Add dependent system includes to make sudo_*.h more standalone.

In the past we've relied on the various .c files to include the
system headers that define types that the sudo_*.h headers require.
This is fragile and can cause issues when includes get re-ordered.

include/sudo_compat.h

@@ -24,6 +24,7 @@
 #ifndef SUDO_COMPAT_H
 #define SUDO_COMPAT_H
 
+#include <sys/types.h>	/* for gid_t, mode_t, size_t, ssize_t, uid_t */
 #include <stdio.h>
 #if !defined(HAVE_VSNPRINTF) || !defined(HAVE_VASPRINTF) || \
     !defined(HAVE_VSYSLOG) || defined(PREFER_PORTABLE_SNPRINTF)

include/sudo_conf.h

@@ -19,6 +19,12 @@
 #ifndef SUDO_CONF_H
 #define SUDO_CONF_H
 
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif
+
 #include "sudo_queue.h"
 
 /* Flags for sudo_conf_read() */

include/sudo_debug.h

@@ -19,13 +19,13 @@
 #ifndef SUDO_DEBUG_H
 #define SUDO_DEBUG_H
 
+#include <sys/types.h>		/* for id_t, size_t, ssize_t, time_t */
 #include <stdarg.h>
 #ifdef HAVE_STDBOOL_H
 # include <stdbool.h>
 #else
 # include "compat/stdbool.h"
 #endif
-#include <sys/types.h>
 #include "sudo_queue.h"
 
 /*

include/sudo_iolog.h

@@ -19,6 +19,8 @@
 #ifndef SUDO_IOLOG_H
 #define SUDO_IOLOG_H
 
+#include <sys/types.h>	/* for gid_t, mode_t, size_t, ssize_t, uid_t */
+
 #ifdef HAVE_ZLIB_H
 # include <zlib.h>	/* for gzFile */
 #endif

include/sudo_json.h

@@ -16,6 +16,17 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+#ifndef SUDO_JSON_H
+#define SUDO_JSON_H
+
+#include <sys/types.h>	/* for id_t */
+
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif
+
 /*
  * JSON values may be of the following types.
  */
@@ -83,3 +94,5 @@ __dso_public char *sudo_json_get_buf_v1(struct json_container *json);
 
 __dso_public unsigned int sudo_json_get_len_v1(struct json_container *json);
 #define sudo_json_get_len(_a) sudo_json_get_len_v1((_a))
+
+#endif /* SUDO_JSON_H */

include/sudo_util.h

@@ -19,6 +19,7 @@
 #ifndef SUDO_UTIL_H
 #define SUDO_UTIL_H
 
+#include <sys/types.h>	/* for dev_t, mode_t, gid_t, size_t, ssize_t, uid_t */
 #ifdef HAVE_STDBOOL_H
 # include <stdbool.h>
 #else

plugins/sudoers/sudoers.h

@@ -24,6 +24,7 @@
 #ifndef SUDOERS_SUDOERS_H
 #define SUDOERS_SUDOERS_H
 
+#include <sys/types.h>		/* for gid_t, mode_t, pid_t, size_t, uid_t */
 #include <limits.h>
 #ifdef HAVE_STDBOOL_H
 # include <stdbool.h>