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, 172 insertions, 0 deletions

diff --git a/fs/coda/cnode.c b/fs/coda/cnode.c
new file mode 100644
index 000000000000..23aeef5aa814
--- /dev/null
+++ b/fs/coda/cnode.c
@@ -0,0 +1,172 @@
+/* cnode related routines for the coda kernel code
+   (C) 1996 Peter Braam
+   */
+
+#include <linux/types.h>
+#include <linux/string.h>
+#include <linux/time.h>
+
+#include <linux/coda.h>
+#include <linux/coda_linux.h>
+#include <linux/coda_fs_i.h>
+#include <linux/coda_psdev.h>
+
+static inline int coda_fideq(struct CodaFid *fid1, struct CodaFid *fid2)
+{
+        return memcmp(fid1, fid2, sizeof(*fid1)) == 0;
+}
+
+static struct inode_operations coda_symlink_inode_operations = {
+        .readlink       = generic_readlink,
+        .follow_link    = page_follow_link_light,
+        .put_link       = page_put_link,
+        .setattr        = coda_setattr,
+};
+
+/* cnode.c */
+static void coda_fill_inode(struct inode *inode, struct coda_vattr *attr)
+{
+        coda_vattr_to_iattr(inode, attr);
+
+        if (S_ISREG(inode->i_mode)) {
+                inode->i_op = &coda_file_inode_operations;
+                inode->i_fop = &coda_file_operations;
+        } else if (S_ISDIR(inode->i_mode)) {
+                inode->i_op = &coda_dir_inode_operations;
+                inode->i_fop = &coda_dir_operations;
+        } else if (S_ISLNK(inode->i_mode)) {
+                inode->i_op = &coda_symlink_inode_operations;
+                inode->i_data.a_ops = &coda_symlink_aops;
+                inode->i_mapping = &inode->i_data;
+        } else
+                init_special_inode(inode, inode->i_mode, huge_decode_dev(attr->va_rdev));
+}
+
+static int coda_test_inode(struct inode *inode, void *data)
+{
+        struct CodaFid *fid = (struct CodaFid *)data;
+        return coda_fideq(&(ITOC(inode)->c_fid), fid);
+}
+
+static int coda_set_inode(struct inode *inode, void *data)
+{
+        struct CodaFid *fid = (struct CodaFid *)data;
+        ITOC(inode)->c_fid = *fid;
+        return 0;
+}
+
+static int coda_fail_inode(struct inode *inode, void *data)
+{
+        return -1;
+}
+
+struct inode * coda_iget(struct super_block * sb, struct CodaFid * fid,
+                         struct coda_vattr * attr)
+{
+        struct inode *inode;
+        struct coda_inode_info *cii;
+        unsigned long hash = coda_f2i(fid);
+
+        inode = iget5_locked(sb, hash, coda_test_inode, coda_set_inode, fid);
+
+        if (!inode)
+                return ERR_PTR(-ENOMEM);
+
+        if (inode->i_state & I_NEW) {
+                cii = ITOC(inode);
+                /* we still need to set i_ino for things like stat(2) */
+                inode->i_ino = hash;
+                cii->c_mapcount = 0;
+                unlock_new_inode(inode);
+        }
+
+        /* always replace the attributes, type might have changed */
+        coda_fill_inode(inode, attr);
+        return inode;
+}
+
+/* this is effectively coda_iget:
+   - get attributes (might be cached)
+   - get the inode for the fid using vfs iget
+   - link the two up if this is needed
+   - fill in the attributes
+*/
+int coda_cnode_make(struct inode **inode, struct CodaFid *fid, struct super_block *sb)
+{
+        struct coda_vattr attr;
+        int error;
+        
+        /* We get inode numbers from Venus -- see venus source */
+        error = venus_getattr(sb, fid, &attr);
+        if ( error ) {
+            *inode = NULL;
+            return error;
+        } 
+
+        *inode = coda_iget(sb, fid, &attr);
+        if ( IS_ERR(*inode) ) {
+                printk("coda_cnode_make: coda_iget failed\n");
+                return PTR_ERR(*inode);
+        }
+        return 0;
+}
+
+
+void coda_replace_fid(struct inode *inode, struct CodaFid *oldfid, 
+                      struct CodaFid *newfid)
+{
+        struct coda_inode_info *cii;
+        unsigned long hash = coda_f2i(newfid);
+        
+        cii = ITOC(inode);
+
+        if (!coda_fideq(&cii->c_fid, oldfid))
+                BUG();
+
+        /* replace fid and rehash inode */
+        /* XXX we probably need to hold some lock here! */
+        remove_inode_hash(inode);
+        cii->c_fid = *newfid;
+        inode->i_ino = hash;
+        __insert_inode_hash(inode, hash);
+}
+
+/* convert a fid to an inode. */
+struct inode *coda_fid_to_inode(struct CodaFid *fid, struct super_block *sb) 
+{
+        struct inode *inode;
+        unsigned long hash = coda_f2i(fid);
+
+        if ( !sb ) {
+                printk("coda_fid_to_inode: no sb!\n");
+                return NULL;
+        }
+
+        inode = iget5_locked(sb, hash, coda_test_inode, coda_fail_inode, fid);
+        if ( !inode )
+                return NULL;
+
+        /* we should never see newly created inodes because we intentionally
+         * fail in the initialization callback */
+        BUG_ON(inode->i_state & I_NEW);
+
+        return inode;
+}
+
+/* the CONTROL inode is made without asking attributes from Venus */
+int coda_cnode_makectl(struct inode **inode, struct super_block *sb)
+{
+        int error = -ENOMEM;
+
+        *inode = new_inode(sb);
+        if (*inode) {
+                (*inode)->i_ino = CTL_INO;
+                (*inode)->i_op = &coda_ioctl_inode_operations;
+                (*inode)->i_fop = &coda_ioctl_operations;
+                (*inode)->i_mode = 0444;
+                error = 0;
+        }
+
+        return error;
+}
+