newlib/libc/reent/statr.c

   1 /* Reentrant versions of stat system call.  This implementation just
   2    calls the stat system call.  */
   3
   4 #include <reent.h>
   5 #include <unistd.h>
   6 #include <sys/stat.h>
   7 #include <_syslist.h>
   8
   9 /* Some targets provides their own versions of these functions.  Those
  10    targets should define REENTRANT_SYSCALLS_PROVIDED in
  11    TARGET_CFLAGS.  */
  12
  13 #ifdef _REENT_ONLY
  14 #ifndef REENTRANT_SYSCALLS_PROVIDED
  15 #define REENTRANT_SYSCALLS_PROVIDED
  16 #endif
  17 #endif
  18
  19 #ifdef REENTRANT_SYSCALLS_PROVIDED
  20
  21 int _dummy_stat_syscalls = 1;
  22
  23 #else
  24
  25 /* We use the errno variable used by the system dependent layer.  */
  26 #undef errno
  27 extern int errno;
  28
  29 /*
  30 FUNCTION
  31         <<_stat_r>>---Reentrant version of stat
  32
  33 INDEX
  34         _stat_r
  35
  36 SYNOPSIS
  37         #include <reent.h>
  38         int _stat_r(struct _reent *<[ptr]>,
  39                     const char *<[file]>, struct stat *<[pstat]>);
  40
  41 DESCRIPTION
  42         This is a reentrant version of <<stat>>.  It
  43         takes a pointer to the global data block, which holds
  44         <<errno>>.
  45 */
  46
  47 int
  48 _stat_r (struct _reent *ptr,
  49      const char *file,
  50      struct stat *pstat)
  51 {
  52   int ret;
  53
  54   errno = 0;
  55   if ((ret = _stat (file, pstat)) == -1 && errno != 0)
  56     _REENT_ERRNO(ptr) = errno;
  57   return ret;
  58 }
  59
  60 #endif /* ! defined (REENTRANT_SYSCALLS_PROVIDED) */