Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 243 insertions, 0 deletions

diff --git a/fs/ext3/ioctl.c b/fs/ext3/ioctl.c
new file mode 100644
index 000000000000..706d68608381
--- /dev/null
+++ b/fs/ext3/ioctl.c
@@ -0,0 +1,243 @@
+/*
+ * linux/fs/ext3/ioctl.c
+ *
+ * Copyright (C) 1993, 1994, 1995
+ * Remy Card (card@masi.ibp.fr)
+ * Laboratoire MASI - Institut Blaise Pascal
+ * Universite Pierre et Marie Curie (Paris VI)
+ */
+
+#include <linux/fs.h>
+#include <linux/jbd.h>
+#include <linux/ext3_fs.h>
+#include <linux/ext3_jbd.h>
+#include <linux/time.h>
+#include <asm/uaccess.h>
+
+
+int ext3_ioctl (struct inode * inode, struct file * filp, unsigned int cmd,
+                unsigned long arg)
+{
+        struct ext3_inode_info *ei = EXT3_I(inode);
+        unsigned int flags;
+        unsigned short rsv_window_size;
+
+        ext3_debug ("cmd = %u, arg = %lu\n", cmd, arg);
+
+        switch (cmd) {
+        case EXT3_IOC_GETFLAGS:
+                flags = ei->i_flags & EXT3_FL_USER_VISIBLE;
+                return put_user(flags, (int __user *) arg);
+        case EXT3_IOC_SETFLAGS: {
+                handle_t *handle = NULL;
+                int err;
+                struct ext3_iloc iloc;
+                unsigned int oldflags;
+                unsigned int jflag;
+
+                if (IS_RDONLY(inode))
+                        return -EROFS;
+
+                if ((current->fsuid != inode->i_uid) && !capable(CAP_FOWNER))
+                        return -EACCES;
+
+                if (get_user(flags, (int __user *) arg))
+                        return -EFAULT;
+
+                if (!S_ISDIR(inode->i_mode))
+                        flags &= ~EXT3_DIRSYNC_FL;
+
+                oldflags = ei->i_flags;
+
+                /* The JOURNAL_DATA flag is modifiable only by root */
+                jflag = flags & EXT3_JOURNAL_DATA_FL;
+
+                /*
+                 * The IMMUTABLE and APPEND_ONLY flags can only be changed by
+                 * the relevant capability.
+                 *
+                 * This test looks nicer. Thanks to Pauline Middelink
+                 */
+                if ((flags ^ oldflags) & (EXT3_APPEND_FL | EXT3_IMMUTABLE_FL)) {
+                        if (!capable(CAP_LINUX_IMMUTABLE))
+                                return -EPERM;
+                }
+
+                /*
+                 * The JOURNAL_DATA flag can only be changed by
+                 * the relevant capability.
+                 */
+                if ((jflag ^ oldflags) & (EXT3_JOURNAL_DATA_FL)) {
+                        if (!capable(CAP_SYS_RESOURCE))
+                                return -EPERM;
+                }
+
+
+                handle = ext3_journal_start(inode, 1);
+                if (IS_ERR(handle))
+                        return PTR_ERR(handle);
+                if (IS_SYNC(inode))
+                        handle->h_sync = 1;
+                err = ext3_reserve_inode_write(handle, inode, &iloc);
+                if (err)
+                        goto flags_err;
+
+                flags = flags & EXT3_FL_USER_MODIFIABLE;
+                flags |= oldflags & ~EXT3_FL_USER_MODIFIABLE;
+                ei->i_flags = flags;
+
+                ext3_set_inode_flags(inode);
+                inode->i_ctime = CURRENT_TIME_SEC;
+
+                err = ext3_mark_iloc_dirty(handle, inode, &iloc);
+flags_err:
+                ext3_journal_stop(handle);
+                if (err)
+                        return err;
+
+                if ((jflag ^ oldflags) & (EXT3_JOURNAL_DATA_FL))
+                        err = ext3_change_inode_journal_flag(inode, jflag);
+                return err;
+        }
+        case EXT3_IOC_GETVERSION:
+        case EXT3_IOC_GETVERSION_OLD:
+                return put_user(inode->i_generation, (int __user *) arg);
+        case EXT3_IOC_SETVERSION:
+        case EXT3_IOC_SETVERSION_OLD: {
+                handle_t *handle;
+                struct ext3_iloc iloc;
+                __u32 generation;
+                int err;
+
+                if ((current->fsuid != inode->i_uid) && !capable(CAP_FOWNER))
+                        return -EPERM;
+                if (IS_RDONLY(inode))
+                        return -EROFS;
+                if (get_user(generation, (int __user *) arg))
+                        return -EFAULT;
+
+                handle = ext3_journal_start(inode, 1);
+                if (IS_ERR(handle))
+                        return PTR_ERR(handle);
+                err = ext3_reserve_inode_write(handle, inode, &iloc);
+                if (err == 0) {
+                        inode->i_ctime = CURRENT_TIME_SEC;
+                        inode->i_generation = generation;
+                        err = ext3_mark_iloc_dirty(handle, inode, &iloc);
+                }
+                ext3_journal_stop(handle);
+                return err;
+        }
+#ifdef CONFIG_JBD_DEBUG
+        case EXT3_IOC_WAIT_FOR_READONLY:
+                /*
+                 * This is racy - by the time we're woken up and running,
+                 * the superblock could be released.  And the module could
+                 * have been unloaded.  So sue me.
+                 *
+                 * Returns 1 if it slept, else zero.
+                 */
+                {
+                        struct super_block *sb = inode->i_sb;
+                        DECLARE_WAITQUEUE(wait, current);
+                        int ret = 0;
+
+                        set_current_state(TASK_INTERRUPTIBLE);
+                        add_wait_queue(&EXT3_SB(sb)->ro_wait_queue, &wait);
+                        if (timer_pending(&EXT3_SB(sb)->turn_ro_timer)) {
+                                schedule();
+                                ret = 1;
+                        }
+                        remove_wait_queue(&EXT3_SB(sb)->ro_wait_queue, &wait);
+                        return ret;
+                }
+#endif
+        case EXT3_IOC_GETRSVSZ:
+                if (test_opt(inode->i_sb, RESERVATION)
+                        && S_ISREG(inode->i_mode)
+                        && ei->i_block_alloc_info) {
+                        rsv_window_size = ei->i_block_alloc_info->rsv_window_node.rsv_goal_size;
+                        return put_user(rsv_window_size, (int __user *)arg);
+                }
+                return -ENOTTY;
+        case EXT3_IOC_SETRSVSZ: {
+
+                if (!test_opt(inode->i_sb, RESERVATION) ||!S_ISREG(inode->i_mode))
+                        return -ENOTTY;
+
+                if (IS_RDONLY(inode))
+                        return -EROFS;
+
+                if ((current->fsuid != inode->i_uid) && !capable(CAP_FOWNER))
+                        return -EACCES;
+
+                if (get_user(rsv_window_size, (int __user *)arg))
+                        return -EFAULT;
+
+                if (rsv_window_size > EXT3_MAX_RESERVE_BLOCKS)
+                        rsv_window_size = EXT3_MAX_RESERVE_BLOCKS;
+
+                /*
+                 * need to allocate reservation structure for this inode
+                 * before set the window size
+                 */
+                down(&ei->truncate_sem);
+                if (!ei->i_block_alloc_info)
+                        ext3_init_block_alloc_info(inode);
+
+                if (ei->i_block_alloc_info){
+                        struct ext3_reserve_window_node *rsv = &ei->i_block_alloc_info->rsv_window_node;
+                        rsv->rsv_goal_size = rsv_window_size;
+                }
+                up(&ei->truncate_sem);
+                return 0;
+        }
+        case EXT3_IOC_GROUP_EXTEND: {
+                unsigned long n_blocks_count;
+                struct super_block *sb = inode->i_sb;
+                int err;
+
+                if (!capable(CAP_SYS_RESOURCE))
+                        return -EPERM;
+
+                if (IS_RDONLY(inode))
+                        return -EROFS;
+
+                if (get_user(n_blocks_count, (__u32 __user *)arg))
+                        return -EFAULT;
+
+                err = ext3_group_extend(sb, EXT3_SB(sb)->s_es, n_blocks_count);
+                journal_lock_updates(EXT3_SB(sb)->s_journal);
+                journal_flush(EXT3_SB(sb)->s_journal);
+                journal_unlock_updates(EXT3_SB(sb)->s_journal);
+
+                return err;
+        }
+        case EXT3_IOC_GROUP_ADD: {
+                struct ext3_new_group_data input;
+                struct super_block *sb = inode->i_sb;
+                int err;
+
+                if (!capable(CAP_SYS_RESOURCE))
+                        return -EPERM;
+
+                if (IS_RDONLY(inode))
+                        return -EROFS;
+
+                if (copy_from_user(&input, (struct ext3_new_group_input __user *)arg,
+                                sizeof(input)))
+                        return -EFAULT;
+
+                err = ext3_group_add(sb, &input);
+                journal_lock_updates(EXT3_SB(sb)->s_journal);
+                journal_flush(EXT3_SB(sb)->s_journal);
+                journal_unlock_updates(EXT3_SB(sb)->s_journal);
+
+                return err;
+        }
+
+
+        default:
+                return -ENOTTY;
+        }
+}