static errno_t __cdecl
_int_wmktemp_s (wchar_t *d, size_t dn)
{
size_t sz;
if (!d || !dn)
{
_wmktemp (NULL);
return EINVAL;
}
sz = wcsnlen (d, dn);
if (sz >= dn || sz < 6)
{
d[0] = 0;
_wmktemp (NULL);
return EINVAL;
}
if (_wmktemp (d) != NULL)
return 0;
return errno;
}
/*
* os_mkstemp -- generate a unique temporary filename from template
*/
int
os_mkstemp(char *temp)
{
unsigned rnd;
wchar_t *utemp = util_toUTF16(temp);
if (utemp == NULL)
return -1;
wchar_t *path = _wmktemp(utemp);
if (path == NULL) {
util_free_UTF16(utemp);
return -1;
}
wchar_t *npath = Malloc(sizeof(*npath) * wcslen(path) + _MAX_FNAME);
if (npath == NULL) {
util_free_UTF16(utemp);
return -1;
}
wcscpy(npath, path);
util_free_UTF16(utemp);
/*
* Use rand_s to generate more unique tmp file name than _mktemp do.
* In case with multiple threads and multiple files even after close()
* file name conflicts occurred.
* It resolved issue with synchronous removing
* multiples files by system.
*/
rand_s(&rnd);
int ret = _snwprintf(npath + wcslen(npath), _MAX_FNAME, L"%u", rnd);
if (ret < 0)
goto out;
/*
* Use O_TEMPORARY flag to make sure the file is deleted when
* the last file descriptor is closed. Also, it prevents opening
* this file from another process.
*/
ret = _wopen(npath, O_RDWR | O_CREAT | O_EXCL | O_TEMPORARY,
S_IWRITE | S_IREAD);
out:
Free(npath);
return ret;
}
int mkstemp (char *tmp_template)
{
int fd;
gunichar2* utf16_template;
utf16_template = u8to16 (tmp_template);
fd = -1;
utf16_template = _wmktemp( utf16_template);
if (utf16_template && *utf16_template) {
/* FIXME: _O_TEMPORARY causes file to disappear on close causing a test to fail */
fd = _wopen( utf16_template, _O_BINARY | _O_CREAT /*| _O_TEMPORARY*/ | _O_RDWR | _O_EXCL, _S_IREAD | _S_IWRITE);
}
/* FIXME: this will crash if utf16_template == NULL */
sprintf (tmp_template + strlen (tmp_template) - 6, "%S", utf16_template + wcslen (utf16_template) - 6);
g_free (utf16_template);
return fd;
}
