Merge branch 'debugfs_automount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs into trace/ftrace/tracefs

Pull in Al Viro's changes to debugfs that implement the new primitive:
debugfs_create_automount(), that creates a directory in debugfs that will
safely mount another file system automatically when debugfs is mounted.

This will let tracefs automount itself on top of debugfs/tracing directory.

1 files changed, 15 insertions, 8 deletions

diff --git a/tools/testing/selftests/exec/execveat.c b/tools/testing/selftests/exec/execveat.c
index 33a5c06d95ca..e238c9559caf 100644
--- a/tools/testing/selftests/exec/execveat.c
+++ b/tools/testing/selftests/exec/execveat.c
@@ -62,7 +62,7 @@ static int _check_execveat_fail(int fd, const char *path, int flags,
 }
 
 static int check_execveat_invoked_rc(int fd, const char *path, int flags,
-                                     int expected_rc)
+                                     int expected_rc, int expected_rc2)
 {
         int status;
         int rc;
@@ -98,9 +98,10 @@ static int check_execveat_invoked_rc(int fd, const char *path, int flags,
                         child, status);
                 return 1;
         }
-        if (WEXITSTATUS(status) != expected_rc) {
-                printf("[FAIL] (child %d exited with %d not %d)\n",
-                        child, WEXITSTATUS(status), expected_rc);
+        if ((WEXITSTATUS(status) != expected_rc) &&
+            (WEXITSTATUS(status) != expected_rc2)) {
+                printf("[FAIL] (child %d exited with %d not %d nor %d)\n",
+                        child, WEXITSTATUS(status), expected_rc, expected_rc2);
                 return 1;
         }
         printf("[OK]\n");
@@ -109,7 +110,7 @@ static int check_execveat_invoked_rc(int fd, const char *path, int flags,
 
 static int check_execveat(int fd, const char *path, int flags)
 {
-        return check_execveat_invoked_rc(fd, path, flags, 99);
+        return check_execveat_invoked_rc(fd, path, flags, 99, 99);
 }
 
 static char *concat(const char *left, const char *right)
@@ -179,11 +180,11 @@ static int check_execveat_pathmax(int dot_dfd, const char *src, int is_script)
          */
         fd = open(longpath, O_RDONLY);
         if (fd > 0) {
-                printf("Invoke copy of '%s' via filename of length %lu:\n",
+                printf("Invoke copy of '%s' via filename of length %zu:\n",
                         src, strlen(longpath));
                 fail += check_execveat(fd, "", AT_EMPTY_PATH);
         } else {
-                printf("Failed to open length %lu filename, errno=%d (%s)\n",
+                printf("Failed to open length %zu filename, errno=%d (%s)\n",
                         strlen(longpath), errno, strerror(errno));
                 fail++;
         }
@@ -192,9 +193,15 @@ static int check_execveat_pathmax(int dot_dfd, const char *src, int is_script)
          * Execute as a long pathname relative to ".".  If this is a script,
          * the interpreter will launch but fail to open the script because its
          * name ("/dev/fd/5/xxx....") is bigger than PATH_MAX.
+         *
+         * The failure code is usually 127 (POSIX: "If a command is not found,
+         * the exit status shall be 127."), but some systems give 126 (POSIX:
+         * "If the command name is found, but it is not an executable utility,
+         * the exit status shall be 126."), so allow either.
          */
         if (is_script)
-                fail += check_execveat_invoked_rc(dot_dfd, longpath, 0, 127);
+                fail += check_execveat_invoked_rc(dot_dfd, longpath, 0,
+                                                  127, 126);
         else
                 fail += check_execveat(dot_dfd, longpath, 0);