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

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

diff --git a/tests/helpers/test_mkfds.c b/tests/helpers/test_mkfds.c
index 5350850b2189a8eb076794be1dc540cc733de15b..11fd1013341aba4c233dc4ded46877d3884de82b 100644 (file)
--- a/tests/helpers/test_mkfds.c
+++ b/tests/helpers/test_mkfds.c
@@ -47,10 +47,12 @@
 #include <sys/socket.h>
 #include <sys/shm.h>
 #include <sys/syscall.h>
+#include <sys/timerfd.h>
 #include <sys/types.h>
 #include <sys/un.h>
 #include <sys/user.h>
 #include <sys/wait.h>
+#include <time.h>
 #include <unistd.h>
 
 #include "c.h"
@@ -2315,6 +2317,102 @@ static void *make_eventpoll(const struct factory *factory _U_, struct fdesc fdes
        return NULL;
 }
 
+static bool decode_clockid(const char *sclockid, clockid_t *clockid)
+{
+       if (sclockid == NULL)
+               return false;
+       if (sclockid[0] == '\0')
+               return false;
+
+       if (strcmp(sclockid, "realtime") == 0)
+               *clockid = CLOCK_REALTIME;
+       else if (strcmp(sclockid, "monotonic") == 0)
+               *clockid = CLOCK_MONOTONIC;
+       else if (strcmp(sclockid, "boottime") == 0)
+               *clockid = CLOCK_BOOTTIME;
+       else if (strcmp(sclockid, "realtime-alarm") == 0)
+               *clockid = CLOCK_REALTIME_ALARM;
+       else if (strcmp(sclockid, "boottime-alarm") == 0)
+               *clockid = CLOCK_BOOTTIME_ALARM;
+       else
+               return false;
+       return true;
+}
+
+static void *make_timerfd(const struct factory *factory, struct fdesc fdescs[],
+                         int argc, char ** argv)
+{
+       int tfd;
+       struct timespec now;
+       struct itimerspec tspec;
+
+       struct arg abstime = decode_arg("abstime", factory->params, argc, argv);
+       bool babstime = ARG_BOOLEAN(abstime);
+
+       struct arg remaining = decode_arg("remaining", factory->params, argc, argv);
+       unsigned int uremaining = ARG_UINTEGER(remaining);
+
+       struct arg interval = decode_arg("interval", factory->params, argc, argv);
+       unsigned int uinterval = ARG_UINTEGER(interval);
+
+       struct arg interval_frac = decode_arg("interval-nanofrac", factory->params, argc, argv);
+       unsigned int uinterval_frac = ARG_UINTEGER(interval_frac);
+
+       struct arg clockid_ = decode_arg("clockid", factory->params, argc, argv);
+       const char *sclockid = ARG_STRING(clockid_);
+       clockid_t clockid;
+
+       if (decode_clockid (sclockid, &clockid) == false)
+               err(EXIT_FAILURE, "unknown clockid: %s", sclockid);
+
+       free_arg(&clockid_);
+       free_arg(&interval_frac);
+       free_arg(&interval);
+       free_arg(&remaining);
+       free_arg(&abstime);
+
+       if (babstime) {
+               int r = clock_gettime(clockid, &now);
+               if (r == -1)
+                       err(EXIT_FAILURE, "failed in clock_gettime(2)");
+       }
+
+       tfd = timerfd_create(clockid, 0);
+       if (tfd < 0)
+               err(EXIT_FAILURE, "failed in timerfd_create(2)");
+
+       tspec.it_value.tv_sec = (babstime? now.tv_sec: 0) + uremaining;
+       tspec.it_value.tv_nsec = (babstime? now.tv_nsec: 0);
+
+       tspec.it_interval.tv_sec = uinterval;
+       tspec.it_interval.tv_nsec = uinterval_frac;
+
+       if (timerfd_settime(tfd, babstime? TFD_TIMER_ABSTIME: 0, &tspec, NULL) < 0) {
+               int e = errno;
+               close(tfd);
+               errno = e;
+               err(EXIT_FAILURE, "failed in timerfd_settime(2)");
+       }
+
+       if (tfd != fdescs[0].fd) {
+               if (dup2(tfd, fdescs[0].fd) < 0) {
+                       int e = errno;
+                       close(tfd);
+                       errno = e;
+                       err(EXIT_FAILURE, "failed to dup %d -> %d", tfd, fdescs[0].fd);
+               }
+               close(tfd);
+       }
+
+       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[] = {
        {
@@ -2935,6 +3033,48 @@ static const struct factory factories[] = {
                        PARAM_END
                }
        },
+       {
+               .name = "timerfd",
+               .desc = "make timerfd",
+               .priv = false,
+               .N    = 1,
+               .EX_N = 0,
+               .make = make_timerfd,
+               .params = (struct parameter []) {
+                       {
+                               .name = "clockid",
+                               .type = PTYPE_STRING,
+                               .desc = "ID: realtime, monotonic, boottime, realtime-alarm, or boottime-alarm",
+                               .defv.string = "realtime",
+                       },
+                       {
+                               .name = "abstime",
+                               .type = PTYPE_BOOLEAN,
+                               .desc = "use TFD_TIMER_ABSTIME flag",
+                               .defv.boolean = false,
+                       },
+                       {
+                               .name = "remaining",
+                               .type = PTYPE_UINTEGER,
+                               .desc = "remaining seconds for expiration",
+                               .defv.uinteger = 99,
+                       },
+                       {
+                               .name = "interval",
+                               .type = PTYPE_UINTEGER,
+                               .desc = "inteval in seconds",
+                               .defv.uinteger = 10,
+                       },
+                       {
+                               .name = "interval-nanofrac",
+                               .type = PTYPE_UINTEGER,
+                               .desc = "nsec part of inteval",
+                               .defv.uinteger = 0,
+                       },
+
+                       PARAM_END
+               }
+       }
 };
 
 static int count_parameters(const struct factory *factory)