ccx-utils

commit 03a509da002f4be9c9d40e4b7c88ec3cca357e95
parent 42f9a2d5eed3755f3bd7d5b9b489641739fa356b
Author: Jan Pobrislo <ccx@te2000.cz>
Date:   Tue, 30 Jul 2024 12:46:21 +0000

Make fdrecv work too by disabling cloexec flag on the fd

Diffstat:
M
src/fdrecv.c
 | 
5
+++++
M
src/test-fdsend
 | 
6
+++++-

2 files changed, 10 insertions(+), 1 deletion(-)
diff --git a/src/fdrecv.c b/src/fdrecv.c
@@ -1,4 +1,5 @@
 #include <errno.h>
+#include <fcntl.h>
 #include <sys/select.h>
 
 #include <skalibs/types.h>
@@ -37,6 +38,10 @@ int main (int argc, char const *const *argv)
   if(fd < 0) {
       strerr_dief1sys(111, "recvmsg()");
   }
+  /* disable close-on-exec flag if present on fd */
+  if(fcntl(fd, F_SETFD, fcntl(fd, F_GETFD, NULL) & ~FD_CLOEXEC) == -1) {
+      strerr_dief1sys(111, "fcntl() disabling FD_CLOEXEC");
+  }
 
   size_t env_size = strlen(argv[2]) + uint_fmt(0, fd) + 2;
   char envstr[env_size];
diff --git a/src/test-fdsend b/src/test-fdsend
@@ -6,4 +6,8 @@ background {
   redirfd -r 0 ./fdsend.c ./fdsend 3 0 true
 }
 fdclose 3
-./fdrecvto 4 0 cat
+# ./fdrecvto 4 0 cat
+./fdrecv 4 FD
+importas -i FD FD
+fdmove 0 $FD
+cat