tests: (mkfds) add a factory to make a signalfd

Signed-off-by: Masatake YAMATO <yamato@redhat.com>

diff --git a/tests/helpers/test_mkfds.c b/tests/helpers/test_mkfds.c
index 11fd1013341aba4c233dc4ded46877d3884de82b..0afb9624855585836daa731442cb79cb6575bb33 100644 (file)
--- a/tests/helpers/test_mkfds.c
+++ b/tests/helpers/test_mkfds.c
@@ -44,6 +44,7 @@
 #include <sys/mman.h>
 #include <sys/prctl.h>
 #include <sys/select.h>
+#include <sys/signalfd.h>
 #include <sys/socket.h>
 #include <sys/shm.h>
 #include <sys/syscall.h>
@@ -2413,6 +2414,44 @@ static void *make_timerfd(const struct factory *factory, struct fdesc fdescs[],
        return NULL;
 }
 
+static void *make_signalfd(const struct factory *factory _U_, struct fdesc fdescs[],
+                          int argc _U_, char ** argv _U_)
+{
+       sigset_t mask;
+       int numsig = 42;
+
+       if (sigemptyset(&mask) < 0)
+               err(EXIT_FAILURE, "failed in sigemptyset()");
+       if (sigaddset(&mask, SIGFPE) < 0)
+               err(EXIT_FAILURE, "failed in sigaddset(FPE)");
+       if (sigaddset(&mask, SIGUSR1) < 0)
+               err(EXIT_FAILURE, "failed in sigaddset(USR1)");
+       if (sigaddset(&mask, numsig) < 0)
+               err(EXIT_FAILURE, "failed in sigaddset(%d)", numsig);
+
+       int sfd= signalfd(-1, &mask, 0);
+       if (sfd < 0)
+               err(EXIT_FAILURE, "failed in signalfd(2)");
+
+       if (sfd != fdescs[0].fd) {
+               if (dup2(sfd, fdescs[0].fd) < 0) {
+                       int e = errno;
+                       close(sfd);
+                       errno = e;
+                       err(EXIT_FAILURE, "failed to dup %d -> %d", sfd, fdescs[0].fd);
+               }
+               close(sfd);
+       }
+
+       fdescs[0] = (struct fdesc){
+               .fd    = fdescs[0].fd,
+               .close = close_fdesc,
+               .data  = NULL
+       };
+
+       return NULL;
+}
+
 #define PARAM_END { .name = NULL, }
 static const struct factory factories[] = {
        {
@@ -3074,7 +3113,18 @@ static const struct factory factories[] = {
 
                        PARAM_END
                }
-       }
+       },
+       {
+               .name = "signalfd",
+               .desc = "make signalfd",
+               .priv = false,
+               .N    = 1,
+               .EX_N = 0,
+               .make = make_signalfd,
+               .params = (struct parameter []) {
+                       PARAM_END
+               }
+       },
 };
 
 static int count_parameters(const struct factory *factory)