tree-wide: stop using canonicalize_file_name(), use chase_symlinks() instead

Let's use chase_symlinks() everywhere, and stop using GNU
canonicalize_file_name() everywhere. For most cases this should not change
behaviour, however increase exposure of our function to get better tested. Most
importantly in a few cases (most notably nspawn) it can take the correct root
directory into account when chasing symlinks.

21 files changed, 135 insertions, 117 deletions

diff --git a/src/basic/fs-util.c b/src/basic/fs-util.c
index d2c322a0de..dede7cd224 100644
--- a/src/basic/fs-util.c
+++ b/src/basic/fs-util.c
@@ -224,25 +224,25 @@ int readlink_and_make_absolute(const char *p, char **r) {
         return 0;
 }
 
-int readlink_and_canonicalize(const char *p, char **r) {
+int readlink_and_canonicalize(const char *p, const char *root, char **ret) {
         char *t, *s;
-        int j;
+        int r;
 
         assert(p);
-        assert(r);
+        assert(ret);
 
-        j = readlink_and_make_absolute(p, &t);
-        if (j < 0)
-                return j;
+        r = readlink_and_make_absolute(p, &t);
+        if (r < 0)
+                return r;
 
-        s = canonicalize_file_name(t);
-        if (s) {
+        r = chase_symlinks(t, root, &s);
+        if (r < 0)
+                /* If we can't follow up, then let's return the original string, slightly cleaned up. */
+                *ret = path_kill_slashes(t);
+        else {
+                *ret = s;
                 free(t);
-                *r = s;
-        } else
-                *r = t;
-
-        path_kill_slashes(*r);
+        }
 
         return 0;
 }
diff --git a/src/basic/fs-util.h b/src/basic/fs-util.h
index 31df47cf1e..01c3301d71 100644
--- a/src/basic/fs-util.h
+++ b/src/basic/fs-util.h
@@ -39,7 +39,7 @@ int readlinkat_malloc(int fd, const char *p, char **ret);
 int readlink_malloc(const char *p, char **r);
 int readlink_value(const char *p, char **ret);
 int readlink_and_make_absolute(const char *p, char **r);
-int readlink_and_canonicalize(const char *p, char **r);
+int readlink_and_canonicalize(const char *p, const char *root, char **r);
 int readlink_and_make_absolute_root(const char *root, const char *path, char **ret);
 
 int chmod_and_chown(const char *path, mode_t mode, uid_t uid, gid_t gid);
diff --git a/src/basic/mount-util.c b/src/basic/mount-util.c
index 5d37fb48be..4a72d4700a 100644
--- a/src/basic/mount-util.c
+++ b/src/basic/mount-util.c
@@ -29,6 +29,7 @@
 #include "escape.h"
 #include "fd-util.h"
 #include "fileio.h"
+#include "fs-util.h"
 #include "hashmap.h"
 #include "mount-util.h"
 #include "parse-util.h"
@@ -205,9 +206,10 @@ fallback_fstat:
 }
 
 /* flags can be AT_SYMLINK_FOLLOW or 0 */
-int path_is_mount_point(const char *t, int flags) {
-        _cleanup_close_ int fd = -1;
+int path_is_mount_point(const char *t, const char *root, int flags) {
         _cleanup_free_ char *canonical = NULL, *parent = NULL;
+        _cleanup_close_ int fd = -1;
+        int r;
 
         assert(t);
 
@@ -219,9 +221,9 @@ int path_is_mount_point(const char *t, int flags) {
          * /bin -> /usr/bin/ and /usr is a mount point, then the parent that we
          * look at needs to be /usr, not /. */
         if (flags & AT_SYMLINK_FOLLOW) {
-                canonical = canonicalize_file_name(t);
-                if (!canonical)
-                        return -errno;
+                r = chase_symlinks(t, root, &canonical);
+                if (r < 0)
+                        return r;
 
                 t = canonical;
         }
@@ -473,7 +475,7 @@ int bind_remount_recursive(const char *prefix, bool ro, char **blacklist) {
                                 return r;
 
                         /* Deal with mount points that are obstructed by a later mount */
-                        r = path_is_mount_point(x, 0);
+                        r = path_is_mount_point(x, NULL, 0);
                         if (r == -ENOENT || r == 0)
                                 continue;
                         if (r < 0)
diff --git a/src/basic/mount-util.h b/src/basic/mount-util.h
index 4f305df19f..b840956d63 100644
--- a/src/basic/mount-util.h
+++ b/src/basic/mount-util.h
@@ -30,7 +30,7 @@
 #include "missing.h"
 
 int fd_is_mount_point(int fd, const char *filename, int flags);
-int path_is_mount_point(const char *path, int flags);
+int path_is_mount_point(const char *path, const char *root, int flags);
 
 int repeat_unmount(const char *path, int flags);
 
diff --git a/src/basic/path-util.c b/src/basic/path-util.c
index 5cdac50c68..475a73d292 100644
--- a/src/basic/path-util.c
+++ b/src/basic/path-util.c
@@ -220,10 +220,11 @@ int path_strv_make_absolute_cwd(char **l) {
         return 0;
 }
 
-char **path_strv_resolve(char **l, const char *prefix) {
+char **path_strv_resolve(char **l, const char *root) {
         char **s;
         unsigned k = 0;
         bool enomem = false;
+        int r;
 
         if (strv_isempty(l))
                 return l;
@@ -233,17 +234,17 @@ char **path_strv_resolve(char **l, const char *prefix) {
          * changes on failure. */
 
         STRV_FOREACH(s, l) {
-                char *t, *u;
                 _cleanup_free_ char *orig = NULL;
+                char *t, *u;
 
                 if (!path_is_absolute(*s)) {
                         free(*s);
                         continue;
                 }
 
-                if (prefix) {
+                if (root) {
                         orig = *s;
-                        t = strappend(prefix, orig);
+                        t = prefix_root(root, orig);
                         if (!t) {
                                 enomem = true;
                                 continue;
@@ -251,28 +252,26 @@ char **path_strv_resolve(char **l, const char *prefix) {
                 } else
                         t = *s;
 
-                errno = 0;
-                u = canonicalize_file_name(t);
-                if (!u) {
-                        if (errno == ENOENT) {
-                                if (prefix) {
-                                        u = orig;
-                                        orig = NULL;
-                                        free(t);
-                                } else
-                                        u = t;
-                        } else {
+                r = chase_symlinks(t, root, &u);
+                if (r == -ENOENT) {
+                        if (root) {
+                                u = orig;
+                                orig = NULL;
                                 free(t);
-                                if (errno == ENOMEM || errno == 0)
-                                        enomem = true;
+                        } else
+                                u = t;
+                } else if (r < 0) {
+                        free(t);
 
-                                continue;
-                        }
-                } else if (prefix) {
+                        if (r == -ENOMEM)
+                                enomem = true;
+
+                        continue;
+                } else if (root) {
                         char *x;
 
                         free(t);
-                        x = path_startswith(u, prefix);
+                        x = path_startswith(u, root);
                         if (x) {
                                 /* restore the slash if it was lost */
                                 if (!startswith(x, "/"))
@@ -304,12 +303,12 @@ char **path_strv_resolve(char **l, const char *prefix) {
         return l;
 }
 
-char **path_strv_resolve_uniq(char **l, const char *prefix) {
+char **path_strv_resolve_uniq(char **l, const char *root) {
 
         if (strv_isempty(l))
                 return l;
 
-        if (!path_strv_resolve(l, prefix))
+        if (!path_strv_resolve(l, root))
                 return NULL;
 
         return strv_uniq(l);
diff --git a/src/basic/path-util.h b/src/basic/path-util.h
index 66545f52d9..d2bc0d3b8e 100644
--- a/src/basic/path-util.h
+++ b/src/basic/path-util.h
@@ -66,8 +66,8 @@ static inline bool path_equal_ptr(const char *a, const char *b) {
         })
 
 int path_strv_make_absolute_cwd(char **l);
-char** path_strv_resolve(char **l, const char *prefix);
-char** path_strv_resolve_uniq(char **l, const char *prefix);
+char** path_strv_resolve(char **l, const char *root);
+char** path_strv_resolve_uniq(char **l, const char *root);
 
 int find_binary(const char *name, char **filename);
 
diff --git a/src/core/automount.c b/src/core/automount.c
index 5fa6eb7b18..8ff1ca90f7 100644
--- a/src/core/automount.c
+++ b/src/core/automount.c
@@ -783,7 +783,7 @@ static int automount_start(Unit *u) {
         assert(a);
         assert(a->state == AUTOMOUNT_DEAD || a->state == AUTOMOUNT_FAILED);
 
-        if (path_is_mount_point(a->where, 0) > 0) {
+        if (path_is_mount_point(a->where, NULL, 0) > 0) {
                 log_unit_error(u, "Path %s is already a mount point, refusing start.", a->where);
                 return -EEXIST;
         }
diff --git a/src/core/machine-id-setup.c b/src/core/machine-id-setup.c
index 76dfcfa6d7..c83bb561c7 100644
--- a/src/core/machine-id-setup.c
+++ b/src/core/machine-id-setup.c
@@ -199,7 +199,7 @@ int machine_id_commit(const char *root) {
 
         etc_machine_id = prefix_roota(root, "/etc/machine-id");
 
-        r = path_is_mount_point(etc_machine_id, 0);
+        r = path_is_mount_point(etc_machine_id, NULL, 0);
         if (r < 0)
                 return log_error_errno(r, "Failed to determine whether %s is a mount point: %m", etc_machine_id);
         if (r == 0) {
diff --git a/src/core/mount-setup.c b/src/core/mount-setup.c
index ca63a93e8b..6338067d7e 100644
--- a/src/core/mount-setup.c
+++ b/src/core/mount-setup.c
@@ -159,7 +159,7 @@ static int mount_one(const MountPoint *p, bool relabel) {
         if (relabel)
                 (void) label_fix(p->where, true, true);
 
-        r = path_is_mount_point(p->where, AT_SYMLINK_FOLLOW);
+        r = path_is_mount_point(p->where, NULL, AT_SYMLINK_FOLLOW);
         if (r < 0 && r != -ENOENT) {
                 log_full_errno((p->mode & MNT_FATAL) ? LOG_ERR : LOG_DEBUG, r, "Failed to determine whether %s is a mount point: %m", p->where);
                 return (p->mode & MNT_FATAL) ? r : 0;
diff --git a/src/core/namespace.c b/src/core/namespace.c
index e9ad26bfc3..9954b9e97d 100644
--- a/src/core/namespace.c
+++ b/src/core/namespace.c
@@ -596,7 +596,7 @@ static int apply_mount(
         case READONLY:
         case READWRITE:
 
-                r = path_is_mount_point(bind_mount_path(m), 0);
+                r = path_is_mount_point(bind_mount_path(m), NULL, 0);
                 if (r < 0)
                         return log_debug_errno(r, "Failed to determine whether %s is already a mount point: %m", bind_mount_path(m));
                 if (r > 0) /* Nothing to do here, it is already a mount. We just later toggle the MS_RDONLY bit for the mount point if needed. */
@@ -860,7 +860,7 @@ int setup_namespace(
 
         if (root_directory) {
                 /* Turn directory into bind mount, if it isn't one yet */
-                r = path_is_mount_point(root_directory, AT_SYMLINK_FOLLOW);
+                r = path_is_mount_point(root_directory, NULL, AT_SYMLINK_FOLLOW);
                 if (r < 0)
                         goto finish;
                 if (r == 0) {
diff --git a/src/delta/delta.c b/src/delta/delta.c
index 04de75475d..70ff793304 100644
--- a/src/delta/delta.c
+++ b/src/delta/delta.c
@@ -87,14 +87,15 @@ static enum {
 
 static int equivalent(const char *a, const char *b) {
         _cleanup_free_ char *x = NULL, *y = NULL;
+        int r;
 
-        x = canonicalize_file_name(a);
-        if (!x)
-                return -errno;
+        r = chase_symlinks(a, NULL, &x);
+        if (r < 0)
+                return r;
 
-        y = canonicalize_file_name(b);
-        if (!y)
-                return -errno;
+        r = chase_symlinks(b, NULL, &y);
+        if (r < 0)
+                return r;
 
         return path_equal(x, y);
 }
diff --git a/src/gpt-auto-generator/gpt-auto-generator.c b/src/gpt-auto-generator/gpt-auto-generator.c
index 52cde493e5..0f95f0d813 100644
--- a/src/gpt-auto-generator/gpt-auto-generator.c
+++ b/src/gpt-auto-generator/gpt-auto-generator.c
@@ -252,7 +252,7 @@ static bool path_is_busy(const char *where) {
         int r;
 
         /* already a mountpoint; generators run during reload */
-        r = path_is_mount_point(where, AT_SYMLINK_FOLLOW);
+        r = path_is_mount_point(where, NULL, AT_SYMLINK_FOLLOW);
         if (r > 0)
                 return false;
 
diff --git a/src/journal/journalctl.c b/src/journal/journalctl.c
index 22cab67824..d0d4524c9f 100644
--- a/src/journal/journalctl.c
+++ b/src/journal/journalctl.c
@@ -938,21 +938,21 @@ static int add_matches(sd_journal *j, char **args) {
                         have_term = false;
 
                 } else if (path_is_absolute(*i)) {
-                        _cleanup_free_ char *p, *t = NULL, *t2 = NULL, *interpreter = NULL;
-                        const char *path;
+                        _cleanup_free_ char *p = NULL, *t = NULL, *t2 = NULL, *interpreter = NULL;
                         struct stat st;
 
-                        p = canonicalize_file_name(*i);
-                        path = p ?: *i;
+                        r = chase_symlinks(*i, NULL, &p);
+                        if (r < 0)
+                                return log_error_errno(r, "Couldn't canonicalize path: %m");
 
-                        if (lstat(path, &st) < 0)
+                        if (lstat(p, &st) < 0)
                                 return log_error_errno(errno, "Couldn't stat file: %m");
 
                         if (S_ISREG(st.st_mode) && (0111 & st.st_mode)) {
-                                if (executable_is_script(path, &interpreter) > 0) {
+                                if (executable_is_script(p, &interpreter) > 0) {
                                         _cleanup_free_ char *comm;
 
-                                        comm = strndup(basename(path), 15);
+                                        comm = strndup(basename(p), 15);
                                         if (!comm)
                                                 return log_oom();
 
@@ -968,7 +968,7 @@ static int add_matches(sd_journal *j, char **args) {
                                                         return log_oom();
                                         }
                                 } else {
-                                        t = strappend("_EXE=", path);
+                                        t = strappend("_EXE=", p);
                                         if (!t)
                                                 return log_oom();
                                 }
@@ -979,7 +979,7 @@ static int add_matches(sd_journal *j, char **args) {
                                         r = sd_journal_add_match(j, t2, 0);
 
                         } else if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode)) {
-                                r = add_matches_for_device(j, path);
+                                r = add_matches_for_device(j, p);
                                 if (r < 0)
                                         return r;
                         } else {
diff --git a/src/libsystemd/sd-device/sd-device.c b/src/libsystemd/sd-device/sd-device.c
index 411453e08d..1081979bf9 100644
--- a/src/libsystemd/sd-device/sd-device.c
+++ b/src/libsystemd/sd-device/sd-device.c
@@ -164,7 +164,7 @@ int device_set_syspath(sd_device *device, const char *_syspath, bool verify) {
         }
 
         if (verify) {
-                r = readlink_and_canonicalize(_syspath, &syspath);
+                r = readlink_and_canonicalize(_syspath, NULL, &syspath);
                 if (r == -ENOENT)
                         /* the device does not exist (any more?) */
                         return -ENODEV;
diff --git a/src/login/logind-user.c b/src/login/logind-user.c
index 0d1417ea16..888a97c2fc 100644
--- a/src/login/logind-user.c
+++ b/src/login/logind-user.c
@@ -338,7 +338,7 @@ static int user_mkdir_runtime_path(User *u) {
         if (r < 0)
                 return log_error_errno(r, "Failed to create /run/user: %m");
 
-        if (path_is_mount_point(u->runtime_path, 0) <= 0) {
+        if (path_is_mount_point(u->runtime_path, NULL, 0) <= 0) {
                 _cleanup_free_ char *t = NULL;
 
                 (void) mkdir_label(u->runtime_path, 0700);
diff --git a/src/nspawn/nspawn-mount.c b/src/nspawn/nspawn-mount.c
index 91cb0861d3..d72b0a0b9b 100644
--- a/src/nspawn/nspawn-mount.c
+++ b/src/nspawn/nspawn-mount.c
@@ -418,7 +418,7 @@ int mount_all(const char *dest,
                 if (!where)
                         return log_oom();
 
-                r = path_is_mount_point(where, AT_SYMLINK_FOLLOW);
+                r = path_is_mount_point(where, dest, AT_SYMLINK_FOLLOW);
                 if (r < 0 && r != -ENOENT)
                         return log_error_errno(r, "Failed to detect whether %s is a mount point: %m", where);
 
@@ -726,14 +726,19 @@ static int get_controllers(Set *subsystems) {
         return 0;
 }
 
-static int mount_legacy_cgroup_hierarchy(const char *dest, const char *controller, const char *hierarchy,
-                                         CGroupUnified unified_requested, bool read_only) {
+static int mount_legacy_cgroup_hierarchy(
+                const char *dest,
+                const char *controller,
+                const char *hierarchy,
+                CGroupUnified unified_requested,
+                bool read_only) {
+
         const char *to, *fstype, *opts;
         int r;
 
         to = strjoina(strempty(dest), "/sys/fs/cgroup/", hierarchy);
 
-        r = path_is_mount_point(to, 0);
+        r = path_is_mount_point(to, dest, 0);
         if (r < 0 && r != -ENOENT)
                 return log_error_errno(r, "Failed to determine if %s is mounted already: %m", to);
         if (r > 0)
@@ -773,8 +778,13 @@ static int mount_legacy_cgroup_hierarchy(const char *dest, const char *controlle
 
 /* Mount a legacy cgroup hierarchy when cgroup namespaces are supported. */
 static int mount_legacy_cgns_supported(
-                CGroupUnified unified_requested, bool userns, uid_t uid_shift,
-                uid_t uid_range, const char *selinux_apifs_context) {
+                const char *dest,
+                CGroupUnified unified_requested,
+                bool userns,
+                uid_t uid_shift,
+                uid_t uid_range,
+                const char *selinux_apifs_context) {
+
         _cleanup_set_free_free_ Set *controllers = NULL;
         const char *cgroup_root = "/sys/fs/cgroup", *c;
         int r;
@@ -782,7 +792,7 @@ static int mount_legacy_cgns_supported(
         (void) mkdir_p(cgroup_root, 0755);
 
         /* Mount a tmpfs to /sys/fs/cgroup if it's not mounted there yet. */
-        r = path_is_mount_point(cgroup_root, AT_SYMLINK_FOLLOW);
+        r = path_is_mount_point(cgroup_root, dest, AT_SYMLINK_FOLLOW);
         if (r < 0)
                 return log_error_errno(r, "Failed to determine if /sys/fs/cgroup is already mounted: %m");
         if (r == 0) {
@@ -871,8 +881,12 @@ skip_controllers:
 /* Mount legacy cgroup hierarchy when cgroup namespaces are unsupported. */
 static int mount_legacy_cgns_unsupported(
                 const char *dest,
-                CGroupUnified unified_requested, bool userns, uid_t uid_shift, uid_t uid_range,
+                CGroupUnified unified_requested,
+                bool userns,
+                uid_t uid_shift,
+                uid_t uid_range,
                 const char *selinux_apifs_context) {
+
         _cleanup_set_free_free_ Set *controllers = NULL;
         const char *cgroup_root;
         int r;
@@ -882,7 +896,7 @@ static int mount_legacy_cgns_unsupported(
         (void) mkdir_p(cgroup_root, 0755);
 
         /* Mount a tmpfs to /sys/fs/cgroup if it's not mounted there yet. */
-        r = path_is_mount_point(cgroup_root, AT_SYMLINK_FOLLOW);
+        r = path_is_mount_point(cgroup_root, dest, AT_SYMLINK_FOLLOW);
         if (r < 0)
                 return log_error_errno(r, "Failed to determine if /sys/fs/cgroup is already mounted: %m");
         if (r == 0) {
@@ -975,7 +989,7 @@ static int mount_unified_cgroups(const char *dest) {
 
         (void) mkdir_p(p, 0755);
 
-        r = path_is_mount_point(p, AT_SYMLINK_FOLLOW);
+        r = path_is_mount_point(p, dest, AT_SYMLINK_FOLLOW);
         if (r < 0)
                 return log_error_errno(r, "Failed to determine if %s is mounted already: %m", p);
         if (r > 0) {
@@ -995,14 +1009,16 @@ static int mount_unified_cgroups(const char *dest) {
 int mount_cgroups(
                 const char *dest,
                 CGroupUnified unified_requested,
-                bool userns, uid_t uid_shift, uid_t uid_range,
+                bool userns,
+                uid_t uid_shift,
+                uid_t uid_range,
                 const char *selinux_apifs_context,
                 bool use_cgns) {
 
         if (unified_requested >= CGROUP_UNIFIED_ALL)
                 return mount_unified_cgroups(dest);
         else if (use_cgns)
-                return mount_legacy_cgns_supported(unified_requested, userns, uid_shift, uid_range, selinux_apifs_context);
+                return mount_legacy_cgns_supported(dest, unified_requested, userns, uid_shift, uid_range, selinux_apifs_context);
 
         return mount_legacy_cgns_unsupported(dest, unified_requested, userns, uid_shift, uid_range, selinux_apifs_context);
 }
diff --git a/src/nspawn/nspawn.c b/src/nspawn/nspawn.c
index 2770770cd0..77b6be95e2 100644
--- a/src/nspawn/nspawn.c
+++ b/src/nspawn/nspawn.c
@@ -1666,7 +1666,7 @@ static int setup_journal(const char *directory) {
         p = strjoina("/var/log/journal/", id);
         q = prefix_roota(directory, p);
 
-        if (path_is_mount_point(p, 0) > 0) {
+        if (path_is_mount_point(p, NULL, 0) > 0) {
                 if (try)
                         return 0;
 
@@ -1674,7 +1674,7 @@ static int setup_journal(const char *directory) {
                 return -EEXIST;
         }
 
-        if (path_is_mount_point(q, 0) > 0) {
+        if (path_is_mount_point(q, NULL, 0) > 0) {
                 if (try)
                         return 0;
 
@@ -4132,7 +4132,7 @@ int main(int argc, char *argv[]) {
                          * the specified is not a mount point we
                          * create the new snapshot in the parent
                          * directory, just next to it. */
-                        r = path_is_mount_point(arg_directory, 0);
+                        r = path_is_mount_point(arg_directory, NULL, 0);
                         if (r < 0) {
                                 log_error_errno(r, "Failed to determine whether directory %s is mount point: %m", arg_directory);
                                 goto finish;
diff --git a/src/shared/condition.c b/src/shared/condition.c
index 525e65aedf..0b77d2c22d 100644
--- a/src/shared/condition.c
+++ b/src/shared/condition.c
@@ -399,7 +399,7 @@ static int condition_test_path_is_mount_point(Condition *c) {
         assert(c->parameter);
         assert(c->type == CONDITION_PATH_IS_MOUNT_POINT);
 
-        return path_is_mount_point(c->parameter, AT_SYMLINK_FOLLOW) > 0;
+        return path_is_mount_point(c->parameter, NULL, AT_SYMLINK_FOLLOW) > 0;
 }
 
 static int condition_test_path_is_read_write(Condition *c) {
diff --git a/src/shared/machine-pool.c b/src/shared/machine-pool.c
index 23890c63a0..c581bdeb79 100644
--- a/src/shared/machine-pool.c
+++ b/src/shared/machine-pool.c
@@ -225,7 +225,7 @@ int setup_machine_directory(uint64_t size, sd_bus_error *error) {
                 return 1;
         }
 
-        if (path_is_mount_point("/var/lib/machines", AT_SYMLINK_FOLLOW) > 0) {
+        if (path_is_mount_point("/var/lib/machines", NULL, AT_SYMLINK_FOLLOW) > 0) {
                 log_debug("/var/lib/machines is already a mount point, not creating loopback file for it.");
                 return 0;
         }
diff --git a/src/test/test-copy.c b/src/test/test-copy.c
index 91d2a0bcd4..e65516f080 100644
--- a/src/test/test-copy.c
+++ b/src/test/test-copy.c
@@ -144,7 +144,7 @@ static void test_copy_tree(void) {
                 assert_se((f = strjoin(original_dir, *p)));
                 assert_se((l = strjoin(copy_dir, *link)));
 
-                assert_se(readlink_and_canonicalize(l, &target) == 0);
+                assert_se(readlink_and_canonicalize(l, NULL, &target) == 0);
                 assert_se(path_equal(f, target));
         }
 
diff --git a/src/test/test-path-util.c b/src/test/test-path-util.c
index a6a09a0031..22df20a1eb 100644
--- a/src/test/test-path-util.c
+++ b/src/test/test-path-util.c
@@ -337,17 +337,17 @@ static void test_path_is_mount_point(void) {
         _cleanup_free_ char *dir1 = NULL, *dir1file = NULL, *dirlink1 = NULL, *dirlink1file = NULL;
         _cleanup_free_ char *dir2 = NULL, *dir2file = NULL;
 
-        assert_se(path_is_mount_point("/", AT_SYMLINK_FOLLOW) > 0);
-        assert_se(path_is_mount_point("/", 0) > 0);
+        assert_se(path_is_mount_point("/", NULL, AT_SYMLINK_FOLLOW) > 0);
+        assert_se(path_is_mount_point("/", NULL, 0) > 0);
 
-        assert_se(path_is_mount_point("/proc", AT_SYMLINK_FOLLOW) > 0);
-        assert_se(path_is_mount_point("/proc", 0) > 0);
+        assert_se(path_is_mount_point("/proc", NULL, AT_SYMLINK_FOLLOW) > 0);
+        assert_se(path_is_mount_point("/proc", NULL, 0) > 0);
 
-        assert_se(path_is_mount_point("/proc/1", AT_SYMLINK_FOLLOW) == 0);
-        assert_se(path_is_mount_point("/proc/1", 0) == 0);
+        assert_se(path_is_mount_point("/proc/1", NULL, AT_SYMLINK_FOLLOW) == 0);
+        assert_se(path_is_mount_point("/proc/1", NULL, 0) == 0);
 
-        assert_se(path_is_mount_point("/sys", AT_SYMLINK_FOLLOW) > 0);
-        assert_se(path_is_mount_point("/sys", 0) > 0);
+        assert_se(path_is_mount_point("/sys", NULL, AT_SYMLINK_FOLLOW) > 0);
+        assert_se(path_is_mount_point("/sys", NULL, 0) > 0);
 
         /* we'll create a hierarchy of different kinds of dir/file/link
          * layouts:
@@ -381,10 +381,10 @@ static void test_path_is_mount_point(void) {
         assert_se(link1);
         assert_se(symlink("file2", link2) == 0);
 
-        assert_se(path_is_mount_point(file1, AT_SYMLINK_FOLLOW) == 0);
-        assert_se(path_is_mount_point(file1, 0) == 0);
-        assert_se(path_is_mount_point(link1, AT_SYMLINK_FOLLOW) == 0);
-        assert_se(path_is_mount_point(link1, 0) == 0);
+        assert_se(path_is_mount_point(file1, NULL, AT_SYMLINK_FOLLOW) == 0);
+        assert_se(path_is_mount_point(file1, NULL, 0) == 0);
+        assert_se(path_is_mount_point(link1, NULL, AT_SYMLINK_FOLLOW) == 0);
+        assert_se(path_is_mount_point(link1, NULL, 0) == 0);
 
         /* directory mountpoints */
         dir1 = path_join(NULL, tmp_dir, "dir1");
@@ -400,10 +400,10 @@ static void test_path_is_mount_point(void) {
         assert_se(dir2);
         assert_se(mkdir(dir2, 0755) == 0);
 
-        assert_se(path_is_mount_point(dir1, AT_SYMLINK_FOLLOW) == 0);
-        assert_se(path_is_mount_point(dir1, 0) == 0);
-        assert_se(path_is_mount_point(dirlink1, AT_SYMLINK_FOLLOW) == 0);
-        assert_se(path_is_mount_point(dirlink1, 0) == 0);
+        assert_se(path_is_mount_point(dir1, NULL, AT_SYMLINK_FOLLOW) == 0);
+        assert_se(path_is_mount_point(dir1, NULL, 0) == 0);
+        assert_se(path_is_mount_point(dirlink1, NULL, AT_SYMLINK_FOLLOW) == 0);
+        assert_se(path_is_mount_point(dirlink1, NULL, 0) == 0);
 
         /* file in subdirectory mountpoints */
         dir1file = path_join(NULL, dir1, "file");
@@ -412,10 +412,10 @@ static void test_path_is_mount_point(void) {
         assert_se(fd > 0);
         close(fd);
 
-        assert_se(path_is_mount_point(dir1file, AT_SYMLINK_FOLLOW) == 0);
-        assert_se(path_is_mount_point(dir1file, 0) == 0);
-        assert_se(path_is_mount_point(dirlink1file, AT_SYMLINK_FOLLOW) == 0);
-        assert_se(path_is_mount_point(dirlink1file, 0) == 0);
+        assert_se(path_is_mount_point(dir1file, NULL, AT_SYMLINK_FOLLOW) == 0);
+        assert_se(path_is_mount_point(dir1file, NULL, 0) == 0);
+        assert_se(path_is_mount_point(dirlink1file, NULL, AT_SYMLINK_FOLLOW) == 0);
+        assert_se(path_is_mount_point(dirlink1file, NULL, 0) == 0);
 
         /* these tests will only work as root */
         if (mount(file1, file2, NULL, MS_BIND, NULL) >= 0) {
@@ -423,10 +423,10 @@ static void test_path_is_mount_point(void) {
 
                 /* files */
                 /* capture results in vars, to avoid dangling mounts on failure */
-                rf = path_is_mount_point(file2, 0);
-                rt = path_is_mount_point(file2, AT_SYMLINK_FOLLOW);
-                rlf = path_is_mount_point(link2, 0);
-                rlt = path_is_mount_point(link2, AT_SYMLINK_FOLLOW);
+                rf = path_is_mount_point(file2, NULL, 0);
+                rt = path_is_mount_point(file2, NULL, AT_SYMLINK_FOLLOW);
+                rlf = path_is_mount_point(link2, NULL, 0);
+                rlt = path_is_mount_point(link2, NULL, AT_SYMLINK_FOLLOW);
 
                 assert_se(umount(file2) == 0);
 
@@ -444,13 +444,13 @@ static void test_path_is_mount_point(void) {
 
                 assert_se(mount(dir2, dir1, NULL, MS_BIND, NULL) >= 0);
 
-                rf = path_is_mount_point(dir1, 0);
-                rt = path_is_mount_point(dir1, AT_SYMLINK_FOLLOW);
-                rlf = path_is_mount_point(dirlink1, 0);
-                rlt = path_is_mount_point(dirlink1, AT_SYMLINK_FOLLOW);
+                rf = path_is_mount_point(dir1, NULL, 0);
+                rt = path_is_mount_point(dir1, NULL, AT_SYMLINK_FOLLOW);
+                rlf = path_is_mount_point(dirlink1, NULL, 0);
+                rlt = path_is_mount_point(dirlink1, NULL, AT_SYMLINK_FOLLOW);
                 /* its parent is a mount point, but not /file itself */
-                rl1f = path_is_mount_point(dirlink1file, 0);
-                rl1t = path_is_mount_point(dirlink1file, AT_SYMLINK_FOLLOW);
+                rl1f = path_is_mount_point(dirlink1file, NULL, 0);
+                rl1t = path_is_mount_point(dirlink1file, NULL, AT_SYMLINK_FOLLOW);
 
                 assert_se(umount(dir1) == 0);