add $sys substitution

[elogind.git] / udev_rules.c

diff --git a/udev_rules.c b/udev_rules.c
index 1139c99a7d0e84ff3b8e289a3c6af251d5aabf76..e61c9a69b062c02fa2fe083911cc964ba8789d3e 100644 (file)
--- a/udev_rules.c
+++ b/udev_rules.c
@@ -292,6 +292,7 @@ void udev_rules_apply_format(struct udevice *udev, char *string, size_t maxsize)
                SUBST_PARENT,
                SUBST_TEMP_NODE,
                SUBST_ROOT,
+               SUBST_SYS,
                SUBST_ENV,
        };
        static const struct subst_map {
@@ -311,6 +312,7 @@ void udev_rules_apply_format(struct udevice *udev, char *string, size_t maxsize)
                { .name = "parent",     .fmt = 'P',     .type = SUBST_PARENT },
                { .name = "tempnode",   .fmt = 'N',     .type = SUBST_TEMP_NODE },
                { .name = "root",       .fmt = 'r',     .type = SUBST_ROOT },
+               { .name = "sys",        .fmt = 'S',     .type = SUBST_SYS },
                { .name = "env",        .fmt = 'E',     .type = SUBST_ENV },
                { NULL, '\0', 0 }
        };
@@ -516,6 +518,10 @@ found:
                        strlcat(string, udev_root, maxsize);
                        dbg("substitute udev_root '%s'", udev_root);
                        break;
+               case SUBST_SYS:
+                       strlcat(string, sysfs_path, maxsize);
+                       dbg("substitute sysfs_path '%s'", sysfs_path);
+                       break;
                case SUBST_ENV:
                        if (attr == NULL) {
                                dbg("missing attribute");