meta: move photon/libc to root

libc/sys/horizon/time.c

@@ -0,0 +1,78 @@
+#include <magenta/types.h>
+#include <magenta/misc.h>
+#include <magenta/errors.h>
+#include <magenta/clock.h>
+#include <time.h>
+#include <errno.h>
+
+clock_t __sys_clock(void)
+{
+    mx_time_val_t v;
+    mx_clock_get_time(MX_CLOCK_MONOTONIC, &v);
+
+    return (v.sec * CLOCKS_PER_SEC) + v.nsec;
+}
+
+time_t __sys_time(void)
+{
+    mx_time_val_t v;
+    mx_clock_get_time(MX_CLOCK_REALTIME, &v);
+
+    return v.sec;
+}
+
+int nanosleep(const struct timespec *req, struct timespec *rem)
+{
+    if (!req) {
+        __set_errno(EFAULT);
+        return -1;
+    }
+
+    mx_nanosleep(mx_deadline_after(MX_SEC(req->tv_sec) + MX_NSEC(req->tv_nsec)));
+    return 0;
+}
+
+int __sys_clock_getres(clockid_t clk_id, struct timespec *res)
+{
+    mx_time_val_t v;
+    mx_status_t s = mx_clock_get_resolution(clk_id, &v);
+
+    if (s != MX_OK) {
+        /* TODO set errno */
+        return -1;
+    }
+
+    res->tv_sec = v.sec;
+    res->tv_nsec = v.nsec;
+
+    return 0;
+}
+
+int __sys_clock_gettime(clockid_t clk_id, struct timespec *tp)
+{
+    mx_time_val_t v;
+    mx_status_t s = mx_clock_get_time(clk_id, &v);
+
+    if (s != MX_OK) {
+        /* TODO set errno */
+        return -1;
+    }
+
+    tp->tv_sec = v.sec;
+    tp->tv_nsec = v.nsec;
+
+    return 0;
+}
+
+int __sys_clock_settime(clockid_t clk_id, const struct timespec *tp)
+{
+    mx_time_val_t v = { .sec = tp->tv_sec, .nsec = tp->tv_nsec };
+    mx_status_t s = mx_clock_set_time(clk_id, &v);
+
+    if (s != MX_OK) {
+        /* TODO set errno */
+        return -1;
+    }
+
+    return 0;
+}