toolchain/gcc/newlib/libc/reent/fstat64r.c

   1 /* Reentrant versions of fstat system call.  This implementation just
   2    calls the fstat system call.  */
   3
   4 #include <reent.h>
   5 #include <unistd.h>
   6 #include <sys/stat.h>
   7 #include <_syslist.h>
   8
   9 #ifdef __LARGE64_FILES
  10
  11 /* Some targets provides their own versions of these functions.  Those
  12    targets should define REENTRANT_SYSCALLS_PROVIDED in TARGET_CFLAGS.  */
  13
  14 #ifdef _REENT_ONLY
  15 #ifndef REENTRANT_SYSCALLS_PROVIDED
  16 #define REENTRANT_SYSCALLS_PROVIDED
  17 #endif
  18 #endif
  19
  20 #ifdef REENTRANT_SYSCALLS_PROVIDED
  21
  22 int _dummy_fstat_syscalls = 1;
  23
  24 #else
  25
  26 /* We use the errno variable used by the system dependent layer.  */
  27 #undef errno
  28 extern int errno;
  29
  30 /*
  31 FUNCTION
  32         <<_fstat64_r>>---Reentrant version of fstat64
  33
  34 INDEX
  35         _fstat64_r
  36
  37 ANSI_SYNOPSIS
  38         #include <reent.h>
  39         int _fstat64_r(struct _reent *<[ptr]>,
  40                        int <[fd]>, struct stat64 *<[pstat]>);
  41
  42 TRAD_SYNOPSIS
  43         #include <reent.h>
  44         int _fstat64_r(<[ptr]>, <[fd]>, <[pstat]>)
  45         struct _reent *<[ptr]>;
  46         int <[fd]>;
  47         struct stat *<[pstat]>;
  48
  49 DESCRIPTION
  50         This is a reentrant version of <<fstat64>>.  It
  51         takes a pointer to the global data block, which holds
  52         <<errno>>.  This function is only enabled on systems
  53         that define __LARGE64_FILES.
  54 */
  55
  56 int
  57 _DEFUN (_fstat64_r, (ptr, fd, pstat),
  58      struct _reent *ptr _AND
  59      int fd _AND
  60      struct stat64 *pstat)
  61 {
  62   int ret;
  63
  64   errno = 0;
  65   if ((ret = _fstat64 (fd, pstat)) == -1 && errno != 0)
  66     ptr->_errno = errno;
  67   return ret;
  68 }
  69
  70 #endif /* ! defined (REENTRANT_SYSCALLS_PROVIDED) */
  71
  72 #endif /* __LARGE64_FILES */