2.2 KiB
04 — Samba server on Termux (port 4450)
Optional but useful: expose a few folders over SMB so other devices on the LAN can read/write files without ADB.
Why port 4450
Ports below 1024 require root. Samba on Termux runs unprivileged, so we use a high port (4450) and configure clients to point at it explicitly.
\\<device-ip>:4450
Most file managers accept smb://<ip>:4450/.
Install
pkg install -y samba
mkdir -p ~/.config/samba/lock ~/.config/samba/private
Configuration
Copy config/smb.conf.example to ~/.config/samba/smb.conf and edit the share paths to match your device. Then add a Samba user:
smbpasswd -a YOUR_USER
This creates ~/.config/samba/private/passdb.tdb.
Start / stop
smbd -D -s ~/.config/samba/smb.conf 2>>~/.config/samba/samba-startup.log
pkill smbd
The aliases in config/bashrc.snippet (smb-start, smb-stop, smb-restart, smb-status, smb-log) wrap these.
Critical gotcha — msg.lock permissions after restore
If you restore ~/.config/samba/ from a tar backup, the lock/msg.lock directory ends up with mode 0700 because tar preserves the source attributes. smbd requires 0755 on this directory and refuses to start with:
invalid permissions on directory '.../msg.lock': has 0700 should be 0755
Fix:
chmod 0755 ~/.config/samba/lock/msg.lock
This must be re-run after every restore from a backup that includes the samba lock dir.
Connecting from another machine
# Linux
smbclient -L //<device-ip> -p 4450 -U YOUR_USER
mount -t cifs //<device-ip>/Home /mnt -o port=4450,username=YOUR_USER
# Windows: \\<device-ip>:4450 in Explorer
# macOS: Finder → Go → Connect to Server → smb://<device-ip>:4450
Discovery via mDNS
If you also install the companion repo mdns-termux and run its mdns-publish.py, the device shows up as movil.local and SMB clients can use that name directly.
Don't bind to 0.0.0.0 if you don't need to
The default smb.conf example binds to all interfaces. If the device roams across hostile WiFi networks, restrict interfaces = and bind interfaces only = yes to the LAN interface (wlan0 on most devices).