openat
fid = OPENAT_TZDIR ? openat(dd, relname, oflags) : open(name, oflags);
__typeof(openat) _sys_openat;
__strong_alias(_openat, openat)
__weak_alias(openat,rump___sysimpl_openat);
int openat(int, const char *, int, ...);
ATF_REQUIRE((fd = openat(dfd, BASEFILE, O_RDWR, 0)) != -1);
ATF_REQUIRE((fd = openat(dfd, BASEFILE, O_RDWR, 0)) != -1);
ATF_REQUIRE((fd = openat(dfd, BASEFILE, O_RDWR, 0)) != -1);
ATF_REQUIRE((fd = openat(dfd, BASEFILE, O_RDWR, 0)) != -1);
ATF_REQUIRE((fd = openat(dfd, BASEFILE, O_RDWR, 0)) != -1);
ATF_REQUIRE((fd = openat(dfd, BASEFILE, O_RDWR, 0)) != -1);
ATF_REQUIRE((fd = openat(dfd, BASEFILE, O_RDWR, 0)) == -1);
ATF_REQUIRE((fd = openat(dfd, BASEFILE, O_RDWR, 0)) != -1);
ATF_REQUIRE((fd = openat(dfd, BASEFILE, O_RDWR, 0)) == -1);
ATF_REQUIRE((fd = openat(AT_FDCWD, FILEERR, O_RDONLY, 0)) == -1);
ATF_REQUIRE((fd = openat(dfd, FILEERR, O_RDONLY, 0)) == -1);
ATF_REQUIRE((fd = openat(dfd, BASEFILE, O_RDONLY, 0)) == -1);
ATF_REQUIRE((fd = openat(-1, FILE, O_RDONLY, 0)) == -1);
ATF_REQUIRE((fd = openat(dfd, BASEFILE, O_RDONLY, 0)) != -1);
ATF_REQUIRE((fd = openat(AT_FDCWD, BASEFILE, O_RDONLY, 0)) != -1);
RL(openat(AT_FDCWD, "file", O_RDWR));