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glib: add compatibility implementation for g_dir_make_tmp() 

We're going to make use of g_dir_make_tmp() in test-logging. Provide a
compatibility implementation of it for glib < 2.30.

May behave differently in some edge cases (e.g. pattern only at the
end of the template, the file name is not part of the error message),
but good enough in practice.

Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com>
Message-id: 1471545963-11720-2-git-send-email-silbe@linux.vnet.ibm.com
[PMM: removed variable "template" which caused compilation failures
 when C++ files include glib-compat.h]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Sascha Silbe 2016-08-18 20:46:02 +02:00 committed by Peter Maydell
parent 60c6b790fc
commit 5045570009
1 changed files with 20 additions and 0 deletions
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20
include/glib-compat.h
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@ -48,6 +48,26 @@ static inline gint64 qemu_g_get_monotonic_time(void)
gint g_poll_fixed(GPollFD *fds, guint nfds, gint timeout);
#endif
#if !GLIB_CHECK_VERSION(2, 30, 0)
/* Not a 100% compatible implementation, but good enough for most
* cases. Placeholders are only supported at the end of the
* template. */
static inline gchar *qemu_g_dir_make_tmp(gchar const *tmpl, GError **error)
{
gchar *path = g_build_filename(g_get_tmp_dir(), tmpl ?: ".XXXXXX", NULL);
if (mkdtemp(path) != NULL) {
return path;
}
/* Error occurred, clean up. */
g_set_error(error, G_FILE_ERROR, g_file_error_from_errno(errno),
"mkdtemp() failed");
g_free(path);
return NULL;
}
#define g_dir_make_tmp(tmpl, error) qemu_g_dir_make_tmp(tmpl, error)
#endif /* glib 2.30 */
#if !GLIB_CHECK_VERSION(2, 31, 0)
/* before glib-2.31, GMutex and GCond was dynamic-only (there was a separate
* GStaticMutex, but it didn't work with condition variables).