static-nodes: remove creation of static nodes if HAVE_LIBKMOD

This address upstream commit edeb68c53f1cdc452016b4c8512586a70b1262e3
and https://bugs.gentoo.org/show_bug.cgi?id=477890.  If eudev is
configured with --enable-libkmod then we check for kmod >= 14 and
ifdef out the code removed in the upstream commit.  Otherwise we
retain it for modutils.

Signed-off-by: Anthony G. Basile <blueness@gentoo.org>

configure.ac

@@ -1,7 +1,7 @@
 
 AC_PREREQ([2.68])
 AC_INIT([eudev],[1.2],[https://github.com/gentoo/eudev/issues])
-AC_SUBST(UDEV_VERSION, 205)
+AC_SUBST(UDEV_VERSION, 206)
 AC_CONFIG_SRCDIR([src/udev/udevd.c])
 
 AC_USE_SYSTEM_EXTENSIONS
@@ -267,10 +267,10 @@ if test "x${enable_modules}" = xyes; then
 
         AS_IF([test "x${enable_libkmod}" = xyes],
           [AC_CHECK_LIB([kmod], [main],
-            [PKG_CHECK_MODULES(KMOD, [libkmod >= 5])
+            [PKG_CHECK_MODULES(KMOD, [libkmod >= 14])
              AC_SUBST([LIBKMOD], ["-lkmod"])
              AC_DEFINE([HAVE_LIBKMOD], [1],
-                       [Define if you have libkmod])
+                       [AC_MSG_ERROR([*** kmod version >= 14 not found])])
             ],
             [AC_MSG_FAILURE(
                [--enable-libkmod was given, but test for kmod failed])],
@@ -281,7 +281,6 @@ fi
 AM_CONDITIONAL([HAVE_MODULES], [test "x${enable_modules}" = xyes])
 AM_CONDITIONAL([HAVE_LIBKMOD], [test "x${enable_libkmod}" = xyes])
 
-
 # ------------------------------------------------------------------------------
 
 AC_ARG_WITH([modprobe],

src/libudev/strv.c

@@ -142,6 +142,43 @@ char **strv_new(const char *x, ...) {
         return r;
 }
 
+int strv_push(char ***l, char *value) {
+        char **c;
+        unsigned n;
+
+        if (!value)
+                return 0;
+
+        n = strv_length(*l);
+        c = realloc(*l, sizeof(char*) * (n + 2));
+        if (!c)
+                return -ENOMEM;
+
+        c[n] = value;
+        c[n+1] = NULL;
+
+        *l = c;
+        return 0;
+}
+
+int strv_extend(char ***l, const char *value) {
+        char *v;
+        int r;
+
+        if (!value)
+                return 0;
+
+        v = strdup(value);
+        if (!v)
+                return -ENOMEM;
+
+        r = strv_push(l, v);
+        if (r < 0)
+                free(v);
+
+        return r;
+}
+
 char **strv_uniq(char **l) {
         char **i;
 

src/libudev/strv.h

@@ -36,6 +36,9 @@ static inline void strv_freep(char ***l) {
 char **strv_copy(char * const *l);
 unsigned strv_length(char * const *l) _pure_;
 
+int strv_extend(char ***l, const char *value);
+int strv_push(char ***l, char *value);
+
 char **strv_remove(char **l, const char *s);
 char **strv_uniq(char **l);
 

src/libudev/util.c

@@ -664,6 +664,41 @@ int null_or_empty_path(const char *fn) {
         return null_or_empty(&st);
 }
 
+char hexchar(int x) {
+        static const char table[16] = "0123456789abcdef";
+
+        return table[x & 15];
+}
+
+char *xescape(const char *s, const char *bad) {
+        char *r, *t;
+        const char *f;
+
+        /* Escapes all chars in bad, in addition to \ and all special
+         * chars, in \xFF style escaping. May be reversed with
+         * cunescape. */
+
+        r = new(char, strlen(s) * 4 + 1);
+        if (!r)
+                return NULL;
+
+        for (f = s, t = r; *f; f++) {
+
+                if ((*f < ' ') || (*f >= 127) ||
+                    (*f == '\\') || strchr(bad, *f)) {
+                        *(t++) = '\\';
+                        *(t++) = 'x';
+                        *(t++) = hexchar(*f >> 4);
+                        *(t++) = hexchar(*f);
+                } else
+                        *(t++) = *f;
+        }
+
+        *t = 0;
+
+        return r;
+}
+
 bool dirent_is_file_with_suffix(const struct dirent *de, const char *suffix) {
         assert(de);
 

src/libudev/util.h

@@ -131,6 +131,10 @@ char *strnappend(const char *s, const char *suffix, size_t length);
 
 char *truncate_nl(char *s);
 
+char hexchar(int x) _const_;
+
+char *xescape(const char *s, const char *bad);
+
 bool dirent_is_file_with_suffix(const struct dirent *de, const char *suffix) _pure_;
 
 bool ignore_file(const char *filename) _pure_;

src/udev/udevd.c

@@ -811,6 +811,7 @@ static void handle_signal(struct udev *udev, int signo)
         }
 }
 
+#ifndef HAVE_LIBKMOD
 static void static_dev_create_from_modules(struct udev *udev)
 {
         struct utsname kernel;
@@ -881,6 +882,7 @@ static void static_dev_create_from_modules(struct udev *udev)
 
         fclose(f);
 }
+#endif
 
 /*
  * read the kernel commandline, in case we need to get into debug mode
@@ -1033,7 +1035,9 @@ int main(int argc, char *argv[])
         mkdir("/run/udev", 0755);
 
         dev_setup(NULL);
+#ifndef HAVE_LIBKMOD
         static_dev_create_from_modules(udev);
+#endif
 
         /* before opening new files, make sure std{in,out,err} fds are in a sane state */
         if (daemonize) {