解决samba只读，但无修改权限的配置

[Share1]
comment = shared by telephony team
valid user = meizu
force group = meizu
force user = meizu
create mask = 0755
create mode = 0664
directory mode = 0775
browseable = yes
path = /home/meizu
public = yes
available = yes
writable = yes

[Share2]
comment = shared by telephony team
valid user = meizu
force group = meizu
force user = meizu
create mask = 0755
create mode = 0664
directory mode = 0775
browseable = yes
path = /share/ext
public = yes
available = yes
writable = yes

1. 一个share对应的是一个访问目录，如果需要访问多个目录就定义多个share即可
2. 解决只读，但是没有修改权限的问题，一定要加valid user，force group，force user三个字段，这样可以确定使用samba的是什么用户，而不是一个临时用户