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Add godoc for selinux package 

Docker-DCO-1.1-Signed-off-by: Paul Morie <pmorie@gmail.com> (github: pmorie)
This commit is contained in:
Paul Morie 2015-03-06 13:23:55 -05:00
parent ea6e255f45
commit 4fc29224cf
1 changed files with 12 additions and 4 deletions
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16
selinux/selinux.go
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@ -34,8 +34,8 @@ var (
spaceRegex = regexp.MustCompile(`^([^=]+) (.*)$`)
mcsList = make(map[string]bool)
selinuxfs = "unknown"
selinuxEnabled = false
selinuxEnabledChecked = false
selinuxEnabled = false // Stores whether selinux is currently enabled
selinuxEnabledChecked = false // Stores whether selinux enablement has been checked or established yet
)
type SELinuxContext map[string]string
@ -45,6 +45,11 @@ func SetDisabled() {
selinuxEnabled, selinuxEnabledChecked = false, true
}
// getSelinuxMountPoint returns the path to the mountpoint of an selinuxfs
// filesystem or an empty string if no mountpoint is found. Selinuxfs is
// a proc-like pseudo-filesystem that exposes the selinux policy API to
// processes. The existence of an selinuxfs mount is used to determine
// whether selinux is currently enabled or not.
func getSelinuxMountPoint() string {
if selinuxfs != "unknown" {
return selinuxfs
@ -71,6 +76,7 @@ func getSelinuxMountPoint() string {
return selinuxfs
}
// SelinuxEnabled returns whether selinux is currently enabled.
func SelinuxEnabled() bool {
if selinuxEnabledChecked {
return selinuxEnabled
@ -142,11 +148,12 @@ func readCon(name string) (string, error) {
return val, err
}
// Setfilecon sets the SELinux label for this path or returns an error.
func Setfilecon(path string, scon string) error {
return system.Lsetxattr(path, xattrNameSelinux, []byte(scon), 0)
}
// Return the SELinux label for this path
// Getfilecon returns the SELinux label for this path or returns an error.
func Getfilecon(path string) (string, error) {
con, err := system.Lgetxattr(path, xattrNameSelinux)
return string(con), err
@ -160,11 +167,12 @@ func Getfscreatecon() (string, error) {
return readCon(fmt.Sprintf("/proc/self/task/%d/attr/fscreate", system.Gettid()))
}
// Return the SELinux label of the current process thread.
// Getcon returns the SELinux label of the current process thread, or an error.
func Getcon() (string, error) {
return readCon(fmt.Sprintf("/proc/self/task/%d/attr/current", system.Gettid()))
}
// Getpidcon returns the SELinux label of the given pid, or an error.
func Getpidcon(pid int) (string, error) {
return readCon(fmt.Sprintf("/proc/%d/attr/current", pid))
}