use more _cleanup_ macro

src/core/automount.c

@@ -144,7 +144,7 @@ static int automount_add_default_dependencies(Automount *a) {
 
 static int automount_verify(Automount *a) {
         bool b;
-        char *e;
+        _cleanup_free_ char *e = NULL;
         assert(a);
 
         if (UNIT(a)->load_state != UNIT_LOADED)
@@ -160,7 +160,6 @@ static int automount_verify(Automount *a) {
                 return -ENOMEM;
 
         b = unit_has_name(UNIT(a), e);
-        free(e);
 
         if (!b) {
                 log_error_unit(UNIT(a)->id, "%s's Where setting doesn't match unit name. Refusing.", UNIT(a)->id);

src/core/execute.c

@@ -561,7 +561,7 @@ static int restore_confirm_stdio(int *saved_stdin,
 
 static int ask_for_confirmation(char *response, char **argv) {
         int saved_stdout = -1, saved_stdin = -1, r;
-        char *line;
+        _cleanup_free_ char *line = NULL;
 
         r = setup_confirm_stdio(&saved_stdin, &saved_stdout);
         if (r < 0)
@@ -572,7 +572,6 @@ static int ask_for_confirmation(char *response, char **argv) {
                 return -ENOMEM;
 
         r = ask(response, "yns", "Execute %s? [Yes, No, Skip] ", line);
-        free(line);
 
         restore_confirm_stdio(&saved_stdin, &saved_stdout);
 
@@ -2058,8 +2057,8 @@ int exec_context_load_environment(const ExecContext *c, char ***l) {
 }
 
 static bool tty_may_match_dev_console(const char *tty) {
-        char *active = NULL, *console;
+        _cleanup_free_ char *active = NULL;
-        bool b;
+       char *console;
 
         if (startswith(tty, "/dev/"))
                 tty += 5;
@@ -2074,10 +2073,7 @@ static bool tty_may_match_dev_console(const char *tty) {
                 return true;
 
         /* "tty0" means the active VC, so it may be the same sometimes */
-        b = streq(console, tty) || (streq(console, "tty0") && tty_is_vc(tty));
+        return streq(console, tty) || (streq(console, "tty0") && tty_is_vc(tty));
-        free(active);
-
-        return b;
 }
 
 bool exec_context_may_touch_console(ExecContext *ec) {
@@ -2467,10 +2463,10 @@ char *exec_command_line(char **argv) {
 }
 
 void exec_command_dump(ExecCommand *c, FILE *f, const char *prefix) {
-        char *p2;
+        _cleanup_free_ char *p2 = NULL;
         const char *prefix2;
 
-        char *cmd;
+        _cleanup_free_ char *cmd = NULL;
 
         assert(c);
         assert(f);
@@ -2486,11 +2482,7 @@ void exec_command_dump(ExecCommand *c, FILE *f, const char *prefix) {
                 "%sCommand Line: %s\n",
                 prefix, cmd ? cmd : strerror(ENOMEM));
 
-        free(cmd);
-
         exec_status_dump(&c->exec_status, f, prefix2);
-
-        free(p2);
 }
 
 void exec_command_dump_list(ExecCommand *c, FILE *f, const char *prefix) {

src/core/killall.c

@@ -202,7 +202,7 @@ static int killall(int sig, Set *pids, bool send_sighup) {
 
 void broadcast_signal(int sig, bool wait_for_exit, bool send_sighup) {
         sigset_t mask, oldmask;
-        Set *pids = NULL;
+        _cleanup_set_free_ Set *pids = NULL;
 
         if (wait_for_exit)
                 pids = set_new(trivial_hash_func, trivial_compare_func);
@@ -223,6 +223,4 @@ void broadcast_signal(int sig, bool wait_for_exit, bool send_sighup) {
                 wait_for_children(pids, &mask);
 
         assert_se(sigprocmask(SIG_SETMASK, &oldmask, NULL) == 0);
-
-        set_free(pids);
 }

src/core/umount.c

@@ -126,9 +126,8 @@ static int mount_points_list_get(MountPoint **head) {
 }
 
 static int swap_list_get(MountPoint **head) {
-        FILE *proc_swaps;
+        _cleanup_fclose_ FILE *proc_swaps = NULL;
         unsigned int i;
-        int r;
 
         assert(head);
 
@@ -168,26 +167,19 @@ static int swap_list_get(MountPoint **head) {
                 free(dev);
 
                 if (!d) {
-                        r = -ENOMEM;
+                        return -ENOMEM;
-                        goto finish;
                 }
 
                 if (!(swap = new0(MountPoint, 1))) {
                         free(d);
-                        r = -ENOMEM;
+                        return -ENOMEM;
-                        goto finish;
                 }
 
                 swap->path = d;
                 LIST_PREPEND(mount_point, *head, swap);
         }
 
-        r = 0;
+        return 0;
-
-finish:
-        fclose(proc_swaps);
-
-        return r;
 }
 
 static int loopback_list_get(MountPoint **head) {

src/shared/conf-files.c

@@ -98,7 +98,7 @@ static int base_cmp(const void *a, const void *b) {
 }
 
 static int conf_files_list_strv_internal(char ***strv, const char *suffix, const char *root, char **dirs) {
-        Hashmap *fh;
+        _cleanup_hashmap_free_ Hashmap *fh = NULL;
         char **files, **p;
         int r;
 
@@ -116,7 +116,6 @@ static int conf_files_list_strv_internal(char ***strv, const char *suffix, const
         STRV_FOREACH(p, dirs) {
                 r = files_add(fh, root, *p, suffix);
                 if (r == -ENOMEM) {
-                        hashmap_free_free(fh);
                         return r;
                 } else if (r < 0)
                         log_debug("Failed to search for files in %s: %s",
@@ -125,14 +124,12 @@ static int conf_files_list_strv_internal(char ***strv, const char *suffix, const
 
         files = hashmap_get_strv(fh);
         if (files == NULL) {
-                hashmap_free_free(fh);
                 return -ENOMEM;
         }
 
         qsort_safe(files, hashmap_size(fh), sizeof(char *), base_cmp);
         *strv = files;
 
-        hashmap_free(fh);
         return 0;
 }
 

src/shared/fdset.c

@@ -104,7 +104,7 @@ int fdset_remove(FDSet *s, int fd) {
 }
 
 int fdset_new_fill(FDSet **_s) {
-        DIR *d;
+        _cleanup_closedir_ DIR *d = NULL;
         struct dirent *de;
         int r = 0;
         FDSet *s;
@@ -150,8 +150,6 @@ int fdset_new_fill(FDSet **_s) {
         s = NULL;
 
 finish:
-        closedir(d);
-
         /* We won't close the fds here! */
         if (s)
                 set_free(MAKE_SET(s));

src/shared/path-util.c

@@ -442,7 +442,7 @@ int path_is_mount_point(const char *t, bool allow_symlink) {
         };
 
         int mount_id, mount_id_parent;
-        char *parent;
+        _cleanup_free_ char *parent = NULL;
         struct stat a, b;
         int r;
 
@@ -473,7 +473,6 @@ int path_is_mount_point(const char *t, bool allow_symlink) {
 
         h.handle.handle_bytes = MAX_HANDLE_SZ;
         r = name_to_handle_at(AT_FDCWD, parent, &h.handle, &mount_id_parent, 0);
-        free(parent);
         if (r < 0) {
                 /* The parent can't do name_to_handle_at() but the
                  * directory we are interested in can? If so, it must
@@ -504,7 +503,6 @@ fallback:
                 return r;
 
         r = lstat(parent, &b);
-        free(parent);
         if (r < 0)
                 return -errno;
 

src/shared/util.c

@@ -1440,7 +1440,7 @@ _pure_ static bool fd_in_set(int fd, const int fdset[], unsigned n_fdset) {
 }
 
 int close_all_fds(const int except[], unsigned n_except) {
-        DIR *d;
+        _cleanup_closedir_ DIR *d = NULL;
         struct dirent *de;
         int r = 0;
 
@@ -1495,7 +1495,6 @@ int close_all_fds(const int except[], unsigned n_except) {
                 }
         }
 
-        closedir(d);
         return r;
 }