/* 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, ViceFid *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 ) {
CDEBUG(D_CNODE,
"coda_cnode_make: coda_getvattr returned %d for %s.\n",
error, coda_f2s(fid));
*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);
}
CDEBUG(D_DOWNCALL, "Done making inode: ino %ld, count %d with %s\n",
(*inode)->i_ino, atomic_read(&(*inode)->i_count),
coda_f2s(&ITOC(*inode)->c_fid));
return 0;
}
/*
* This is called when we want to check if the inode has
* changed on the server. Coda makes this easy since the
* cache manager Venus issues a downcall to the kernel when this
* happens
*/
int coda_revalidate_inode(struct dentry *dentry)
{
struct coda_vattr attr;
int error = 0;
int old_mode;
ino_t old_ino;
struct inode *inode = dentry->d_inode;
struct coda_inode_info *cii = ITOC(inode);
CDEBUG(D_INODE, "revalidating: %*s/%*s\n",
dentry->d_name.len, dentry->d_name.name,
dentry->d_parent->d_name.len, dentry->d_parent->d_name.name);
lock_kernel();
if ( !cii->c_flags )
goto ok;
if (cii->c_flags & (C_VATTR | C_PURGE | C_FLUSH)) {
error = venus_getattr(inode->i_sb, &(cii->c_fid), &attr);
if ( error )
goto return_bad_inode;
/* this inode may be lost if:
- it's ino changed
- type changes must be permitted for repair and
missing mount points.
*/
old_mode = inode->i_mode;
old_ino = inode->i_ino;
coda_vattr_to_iattr(inode, &attr);
if ((old_mode & S_IFMT) != (inode->i_mode & S_IFMT)) {
printk("Coda: inode %ld, fid %s changed type!\n",
inode->i_ino, coda_f2s(&(cii->c_fid)));
}
/* the following can happen when a local fid is replaced
with a global one, here we lose and declare the inode bad */
if (inode->i_ino != old_ino)
goto return_bad_inode;
coda_flag_inode_children(inode, C_FLUSH);
cii->c_flags &= ~(C_VATTR | C_PURGE | C_FLUSH);
}
ok:
unlock_kernel();
return 0;
return_bad_inode:
unlock_kernel();
return -EIO;
}
/* 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
*/
struct inode *coda_cnode_make(struct CodaFid *fid, struct super_block *sb)
{
struct coda_vattr attr;
struct inode *inode;
int error;
/* We get inode numbers from Venus -- see venus source */
error = venus_getattr(sb, fid, &attr);
if (error)
return ERR_PTR(error);
inode = coda_iget(sb, fid, &attr);
if (IS_ERR(inode))
pr_warn("%s: coda_iget failed\n", __func__);
return inode;
}
struct inode *coda_cnode_make(struct CodaFid *fid, struct super_block *sb)
{
struct coda_vattr attr;
struct inode *inode;
int error;
error = venus_getattr(sb, fid, &attr);
if (error)
return ERR_PTR(error);
inode = coda_iget(sb, fid, &attr);
if (IS_ERR(inode))
printk("coda_cnode_make: coda_iget failed\n");
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, ViceFid *fid, struct super_block *sb)
{
struct coda_inode_info *cnp;
struct coda_sb_info *sbi= coda_sbp(sb);
struct coda_vattr attr;
int error;
ino_t ino;
ENTRY;
/*
* We get inode numbers from Venus -- see venus source
*/
error = venus_getattr(sb, fid, &attr);
if ( error ) {
CDEBUG(D_CNODE,
"coda_cnode_make: coda_getvattr returned %d for %s.\n",
error, coda_f2s(fid));
*inode = NULL;
return error;
}
ino = attr.va_fileid;
*inode = iget(sb, ino);
if ( !*inode ) {
printk("coda_cnode_make: iget failed\n");
return -ENOMEM;
}
cnp = ITOC(*inode);
/* see if we've got it already */
if ( cnp->c_magic != 0 && coda_fideq(fid, &cnp->c_fid)) {
/* replace the attributes, type might have changed */
coda_fill_inode(*inode, &attr);
return 0;
}
/* not fresh: collision */
if ( cnp->c_magic != 0 ) {
printk("coda_cnode_make on initialized inode %ld, old %s new
%s!\n",
(*inode)->i_ino, coda_f2s(&cnp->c_fid), coda_f2s2(fid));
iput(*inode);
return -ENOENT;
}
/* 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;
}
/*
* This is called when we want to check if the inode has
* changed on the server. Coda makes this easy since the
* cache manager Venus issues a downcall to the kernel when this
* happens
*/
int coda_revalidate_inode(struct inode *inode)
{
struct coda_vattr attr;
int error;
int old_mode;
ino_t old_ino;
struct coda_inode_info *cii = ITOC(inode);
if (!cii->c_flags)
return 0;
if (cii->c_flags & (C_VATTR | C_PURGE | C_FLUSH)) {
error = venus_getattr(inode->i_sb, &(cii->c_fid), &attr);
if (error)
return -EIO;
/* this inode may be lost if:
- it's ino changed
- type changes must be permitted for repair and
missing mount points.
*/
old_mode = inode->i_mode;
old_ino = inode->i_ino;
coda_vattr_to_iattr(inode, &attr);
if ((old_mode & S_IFMT) != (inode->i_mode & S_IFMT)) {
pr_warn("inode %ld, fid %s changed type!\n",
inode->i_ino, coda_f2s(&(cii->c_fid)));
}
/* the following can happen when a local fid is replaced
with a global one, here we lose and declare the inode bad */
if (inode->i_ino != old_ino)
return -EIO;
coda_flag_inode_children(inode, C_FLUSH);
spin_lock(&cii->c_lock);
cii->c_flags &= ~(C_VATTR | C_PURGE | C_FLUSH);
spin_unlock(&cii->c_lock);
}
return 0;
}
int coda_revalidate_inode(struct dentry *dentry)
{
struct coda_vattr attr;
int error;
int old_mode;
ino_t old_ino;
struct inode *inode = dentry->d_inode;
struct coda_inode_info *cii = ITOC(inode);
if (!cii->c_flags)
return 0;
if (cii->c_flags & (C_VATTR | C_PURGE | C_FLUSH)) {
error = venus_getattr(inode->i_sb, &(cii->c_fid), &attr);
if (error)
return -EIO;
old_mode = inode->i_mode;
old_ino = inode->i_ino;
coda_vattr_to_iattr(inode, &attr);
if ((old_mode & S_IFMT) != (inode->i_mode & S_IFMT)) {
printk("Coda: inode %ld, fid %s changed type!\n",
inode->i_ino, coda_f2s(&(cii->c_fid)));
}
if (inode->i_ino != old_ino)
return -EIO;
coda_flag_inode_children(inode, C_FLUSH);
spin_lock(&cii->c_lock);
cii->c_flags &= ~(C_VATTR | C_PURGE | C_FLUSH);
spin_unlock(&cii->c_lock);
}
return 0;
}