src/stat/fstat.c

   1 #include <sys/stat.h>
   2 #include <errno.h>
   3 #include <fcntl.h>
   4 #include "syscall.h"
   5 #include "libc.h"
   6
   7 void __procfdname(char *, unsigned);
   8
   9 int fstat(int fd, struct stat *st)
  10 {
  11         int ret = __syscall(SYS_fstat, fd, st);
  12         if (ret != -EBADF || __syscall(SYS_fcntl, fd, F_GETFD) < 0)
  13                 return __syscall_ret(ret);
  14
  15         char buf[15+3*sizeof(int)];
  16         __procfdname(buf, fd);
  17 #ifdef SYS_stat
  18         return syscall(SYS_stat, buf, st);
  19 #else
  20         return syscall(SYS_fstatat, AT_FDCWD, buf, st, 0);
  21 #endif
  22 }
  23
  24 LFS64(fstat);