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@@ -2,15 +2,10 @@
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package apparmor
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package apparmor
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-// #cgo LDFLAGS: -lapparmor
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-// #include <sys/apparmor.h>
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-// #include <stdlib.h>
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-import "C"
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import (
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import (
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"fmt"
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"fmt"
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"io/ioutil"
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"io/ioutil"
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"os"
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"os"
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- "unsafe"
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)
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)
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// IsEnabled returns true if apparmor is enabled for the host.
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// IsEnabled returns true if apparmor is enabled for the host.
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@@ -24,16 +19,36 @@ func IsEnabled() bool {
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return false
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return false
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}
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}
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+func setprocattr(attr, value string) error {
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+ // Under AppArmor you can only change your own attr, so use /proc/self/
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+ // instead of /proc/<tid>/ like libapparmor does
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+ path := fmt.Sprintf("/proc/self/attr/%s", attr)
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+
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+ f, err := os.OpenFile(path, os.O_WRONLY, 0)
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+ if err != nil {
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+ return err
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+ }
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+ defer f.Close()
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+
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+ _, err = fmt.Fprintf(f, "%s", value)
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+ return err
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+}
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+
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+// changeOnExec reimplements aa_change_onexec from libapparmor in Go
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+func changeOnExec(name string) error {
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+ value := "exec " + name
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+ if err := setprocattr("exec", value); err != nil {
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+ return fmt.Errorf("apparmor failed to apply profile: %s", err)
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+ }
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+ return nil
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+}
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+
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// ApplyProfile will apply the profile with the specified name to the process after
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// ApplyProfile will apply the profile with the specified name to the process after
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// the next exec.
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// the next exec.
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func ApplyProfile(name string) error {
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func ApplyProfile(name string) error {
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if name == "" {
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if name == "" {
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return nil
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return nil
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}
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}
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- cName := C.CString(name)
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- defer C.free(unsafe.Pointer(cName))
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- if _, err := C.aa_change_onexec(cName); err != nil {
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- return fmt.Errorf("apparmor failed to apply profile: %s", err)
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- }
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- return nil
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+
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+ return changeOnExec(name)
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}
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}
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