X-Git-Url: https://git.distorted.org.uk/~mdw/yaid/blobdiff_plain/b9eb1a366ff0127c49a0589905435680b137d49f..HEAD:/yaid.h

diff --git a/yaid.h b/yaid.h
index a91ea27..eb874cb 100644
--- a/yaid.h
+++ b/yaid.h
@@ -67,6 +67,7 @@
 #include <mLib/dstr.h>
 #include <mLib/fdflags.h>
 #include <mLib/fwatch.h>
+#include <mLib/macros.h>
 #include <mLib/mdwopt.h>
 #include <mLib/quis.h>
 #include <mLib/report.h>
@@ -248,8 +249,11 @@ struct query {
 /* Format and log MSG somewhere sensible, at the syslog(3) priority PRIO.
  * Prefix it with a description of the query Q, if non-null.
  */
-extern void logmsg(const struct query */*q*/,
-		   int /*prio*/, const char */*msg*/, ...);
+extern void PRINTF_LIKE(3, 4)
+  logmsg(const struct query */*q*/, int /*prio*/, const char */*msg*/, ...);
+
+/* Format and report MSG as a fatal error, and exit. */
+extern void PRINTF_LIKE(1, 2) fatal(const char */*msg*/, ...);
 
 /*----- System-specific connection identification code --------------------*/
 
@@ -259,6 +263,12 @@ extern void logmsg(const struct query */*q*/,
  */
 extern void identify(struct query */*q*/);
 
+/* Fill the buffer at P with SZ random bytes.  The buffer will be moderately
+ * large: this is intended to be a low-level interface, not a general-purpose
+ * utility.
+ */
+extern void fill_random(void */*p*/, size_t /*sz*/);
+
 /* Initialize the system-specific code. */
 extern void init_sys(void);
 
@@ -347,6 +357,11 @@ struct policy_file {
 
 /* Open a policy file by NAME.  The description WHAT and query Q are used for
  * formatting error messages for the log.
+ *
+ * This function is somewhat careful only to read from actual regular files,
+ * though (if the filesystem object identified by NAME is a symlink, say) it
+ * might open a device node or other exotic thing without reading it.  This
+ * is likely harmless, since we're running as an unprivileged user anyway.
  */
 extern int open_policy_file(struct policy_file */*pf*/, const char */*name*/,
 			    const char */*what*/, const struct query */*q*/,