adapt res_msend DNS query core for working with multiple sockets

[musl] / src / signal / setitimer.c

diff --git a/src/signal/setitimer.c b/src/signal/setitimer.c
index cacab03..0dfbeb4 100644 (file)
--- a/src/signal/setitimer.c
+++ b/src/signal/setitimer.c
@@ -1,15 +1,26 @@
 #include <sys/time.h>
+#include <errno.h>
 #include "syscall.h"
 
-int setitimer(int which, const struct itimerval *new, struct itimerval *old)
-{
-       int ret;
-       long knew[4] = {
-               new->it_interval.tv_sec, new->it_interval.tv_usec,
-               new->it_value.tv_sec, new->it_value.tv_usec
-       }, kold[4];
+#define IS32BIT(x) !((x)+0x80000000ULL>>32)
 
-       if (!(ret = syscall3(__NR_setitimer, which, (long)&knew, old ? (long)&kold : 0)) && old)
-               *old = (struct itimerval){ { kold[0], kold[1] }, { kold[2], kold[3] } };
-       return ret;
+int setitimer(int which, const struct itimerval *restrict new, struct itimerval *restrict old)
+{
+       if (sizeof(time_t) > sizeof(long)) {
+               time_t is = new->it_interval.tv_sec, vs = new->it_value.tv_sec;
+               long ius = new->it_interval.tv_usec, vus = new->it_value.tv_usec;
+               if (!IS32BIT(is) || !IS32BIT(vs))
+                       return __syscall_ret(-ENOTSUP);
+               long old32[4];
+               int r = __syscall(SYS_setitimer, which,
+                       ((long[]){is, ius, vs, vus}), old32);
+               if (!r && old) {
+                       old->it_interval.tv_sec = old32[0];
+                       old->it_interval.tv_usec = old32[1];
+                       old->it_value.tv_sec = old32[2];
+                       old->it_value.tv_usec = old32[3];
+               }
+               return __syscall_ret(r);
+       }
+       return syscall(SYS_setitimer, which, new, old);
 }