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

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