int cifs_dir_notify(struct file *file, unsigned long arg)
{
int xid;
int rc = -EINVAL;
int oplock = FALSE;
struct cifs_sb_info *cifs_sb;
struct cifsTconInfo *pTcon;
char *full_path = NULL;
__u32 filter = FILE_NOTIFY_CHANGE_NAME | FILE_NOTIFY_CHANGE_ATTRIBUTES;
__u16 netfid;
if (experimEnabled == 0)
return 0;
xid = GetXid();
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 20)
cifs_sb = CIFS_SB(file->f_dentry->d_sb);
pTcon = cifs_sb->tcon;
full_path = build_path_from_dentry(file->f_dentry);
#else
cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
pTcon = cifs_sb->tcon;
full_path = build_path_from_dentry(file->f_path.dentry);
#endif
if (full_path == NULL) {
rc = -ENOMEM;
} else {
cFYI(1, ("dir notify on file %s Arg 0x%lx", full_path, arg));
rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN,
GENERIC_READ | SYNCHRONIZE, FILE_SHARE_ALL, 0 /* create options */,
&netfid, &oplock, NULL, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
/* BB fixme - add this handle to a notify handle list */
if (rc) {
cFYI(1, ("Could not open directory for notify"));
} else {
filter = convert_to_cifs_notify_flags(arg);
if (filter != 0) {
rc = CIFSSMBNotify(xid, pTcon,
0 /* no subdirs */, netfid,
filter, file, arg & DN_MULTISHOT,
cifs_sb->local_nls);
} else {
rc = -EINVAL;
}
/* BB add code to close file eventually (at unmount
it would close automatically but may be a way
to do it easily when inode freed or when
notify info is cleared/changed */
cFYI(1, ("notify rc %d", rc));
}
}
FreeXid(xid);
return rc;
}
int cifs_dir_notify(struct file * file, unsigned long arg)
{
int xid;
int rc = -EINVAL;
int oplock = FALSE;
struct cifs_sb_info *cifs_sb;
struct cifsTconInfo *pTcon;
char *full_path = NULL;
__u32 filter = FILE_NOTIFY_CHANGE_NAME | FILE_NOTIFY_CHANGE_ATTRIBUTES;
__u16 netfid;
xid = GetXid();
cifs_sb = CIFS_SB(file->f_dentry->d_sb);
pTcon = cifs_sb->tcon;
down(&file->f_dentry->d_sb->s_vfs_rename_sem);
full_path = build_path_from_dentry(file->f_dentry);
up(&file->f_dentry->d_sb->s_vfs_rename_sem);
if(full_path == NULL) {
rc = -ENOMEM;
} else {
cERROR(1,("cifs dir notify on file %s with arg 0x%lx",full_path,arg)); /* BB removeme BB */
rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN,
GENERIC_READ | SYNCHRONIZE, 0 /* create options */,
&netfid, &oplock,NULL, cifs_sb->local_nls);
/* BB fixme - add this handle to a notify handle list */
if(rc) {
cERROR(1,("Could not open directory for notify")); /* BB remove BB */
} else {
filter = convert_to_cifs_notify_flags(arg);
if(filter != 0) {
rc = CIFSSMBNotify(xid, pTcon, 0 /* no subdirs */, netfid,
filter, cifs_sb->local_nls);
} else {
rc = -EINVAL;
}
/* BB add code to close file eventually (at unmount
it would close automatically but may be a way
to do it easily when inode freed or when
notify info is cleared/changed */
cERROR(1,("notify rc %d",rc));
}
}
FreeXid(xid);
return rc;
}
