From: Sangjung Woo <sangjung.woo@samsung.com>
Date: Tue, 8 Sep 2015 05:58:22 +0000 (+0900)
Subject: smack: introduce new mac_smack_copy() function
X-Git-Tag: v227.2^2~45
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=commitdiff_plain;h=e50b9bfa20b2f3aa0d29a956b1f9307f0e2a0db0

smack: introduce new mac_smack_copy() function

This adds a new mac_smack_copy() function in order to read the smack
label from the source and apply it to the destination.
---

diff --git a/src/basic/smack-util.c b/src/basic/smack-util.c
index 6d5c20511..9e221d6ea 100644
--- a/src/basic/smack-util.c
+++ b/src/basic/smack-util.c
@@ -185,6 +185,23 @@ int mac_smack_fix(const char *path, bool ignore_enoent, bool ignore_erofs) {
         return r;
 }
 
+int mac_smack_copy(const char *dest, const char *src) {
+        int r = 0;
+        _cleanup_free_ char *label = NULL;
+
+        assert(dest);
+        assert(src);
+
+        r = mac_smack_read(src, SMACK_ATTR_ACCESS, &label);
+        if (r < 0)
+                return r;
+
+        r = mac_smack_apply(dest, SMACK_ATTR_ACCESS, label);
+        if (r < 0)
+                return r;
+
+        return r;
+}
 
 #else
 bool mac_smack_use(void) {
@@ -214,4 +231,8 @@ int mac_smack_apply_pid(pid_t pid, const char *label) {
 int mac_smack_fix(const char *path, bool ignore_enoent, bool ignore_erofs) {
         return 0;
 }
+
+int mac_smack_copy(const char *dest, const char *src) {
+        return 0;
+}
 #endif
diff --git a/src/basic/smack-util.h b/src/basic/smack-util.h
index 1052cecf4..b3aa55eb8 100644
--- a/src/basic/smack-util.h
+++ b/src/basic/smack-util.h
@@ -48,5 +48,5 @@ int mac_smack_read(const char *path, SmackAttr attr, char **label);
 int mac_smack_read_fd(int fd, SmackAttr attr, char **label);
 int mac_smack_apply(const char *path, SmackAttr attr, const char *label);
 int mac_smack_apply_fd(int fd, SmackAttr attr, const char *label);
-
 int mac_smack_apply_pid(pid_t pid, const char *label);
+int mac_smack_copy(const char *dest, const char *src);