr(arg);
-        ret = nilfs_compat_ioctl_uargv32_to_uargv(uargv32, uargv);
-        if (ret < 0)
-                return ret;
-
-        ret = nilfs_compat_locked_ioctl(inode, filp, cmd, (unsigned long)uargv);
-        if (ret < 0)
-                return ret;
-
-        return nilfs_compat_ioctl_uargv_to_uargv32(uargv, uargv32);
-}
-
-static int
-nilfs_compat_ioctl_change_cpmode(struct inode *inode, struct file *filp,
-                                 unsigned int cmd, unsigned long arg)
-{
-        struct nilfs_cpmode __user *ucpmode;
-        struct nilfs_cpmode32 __user *ucpmode32;
-        int mode;
-
-        ucpmode = compat_alloc_user_space(sizeof(struct nilfs_cpmode));
-        ucpmode32 = compat_ptr(arg);
-        if (copy_in_user(&ucpmode->cm_cno, &ucpmode32->cm_cno,
-                         sizeof(__u64)) ||
-            get_user(mode, &ucpmode32->cm_mode) ||
-            put_user(mode, &ucpmode->cm_mode))
-                return -EFAULT;
-
-        return nilfs_compat_locked_ioctl(
-                inode, filp, cmd, (unsigned long)ucpmode);
-}
-
-
-static inline int
-nilfs_compat_ioctl_delete_checkpoint(struct inode *inode, struct file *filp,
-                                     unsigned int cmd, unsigned long arg)
-{
-        return nilfs_compat_locked_ioctl(inode, filp, cmd, arg);
-}
-
-static inline int
-nilfs_compat_ioctl_get_cpinfo(struct inode *inode, struct file *filp,
-                              unsigned int cmd, unsigned long arg)
-{
-        return nilfs_compat_ioctl_get_by_argv(inode, filp, cmd, arg);
-}
-
-static inline int
-nilfs_compat_ioctl_get_cpstat(struct inode *inode, struct file *filp,
-                              unsigned int cmd, unsigned long arg)
-{
-        return nilfs_compat_locked_ioctl(inode, filp, cmd, arg);
-}
-
-static inline int
-nilfs_compat_ioctl_get_suinfo(struct inode *inode, struct file *filp,
-                              unsigned int cmd, unsigned long arg)
-{
-        return nilfs_compat_ioctl_get_by_argv(inode, filp, cmd, arg);
-}
-
-static int
-nilfs_compat_ioctl_get_sustat(struct inode *inode, struct file *filp,
-                              unsigned int cmd, unsigned long arg)
-{
-        struct nilfs_sustat __user *usustat;
-        struct nilfs_sustat32 __user *usustat32;
-        time_t ctime, nongc_ctime;
-        int ret;
-
-        usustat = compat_alloc_user_space(sizeof(struct nilfs_sustat));
-        ret = nilfs_compat_locked_ioctl(inode, filp, cmd,
-                                        (unsigned long)usustat);
-        if (ret < 0)
-                return ret;
-
-        usustat32 = compat_ptr(arg);
-        if (copy_in_user(&usustat32->ss_nsegs, &usustat->ss_nsegs,
-                         sizeof(__u64)) ||
-            copy_in_user(&usustat32->ss_ncleansegs, &usustat->ss_ncleansegs,
-                         sizeof(__u64)) ||
-            copy_in_user(&usustat32->ss_ndirtysegs, &usustat->ss_ndirtysegs,
-                         sizeof(__u64)) ||
-            get_user(ctime, &usustat->ss_ctime) ||
-            put_user(ctime, &usustat32->ss_ctime) ||
-            get_user(nongc_ctime, &usustat->ss_nongc_ctime) ||
-            put_user(nongc_ctime, &usustat32->ss_nongc_ctime))
-                return -EFAULT;
-        return 0;
-}
-
-static inline int
-nilfs_compat_ioctl_get_vinfo(struct inode *inode, struct file *filp,
-                              unsigned int cmd, unsigned long arg)
-{
-        return nilfs_compat_ioctl_get_by_argv(inode, filp, cmd, arg);
-}
-
-static inline int
-nilfs_compat_ioctl_get_bdescs(struct inode *inode, struct file *filp,
-                             unsigned int cmd, unsigned long arg)
-{
-        return nilfs_compat_ioctl_get_by_argv(inode, filp, cmd, arg);
-}
-
-static int
-nilfs_compat_ioctl_clean_segments(struct inode *inode, struct file *filp,
-                                  unsigned int cmd, unsigned long arg)
-{
-        struct nilfs_argv __user *uargv;
-        struct nilfs_argv32 __user *uargv32;
-        int i, ret;
-
-        uargv = compat_alloc_user_space(sizeof(struct nilfs_argv) * 5);
-        uargv32 = compat_ptr(arg);
-        for (i = 0; i < 5; i++) {
-                ret = nilfs_compat_ioctl_uargv32_to_uargv(&uargv32[i],
-                                                          &uargv[i]);
-                if (ret < 0)
-                        return ret;
-        }
-        return nilfs_compat_locked_ioctl(
-                inode, filp, cmd, (unsigned long)uargv);
-}
-
-static int nilfs_compat_ioctl_sync(struct inode *inode, struct file *filp,
-                                   unsigned int cmd, unsigned long arg)
-{
-        return nilfs_compat_locked_ioctl(inode, filp, cmd, arg);
-}
-
-long nilfs_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
-{
-        struct inode *inode = filp->f_dentry->d_inode;
-
-        switch (cmd) {
-        case NILFS_IOCTL32_CHANGE_CPMODE:
-                return nilfs_compat_ioctl_change_cpmode(
-                        inode, filp, NILFS_IOCTL_CHANGE_CPMODE, arg);
-        case NILFS_IOCTL_DELETE_CHECKPOINT:
-                return nilfs_compat_ioctl_delete_checkpoint(
-                        inode, filp, cmd, arg);
-        case NILFS_IOCTL32_GET_CPINFO:
-                return nilfs_compat_ioctl_get_cpinfo(
-                        inode, filp, NILFS_IOCTL_GET_CPINFO, arg);
-        case NILFS_IOCTL_GET_CPSTAT:
-                return nilfs_compat_ioctl_get_cpstat(inode, filp, cmd, arg);
-        case NILFS_IOCTL32_GET_SUINFO:
-                return nilfs_compat_ioctl_get_suinfo(
-                        inode, filp, NILFS_IOCTL_GET_SUINFO, arg);
-        case NILFS_IOCTL32_GET_SUSTAT:
-                return nilfs_compat_ioctl_get_sustat(
-                        inode, filp, NILFS_IOCTL_GET_SUSTAT, arg);
-        case NILFS_IOCTL32_GET_VINFO:
-                return nilfs_compat_ioctl_get_vinfo(
-                        inode, filp, NILFS_IOCTL_GET_VINFO, arg);
-        case NILFS_IOCTL32_GET_BDESCS:
-                return nilfs_compat_ioctl_get_bdescs(
-                        inode, filp, NILFS_IOCTL_GET_BDESCS, arg);
-        case NILFS_IOCTL32_CLEAN_SEGMENTS:
-                return nilfs_compat_ioctl_clean_segments(
-                        inode, filp, NILFS_IOCTL_CLEAN_SEGMENTS, arg);
-        case NILFS_IOCTL_SYNC:
-                return nilfs_compat_ioctl_sync(inode, filp, cmd, arg);
-        default:
-                return -ENOIOCTLCMD;
-        }
-}
-#endif
diff --git a/fs/nilfs2/nilfs.h b/fs/nilfs2/nilfs.h
index 48c070676cc5..f767644a7242 100644
--- a/fs/nilfs2/nilfs.h
+++ b/fs/nilfs2/nilfs.h
@@ -243,7 +243,6 @@ extern int nilfs_sync_file(struct file *, struct dentry *, int);
 
 /* ioctl.c */
 int nilfs_ioctl(struct inode *, struct file *, unsigned int, unsigned long);
-long nilfs_compat_ioctl(struct file *, unsigned int, unsigned long);
 int nilfs_ioctl_prepare_clean_segments(struct the_nilfs *, void __user *);
 
 /* inode.c */