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#include <sys/stat.h>
#include <sys/time.h>
#include <fcntl.h>
#include <errno.h>
#include "syscall.h"
#define IS32BIT(x) !((x)+0x80000000ULL>>32)
#define NS_SPECIAL(ns) ((ns)==UTIME_NOW || (ns)==UTIME_OMIT)
int utimensat(int fd, const char *path, const struct timespec times[2], int flags)
{
int r;
if (times && times[0].tv_nsec==UTIME_NOW && times[1].tv_nsec==UTIME_NOW)
times = 0;
#ifdef SYS_utimensat_time64
r = -ENOSYS;
time_t s0=0, s1=0;
long ns0=0, ns1=0;
if (times) {
ns0 = times[0].tv_nsec;
ns1 = times[1].tv_nsec;
if (!NS_SPECIAL(ns0)) s0 = times[0].tv_sec;
if (!NS_SPECIAL(ns1)) s1 = times[1].tv_sec;
}
if (SYS_utimensat == SYS_utimensat_time64 || !IS32BIT(s0) || !IS32BIT(s1))
r = __syscall(SYS_utimensat_time64, fd, path, times ?
((long long[]){s0, ns0, s1, ns1}) : 0, flags);
if (SYS_utimensat == SYS_utimensat_time64 || r!=-ENOSYS)
return __syscall_ret(r);
if (!IS32BIT(s0) || !IS32BIT(s1))
return __syscall_ret(-ENOTSUP);
r = __syscall(SYS_utimensat, fd, path,
times ? ((long[]){s0, ns0, s1, ns1}) : 0, flags);
#else
r = __syscall(SYS_utimensat, fd, path, times, flags);
#endif
#ifdef SYS_futimesat
if (r != -ENOSYS || flags) return __syscall_ret(r);
long *tv=0, tmp[4];
if (times) {
int i;
tv = tmp;
for (i=0; i<2; i++) {
if (times[i].tv_nsec >= 1000000000ULL) {
if (NS_SPECIAL(times[i].tv_nsec))
return __syscall_ret(-ENOSYS);
return __syscall_ret(-EINVAL);
}
tmp[2*i+0] = times[i].tv_sec;
tmp[2*i+1] = times[i].tv_nsec / 1000;
}
}
r = __syscall(SYS_futimesat, fd, path, tv);
if (r != -ENOSYS || fd != AT_FDCWD) return __syscall_ret(r);
r = __syscall(SYS_utimes, path, tv);
#endif
return __syscall_ret(r);
}
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