Smbfs

From TechPubs Wiki

smbfs or Samba is a protocol for sharing files similar to NFS, or sshfs. It is historically associated with Microsoft due to its formation on DOS and Netware systems.

Support on IRIX

IRIX never has properly supported smbfs in any practical manner from the kernel. Old Nekoware ports of the userspace tools exist as well as Sharity and Kerberos modules.

It should be considered deprecated for most use cases.