log: chown pidfile to current criu user

If criu run with suid bit set, user should be able
to read pidfiles(i.e. service pidfile).

Signed-off-by: Ruslan Kuprieiev <kupruser@gmail.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/log.c b/log.c
index c6e64da9a..0a5eb58b1 100644
--- a/log.c
+++ b/log.c
@@ -17,6 +17,7 @@
 #include "util.h"
 #include "cr_options.h"
 #include "servicefd.h"
+#include "security.h"
 
 #define DEFAULT_LOGFD		STDERR_FILENO
 /* Enable timestamps if verbosity is increased from default */
@@ -191,6 +192,12 @@ int write_pidfile(int pid)
 		return -1;
 	}
 
+	if (cr_fchown(fd)) {
+		pr_perror("Can't chown pidfile %s", opts.pidfile);
+		close(fd);
+		return -1;
+	}
+
 	dprintf(fd, "%d", pid);
 	close(fd);
 	return 0;