[PATCH] x86-64: Improve error handling for overlapping PXMs in SRAT.

[pandora-kernel.git] / fs / compat.c

diff --git a/fs/compat.c b/fs/compat.c
index 6b06b6b..ac3fb9e 100644 (file)
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -310,96 +310,6 @@ static int __init init_sys32_ioctl(void)
 
 __initcall(init_sys32_ioctl);
 
-int register_ioctl32_conversion(unsigned int cmd,
-                               ioctl_trans_handler_t handler)
-{
-       struct ioctl_trans *t;
-       struct ioctl_trans *new_t;
-       unsigned long hash = ioctl32_hash(cmd);
-
-       new_t = kmalloc(sizeof(*new_t), GFP_KERNEL);
-       if (!new_t)
-               return -ENOMEM;
-
-       down_write(&ioctl32_sem);
-       for (t = ioctl32_hash_table[hash]; t; t = t->next) {
-               if (t->cmd == cmd) {
-                       printk(KERN_ERR "Trying to register duplicated ioctl32 "
-                                       "handler %x\n", cmd);
-                       up_write(&ioctl32_sem);
-                       kfree(new_t);
-                       return -EINVAL; 
-               }
-       }
-       new_t->next = NULL;
-       new_t->cmd = cmd;
-       new_t->handler = handler;
-       ioctl32_insert_translation(new_t);
-
-       up_write(&ioctl32_sem);
-       return 0;
-}
-EXPORT_SYMBOL(register_ioctl32_conversion);
-
-static inline int builtin_ioctl(struct ioctl_trans *t)
-{ 
-       return t >= ioctl_start && t < (ioctl_start + ioctl_table_size);
-} 
-
-/* Problem: 
-   This function cannot unregister duplicate ioctls, because they are not
-   unique.
-   When they happen we need to extend the prototype to pass the handler too. */
-
-int unregister_ioctl32_conversion(unsigned int cmd)
-{
-       unsigned long hash = ioctl32_hash(cmd);
-       struct ioctl_trans *t, *t1;
-
-       down_write(&ioctl32_sem);
-
-       t = ioctl32_hash_table[hash];
-       if (!t) { 
-               up_write(&ioctl32_sem);
-               return -EINVAL;
-       } 
-
-       if (t->cmd == cmd) { 
-               if (builtin_ioctl(t)) {
-                       printk("%p tried to unregister builtin ioctl %x\n",
-                              __builtin_return_address(0), cmd);
-               } else { 
-                       ioctl32_hash_table[hash] = t->next;
-                       up_write(&ioctl32_sem);
-                       kfree(t);
-                       return 0;
-               }
-       } 
-       while (t->next) {
-               t1 = t->next;
-               if (t1->cmd == cmd) { 
-                       if (builtin_ioctl(t1)) {
-                               printk("%p tried to unregister builtin "
-                                       "ioctl %x\n",
-                                       __builtin_return_address(0), cmd);
-                               goto out;
-                       } else { 
-                               t->next = t1->next;
-                               up_write(&ioctl32_sem);
-                               kfree(t1);
-                               return 0;
-                       }
-               }
-               t = t1;
-       }
-       printk(KERN_ERR "Trying to free unknown 32bit ioctl handler %x\n",
-                               cmd);
-out:
-       up_write(&ioctl32_sem);
-       return -EINVAL;
-}
-EXPORT_SYMBOL(unregister_ioctl32_conversion); 
-
 static void compat_ioctl_error(struct file *filp, unsigned int fd,
                unsigned int cmd, unsigned long arg)
 {
@@ -720,14 +630,14 @@ compat_sys_io_submit(aio_context_t ctx_id, int nr, u32 __user *iocb)
 struct compat_ncp_mount_data {
        compat_int_t version;
        compat_uint_t ncp_fd;
-       compat_uid_t mounted_uid;
+       __compat_uid_t mounted_uid;
        compat_pid_t wdog_pid;
        unsigned char mounted_vol[NCP_VOLNAME_LEN + 1];
        compat_uint_t time_out;
        compat_uint_t retry_count;
        compat_uint_t flags;
-       compat_uid_t uid;
-       compat_gid_t gid;
+       __compat_uid_t uid;
+       __compat_gid_t gid;
        compat_mode_t file_mode;
        compat_mode_t dir_mode;
 };
@@ -784,9 +694,9 @@ static void *do_ncp_super_data_conv(void *raw_data)
 
 struct compat_smb_mount_data {
        compat_int_t version;
-       compat_uid_t mounted_uid;
-       compat_uid_t uid;
-       compat_gid_t gid;
+       __compat_uid_t mounted_uid;
+       __compat_uid_t uid;
+       __compat_gid_t gid;
        compat_mode_t file_mode;
        compat_mode_t dir_mode;
 };
@@ -1364,6 +1274,16 @@ out:
        return ret;
 }
 
+/*
+ * Exactly like fs/open.c:sys_open(), except that it doesn't set the
+ * O_LARGEFILE flag.
+ */
+asmlinkage long
+compat_sys_open(const char __user *filename, int flags, int mode)
+{
+       return do_sys_open(filename, flags, mode);
+}
+
 /*
  * compat_count() counts the number of arguments/envelopes. It is basically
  * a copy of count() from fs/exec.c, except that it works with 32 bit argv
@@ -1699,6 +1619,7 @@ compat_sys_select(int n, compat_ulong_t __user *inp, compat_ulong_t __user *outp
        char *bits;
        long timeout;
        int size, max_fdset, ret = -EINVAL;
+       struct fdtable *fdt;
 
        timeout = MAX_SCHEDULE_TIMEOUT;
        if (tvp) {
@@ -1724,7 +1645,10 @@ compat_sys_select(int n, compat_ulong_t __user *inp, compat_ulong_t __user *outp
                goto out_nofds;
 
        /* max_fdset can increase, so grab it once to avoid race */
-       max_fdset = current->files->max_fdset;
+       rcu_read_lock();
+       fdt = files_fdtable(current->files);
+       max_fdset = fdt->max_fdset;
+       rcu_read_unlock();
        if (n > max_fdset)
                n = max_fdset;
 
@@ -1808,8 +1732,8 @@ struct compat_nfsctl_export {
        compat_dev_t    ex32_dev;
        compat_ino_t    ex32_ino;
        compat_int_t    ex32_flags;
-       compat_uid_t    ex32_anon_uid;
-       compat_gid_t    ex32_anon_gid;
+       __compat_uid_t  ex32_anon_uid;
+       __compat_gid_t  ex32_anon_gid;
 };
 
 struct compat_nfsctl_fdparm {