quota: split out compat_sys_quotactl support from quota.c

Instead of adding ifdefs just split it into a new file.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>

1 files changed, 0 insertions, 117 deletions

diff --git a/fs/quota/quota.c b/fs/quota/quota.c
index 4506c6596347..95388f9b7356 100644
--- a/fs/quota/quota.c
+++ b/fs/quota/quota.c
@@ -10,7 +10,6 @@
 #include <linux/slab.h>
 #include <asm/current.h>
 #include <asm/uaccess.h>
-#include <linux/compat.h>
 #include <linux/kernel.h>
 #include <linux/security.h>
 #include <linux/syscalls.h>
@@ -340,119 +339,3 @@ SYSCALL_DEFINE4(quotactl, unsigned int, cmd, const char __user *, special,
         drop_super(sb);
         return ret;
 }
-
-#if defined(CONFIG_COMPAT_FOR_U64_ALIGNMENT)
-/*
- * This code works only for 32 bit quota tools over 64 bit OS (x86_64, ia64)
- * and is necessary due to alignment problems.
- */
-struct compat_if_dqblk {
-        compat_u64 dqb_bhardlimit;
-        compat_u64 dqb_bsoftlimit;
-        compat_u64 dqb_curspace;
-        compat_u64 dqb_ihardlimit;
-        compat_u64 dqb_isoftlimit;
-        compat_u64 dqb_curinodes;
-        compat_u64 dqb_btime;
-        compat_u64 dqb_itime;
-        compat_uint_t dqb_valid;
-};
-
-/* XFS structures */
-struct compat_fs_qfilestat {
-        compat_u64 dqb_bhardlimit;
-        compat_u64 qfs_nblks;
-        compat_uint_t qfs_nextents;
-};
-
-struct compat_fs_quota_stat {
-        __s8            qs_version;
-        __u16           qs_flags;
-        __s8            qs_pad;
-        struct compat_fs_qfilestat      qs_uquota;
-        struct compat_fs_qfilestat      qs_gquota;
-        compat_uint_t   qs_incoredqs;
-        compat_int_t    qs_btimelimit;
-        compat_int_t    qs_itimelimit;
-        compat_int_t    qs_rtbtimelimit;
-        __u16           qs_bwarnlimit;
-        __u16           qs_iwarnlimit;
-};
-
-asmlinkage long sys32_quotactl(unsigned int cmd, const char __user *special,
-                                                qid_t id, void __user *addr)
-{
-        unsigned int cmds;
-        struct if_dqblk __user *dqblk;
-        struct compat_if_dqblk __user *compat_dqblk;
-        struct fs_quota_stat __user *fsqstat;
-        struct compat_fs_quota_stat __user *compat_fsqstat;
-        compat_uint_t data;
-        u16 xdata;
-        long ret;
-
-        cmds = cmd >> SUBCMDSHIFT;
-
-        switch (cmds) {
-        case Q_GETQUOTA:
-                dqblk = compat_alloc_user_space(sizeof(struct if_dqblk));
-                compat_dqblk = addr;
-                ret = sys_quotactl(cmd, special, id, dqblk);
-                if (ret)
-                        break;
-                if (copy_in_user(compat_dqblk, dqblk, sizeof(*compat_dqblk)) ||
-                        get_user(data, &dqblk->dqb_valid) ||
-                        put_user(data, &compat_dqblk->dqb_valid))
-                        ret = -EFAULT;
-                break;
-        case Q_SETQUOTA:
-                dqblk = compat_alloc_user_space(sizeof(struct if_dqblk));
-                compat_dqblk = addr;
-                ret = -EFAULT;
-                if (copy_in_user(dqblk, compat_dqblk, sizeof(*compat_dqblk)) ||
-                        get_user(data, &compat_dqblk->dqb_valid) ||
-                        put_user(data, &dqblk->dqb_valid))
-                        break;
-                ret = sys_quotactl(cmd, special, id, dqblk);
-                break;
-        case Q_XGETQSTAT:
-                fsqstat = compat_alloc_user_space(sizeof(struct fs_quota_stat));
-                compat_fsqstat = addr;
-                ret = sys_quotactl(cmd, special, id, fsqstat);
-                if (ret)
-                        break;
-                ret = -EFAULT;
-                /* Copying qs_version, qs_flags, qs_pad */
-                if (copy_in_user(compat_fsqstat, fsqstat,
-                        offsetof(struct compat_fs_quota_stat, qs_uquota)))
-                        break;
-                /* Copying qs_uquota */
-                if (copy_in_user(&compat_fsqstat->qs_uquota,
-                        &fsqstat->qs_uquota,
-                        sizeof(compat_fsqstat->qs_uquota)) ||
-                        get_user(data, &fsqstat->qs_uquota.qfs_nextents) ||
-                        put_user(data, &compat_fsqstat->qs_uquota.qfs_nextents))
-                        break;
-                /* Copying qs_gquota */
-                if (copy_in_user(&compat_fsqstat->qs_gquota,
-                        &fsqstat->qs_gquota,
-                        sizeof(compat_fsqstat->qs_gquota)) ||
-                        get_user(data, &fsqstat->qs_gquota.qfs_nextents) ||
-                        put_user(data, &compat_fsqstat->qs_gquota.qfs_nextents))
-                        break;
-                /* Copying the rest */
-                if (copy_in_user(&compat_fsqstat->qs_incoredqs,
-                        &fsqstat->qs_incoredqs,
-                        sizeof(struct compat_fs_quota_stat) -
-                        offsetof(struct compat_fs_quota_stat, qs_incoredqs)) ||
-                        get_user(xdata, &fsqstat->qs_iwarnlimit) ||
-                        put_user(xdata, &compat_fsqstat->qs_iwarnlimit))
-                        break;
-                ret = 0;
-                break;
-        default:
-                ret = sys_quotactl(cmd, special, id, addr);
-        }
-        return ret;
-}
-#endif