Merge tag 'debian/1.8.5p2-1' into squeeze

[debian/sudo] / compat / nanosleep.c

diff --git a/compat/nanosleep.c b/compat/nanosleep.c
new file mode 100644 (file)
index 0000000..23e3b9e
--- /dev/null
+++ b/compat/nanosleep.c
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2009-2011 Todd C. Miller <Todd.Miller@courtesan.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <sys/types.h>
+#include <sys/time.h>
+#ifdef HAVE_SYS_SELECT_H
+#include <sys/select.h>
+#endif /* HAVE_SYS_SELECT_H */
+#if TIME_WITH_SYS_TIME
+# include <time.h>
+#endif
+#ifndef HAVE_STRUCT_TIMESPEC
+# include "compat/timespec.h"
+#endif
+#include <errno.h>
+
+#include "missing.h"
+
+int
+nanosleep(const struct timespec *ts, struct timespec *rts)
+{
+    struct timeval timeout, endtime, now;
+    int rval;
+
+    timeout.tv_sec = ts->tv_sec;
+    timeout.tv_usec = ts->tv_nsec / 1000;
+    if (rts != NULL) {
+       gettimeofday(&endtime, NULL);
+       timevaladd(&endtime, &timeout);
+    }
+    rval = select(0, NULL, NULL, NULL, &timeout);
+    if (rts != NULL && rval == -1 && errno == EINTR) {
+       gettimeofday(&now, NULL);
+       timevalsub(&endtime, &now);
+       rts->tv_sec = endtime.tv_sec;
+       rts->tv_nsec = endtime.tv_usec * 1000;
+    }
+    return rval;
+}