X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fmisc%2Fgetrusage.c;h=8e03e2e3db4e3bbb746a64e4ad32d321d08cd33a;hb=5850546e9669f793aab61dfc7c4f2c1ff35c4b29;hp=1b8850f99582ccbbbbe308e82824cb36c79b5d54;hpb=0b44a0315b47dd8eced9f3b7f31580cf14bbfc01;p=musl

diff --git a/src/misc/getrusage.c b/src/misc/getrusage.c
index 1b8850f9..8e03e2e3 100644
--- a/src/misc/getrusage.c
+++ b/src/misc/getrusage.c
@@ -1,20 +1,35 @@
 #include <sys/resource.h>
 #include <string.h>
+#include <errno.h>
 #include "syscall.h"
 
-/* this is a huge hack to make up for the kernel's stupid 32bit time_t
- * without having to recopy the whole rusage structure ourselves.. */
-
 int getrusage(int who, struct rusage *ru)
 {
-	struct { long tv_sec, tv_usec; } ktv[2];
-	char *fakeaddr = ((char *)ru + sizeof(struct timeval [2]) - sizeof ktv);
-	if (syscall2(__NR_getrusage, who, (long)fakeaddr) < 0)
-		return -1;
-	memcpy(ktv, fakeaddr, sizeof ktv);
-	ru->ru_utime.tv_sec  = ktv[0].tv_sec;
-	ru->ru_utime.tv_usec = ktv[0].tv_usec;
-	ru->ru_stime.tv_sec  = ktv[1].tv_sec;
-	ru->ru_stime.tv_usec = ktv[1].tv_usec;
-	return 0;
+	int r;
+#ifdef SYS_getrusage_time64
+	long long kru64[18];
+	r = __syscall(SYS_getrusage_time64, who, kru64);
+	if (!r) {
+		ru->ru_utime = (struct timeval)
+			{ .tv_sec = kru64[0], .tv_usec = kru64[1] };
+		ru->ru_stime = (struct timeval)
+			{ .tv_sec = kru64[2], .tv_usec = kru64[3] };
+		char *slots = (char *)&ru->ru_maxrss;
+		for (int i=0; i<14; i++)
+			*(long *)(slots + i*sizeof(long)) = kru64[4+i];
+	}
+	if (SYS_getrusage_time64 == SYS_getrusage || r != -ENOSYS)
+		return __syscall_ret(r);
+#endif
+	char *dest = (char *)&ru->ru_maxrss - 4*sizeof(long);
+	r = __syscall(SYS_getrusage, who, dest);
+	if (!r && sizeof(time_t) > sizeof(long)) {
+		long kru[4];
+		memcpy(kru, dest, 4*sizeof(long));
+		ru->ru_utime = (struct timeval)
+			{ .tv_sec = kru[0], .tv_usec = kru[1] };
+		ru->ru_stime = (struct timeval)
+			{ .tv_sec = kru[2], .tv_usec = kru[3] };
+	}
+	return __syscall_ret(r);
 }