From 3502b31fb0b7f19fa681d4444f1e6b97d5be0cea Mon Sep 17 00:00:00 2001
From: Laurent Bercot <ska-skaware@skarnet.org>
Date: Tue, 23 Dec 2025 18:32:49 +0000
Subject:  Make fd_sanitize() a real function

---
 src/include/skalibs/djbunix.h |  2 +-
 src/libstddjb/fd_sanitize.c   | 13 +++++++++++++
 2 files changed, 14 insertions(+), 1 deletion(-)
 create mode 100644 src/libstddjb/fd_sanitize.c

(limited to 'src')

diff --git a/src/include/skalibs/djbunix.h b/src/include/skalibs/djbunix.h
index 0304ce8..29e37d2 100644
--- a/src/include/skalibs/djbunix.h
+++ b/src/include/skalibs/djbunix.h
@@ -31,7 +31,7 @@ extern int fd_sync (int) ;
 extern off_t fd_cat (int, int) ;
 extern off_t fd_catn (int, int, off_t) ;
 extern int fd_ensure_open (int, int) ;
-#define fd_sanitize() (fd_ensure_open(0, 0) && fd_ensure_open(1, 1) && fd_ensure_open(2, 1))
+extern void fd_sanitize (void) ;
 extern void fd_shutdown (int, int) ;
 
 extern int fd_lock (int, int, int) ;
diff --git a/src/libstddjb/fd_sanitize.c b/src/libstddjb/fd_sanitize.c
new file mode 100644
index 0000000..d9349cc
--- /dev/null
+++ b/src/libstddjb/fd_sanitize.c
@@ -0,0 +1,13 @@
+/* ISC license. */
+
+#include <unistd.h>
+
+#include <skalibs/strerr.h>
+#include <skalibs/djbunix.h>
+
+void fd_sanitize (void)
+{
+  if (!fd_ensure_open(2, 1)) _exit(111) ;
+  if (!fd_ensure_open(1, 1)) strerr_diefu3sys(111, "ensure std", "out", " is open") ;
+  if (!fd_ensure_open(0, 0)) strerr_diefu3sys(111, "ensure std", "in",  " is open") ;
+}
-- 
cgit v1.3.1