int cifs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
{
int err = cifs_revalidate(dentry);
if (!err)
generic_fillattr(dentry->d_inode, stat);
return err;
}
int cifs_getattr(struct vfsmount *mnt, struct dentry *dentry,
struct kstat *stat)
{
int err = cifs_revalidate(dentry);
if (!err) {
generic_fillattr(dentry->d_inode, stat);
stat->blksize = CIFS_MAX_MSGSIZE;
}
return err;
}
static loff_t cifs_llseek(struct file *file, loff_t offset, int origin)
{
/* origin == SEEK_END => we must revalidate the cached file length */
if (origin == SEEK_END) {
int retval;
/* some applications poll for the file length in this strange
way so we must seek to end on non-oplocked files by
setting the revalidate time to zero */
CIFS_I(file->f_path.dentry->d_inode)->time = 0;
retval = cifs_revalidate(file->f_path.dentry);
if (retval < 0)
return (loff_t)retval;
}
return generic_file_llseek_unlocked(file, offset, origin);
}
static int
cifs_d_revalidate(struct dentry *direntry, struct nameidata *nd)
{
int isValid = 1;
if (direntry->d_inode) {
if (cifs_revalidate(direntry))
return 0;
} else {
cFYI(1, ("neg dentry 0x%p name = %s",
direntry, direntry->d_name.name));
if (time_after(jiffies, direntry->d_time + HZ) ||
!lookupCacheEnabled) {
d_drop(direntry);
isValid = 0;
}
}
return isValid;
}
static int
cifs_d_revalidate(struct dentry *direntry, struct nameidata *nd)
{
int isValid = 1;
/* lock_kernel(); *//* surely we do not want to lock the kernel for a whole network round trip which could take seconds */
if (direntry->d_inode) {
if (cifs_revalidate(direntry)) {
/* unlock_kernel(); */
return 0;
}
} else {
cFYI(1,
("In cifs_d_revalidate with no inode but name = %s and dentry 0x%p",
direntry->d_name.name, direntry));
}
/* unlock_kernel(); */
return isValid;
}
