nsz Git - musl/blob - src/stat/utimensat.c

   1 #include <sys/stat.h>
   2 #include <sys/time.h>
   3 #include <fcntl.h>
   4 #include <errno.h>
   5 #include "syscall.h"
   6
   7 int utimensat(int fd, const char *path, const struct timespec times[2], int flags)
   8 {
   9         if (times && times[0].tv_nsec==UTIME_NOW && times[1].tv_nsec==UTIME_NOW)
  10                 times = 0;
  11         int r = __syscall(SYS_utimensat, fd, path, times, flags);
  12 #ifdef SYS_futimesat
  13         if (r != -ENOSYS || flags) return __syscall_ret(r);
  14         struct timeval *tv = 0, tmp[2];
  15         if (times) {
  16                 int i;
  17                 tv = tmp;
  18                 for (i=0; i<2; i++) {
  19                         if (times[i].tv_nsec >= 1000000000ULL) {
  20                                 if (times[i].tv_nsec == UTIME_NOW
  21                                  || times[i].tv_nsec == UTIME_OMIT)
  22                                         return __syscall_ret(-ENOSYS);
  23                                 return __syscall_ret(-EINVAL);
  24                         }
  25                         tmp[i].tv_sec = times[i].tv_sec;
  26                         tmp[i].tv_usec = times[i].tv_nsec / 1000;
  27                 }
  28         }
  29
  30         r = __syscall(SYS_futimesat, fd, path, tv);
  31         if (r != -ENOSYS || fd != AT_FDCWD) return __syscall_ret(r);
  32         r = __syscall(SYS_utimes, path, tv);
  33 #endif
  34         return __syscall_ret(r);
  35 }