[AFS]: Add "directory write" support.

Add support for the create, link, symlink, unlink, mkdir, rmdir and
rename VFS operations to the in-kernel AFS filesystem.

Also:

 (1) Fix dentry and inode revalidation.  d_revalidate should only look at
     state of the dentry.  Revalidation of the contents of an inode pointed to
     by a dentry is now separate.

 (2) Fix afs_lookup() to hash negative dentries as well as positive ones.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 20 insertions, 1 deletions

diff --git a/fs/afs/misc.c b/fs/afs/misc.c
index 98e9276c46a2..cdb9792d8161 100644
--- a/fs/afs/misc.c
+++ b/fs/afs/misc.c
@@ -22,6 +22,7 @@ int afs_abort_to_error(u32 abort_code)
 {
         switch (abort_code) {
         case 13:                return -EACCES;
+        case 30:                return -EROFS;
         case VSALVAGE:          return -EIO;
         case VNOVNODE:          return -ENOENT;
         case VNOVOL:            return -ENOMEDIUM;
@@ -33,6 +34,24 @@ int afs_abort_to_error(u32 abort_code)
         case VOVERQUOTA:        return -EDQUOT;
         case VBUSY:             return -EBUSY;
         case VMOVED:            return -ENXIO;
-        default:                return -EIO;
+        case 0x2f6df0c:         return -EACCES;
+        case 0x2f6df0f:         return -EBUSY;
+        case 0x2f6df10:         return -EEXIST;
+        case 0x2f6df11:         return -EXDEV;
+        case 0x2f6df13:         return -ENOTDIR;
+        case 0x2f6df14:         return -EISDIR;
+        case 0x2f6df15:         return -EINVAL;
+        case 0x2f6df1a:         return -EFBIG;
+        case 0x2f6df1b:         return -ENOSPC;
+        case 0x2f6df1d:         return -EROFS;
+        case 0x2f6df1e:         return -EMLINK;
+        case 0x2f6df20:         return -EDOM;
+        case 0x2f6df21:         return -ERANGE;
+        case 0x2f6df22:         return -EDEADLK;
+        case 0x2f6df23:         return -ENAMETOOLONG;
+        case 0x2f6df24:         return -ENOLCK;
+        case 0x2f6df26:         return -ENOTEMPTY;
+        case 0x2f6df78:         return -EDQUOT;
+        default:                return -EREMOTEIO;
         }
 }