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authorWaLyong Cho <walyong.cho@samsung.com>2014-11-24 20:46:20 +0900
committerAnthony G. Basile <blueness@gentoo.org>2014-11-27 12:34:36 -0500
commit70a41ab58555569149041e95159862d5e6367b39 (patch)
tree68a11b9d9db2a4a2bfd6e02ffe62634a76aeeb7b /src/shared/smack-util.c
parent2694f4de06f68376251138515c96a684650f0f6a (diff)
smack: introduce new SmackProcessLabel option
In service file, if the file has some of special SMACK label in ExecStart= and systemd has no permission for the special SMACK label then permission error will occurred. To resolve this, systemd should be able to set its SMACK label to something accessible of ExecStart=. So introduce new SmackProcessLabel. If label is specified with SmackProcessLabel= then the child systemd will set its label to that. To successfully execute the ExecStart=, accessible label should be specified with SmackProcessLabel=. Additionally, by SMACK policy, if the file in ExecStart= has no SMACK64EXEC then the executed process will have given label by SmackProcessLabel=. But if the file has SMACK64EXEC then the SMACK64EXEC label will be overridden. [zj: reword man page] Signed-off-by: Anthony G. Basile <blueness@gentoo.org>
Diffstat (limited to 'src/shared/smack-util.c')
-rw-r--r--src/shared/smack-util.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/src/shared/smack-util.c b/src/shared/smack-util.c
index 407a8e1aa3..992a2e3372 100644
--- a/src/shared/smack-util.c
+++ b/src/shared/smack-util.c
@@ -25,6 +25,7 @@
#include "util.h"
#include "path-util.h"
+#include "fileio.h"
#include "smack-util.h"
#define SMACK_FLOOR_LABEL "_"
@@ -123,6 +124,25 @@ int mac_smack_apply_ip_in_fd(int fd, const char *label) {
return r;
}
+int mac_smack_apply_pid(pid_t pid, const char *label) {
+ int r = 0;
+ const char *p;
+
+ assert(label);
+
+#ifdef HAVE_SMACK
+ if (!mac_smack_use())
+ return 0;
+
+ p = procfs_file_alloca(pid, "attr/current");
+ r = write_string_file(p, label);
+ if (r < 0)
+ return r;
+#endif
+
+ return r;
+}
+
int mac_smack_fix(const char *path, bool ignore_enoent, bool ignore_erofs) {
int r = 0;