JFS: Add missing file from fa3241d24cf1182b0ffb6e4d412c3bc2a2ab7bf6

My mistake here.  I failed to checkin fs/jfs/ioctl.c

Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>

diff --git a/fs/jfs/ioctl.c b/fs/jfs/ioctl.c
new file mode 100644 (file)
index 0000000..67b3774
--- /dev/null
+++ b/fs/jfs/ioctl.c
@@ -0,0 +1,107 @@
+/*
+ * linux/fs/jfs/ioctl.c
+ *
+ * Copyright (C) 2006 Herbert Poetzl
+ * adapted from Remy Card's ext2/ioctl.c
+ */
+
+#include <linux/fs.h>
+#include <linux/ext2_fs.h>
+#include <linux/ctype.h>
+#include <linux/capability.h>
+#include <linux/time.h>
+#include <asm/current.h>
+#include <asm/uaccess.h>
+
+#include "jfs_incore.h"
+#include "jfs_dinode.h"
+#include "jfs_inode.h"
+
+
+static struct {
+       long jfs_flag;
+       long ext2_flag;
+} jfs_map[] = {
+       {JFS_NOATIME_FL, EXT2_NOATIME_FL},
+       {JFS_DIRSYNC_FL, EXT2_DIRSYNC_FL},
+       {JFS_SYNC_FL, EXT2_SYNC_FL},
+       {JFS_SECRM_FL, EXT2_SECRM_FL},
+       {JFS_UNRM_FL, EXT2_UNRM_FL},
+       {JFS_APPEND_FL, EXT2_APPEND_FL},
+       {JFS_IMMUTABLE_FL, EXT2_IMMUTABLE_FL},
+       {0, 0},
+};
+
+static long jfs_map_ext2(unsigned long flags, int from)
+{
+       int index=0;
+       long mapped=0;
+
+       while (jfs_map[index].jfs_flag) {
+               if (from) {
+                       if (jfs_map[index].ext2_flag & flags)
+                               mapped |= jfs_map[index].jfs_flag;
+               } else {
+                       if (jfs_map[index].jfs_flag & flags)
+                               mapped |= jfs_map[index].ext2_flag;
+               }
+               index++;
+       }
+       return mapped;
+}
+
+
+int jfs_ioctl(struct inode * inode, struct file * filp, unsigned int cmd,
+               unsigned long arg)
+{
+       struct jfs_inode_info *jfs_inode = JFS_IP(inode);
+       unsigned int flags;
+
+       switch (cmd) {
+       case JFS_IOC_GETFLAGS:
+               flags = jfs_inode->mode2 & JFS_FL_USER_VISIBLE;
+               flags = jfs_map_ext2(flags, 0);
+               return put_user(flags, (int __user *) arg);
+       case JFS_IOC_SETFLAGS: {
+               unsigned int oldflags;
+
+               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;
+
+               flags = jfs_map_ext2(flags, 1);
+               if (!S_ISDIR(inode->i_mode))
+                       flags &= ~JFS_DIRSYNC_FL;
+
+               oldflags = jfs_inode->mode2;
+
+               /*
+                * The IMMUTABLE and APPEND_ONLY flags can only be changed by
+                * the relevant capability.
+                */
+               if ((oldflags & JFS_IMMUTABLE_FL) ||
+                       ((flags ^ oldflags) &
+                       (JFS_APPEND_FL | JFS_IMMUTABLE_FL))) {
+                       if (!capable(CAP_LINUX_IMMUTABLE))
+                               return -EPERM;
+               }
+
+               flags = flags & JFS_FL_USER_MODIFIABLE;
+               flags |= oldflags & ~JFS_FL_USER_MODIFIABLE;
+               jfs_inode->mode2 = flags;
+
+               jfs_set_inode_flags(inode);
+               inode->i_ctime = CURRENT_TIME_SEC;
+               mark_inode_dirty(inode);
+               return 0;
+       }
+       default:
+               return -ENOTTY;
+       }
+}
+