libgloss/arc/hl/hl_unlink.c

   1 /*
   2  * hl_unlink.c -- provide _unlink().
   3  *
   4  * Copyright (c) 2024 Synopsys Inc.
   5  *
   6  * The authors hereby grant permission to use, copy, modify, distribute,
   7  * and license this software and its documentation for any purpose, provided
   8  * that existing copyright notices are retained in all copies and that this
   9  * notice is included verbatim in any distributions. No written agreement,
  10  * license, or royalty fee is required for any of the authorized uses.
  11  * Modifications to this software may be copyrighted by their authors
  12  * and need not follow the licensing terms described here, provided that
  13  * the new terms are clearly indicated on the first page of each file where
  14  * they apply.
  15  *
  16  */
  17
  18 #include <errno.h>
  19 #include <stdint.h>
  20 #include <unistd.h>
  21
  22 #include "hl_toolchain.h"
  23 #include "hl_api.h"
  24
  25
  26 /* Unlink host file.  Implements HL_SYSCALL_UNLINK.  */
  27 static __always_inline int
  28 _hl_unlink (const char *path)
  29 {
  30   int32_t ret;
  31   uint32_t host_errno;
  32   volatile __uncached char *p;
  33
  34   p = _hl_message (HL_SYSCALL_UNLINK, "s:ii",
  35                    path,                        /* s */
  36                    (uint32_t *) &ret,           /* :i */
  37                    (uint32_t *) &host_errno     /* :i */);
  38
  39   if (p == NULL)
  40     {
  41       errno = ETIMEDOUT;
  42       ret = -1;
  43     }
  44   else if (ret < 0)
  45     {
  46       errno = host_errno;
  47       ret = -1;
  48     }
  49
  50   _hl_delete ();
  51
  52   return ret;
  53 }
  54
  55 int
  56 _unlink (const char *path)
  57 {
  58   return _hl_unlink (path);
  59 }