X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=src%2Fcommon%2Frunas.c;h=ddb2f18bf62c34f3508dfbae8c0a1d080dec4c69;hb=a5ae566aaff1a5f9cb85cb2dadd520ab8be9a214;hp=bee107951d8664e6f111ed5ff260574407f0c3a3;hpb=a440509044c2828bf6dbfb05e8d9d6d0277ce1a4;p=lttng-tools.git

diff --git a/src/common/runas.c b/src/common/runas.c
index bee107951..ddb2f18bf 100644
--- a/src/common/runas.c
+++ b/src/common/runas.c
@@ -42,6 +42,14 @@
 #define MAP_STACK		0
 #endif
 
+#ifndef MAP_GROWSDOWN
+#define GROWSDOWN		0
+#endif
+
+#ifndef MAP_ANONYMOUS
+#define MAP_ANONYMOUS		MAP_ANON
+#endif
+
 struct run_as_data {
 	int (*cmd)(void *data);
 	void *data;
@@ -217,6 +225,7 @@ int run_as(int (*cmd)(void *data), void *data, uid_t uid, gid_t gid)
 	ret = pipe(retval_pipe);
 	if (ret < 0) {
 		perror("pipe");
+		retval.i = ret;
 		goto end;
 	}
 	run_as_data.data = data;
@@ -230,19 +239,18 @@ int run_as(int (*cmd)(void *data), void *data, uid_t uid, gid_t gid)
 		-1, 0);
 	if (child_stack == MAP_FAILED) {
 		perror("mmap");
-		ret = -ENOMEM;
+		retval.i = -ENOMEM;
 		goto close_pipe;
 	}
 	/*
 	 * Pointing to the middle of the stack to support architectures
 	 * where the stack grows up (HPPA).
 	 */
-	pid = clone(child_run_as, child_stack + (RUNAS_CHILD_STACK_SIZE / 2),
-		CLONE_FILES | SIGCHLD,
-		&run_as_data, NULL);
+	pid = lttng_clone_files(child_run_as, child_stack + (RUNAS_CHILD_STACK_SIZE / 2),
+		&run_as_data);
 	if (pid < 0) {
 		perror("clone");
-		ret = pid;
+		retval.i = pid;
 		goto unmap_stack;
 	}
 	/* receive return value */
@@ -266,12 +274,13 @@ int run_as(int (*cmd)(void *data), void *data, uid_t uid, gid_t gid)
 	pid = waitpid(pid, &status, 0);
 	if (pid < 0 || !WIFEXITED(status) || WEXITSTATUS(status) != 0) {
 		perror("wait");
-		ret = -1;
+		retval.i = -1;
 	}
 unmap_stack:
 	ret = munmap(child_stack, RUNAS_CHILD_STACK_SIZE);
 	if (ret < 0) {
 		perror("munmap");
+		retval.i = ret;
 	}
 close_pipe:
 	close(retval_pipe[0]);