xref: /qemu/tests/qtest/hd-geo-test.c (revision 49f95221)
1 /*
2  * Hard disk geometry test cases.
3  *
4  * Copyright (c) 2012 Red Hat Inc.
5  *
6  * Authors:
7  *  Markus Armbruster <armbru@redhat.com>,
8  *
9  * This work is licensed under the terms of the GNU GPL, version 2 or later.
10  * See the COPYING file in the top-level directory.
11  */
12 
13 /*
14  * Covers only IDE and tests only CMOS contents.  Better than nothing.
15  * Improvements welcome.
16  */
17 
18 #include "qemu/osdep.h"
19 #include "qemu/bswap.h"
20 #include "qapi/qmp/qlist.h"
21 #include "libqos/libqtest.h"
22 #include "libqos/fw_cfg.h"
23 #include "libqos/libqos.h"
24 #include "standard-headers/linux/qemu_fw_cfg.h"
25 
26 #define ARGV_SIZE 256
27 
28 static char *create_test_img(int secs)
29 {
30     char *template = strdup("/tmp/qtest.XXXXXX");
31     int fd, ret;
32 
33     fd = mkstemp(template);
34     g_assert(fd >= 0);
35     ret = ftruncate(fd, (off_t)secs * 512);
36     close(fd);
37 
38     if (ret) {
39         free(template);
40         template = NULL;
41     }
42 
43     return template;
44 }
45 
46 typedef struct {
47     int cyls, heads, secs, trans;
48 } CHST;
49 
50 typedef enum {
51     mbr_blank, mbr_lba, mbr_chs,
52     mbr_last
53 } MBRcontents;
54 
55 typedef enum {
56     /* order is relevant */
57     backend_small, backend_large, backend_empty,
58     backend_last
59 } Backend;
60 
61 static const int img_secs[backend_last] = {
62     [backend_small] = 61440,
63     [backend_large] = 8388608,
64     [backend_empty] = -1,
65 };
66 
67 static const CHST hd_chst[backend_last][mbr_last] = {
68     [backend_small] = {
69         [mbr_blank] = { 60, 16, 63, 0 },
70         [mbr_lba]   = { 60, 16, 63, 2 },
71         [mbr_chs]   = { 60, 16, 63, 0 }
72     },
73     [backend_large] = {
74         [mbr_blank] = { 8322, 16, 63, 1 },
75         [mbr_lba]   = { 8322, 16, 63, 1 },
76         [mbr_chs]   = { 8322, 16, 63, 0 }
77     },
78 };
79 
80 static char *img_file_name[backend_last];
81 
82 static const CHST *cur_ide[4];
83 
84 static bool is_hd(const CHST *expected_chst)
85 {
86     return expected_chst && expected_chst->cyls;
87 }
88 
89 static void test_cmos_byte(QTestState *qts, int reg, int expected)
90 {
91     enum { cmos_base = 0x70 };
92     int actual;
93 
94     qtest_outb(qts, cmos_base + 0, reg);
95     actual = qtest_inb(qts, cmos_base + 1);
96     g_assert(actual == expected);
97 }
98 
99 static void test_cmos_bytes(QTestState *qts, int reg0, int n,
100                             uint8_t expected[])
101 {
102     int i;
103 
104     for (i = 0; i < 9; i++) {
105         test_cmos_byte(qts, reg0 + i, expected[i]);
106     }
107 }
108 
109 static void test_cmos_disk_data(QTestState *qts)
110 {
111     test_cmos_byte(qts, 0x12,
112                    (is_hd(cur_ide[0]) ? 0xf0 : 0) |
113                    (is_hd(cur_ide[1]) ? 0x0f : 0));
114 }
115 
116 static void test_cmos_drive_cyl(QTestState *qts, int reg0,
117                                 const CHST *expected_chst)
118 {
119     if (is_hd(expected_chst)) {
120         int c = expected_chst->cyls;
121         int h = expected_chst->heads;
122         int s = expected_chst->secs;
123         uint8_t expected_bytes[9] = {
124             c & 0xff, c >> 8, h, 0xff, 0xff, 0xc0 | ((h > 8) << 3),
125             c & 0xff, c >> 8, s
126         };
127         test_cmos_bytes(qts, reg0, 9, expected_bytes);
128     } else {
129         int i;
130 
131         for (i = 0; i < 9; i++) {
132             test_cmos_byte(qts, reg0 + i, 0);
133         }
134     }
135 }
136 
137 static void test_cmos_drive1(QTestState *qts)
138 {
139     test_cmos_byte(qts, 0x19, is_hd(cur_ide[0]) ? 47 : 0);
140     test_cmos_drive_cyl(qts, 0x1b, cur_ide[0]);
141 }
142 
143 static void test_cmos_drive2(QTestState *qts)
144 {
145     test_cmos_byte(qts, 0x1a, is_hd(cur_ide[1]) ? 47 : 0);
146     test_cmos_drive_cyl(qts, 0x24, cur_ide[1]);
147 }
148 
149 static void test_cmos_disktransflag(QTestState *qts)
150 {
151     int val, i;
152 
153     val = 0;
154     for (i = 0; i < ARRAY_SIZE(cur_ide); i++) {
155         if (is_hd(cur_ide[i])) {
156             val |= cur_ide[i]->trans << (2 * i);
157         }
158     }
159     test_cmos_byte(qts, 0x39, val);
160 }
161 
162 static void test_cmos(QTestState *qts)
163 {
164     test_cmos_disk_data(qts);
165     test_cmos_drive1(qts);
166     test_cmos_drive2(qts);
167     test_cmos_disktransflag(qts);
168 }
169 
170 static int append_arg(int argc, char *argv[], int argv_sz, char *arg)
171 {
172     g_assert(argc + 1 < argv_sz);
173     argv[argc++] = arg;
174     argv[argc] = NULL;
175     return argc;
176 }
177 
178 static int setup_common(char *argv[], int argv_sz)
179 {
180     int new_argc;
181     memset(cur_ide, 0, sizeof(cur_ide));
182     new_argc = append_arg(0, argv, argv_sz,
183                           g_strdup("-nodefaults"));
184     new_argc = append_arg(new_argc, argv, argv_sz,
185                           g_strdup("-machine"));
186     new_argc = append_arg(new_argc, argv, argv_sz,
187                           g_strdup("pc"));
188     return new_argc;
189 }
190 
191 static void setup_mbr(int img_idx, MBRcontents mbr)
192 {
193     static const uint8_t part_lba[16] = {
194         /* chs 0,1,1 (lba 63) to chs 0,127,63 (8001 sectors) */
195         0x80, 1, 1, 0, 6, 127, 63, 0, 63, 0, 0, 0, 0x41, 0x1F, 0, 0,
196     };
197     static const uint8_t part_chs[16] = {
198         /* chs 0,1,1 (lba 63) to chs 7,15,63 (8001 sectors) */
199         0x80, 1, 1, 0, 6,  15, 63, 7, 63, 0, 0, 0, 0x41, 0x1F, 0, 0,
200     };
201     uint8_t buf[512];
202     int fd, ret;
203 
204     memset(buf, 0, sizeof(buf));
205 
206     if (mbr != mbr_blank) {
207         buf[0x1fe] = 0x55;
208         buf[0x1ff] = 0xAA;
209         memcpy(buf + 0x1BE, mbr == mbr_lba ? part_lba : part_chs, 16);
210     }
211 
212     fd = open(img_file_name[img_idx], O_WRONLY);
213     g_assert(fd >= 0);
214     ret = write(fd, buf, sizeof(buf));
215     g_assert(ret == sizeof(buf));
216     close(fd);
217 }
218 
219 static int setup_ide(int argc, char *argv[], int argv_sz,
220                      int ide_idx, const char *dev, int img_idx,
221                      MBRcontents mbr)
222 {
223     char *s1, *s2, *s3;
224 
225     s1 = g_strdup_printf("-drive id=drive%d,if=%s",
226                          ide_idx, dev ? "none" : "ide");
227     s2 = dev ? g_strdup("") : g_strdup_printf(",index=%d", ide_idx);
228 
229     if (img_secs[img_idx] >= 0) {
230         setup_mbr(img_idx, mbr);
231         s3 = g_strdup_printf(",format=raw,file=%s", img_file_name[img_idx]);
232     } else {
233         s3 = g_strdup(",media=cdrom");
234     }
235     argc = append_arg(argc, argv, argv_sz,
236                       g_strdup_printf("%s%s%s", s1, s2, s3));
237     g_free(s1);
238     g_free(s2);
239     g_free(s3);
240 
241     if (dev) {
242         argc = append_arg(argc, argv, argv_sz,
243                           g_strdup_printf("-device %s,drive=drive%d,"
244                                           "bus=ide.%d,unit=%d",
245                                           dev, ide_idx,
246                                           ide_idx / 2, ide_idx % 2));
247     }
248     return argc;
249 }
250 
251 /*
252  * Test case: no IDE devices
253  */
254 static void test_ide_none(void)
255 {
256     char **argv = g_new0(char *, ARGV_SIZE);
257     char *args;
258     QTestState *qts;
259 
260     setup_common(argv, ARGV_SIZE);
261     args = g_strjoinv(" ", argv);
262     qts = qtest_init(args);
263     g_strfreev(argv);
264     g_free(args);
265     test_cmos(qts);
266     qtest_quit(qts);
267 }
268 
269 static void test_ide_mbr(bool use_device, MBRcontents mbr)
270 {
271     char **argv = g_new0(char *, ARGV_SIZE);
272     char *args;
273     int argc;
274     Backend i;
275     const char *dev;
276     QTestState *qts;
277 
278     argc = setup_common(argv, ARGV_SIZE);
279     for (i = 0; i < backend_last; i++) {
280         cur_ide[i] = &hd_chst[i][mbr];
281         dev = use_device ? (is_hd(cur_ide[i]) ? "ide-hd" : "ide-cd") : NULL;
282         argc = setup_ide(argc, argv, ARGV_SIZE, i, dev, i, mbr);
283     }
284     args = g_strjoinv(" ", argv);
285     qts = qtest_init(args);
286     g_strfreev(argv);
287     g_free(args);
288     test_cmos(qts);
289     qtest_quit(qts);
290 }
291 
292 /*
293  * Test case: IDE devices (if=ide) with blank MBRs
294  */
295 static void test_ide_drive_mbr_blank(void)
296 {
297     test_ide_mbr(false, mbr_blank);
298 }
299 
300 /*
301  * Test case: IDE devices (if=ide) with MBRs indicating LBA is in use
302  */
303 static void test_ide_drive_mbr_lba(void)
304 {
305     test_ide_mbr(false, mbr_lba);
306 }
307 
308 /*
309  * Test case: IDE devices (if=ide) with MBRs indicating CHS is in use
310  */
311 static void test_ide_drive_mbr_chs(void)
312 {
313     test_ide_mbr(false, mbr_chs);
314 }
315 
316 /*
317  * Test case: IDE devices (if=none) with blank MBRs
318  */
319 static void test_ide_device_mbr_blank(void)
320 {
321     test_ide_mbr(true, mbr_blank);
322 }
323 
324 /*
325  * Test case: IDE devices (if=none) with MBRs indicating LBA is in use
326  */
327 static void test_ide_device_mbr_lba(void)
328 {
329     test_ide_mbr(true, mbr_lba);
330 }
331 
332 /*
333  * Test case: IDE devices (if=none) with MBRs indicating CHS is in use
334  */
335 static void test_ide_device_mbr_chs(void)
336 {
337     test_ide_mbr(true, mbr_chs);
338 }
339 
340 static void test_ide_drive_user(const char *dev, bool trans)
341 {
342     char **argv = g_new0(char *, ARGV_SIZE);
343     char *args, *opts;
344     int argc;
345     int secs = img_secs[backend_small];
346     const CHST expected_chst = { secs / (4 * 32) , 4, 32, trans };
347     QTestState *qts;
348 
349     argc = setup_common(argv, ARGV_SIZE);
350     opts = g_strdup_printf("%s,%scyls=%d,heads=%d,secs=%d",
351                            dev, trans ? "bios-chs-trans=lba," : "",
352                            expected_chst.cyls, expected_chst.heads,
353                            expected_chst.secs);
354     cur_ide[0] = &expected_chst;
355     argc = setup_ide(argc, argv, ARGV_SIZE, 0, opts, backend_small, mbr_chs);
356     g_free(opts);
357     args = g_strjoinv(" ", argv);
358     qts = qtest_init(args);
359     g_strfreev(argv);
360     g_free(args);
361     test_cmos(qts);
362     qtest_quit(qts);
363 }
364 
365 /*
366  * Test case: IDE device (if=none) with explicit CHS
367  */
368 static void test_ide_device_user_chs(void)
369 {
370     test_ide_drive_user("ide-hd", false);
371 }
372 
373 /*
374  * Test case: IDE device (if=none) with explicit CHS and translation
375  */
376 static void test_ide_device_user_chst(void)
377 {
378     test_ide_drive_user("ide-hd", true);
379 }
380 
381 /*
382  * Test case: IDE devices (if=ide), but use index=0 for CD-ROM
383  */
384 static void test_ide_drive_cd_0(void)
385 {
386     char **argv = g_new0(char *, ARGV_SIZE);
387     char *args;
388     int argc, ide_idx;
389     Backend i;
390     QTestState *qts;
391 
392     argc = setup_common(argv, ARGV_SIZE);
393     for (i = 0; i <= backend_empty; i++) {
394         ide_idx = backend_empty - i;
395         cur_ide[ide_idx] = &hd_chst[i][mbr_blank];
396         argc = setup_ide(argc, argv, ARGV_SIZE, ide_idx, NULL, i, mbr_blank);
397     }
398     args = g_strjoinv(" ", argv);
399     qts = qtest_init(args);
400     g_strfreev(argv);
401     g_free(args);
402     test_cmos(qts);
403     qtest_quit(qts);
404 }
405 
406 typedef struct {
407     bool active;
408     uint32_t head;
409     uint32_t sector;
410     uint32_t cyl;
411     uint32_t end_head;
412     uint32_t end_sector;
413     uint32_t end_cyl;
414     uint32_t start_sect;
415     uint32_t nr_sects;
416 } MBRpartitions[4];
417 
418 static MBRpartitions empty_mbr = { {false, 0, 0, 0, 0, 0, 0, 0, 0},
419                                    {false, 0, 0, 0, 0, 0, 0, 0, 0},
420                                    {false, 0, 0, 0, 0, 0, 0, 0, 0},
421                                    {false, 0, 0, 0, 0, 0, 0, 0, 0} };
422 
423 static char *create_qcow2_with_mbr(MBRpartitions mbr, uint64_t sectors)
424 {
425     const char *template = "/tmp/qtest.XXXXXX";
426     char *raw_path = strdup(template);
427     char *qcow2_path = strdup(template);
428     char cmd[100 + 2 * PATH_MAX];
429     uint8_t buf[512] = {};
430     int i, ret, fd, offset;
431     uint64_t qcow2_size = sectors * 512;
432     uint8_t status, parttype, head, sector, cyl;
433     char *qemu_img_path;
434     char *qemu_img_abs_path;
435 
436     offset = 0xbe;
437 
438     for (i = 0; i < 4; i++) {
439         status = mbr[i].active ? 0x80 : 0x00;
440         g_assert(mbr[i].head < 256);
441         g_assert(mbr[i].sector < 64);
442         g_assert(mbr[i].cyl < 1024);
443         head = mbr[i].head;
444         sector = mbr[i].sector + ((mbr[i].cyl & 0x300) >> 2);
445         cyl = mbr[i].cyl & 0xff;
446 
447         buf[offset + 0x0] = status;
448         buf[offset + 0x1] = head;
449         buf[offset + 0x2] = sector;
450         buf[offset + 0x3] = cyl;
451 
452         parttype = 0;
453         g_assert(mbr[i].end_head < 256);
454         g_assert(mbr[i].end_sector < 64);
455         g_assert(mbr[i].end_cyl < 1024);
456         head = mbr[i].end_head;
457         sector = mbr[i].end_sector + ((mbr[i].end_cyl & 0x300) >> 2);
458         cyl = mbr[i].end_cyl & 0xff;
459 
460         buf[offset + 0x4] = parttype;
461         buf[offset + 0x5] = head;
462         buf[offset + 0x6] = sector;
463         buf[offset + 0x7] = cyl;
464 
465         stl_le_p(&buf[offset + 0x8], mbr[i].start_sect);
466         stl_le_p(&buf[offset + 0xc], mbr[i].nr_sects);
467 
468         offset += 0x10;
469     }
470 
471     fd = mkstemp(raw_path);
472     g_assert(fd >= 0);
473     close(fd);
474 
475     fd = open(raw_path, O_WRONLY);
476     g_assert(fd >= 0);
477     ret = write(fd, buf, sizeof(buf));
478     g_assert(ret == sizeof(buf));
479     close(fd);
480 
481     fd = mkstemp(qcow2_path);
482     g_assert(fd >= 0);
483     close(fd);
484 
485     qemu_img_path = getenv("QTEST_QEMU_IMG");
486     g_assert(qemu_img_path);
487     qemu_img_abs_path = realpath(qemu_img_path, NULL);
488     g_assert(qemu_img_abs_path);
489 
490     ret = snprintf(cmd, sizeof(cmd),
491                    "%s convert -f raw -O qcow2 %s %s > /dev/null",
492                    qemu_img_abs_path,
493                    raw_path, qcow2_path);
494     g_assert((0 < ret) && (ret <= sizeof(cmd)));
495     ret = system(cmd);
496     g_assert(ret == 0);
497 
498     ret = snprintf(cmd, sizeof(cmd),
499                    "%s resize %s %" PRIu64 " > /dev/null",
500                    qemu_img_abs_path,
501                    qcow2_path, qcow2_size);
502     g_assert((0 < ret) && (ret <= sizeof(cmd)));
503     ret = system(cmd);
504     g_assert(ret == 0);
505 
506     free(qemu_img_abs_path);
507 
508     unlink(raw_path);
509     free(raw_path);
510 
511     return qcow2_path;
512 }
513 
514 #define BIOS_GEOMETRY_MAX_SIZE 10000
515 
516 typedef struct {
517     uint32_t c;
518     uint32_t h;
519     uint32_t s;
520 } CHS;
521 
522 typedef struct {
523     const char *dev_path;
524     CHS chs;
525 } CHSResult;
526 
527 static void read_bootdevices(QFWCFG *fw_cfg, CHSResult expected[])
528 {
529     char *buf = g_malloc0(BIOS_GEOMETRY_MAX_SIZE);
530     char *cur;
531     GList *results = NULL, *cur_result;
532     CHSResult *r;
533     int i;
534     int res;
535     bool found;
536 
537     qfw_cfg_get_file(fw_cfg, "bios-geometry", buf, BIOS_GEOMETRY_MAX_SIZE);
538 
539     for (cur = buf; *cur; cur++) {
540         if (*cur == '\n') {
541             *cur = '\0';
542         }
543     }
544     cur = buf;
545 
546     while (strlen(cur)) {
547 
548         r = g_malloc0(sizeof(*r));
549         r->dev_path = g_malloc0(strlen(cur) + 1);
550         res = sscanf(cur, "%s %" PRIu32 " %" PRIu32 " %" PRIu32,
551                      (char *)r->dev_path,
552                      &(r->chs.c), &(r->chs.h), &(r->chs.s));
553 
554         g_assert(res == 4);
555 
556         results = g_list_prepend(results, r);
557 
558         cur += strlen(cur) + 1;
559     }
560 
561     i = 0;
562 
563     while (expected[i].dev_path) {
564         found = false;
565         cur_result = results;
566         while (cur_result) {
567             r = cur_result->data;
568             if (!strcmp(r->dev_path, expected[i].dev_path) &&
569                 !memcmp(&(r->chs), &(expected[i].chs), sizeof(r->chs))) {
570                 found = true;
571                 break;
572             }
573             cur_result = g_list_next(cur_result);
574         }
575         g_assert(found);
576         g_free((char *)((CHSResult *)cur_result->data)->dev_path);
577         g_free(cur_result->data);
578         results = g_list_delete_link(results, cur_result);
579         i++;
580     }
581 
582     g_assert(results == NULL);
583 
584     g_free(buf);
585 }
586 
587 #define MAX_DRIVES 30
588 
589 typedef struct {
590     char **argv;
591     int argc;
592     char **drives;
593     int n_drives;
594     int n_scsi_disks;
595     int n_scsi_controllers;
596     int n_virtio_disks;
597 } TestArgs;
598 
599 static TestArgs *create_args(void)
600 {
601     TestArgs *args = g_malloc0(sizeof(*args));
602     args->argv = g_new0(char *, ARGV_SIZE);
603     args->argc = append_arg(args->argc, args->argv,
604                             ARGV_SIZE, g_strdup("-nodefaults"));
605     args->drives = g_new0(char *, MAX_DRIVES);
606     return args;
607 }
608 
609 static void add_drive_with_mbr(TestArgs *args,
610                                MBRpartitions mbr, uint64_t sectors)
611 {
612     char *img_file_name;
613     char part[300];
614     int ret;
615 
616     g_assert(args->n_drives < MAX_DRIVES);
617 
618     img_file_name = create_qcow2_with_mbr(mbr, sectors);
619 
620     args->drives[args->n_drives] = img_file_name;
621     ret = snprintf(part, sizeof(part),
622                    "-drive file=%s,if=none,format=qcow2,id=disk%d",
623                    img_file_name, args->n_drives);
624     g_assert((0 < ret) && (ret <= sizeof(part)));
625     args->argc = append_arg(args->argc, args->argv, ARGV_SIZE, g_strdup(part));
626     args->n_drives++;
627 }
628 
629 static void add_ide_disk(TestArgs *args,
630                          int drive_idx, int bus, int unit, int c, int h, int s)
631 {
632     char part[300];
633     int ret;
634 
635     ret = snprintf(part, sizeof(part),
636                    "-device ide-hd,drive=disk%d,bus=ide.%d,unit=%d,"
637                    "lcyls=%d,lheads=%d,lsecs=%d",
638                    drive_idx, bus, unit, c, h, s);
639     g_assert((0 < ret) && (ret <= sizeof(part)));
640     args->argc = append_arg(args->argc, args->argv, ARGV_SIZE, g_strdup(part));
641 }
642 
643 static void add_scsi_controller(TestArgs *args,
644                                 const char *type,
645                                 const char *bus,
646                                 int addr)
647 {
648     char part[300];
649     int ret;
650 
651     ret = snprintf(part, sizeof(part),
652                    "-device %s,id=scsi%d,bus=%s,addr=%d",
653                    type, args->n_scsi_controllers, bus, addr);
654     g_assert((0 < ret) && (ret <= sizeof(part)));
655     args->argc = append_arg(args->argc, args->argv, ARGV_SIZE, g_strdup(part));
656     args->n_scsi_controllers++;
657 }
658 
659 static void add_scsi_disk(TestArgs *args,
660                           int drive_idx, int bus,
661                           int channel, int scsi_id, int lun,
662                           int c, int h, int s)
663 {
664     char part[300];
665     int ret;
666 
667     ret = snprintf(part, sizeof(part),
668                    "-device scsi-hd,id=scsi-disk%d,drive=disk%d,"
669                    "bus=scsi%d.0,"
670                    "channel=%d,scsi-id=%d,lun=%d,"
671                    "lcyls=%d,lheads=%d,lsecs=%d",
672                    args->n_scsi_disks, drive_idx, bus, channel, scsi_id, lun,
673                    c, h, s);
674     g_assert((0 < ret) && (ret <= sizeof(part)));
675     args->argc = append_arg(args->argc, args->argv, ARGV_SIZE, g_strdup(part));
676     args->n_scsi_disks++;
677 }
678 
679 static void add_virtio_disk(TestArgs *args,
680                             int drive_idx, const char *bus, int addr,
681                             int c, int h, int s)
682 {
683     char part[300];
684     int ret;
685 
686     ret = snprintf(part, sizeof(part),
687                    "-device virtio-blk-pci,id=virtio-disk%d,"
688                    "drive=disk%d,bus=%s,addr=%d,"
689                    "lcyls=%d,lheads=%d,lsecs=%d",
690                    args->n_virtio_disks, drive_idx, bus, addr, c, h, s);
691     g_assert((0 < ret) && (ret <= sizeof(part)));
692     args->argc = append_arg(args->argc, args->argv, ARGV_SIZE, g_strdup(part));
693     args->n_virtio_disks++;
694 }
695 
696 static void test_override(TestArgs *args, CHSResult expected[])
697 {
698     QTestState *qts;
699     char *joined_args;
700     QFWCFG *fw_cfg;
701     int i;
702 
703     joined_args = g_strjoinv(" ", args->argv);
704 
705     qts = qtest_initf("-machine pc %s", joined_args);
706     fw_cfg = pc_fw_cfg_init(qts);
707 
708     read_bootdevices(fw_cfg, expected);
709 
710     g_free(joined_args);
711     qtest_quit(qts);
712 
713     g_free(fw_cfg);
714 
715     for (i = 0; i < args->n_drives; i++) {
716         unlink(args->drives[i]);
717         free(args->drives[i]);
718     }
719     g_free(args->drives);
720     g_strfreev(args->argv);
721     g_free(args);
722 }
723 
724 static void test_override_ide(void)
725 {
726     TestArgs *args = create_args();
727     CHSResult expected[] = {
728         {"/pci@i0cf8/ide@1,1/drive@0/disk@0", {10000, 120, 30} },
729         {"/pci@i0cf8/ide@1,1/drive@0/disk@1", {9000, 120, 30} },
730         {"/pci@i0cf8/ide@1,1/drive@1/disk@0", {0, 1, 1} },
731         {"/pci@i0cf8/ide@1,1/drive@1/disk@1", {1, 0, 0} },
732         {NULL, {0, 0, 0} }
733     };
734     add_drive_with_mbr(args, empty_mbr, 1);
735     add_drive_with_mbr(args, empty_mbr, 1);
736     add_drive_with_mbr(args, empty_mbr, 1);
737     add_drive_with_mbr(args, empty_mbr, 1);
738     add_ide_disk(args, 0, 0, 0, 10000, 120, 30);
739     add_ide_disk(args, 1, 0, 1, 9000, 120, 30);
740     add_ide_disk(args, 2, 1, 0, 0, 1, 1);
741     add_ide_disk(args, 3, 1, 1, 1, 0, 0);
742     test_override(args, expected);
743 }
744 
745 static void test_override_scsi(void)
746 {
747     TestArgs *args = create_args();
748     CHSResult expected[] = {
749         {"/pci@i0cf8/scsi@3/channel@0/disk@0,0", {10000, 120, 30} },
750         {"/pci@i0cf8/scsi@3/channel@0/disk@1,0", {9000, 120, 30} },
751         {"/pci@i0cf8/scsi@3/channel@0/disk@2,0", {1, 0, 0} },
752         {"/pci@i0cf8/scsi@3/channel@0/disk@3,0", {0, 1, 0} },
753         {NULL, {0, 0, 0} }
754     };
755     add_drive_with_mbr(args, empty_mbr, 1);
756     add_drive_with_mbr(args, empty_mbr, 1);
757     add_drive_with_mbr(args, empty_mbr, 1);
758     add_drive_with_mbr(args, empty_mbr, 1);
759     add_scsi_controller(args, "lsi53c895a", "pci.0", 3);
760     add_scsi_disk(args, 0, 0, 0, 0, 0, 10000, 120, 30);
761     add_scsi_disk(args, 1, 0, 0, 1, 0, 9000, 120, 30);
762     add_scsi_disk(args, 2, 0, 0, 2, 0, 1, 0, 0);
763     add_scsi_disk(args, 3, 0, 0, 3, 0, 0, 1, 0);
764     test_override(args, expected);
765 }
766 
767 static void test_override_scsi_2_controllers(void)
768 {
769     TestArgs *args = create_args();
770     CHSResult expected[] = {
771         {"/pci@i0cf8/scsi@3/channel@0/disk@0,0", {10000, 120, 30} },
772         {"/pci@i0cf8/scsi@3/channel@0/disk@1,0", {9000, 120, 30} },
773         {"/pci@i0cf8/scsi@4/channel@0/disk@0,1", {1, 0, 0} },
774         {"/pci@i0cf8/scsi@4/channel@0/disk@1,2", {0, 1, 0} },
775         {NULL, {0, 0, 0} }
776     };
777     add_drive_with_mbr(args, empty_mbr, 1);
778     add_drive_with_mbr(args, empty_mbr, 1);
779     add_drive_with_mbr(args, empty_mbr, 1);
780     add_drive_with_mbr(args, empty_mbr, 1);
781     add_scsi_controller(args, "lsi53c895a", "pci.0", 3);
782     add_scsi_controller(args, "virtio-scsi-pci", "pci.0", 4);
783     add_scsi_disk(args, 0, 0, 0, 0, 0, 10000, 120, 30);
784     add_scsi_disk(args, 1, 0, 0, 1, 0, 9000, 120, 30);
785     add_scsi_disk(args, 2, 1, 0, 0, 1, 1, 0, 0);
786     add_scsi_disk(args, 3, 1, 0, 1, 2, 0, 1, 0);
787     test_override(args, expected);
788 }
789 
790 static void test_override_virtio_blk(void)
791 {
792     TestArgs *args = create_args();
793     CHSResult expected[] = {
794         {"/pci@i0cf8/scsi@3/disk@0,0", {10000, 120, 30} },
795         {"/pci@i0cf8/scsi@4/disk@0,0", {9000, 120, 30} },
796         {NULL, {0, 0, 0} }
797     };
798     add_drive_with_mbr(args, empty_mbr, 1);
799     add_drive_with_mbr(args, empty_mbr, 1);
800     add_virtio_disk(args, 0, "pci.0", 3, 10000, 120, 30);
801     add_virtio_disk(args, 1, "pci.0", 4, 9000, 120, 30);
802     test_override(args, expected);
803 }
804 
805 static void test_override_zero_chs(void)
806 {
807     TestArgs *args = create_args();
808     CHSResult expected[] = {
809         {NULL, {0, 0, 0} }
810     };
811     add_drive_with_mbr(args, empty_mbr, 1);
812     add_ide_disk(args, 0, 1, 1, 0, 0, 0);
813     test_override(args, expected);
814 }
815 
816 static void test_override_scsi_hot_unplug(void)
817 {
818     QTestState *qts;
819     char *joined_args;
820     QFWCFG *fw_cfg;
821     QDict *response;
822     int i;
823     TestArgs *args = create_args();
824     CHSResult expected[] = {
825         {"/pci@i0cf8/scsi@2/channel@0/disk@0,0", {10000, 120, 30} },
826         {"/pci@i0cf8/scsi@2/channel@0/disk@1,0", {20, 20, 20} },
827         {NULL, {0, 0, 0} }
828     };
829     CHSResult expected2[] = {
830         {"/pci@i0cf8/scsi@2/channel@0/disk@1,0", {20, 20, 20} },
831         {NULL, {0, 0, 0} }
832     };
833     add_drive_with_mbr(args, empty_mbr, 1);
834     add_drive_with_mbr(args, empty_mbr, 1);
835     add_scsi_controller(args, "virtio-scsi-pci", "pci.0", 2);
836     add_scsi_disk(args, 0, 0, 0, 0, 0, 10000, 120, 30);
837     add_scsi_disk(args, 1, 0, 0, 1, 0, 20, 20, 20);
838 
839     joined_args = g_strjoinv(" ", args->argv);
840 
841     qts = qtest_initf("-machine pc %s", joined_args);
842     fw_cfg = pc_fw_cfg_init(qts);
843 
844     read_bootdevices(fw_cfg, expected);
845 
846     /* unplug device an restart */
847     response = qtest_qmp(qts,
848                          "{ 'execute': 'device_del',"
849                          "  'arguments': {'id': 'scsi-disk0' }}");
850     g_assert(response);
851     g_assert(!qdict_haskey(response, "error"));
852     qobject_unref(response);
853     response = qtest_qmp(qts,
854                          "{ 'execute': 'system_reset', 'arguments': { }}");
855     g_assert(response);
856     g_assert(!qdict_haskey(response, "error"));
857     qobject_unref(response);
858 
859     qtest_qmp_eventwait(qts, "RESET");
860 
861     read_bootdevices(fw_cfg, expected2);
862 
863     g_free(joined_args);
864     qtest_quit(qts);
865 
866     g_free(fw_cfg);
867 
868     for (i = 0; i < args->n_drives; i++) {
869         unlink(args->drives[i]);
870         free(args->drives[i]);
871     }
872     g_free(args->drives);
873     g_strfreev(args->argv);
874     g_free(args);
875 }
876 
877 static void test_override_virtio_hot_unplug(void)
878 {
879     QTestState *qts;
880     char *joined_args;
881     QFWCFG *fw_cfg;
882     QDict *response;
883     int i;
884     TestArgs *args = create_args();
885     CHSResult expected[] = {
886         {"/pci@i0cf8/scsi@2/disk@0,0", {10000, 120, 30} },
887         {"/pci@i0cf8/scsi@3/disk@0,0", {20, 20, 20} },
888         {NULL, {0, 0, 0} }
889     };
890     CHSResult expected2[] = {
891         {"/pci@i0cf8/scsi@3/disk@0,0", {20, 20, 20} },
892         {NULL, {0, 0, 0} }
893     };
894     add_drive_with_mbr(args, empty_mbr, 1);
895     add_drive_with_mbr(args, empty_mbr, 1);
896     add_virtio_disk(args, 0, "pci.0", 2, 10000, 120, 30);
897     add_virtio_disk(args, 1, "pci.0", 3, 20, 20, 20);
898 
899     joined_args = g_strjoinv(" ", args->argv);
900 
901     qts = qtest_initf("-machine pc %s", joined_args);
902     fw_cfg = pc_fw_cfg_init(qts);
903 
904     read_bootdevices(fw_cfg, expected);
905 
906     /* unplug device an restart */
907     response = qtest_qmp(qts,
908                          "{ 'execute': 'device_del',"
909                          "  'arguments': {'id': 'virtio-disk0' }}");
910     g_assert(response);
911     g_assert(!qdict_haskey(response, "error"));
912     qobject_unref(response);
913     response = qtest_qmp(qts,
914                          "{ 'execute': 'system_reset', 'arguments': { }}");
915     g_assert(response);
916     g_assert(!qdict_haskey(response, "error"));
917     qobject_unref(response);
918 
919     qtest_qmp_eventwait(qts, "RESET");
920 
921     read_bootdevices(fw_cfg, expected2);
922 
923     g_free(joined_args);
924     qtest_quit(qts);
925 
926     g_free(fw_cfg);
927 
928     for (i = 0; i < args->n_drives; i++) {
929         unlink(args->drives[i]);
930         free(args->drives[i]);
931     }
932     g_free(args->drives);
933     g_strfreev(args->argv);
934     g_free(args);
935 }
936 
937 int main(int argc, char **argv)
938 {
939     Backend i;
940     int ret;
941 
942     g_test_init(&argc, &argv, NULL);
943 
944     for (i = 0; i < backend_last; i++) {
945         if (img_secs[i] >= 0) {
946             img_file_name[i] = create_test_img(img_secs[i]);
947             if (!img_file_name[i]) {
948                 g_test_message("Could not create test images.");
949                 goto test_add_done;
950             }
951         } else {
952             img_file_name[i] = NULL;
953         }
954     }
955 
956     qtest_add_func("hd-geo/ide/none", test_ide_none);
957     qtest_add_func("hd-geo/ide/drive/mbr/blank", test_ide_drive_mbr_blank);
958     qtest_add_func("hd-geo/ide/drive/mbr/lba", test_ide_drive_mbr_lba);
959     qtest_add_func("hd-geo/ide/drive/mbr/chs", test_ide_drive_mbr_chs);
960     qtest_add_func("hd-geo/ide/drive/cd_0", test_ide_drive_cd_0);
961     qtest_add_func("hd-geo/ide/device/mbr/blank", test_ide_device_mbr_blank);
962     qtest_add_func("hd-geo/ide/device/mbr/lba", test_ide_device_mbr_lba);
963     qtest_add_func("hd-geo/ide/device/mbr/chs", test_ide_device_mbr_chs);
964     qtest_add_func("hd-geo/ide/device/user/chs", test_ide_device_user_chs);
965     qtest_add_func("hd-geo/ide/device/user/chst", test_ide_device_user_chst);
966     if (have_qemu_img()) {
967         qtest_add_func("hd-geo/override/ide", test_override_ide);
968         if (qtest_has_device("lsi53c895a")) {
969             qtest_add_func("hd-geo/override/scsi", test_override_scsi);
970             qtest_add_func("hd-geo/override/scsi_2_controllers",
971                            test_override_scsi_2_controllers);
972         }
973         qtest_add_func("hd-geo/override/virtio_blk", test_override_virtio_blk);
974         qtest_add_func("hd-geo/override/zero_chs", test_override_zero_chs);
975         qtest_add_func("hd-geo/override/scsi_hot_unplug",
976                        test_override_scsi_hot_unplug);
977         qtest_add_func("hd-geo/override/virtio_hot_unplug",
978                        test_override_virtio_hot_unplug);
979     } else {
980         g_test_message("QTEST_QEMU_IMG not set or qemu-img missing; "
981                        "skipping hd-geo/override/* tests");
982     }
983 
984 test_add_done:
985     ret = g_test_run();
986 
987     for (i = 0; i < backend_last; i++) {
988         if (img_file_name[i]) {
989             unlink(img_file_name[i]);
990             free(img_file_name[i]);
991         }
992     }
993 
994     return ret;
995 }
996