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error: De-duplicate code creating Error objects 

Duplicated when commit 680d16d added error_set_errno(), and again when
commit 20840d4 added error_set_win32().

Make the original copy in error_set() reusable by factoring out
error_setv(), then rewrite error_set_errno() and error_set_win32() on
top of it.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Markus Armbruster 2015-06-19 13:59:47 +02:00
parent fc04a730b7
commit 552375088a
1 changed files with 25 additions and 43 deletions
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68
util/error.c
View File

@ -22,10 +22,10 @@ struct Error
Error *error_abort;
void error_set(Error **errp, ErrorClass err_class, const char *fmt, ...)
static void error_setv(Error **errp, ErrorClass err_class,
const char *fmt, va_list ap)
{
Error *err;
va_list ap;
int saved_errno = errno;
if (errp == NULL) {
@ -34,10 +34,7 @@ void error_set(Error **errp, ErrorClass err_class, const char *fmt, ...)
assert(*errp == NULL);
err = g_malloc0(sizeof(*err));
va_start(ap, fmt);
err->msg = g_strdup_vprintf(fmt, ap);
va_end(ap);
err->err_class = err_class;
if (errp == &error_abort) {
@ -50,39 +47,36 @@ void error_set(Error **errp, ErrorClass err_class, const char *fmt, ...)
errno = saved_errno;
}
void error_set(Error **errp, ErrorClass err_class, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
error_setv(errp, err_class, fmt, ap);
va_end(ap);
}
void error_set_errno(Error **errp, int os_errno, ErrorClass err_class,
const char *fmt, ...)
{
Error *err;
char *msg1;
va_list ap;
char *msg;
int saved_errno = errno;
if (errp == NULL) {
return;
}
assert(*errp == NULL);
err = g_malloc0(sizeof(*err));
va_start(ap, fmt);
msg1 = g_strdup_vprintf(fmt, ap);
if (os_errno != 0) {
err->msg = g_strdup_printf("%s: %s", msg1, strerror(os_errno));
g_free(msg1);
} else {
err->msg = msg1;
}
error_setv(errp, err_class, fmt, ap);
va_end(ap);
err->err_class = err_class;
if (errp == &error_abort) {
error_report_err(err);
abort();
if (os_errno != 0) {
msg = (*errp)->msg;
(*errp)->msg = g_strdup_printf("%s: %s", msg, strerror(os_errno));
g_free(msg);
}
*errp = err;
errno = saved_errno;
}
@ -96,37 +90,25 @@ void error_setg_file_open(Error **errp, int os_errno, const char *filename)
void error_set_win32(Error **errp, int win32_err, ErrorClass err_class,
const char *fmt, ...)
{
Error *err;
char *msg1;
va_list ap;
char *msg1, *msg2;
if (errp == NULL) {
return;
}
assert(*errp == NULL);
err = g_malloc0(sizeof(*err));
va_start(ap, fmt);
msg1 = g_strdup_vprintf(fmt, ap);
error_setv(errp, err_class, fmt, ap);
va_end(ap);
if (win32_err != 0) {
char *msg2 = g_win32_error_message(win32_err);
err->msg = g_strdup_printf("%s: %s (error: %x)", msg1, msg2,
(unsigned)win32_err);
msg1 = (*errp)->msg;
msg2 = g_win32_error_message(win32_err);
(*errp)->msg = g_strdup_printf("%s: %s (error: %x)", msg1, msg2,
(unsigned)win32_err);
g_free(msg2);
g_free(msg1);
} else {
err->msg = msg1;
}
va_end(ap);
err->err_class = err_class;
if (errp == &error_abort) {
error_report_err(err);
abort();
}
*errp = err;
}
#endif