我认为这应该很容易，但我是 SELinux 的新手。我有一个 CentOS 6 文件服务器。我在 /var/media 中有一些 LVM 文件系统，我想使用 Samba 和 FTP 与 Windows 计算机共享它们。我正在使用 ACL，以便权限在 Windows 中正常工作（我有一个两个用户网络）。我发现 Samba 虽然可以工作，但文件传输速度很慢，所以我想尝试一下 FTP。
我想继续使用 SELinux 来保证安全，但我在通过 FTP 访问文件时遇到了麻烦。我可以读取文件并写入我的主目录。但是我无法写入 /var/media 中的文件（使用 samba_share_t 上下文）。
我认为这allow_ftpd_use_cifs应该可以解决这个问题。我可以让它与 一起工作allow_ftpd_full_access，但我宁愿避免这种情况。我缺少什么？
以下是相关信息：
[mdurak@srv ~]$ ls -Z /var/media
drwxrwxr-x+ mdurak admins system_u:object_r:samba_share_t:s0 docs
drwxrwxr-x+ mdurak admins system_u:object_r:samba_share_t:s0 library
drwxrwxr-x+ mdurak admins system_u:object_r:samba_share_t:s0 photos
drwxrwxr-x+ mdurak admins system_u:object_r:samba_share_t:s0 projects
[mdurak@srv ~]$ sudo semanage boolean -l | grep ftp
ftp_home_dir (on , on) Allow ftp to read and write files in the user home directories
tftp_anon_write (off , off) Allow tftp to modify public files used for public file transfer services.
allow_ftpd_full_access (off , off) Allow ftp servers to login to local users and read/write all files on the system, governed by DAC.
allow_ftpd_use_cifs (on , on) Allow ftp servers to use cifs used for public file transfer services.
allow_ftpd_use_nfs (off , off) Allow ftp servers to use nfs used for public file transfer services.
allow_ftpd_anon_write (on , on) Allow ftp servers to upload files, used for public file transfer services. Directories must be labeled public_content_rw_t.
ftpd_use_passive_mode (off , off) Allow ftp servers to use bind to all unreserved ports for passive mode
ftpd_connect_db (off , off) Allow ftp servers to use connect to mysql database
httpd_enable_ftp_server (off , off) Allow httpd to act as a FTP server by listening on the ftp port.
[mdurak@srv ~]$ sudo semanage boolean -l | grep samba
samba_domain_controller (off , off) Allow samba to act as the domain controller, add users, groups and change passwords.
samba_portmapper (off , off) Allow samba to act as a portmapper
samba_enable_home_dirs (on , on) Allow samba to share users home directories.
samba_export_all_ro (off , off) Allow samba to share any file/directory read only.
samba_export_all_rw (off , off) Allow samba to share any file/directory read/write.
use_samba_home_dirs (off , off) Support SAMBA home directories
samba_create_home_dirs (off , off) Allow samba to create new home directories (e.g. via PAM)
cdrecord_read_content (off , off) Allow cdrecord to read various content. nfs, samba, removable devices, user temp and untrusted content files
allow_smbd_anon_write (off , off) Allow samba to modify public files used for public file transfer services. Files/Directories must be labeled public_content_rw_t.
samba_share_fusefs (off , off) Allow samba to export ntfs/fusefs volumes.
samba_share_nfs (off , off) Allow samba to export NFS volumes.
samba_run_unconfined (off , off) Allow samba to run unconfined scripts
sanlock_use_samba (off , off) Allow sanlock to manage cifs files
virt_us
e_samba (off , off) 允许 virt 管理 cifs 文件
/etc/vsftpd/vsftpd.conf
anonymous_enable=NO
local_enable=YES
write_enable=YES
local_umask=022
dirmessage_enable=YES
connect_from_port_20=YES
xferlog_std_format=YES
chroot_local_user=YES
chroot_list_enable=YES
# mdurak is in the chroot_list
chroot_list_file=/etc/vsftpd/chroot_list
listen=YES
pam_service_name=vsftpd
userlist_enable=YES
tcp_wrappers=YES
pasv_enable=YES
local_root=/var/media
尝试在 FTP 中创建目录（审核日志中也有一条拒绝消息，因此我知道这是 SELinux 问题）。
Command: CWD /var/media/library/music
Response: 250 Directory successfully changed.
Command: MKD sdff
Response: 550 Create directory operation failed.
Command: MKD /var/media/library/music/sdff
Response: 550 Create directory operation failed.
答案1
我从这里想通了：http://selinuxproject.org/page/SambaRecipes
必须将文件夹上下文设置为public_content_rw_t并执行
setsebool -P allow_smbd_anon_write=1
现在我可以通过Samba和FTP进行写入（以后支持其他域也会很容易）