Luiz Capitulino | d5ec4f2 | 2011-06-01 12:14:49 -0500 | [diff] [blame] | 1 | /* |
| 2 | * QEMU Error Objects |
| 3 | * |
| 4 | * Copyright IBM, Corp. 2011 |
| 5 | * |
| 6 | * Authors: |
| 7 | * Anthony Liguori <aliguori@us.ibm.com> |
| 8 | * |
| 9 | * This work is licensed under the terms of the GNU LGPL, version 2. See |
| 10 | * the COPYING.LIB file in the top-level directory. |
| 11 | */ |
Stefan Weil | e4ea5e2 | 2011-06-13 23:01:53 +0200 | [diff] [blame] | 12 | |
| 13 | #include "qemu-common.h" |
Paolo Bonzini | 7b1b5d1 | 2012-12-17 18:19:43 +0100 | [diff] [blame] | 14 | #include "qapi/error.h" |
| 15 | #include "qapi/qmp/qjson.h" |
| 16 | #include "qapi/qmp/qdict.h" |
Luiz Capitulino | 13f59ae | 2012-07-27 14:09:29 -0300 | [diff] [blame] | 17 | #include "qapi-types.h" |
Paolo Bonzini | 7b1b5d1 | 2012-12-17 18:19:43 +0100 | [diff] [blame] | 18 | #include "qapi/qmp/qerror.h" |
Luiz Capitulino | d5ec4f2 | 2011-06-01 12:14:49 -0500 | [diff] [blame] | 19 | |
| 20 | struct Error |
| 21 | { |
Luiz Capitulino | d5ec4f2 | 2011-06-01 12:14:49 -0500 | [diff] [blame] | 22 | char *msg; |
Luiz Capitulino | 13f59ae | 2012-07-27 14:09:29 -0300 | [diff] [blame] | 23 | ErrorClass err_class; |
Luiz Capitulino | d5ec4f2 | 2011-06-01 12:14:49 -0500 | [diff] [blame] | 24 | }; |
| 25 | |
Luiz Capitulino | 13f59ae | 2012-07-27 14:09:29 -0300 | [diff] [blame] | 26 | void error_set(Error **errp, ErrorClass err_class, const char *fmt, ...) |
Luiz Capitulino | d5ec4f2 | 2011-06-01 12:14:49 -0500 | [diff] [blame] | 27 | { |
| 28 | Error *err; |
| 29 | va_list ap; |
| 30 | |
| 31 | if (errp == NULL) { |
| 32 | return; |
| 33 | } |
Paolo Bonzini | d195325 | 2012-07-17 16:17:04 +0200 | [diff] [blame] | 34 | assert(*errp == NULL); |
Luiz Capitulino | d5ec4f2 | 2011-06-01 12:14:49 -0500 | [diff] [blame] | 35 | |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 36 | err = g_malloc0(sizeof(*err)); |
Luiz Capitulino | d5ec4f2 | 2011-06-01 12:14:49 -0500 | [diff] [blame] | 37 | |
| 38 | va_start(ap, fmt); |
Luiz Capitulino | df1e608 | 2012-07-27 17:51:03 -0300 | [diff] [blame] | 39 | err->msg = g_strdup_vprintf(fmt, ap); |
Luiz Capitulino | d5ec4f2 | 2011-06-01 12:14:49 -0500 | [diff] [blame] | 40 | va_end(ap); |
Luiz Capitulino | 13f59ae | 2012-07-27 14:09:29 -0300 | [diff] [blame] | 41 | err->err_class = err_class; |
Luiz Capitulino | d5ec4f2 | 2011-06-01 12:14:49 -0500 | [diff] [blame] | 42 | |
| 43 | *errp = err; |
| 44 | } |
| 45 | |
Paolo Bonzini | 680d16d | 2012-10-02 09:00:45 +0200 | [diff] [blame] | 46 | void error_set_errno(Error **errp, int os_errno, ErrorClass err_class, |
| 47 | const char *fmt, ...) |
| 48 | { |
| 49 | Error *err; |
| 50 | char *msg1; |
| 51 | va_list ap; |
| 52 | |
| 53 | if (errp == NULL) { |
| 54 | return; |
| 55 | } |
| 56 | assert(*errp == NULL); |
| 57 | |
| 58 | err = g_malloc0(sizeof(*err)); |
| 59 | |
| 60 | va_start(ap, fmt); |
| 61 | msg1 = g_strdup_vprintf(fmt, ap); |
| 62 | if (os_errno != 0) { |
| 63 | err->msg = g_strdup_printf("%s: %s", msg1, strerror(os_errno)); |
| 64 | g_free(msg1); |
| 65 | } else { |
| 66 | err->msg = msg1; |
| 67 | } |
| 68 | va_end(ap); |
| 69 | err->err_class = err_class; |
| 70 | |
| 71 | *errp = err; |
| 72 | } |
| 73 | |
Luiz Capitulino | 79020cf | 2011-12-05 16:04:05 -0200 | [diff] [blame] | 74 | Error *error_copy(const Error *err) |
| 75 | { |
| 76 | Error *err_new; |
| 77 | |
| 78 | err_new = g_malloc0(sizeof(*err)); |
| 79 | err_new->msg = g_strdup(err->msg); |
Luiz Capitulino | 13f59ae | 2012-07-27 14:09:29 -0300 | [diff] [blame] | 80 | err_new->err_class = err->err_class; |
Luiz Capitulino | 79020cf | 2011-12-05 16:04:05 -0200 | [diff] [blame] | 81 | |
| 82 | return err_new; |
| 83 | } |
| 84 | |
Luiz Capitulino | d5ec4f2 | 2011-06-01 12:14:49 -0500 | [diff] [blame] | 85 | bool error_is_set(Error **errp) |
| 86 | { |
| 87 | return (errp && *errp); |
| 88 | } |
| 89 | |
Luiz Capitulino | ea25fbc | 2012-08-01 16:29:38 -0300 | [diff] [blame] | 90 | ErrorClass error_get_class(const Error *err) |
| 91 | { |
| 92 | return err->err_class; |
| 93 | } |
| 94 | |
Luiz Capitulino | d5ec4f2 | 2011-06-01 12:14:49 -0500 | [diff] [blame] | 95 | const char *error_get_pretty(Error *err) |
| 96 | { |
Luiz Capitulino | d5ec4f2 | 2011-06-01 12:14:49 -0500 | [diff] [blame] | 97 | return err->msg; |
| 98 | } |
| 99 | |
Luiz Capitulino | d5ec4f2 | 2011-06-01 12:14:49 -0500 | [diff] [blame] | 100 | void error_free(Error *err) |
| 101 | { |
| 102 | if (err) { |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 103 | g_free(err->msg); |
| 104 | g_free(err); |
Luiz Capitulino | d5ec4f2 | 2011-06-01 12:14:49 -0500 | [diff] [blame] | 105 | } |
| 106 | } |
| 107 | |
Luiz Capitulino | d5ec4f2 | 2011-06-01 12:14:49 -0500 | [diff] [blame] | 108 | void error_propagate(Error **dst_err, Error *local_err) |
| 109 | { |
Paolo Bonzini | d195325 | 2012-07-17 16:17:04 +0200 | [diff] [blame] | 110 | if (dst_err && !*dst_err) { |
Luiz Capitulino | d5ec4f2 | 2011-06-01 12:14:49 -0500 | [diff] [blame] | 111 | *dst_err = local_err; |
| 112 | } else if (local_err) { |
| 113 | error_free(local_err); |
| 114 | } |
| 115 | } |