Install Samba4 with Homebrew

README.md

Install Samba4 with Homebrew

brew install samba

Config

I created directories for sharing at /Users/SharedFolder

I created my samba config at /usr/local/etc/smb.conf (default path)

# /usr/local/etc/smb.conf

[global]
server string = Samba Server Version %v
security = user
passdb backend = tdbsam:/usr/local/etc/passdb.tdb
map to guest = Bad user

[SharedFolder]
path = /Users/SharedFolder

valid users = share
write list = share 

Create a user in System Preferences -> Users & Groups named share. It can be a Sharing Only user rather than Standard or Administrator.

Make sure that the share user owns the SharedFolder directory

Samba users must be real users on your system. You cannot make up fake users. That is why we created the share. share is explicitly for authenticating against our system over Samba

You can set a Samba password for the share like so.

smbpasswd -a share

Set Samba up to launch on boot

curl -s https://gist.githubusercontent.com/oceanyeo/949a91fee4f81675817848ceba4e4bc7/raw/setup.sh | bash

org.samba.nmbd.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
    <dict>
        <key>KeepAlive</key>
        <true/>
        <key>Label</key>
        <string>org.samba.nmbd</string>
        <key>ProgramArguments</key>
        <array>
            <string>/usr/local/sbin/nmbd</string>
            <string>-s</string>
            <string>/usr/local/etc/samba/smb.conf</string>
        </array>
        <key>RunAtLoad</key>
        <true/>
    </dict>
</plist>

org.samba.smbd.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
    <dict>
        <key>KeepAlive</key>
        <true/>
        <key>Label</key>
        <string>org.samba.smbd</string>
        <key>ProgramArguments</key>
        <array>
            <string>/usr/local/sbin/samba-dot-org-smbd</string>
            <string>-s</string>
            <string>/usr/local/etc/samba/smb.conf</string>
        </array>
        <key>RunAtLoad</key>
        <true/>
    </dict>
</plist>

setup.sh

#!/usr/bin/env bash

function unloadctl(){
	label=$1
	sudo launchctl list | grep ${label} > /dev/null
	if (($? == 0));then
		sudo launchctl stop ${label}
		sudo launchctl unload -w /System/Library/LaunchDaemons/${label}.plist
	fi
}

function loadctl(){
	label=$1
	sudo launchctl list | grep ${label} > /dev/null
	if (($? == 0));then
		sudo launchctl stop ${label}
		sudo launchctl unload -w /Library/LaunchDaemons/${label}.plist
	fi
	sudo launchctl load -w /Library/LaunchDaemons/${label}.plist
	sudo launchctl start ${label}
}

# disable system netbiosd-daemon
unloadctl 'com.apple.netbiosd'
# disable system samba-daemon
unloadctl 'com.apple.smbd'

# the directory smbd will use for storing such files as smbpasswd and secrets.tdb.
custom_private_dir=/usr/local/etc/samba
if [[ ! -d $custom_private_dir ]];then 
	sudo mkdir -p $custom_private_dir/private
fi

curl -O -sS https://gist.githubusercontent.com/oceanyeo/949a91fee4f81675817848ceba4e4bc7/raw/smb.conf
sudo mv -f $(pwd)/smb.conf $custom_private_dir

# install new samba into launchd
curl -O -sS https://gist.githubusercontent.com/oceanyeo/949a91fee4f81675817848ceba4e4bc7/raw/org.samba.smbd.plist
sudo mv $(pwd)/org.samba.smbd.plist /Library/LaunchDaemons/
sudo chown root:wheel /Library/LaunchDaemons/org.samba.smbd.plist

curl -O -sS https://gist.githubusercontent.com/oceanyeo/949a91fee4f81675817848ceba4e4bc7/raw/org.samba.nmbd.plist
sudo mv $(pwd)/org.samba.nmbd.plist /Library/LaunchDaemons/
sudo chown root:wheel /Library/LaunchDaemons/org.samba.nmbd.plist

loadctl 'org.samba.smbd'
loadctl 'org.samba.nmbd'

# set smb password for the share user
sudo smbpasswd -c "${custom_private_dir}/smb.conf" -a share

smb.conf

# /usr/local/etc/samba/smb.conf

[global]
workgroup = WORKGROUP
server string = Samba Server Version %v
security = user
passdb backend = tdbsam
map to guest = Bad user
private dir = /usr/local/etc/samba/private

vfs objects = fruit streams_xattr  
fruit:metadata = stream
fruit:model = MacSamba
fruit:posix_rename = yes 
fruit:veto_appledouble = no
fruit:nfs_aces = no
fruit:wipe_intentionally_left_blank_rfork = yes 
fruit:delete_empty_adfiles = yes 
fruit:time machine = yes

[SharedFolder]
path = /Users/SharedFolder

valid users = share
write list = share