#include "block/qapi.h"
#include "qemu/error-report.h"
#include "qemu/main-loop.h"
+#include "qemu/option.h"
#include "qemu/timer.h"
#include "qemu/cutils.h"
qsort(cmdtab, ncmds, sizeof(*cmdtab), compare_cmdname);
}
-int qemuio_command_usage(const cmdinfo_t *ci)
+void qemuio_command_usage(const cmdinfo_t *ci)
{
printf("%s %s -- %s\n", ci->name, ci->args, ci->oneline);
- return 0;
}
static int init_check_command(BlockBackend *blk, const cmdinfo_t *ct)
char *cmd = argv[0];
if (!init_check_command(blk, ct)) {
- return 0;
+ return -EINVAL;
}
if (argc - 1 < ct->argmin || (ct->argmax != -1 && argc - 1 > ct->argmax)) {
"bad argument count %d to %s, expected between %d and %d arguments\n",
argc-1, cmd, ct->argmin, ct->argmax);
}
- return 0;
+ return -EINVAL;
}
/* Request additional permissions if necessary for this command. The caller
ret = blk_set_perm(blk, new_perm, orig_shared_perm, &local_err);
if (ret < 0) {
error_report_err(local_err);
- return 0;
+ return ret;
}
}
}
struct timeval t1, t2;
bool Cflag = false, qflag = false, vflag = false;
bool Pflag = false, sflag = false, lflag = false, bflag = false;
- int c, cnt;
+ int c, cnt, ret;
char *buf;
int64_t offset;
int64_t count;
pattern_count = cvtnum(optarg);
if (pattern_count < 0) {
print_cvtnum_err(pattern_count, optarg);
- return 0;
+ return pattern_count;
}
break;
case 'p':
Pflag = true;
pattern = parse_pattern(optarg);
if (pattern < 0) {
- return 0;
+ return -EINVAL;
}
break;
case 'q':
pattern_offset = cvtnum(optarg);
if (pattern_offset < 0) {
print_cvtnum_err(pattern_offset, optarg);
- return 0;
+ return pattern_offset;
}
break;
case 'v':
vflag = true;
break;
default:
- return qemuio_command_usage(&read_cmd);
+ qemuio_command_usage(&read_cmd);
+ return -EINVAL;
}
}
if (optind != argc - 2) {
- return qemuio_command_usage(&read_cmd);
+ qemuio_command_usage(&read_cmd);
+ return -EINVAL;
}
offset = cvtnum(argv[optind]);
if (offset < 0) {
print_cvtnum_err(offset, argv[optind]);
- return 0;
+ return offset;
}
optind++;
count = cvtnum(argv[optind]);
if (count < 0) {
print_cvtnum_err(count, argv[optind]);
- return 0;
+ return count;
} else if (count > BDRV_REQUEST_MAX_BYTES) {
printf("length cannot exceed %" PRIu64 ", given %s\n",
(uint64_t)BDRV_REQUEST_MAX_BYTES, argv[optind]);
- return 0;
+ return -EINVAL;
}
if (!Pflag && (lflag || sflag)) {
- return qemuio_command_usage(&read_cmd);
+ qemuio_command_usage(&read_cmd);
+ return -EINVAL;
}
if (!lflag) {
if ((pattern_count < 0) || (pattern_count + pattern_offset > count)) {
printf("pattern verification range exceeds end of read data\n");
- return 0;
+ return -EINVAL;
}
if (bflag) {
if (!QEMU_IS_ALIGNED(offset, BDRV_SECTOR_SIZE)) {
printf("%" PRId64 " is not a sector-aligned value for 'offset'\n",
offset);
- return 0;
+ return -EINVAL;
}
if (!QEMU_IS_ALIGNED(count, BDRV_SECTOR_SIZE)) {
printf("%"PRId64" is not a sector-aligned value for 'count'\n",
count);
- return 0;
+ return -EINVAL;
}
}
gettimeofday(&t1, NULL);
if (bflag) {
- cnt = do_load_vmstate(blk, buf, offset, count, &total);
+ ret = do_load_vmstate(blk, buf, offset, count, &total);
} else {
- cnt = do_pread(blk, buf, offset, count, &total);
+ ret = do_pread(blk, buf, offset, count, &total);
}
gettimeofday(&t2, NULL);
- if (cnt < 0) {
- printf("read failed: %s\n", strerror(-cnt));
+ if (ret < 0) {
+ printf("read failed: %s\n", strerror(-ret));
goto out;
}
+ cnt = ret;
+
+ ret = 0;
if (Pflag) {
void *cmp_buf = g_malloc(pattern_count);
printf("Pattern verification failed at offset %"
PRId64 ", %"PRId64" bytes\n",
offset + pattern_offset, pattern_count);
+ ret = -EINVAL;
}
g_free(cmp_buf);
}
out:
qemu_io_free(buf);
-
- return 0;
+ return ret;
}
static void readv_help(void)
{
struct timeval t1, t2;
bool Cflag = false, qflag = false, vflag = false;
- int c, cnt;
+ int c, cnt, ret;
char *buf;
int64_t offset;
/* Some compilers get confused and warn if this is not initialized. */
Pflag = true;
pattern = parse_pattern(optarg);
if (pattern < 0) {
- return 0;
+ return -EINVAL;
}
break;
case 'q':
vflag = true;
break;
default:
- return qemuio_command_usage(&readv_cmd);
+ qemuio_command_usage(&readv_cmd);
+ return -EINVAL;
}
}
if (optind > argc - 2) {
- return qemuio_command_usage(&readv_cmd);
+ qemuio_command_usage(&readv_cmd);
+ return -EINVAL;
}
offset = cvtnum(argv[optind]);
if (offset < 0) {
print_cvtnum_err(offset, argv[optind]);
- return 0;
+ return offset;
}
optind++;
nr_iov = argc - optind;
buf = create_iovec(blk, &qiov, &argv[optind], nr_iov, 0xab);
if (buf == NULL) {
- return 0;
+ return -EINVAL;
}
gettimeofday(&t1, NULL);
- cnt = do_aio_readv(blk, &qiov, offset, &total);
+ ret = do_aio_readv(blk, &qiov, offset, &total);
gettimeofday(&t2, NULL);
- if (cnt < 0) {
- printf("readv failed: %s\n", strerror(-cnt));
+ if (ret < 0) {
+ printf("readv failed: %s\n", strerror(-ret));
goto out;
}
+ cnt = ret;
+
+ ret = 0;
if (Pflag) {
void *cmp_buf = g_malloc(qiov.size);
if (memcmp(buf, cmp_buf, qiov.size)) {
printf("Pattern verification failed at offset %"
PRId64 ", %zd bytes\n", offset, qiov.size);
+ ret = -EINVAL;
}
g_free(cmp_buf);
}
out:
qemu_iovec_destroy(&qiov);
qemu_io_free(buf);
- return 0;
+ return ret;
}
static void write_help(void)
bool Cflag = false, qflag = false, bflag = false;
bool Pflag = false, zflag = false, cflag = false;
int flags = 0;
- int c, cnt;
+ int c, cnt, ret;
char *buf = NULL;
int64_t offset;
int64_t count;
Pflag = true;
pattern = parse_pattern(optarg);
if (pattern < 0) {
- return 0;
+ return -EINVAL;
}
break;
case 'q':
zflag = true;
break;
default:
- return qemuio_command_usage(&write_cmd);
+ qemuio_command_usage(&write_cmd);
+ return -EINVAL;
}
}
if (optind != argc - 2) {
- return qemuio_command_usage(&write_cmd);
+ qemuio_command_usage(&write_cmd);
+ return -EINVAL;
}
if (bflag && zflag) {
printf("-b and -z cannot be specified at the same time\n");
- return 0;
+ return -EINVAL;
}
if ((flags & BDRV_REQ_FUA) && (bflag || cflag)) {
printf("-f and -b or -c cannot be specified at the same time\n");
- return 0;
+ return -EINVAL;
}
if ((flags & BDRV_REQ_MAY_UNMAP) && !zflag) {
printf("-u requires -z to be specified\n");
- return 0;
+ return -EINVAL;
}
if (zflag && Pflag) {
printf("-z and -P cannot be specified at the same time\n");
- return 0;
+ return -EINVAL;
}
offset = cvtnum(argv[optind]);
if (offset < 0) {
print_cvtnum_err(offset, argv[optind]);
- return 0;
+ return offset;
}
optind++;
count = cvtnum(argv[optind]);
if (count < 0) {
print_cvtnum_err(count, argv[optind]);
- return 0;
+ return count;
} else if (count > BDRV_REQUEST_MAX_BYTES) {
printf("length cannot exceed %" PRIu64 ", given %s\n",
(uint64_t)BDRV_REQUEST_MAX_BYTES, argv[optind]);
- return 0;
+ return -EINVAL;
}
if (bflag || cflag) {
if (!QEMU_IS_ALIGNED(offset, BDRV_SECTOR_SIZE)) {
printf("%" PRId64 " is not a sector-aligned value for 'offset'\n",
offset);
- return 0;
+ return -EINVAL;
}
if (!QEMU_IS_ALIGNED(count, BDRV_SECTOR_SIZE)) {
printf("%"PRId64" is not a sector-aligned value for 'count'\n",
count);
- return 0;
+ return -EINVAL;
}
}
gettimeofday(&t1, NULL);
if (bflag) {
- cnt = do_save_vmstate(blk, buf, offset, count, &total);
+ ret = do_save_vmstate(blk, buf, offset, count, &total);
} else if (zflag) {
- cnt = do_co_pwrite_zeroes(blk, offset, count, flags, &total);
+ ret = do_co_pwrite_zeroes(blk, offset, count, flags, &total);
} else if (cflag) {
- cnt = do_write_compressed(blk, buf, offset, count, &total);
+ ret = do_write_compressed(blk, buf, offset, count, &total);
} else {
- cnt = do_pwrite(blk, buf, offset, count, flags, &total);
+ ret = do_pwrite(blk, buf, offset, count, flags, &total);
}
gettimeofday(&t2, NULL);
- if (cnt < 0) {
- printf("write failed: %s\n", strerror(-cnt));
+ if (ret < 0) {
+ printf("write failed: %s\n", strerror(-ret));
goto out;
}
+ cnt = ret;
+
+ ret = 0;
if (qflag) {
goto out;
if (!zflag) {
qemu_io_free(buf);
}
-
- return 0;
+ return ret;
}
static void
struct timeval t1, t2;
bool Cflag = false, qflag = false;
int flags = 0;
- int c, cnt;
+ int c, cnt, ret;
char *buf;
int64_t offset;
/* Some compilers get confused and warn if this is not initialized. */
case 'P':
pattern = parse_pattern(optarg);
if (pattern < 0) {
- return 0;
+ return -EINVAL;
}
break;
default:
- return qemuio_command_usage(&writev_cmd);
+ qemuio_command_usage(&writev_cmd);
+ return -EINVAL;
}
}
if (optind > argc - 2) {
- return qemuio_command_usage(&writev_cmd);
+ qemuio_command_usage(&writev_cmd);
+ return -EINVAL;
}
offset = cvtnum(argv[optind]);
if (offset < 0) {
print_cvtnum_err(offset, argv[optind]);
- return 0;
+ return offset;
}
optind++;
nr_iov = argc - optind;
buf = create_iovec(blk, &qiov, &argv[optind], nr_iov, pattern);
if (buf == NULL) {
- return 0;
+ return -EINVAL;
}
gettimeofday(&t1, NULL);
- cnt = do_aio_writev(blk, &qiov, offset, flags, &total);
+ ret = do_aio_writev(blk, &qiov, offset, flags, &total);
gettimeofday(&t2, NULL);
- if (cnt < 0) {
- printf("writev failed: %s\n", strerror(-cnt));
+ if (ret < 0) {
+ printf("writev failed: %s\n", strerror(-ret));
goto out;
}
+ cnt = ret;
+
+ ret = 0;
if (qflag) {
goto out;
out:
qemu_iovec_destroy(&qiov);
qemu_io_free(buf);
- return 0;
+ return ret;
}
struct aio_ctx {
" standard output stream (with -v option) for subsequent inspection.\n"
" The read is performed asynchronously and the aio_flush command must be\n"
" used to ensure all outstanding aio requests have been completed.\n"
+" Note that due to its asynchronous nature, this command will be\n"
+" considered successful once the request is submitted, independently\n"
+" of potential I/O errors or pattern mismatches.\n"
" -C, -- report statistics in a machine parsable format\n"
" -P, -- use a pattern to verify read data\n"
" -i, -- treat request as invalid, for exercising stats\n"
ctx->pattern = parse_pattern(optarg);
if (ctx->pattern < 0) {
g_free(ctx);
- return 0;
+ return -EINVAL;
}
break;
case 'i':
break;
default:
g_free(ctx);
- return qemuio_command_usage(&aio_read_cmd);
+ qemuio_command_usage(&aio_read_cmd);
+ return -EINVAL;
}
}
if (optind > argc - 2) {
g_free(ctx);
- return qemuio_command_usage(&aio_read_cmd);
+ qemuio_command_usage(&aio_read_cmd);
+ return -EINVAL;
}
ctx->offset = cvtnum(argv[optind]);
if (ctx->offset < 0) {
- print_cvtnum_err(ctx->offset, argv[optind]);
+ int ret = ctx->offset;
+ print_cvtnum_err(ret, argv[optind]);
g_free(ctx);
- return 0;
+ return ret;
}
optind++;
if (ctx->buf == NULL) {
block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_READ);
g_free(ctx);
- return 0;
+ return -EINVAL;
}
gettimeofday(&ctx->t1, NULL);
" filled with a set pattern (0xcdcdcdcd).\n"
" The write is performed asynchronously and the aio_flush command must be\n"
" used to ensure all outstanding aio requests have been completed.\n"
+" Note that due to its asynchronous nature, this command will be\n"
+" considered successful once the request is submitted, independently\n"
+" of potential I/O errors or pattern mismatches.\n"
" -P, -- use different pattern to fill file\n"
" -C, -- report statistics in a machine parsable format\n"
" -f, -- use Force Unit Access semantics\n"
pattern = parse_pattern(optarg);
if (pattern < 0) {
g_free(ctx);
- return 0;
+ return -EINVAL;
}
break;
case 'i':
break;
default:
g_free(ctx);
- return qemuio_command_usage(&aio_write_cmd);
+ qemuio_command_usage(&aio_write_cmd);
+ return -EINVAL;
}
}
if (optind > argc - 2) {
g_free(ctx);
- return qemuio_command_usage(&aio_write_cmd);
+ qemuio_command_usage(&aio_write_cmd);
+ return -EINVAL;
}
if (ctx->zflag && optind != argc - 2) {
printf("-z supports only a single length parameter\n");
g_free(ctx);
- return 0;
+ return -EINVAL;
}
if ((flags & BDRV_REQ_MAY_UNMAP) && !ctx->zflag) {
printf("-u requires -z to be specified\n");
g_free(ctx);
- return 0;
+ return -EINVAL;
}
if (ctx->zflag && ctx->Pflag) {
printf("-z and -P cannot be specified at the same time\n");
g_free(ctx);
- return 0;
+ return -EINVAL;
}
ctx->offset = cvtnum(argv[optind]);
if (ctx->offset < 0) {
- print_cvtnum_err(ctx->offset, argv[optind]);
+ int ret = ctx->offset;
+ print_cvtnum_err(ret, argv[optind]);
g_free(ctx);
- return 0;
+ return ret;
}
optind++;
if (count < 0) {
print_cvtnum_err(count, argv[optind]);
g_free(ctx);
- return 0;
+ return count;
}
ctx->qiov.size = count;
if (ctx->buf == NULL) {
block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_WRITE);
g_free(ctx);
- return 0;
+ return -EINVAL;
}
gettimeofday(&ctx->t1, NULL);
blk_aio_pwritev(blk, ctx->offset, &ctx->qiov, flags, aio_write_done,
ctx);
}
+
return 0;
}
static int flush_f(BlockBackend *blk, int argc, char **argv)
{
- blk_flush(blk);
- return 0;
+ return blk_flush(blk);
}
static const cmdinfo_t flush_cmd = {
offset = cvtnum(argv[1]);
if (offset < 0) {
print_cvtnum_err(offset, argv[1]);
- return 0;
+ return offset;
}
ret = blk_truncate(blk, offset, PREALLOC_MODE_OFF, &local_err);
if (ret < 0) {
error_report_err(local_err);
- return 0;
+ return ret;
}
return 0;
size = blk_getlength(blk);
if (size < 0) {
printf("getlength: %s\n", strerror(-size));
- return 0;
+ return size;
}
cvtstr(size, s1, sizeof(s1));
ret = bdrv_get_info(bs, &bdi);
if (ret) {
- return 0;
+ return ret;
}
cvtstr(bdi.cluster_size, s1, sizeof(s1));
qflag = true;
break;
default:
- return qemuio_command_usage(&discard_cmd);
+ qemuio_command_usage(&discard_cmd);
+ return -EINVAL;
}
}
if (optind != argc - 2) {
- return qemuio_command_usage(&discard_cmd);
+ qemuio_command_usage(&discard_cmd);
+ return -EINVAL;
}
offset = cvtnum(argv[optind]);
if (offset < 0) {
print_cvtnum_err(offset, argv[optind]);
- return 0;
+ return offset;
}
optind++;
bytes = cvtnum(argv[optind]);
if (bytes < 0) {
print_cvtnum_err(bytes, argv[optind]);
- return 0;
+ return bytes;
} else if (bytes >> BDRV_SECTOR_BITS > BDRV_REQUEST_MAX_SECTORS) {
printf("length cannot exceed %"PRIu64", given %s\n",
(uint64_t)BDRV_REQUEST_MAX_SECTORS << BDRV_SECTOR_BITS,
argv[optind]);
- return 0;
+ return -EINVAL;
}
gettimeofday(&t1, NULL);
if (ret < 0) {
printf("discard failed: %s\n", strerror(-ret));
- goto out;
+ return ret;
}
/* Finally, report back -- -C gives a parsable format */
print_report("discard", &t2, offset, bytes, bytes, 1, Cflag);
}
-out:
return 0;
}
start = offset = cvtnum(argv[1]);
if (offset < 0) {
print_cvtnum_err(offset, argv[1]);
- return 0;
- } else if (!QEMU_IS_ALIGNED(offset, BDRV_SECTOR_SIZE)) {
- printf("%" PRId64 " is not a sector-aligned value for 'offset'\n",
- offset);
- return 0;
+ return offset;
}
if (argc == 3) {
count = cvtnum(argv[2]);
if (count < 0) {
print_cvtnum_err(count, argv[2]);
- return 0;
- } else if (count > INT_MAX * BDRV_SECTOR_SIZE) {
- printf("length argument cannot exceed %llu, given %s\n",
- INT_MAX * BDRV_SECTOR_SIZE, argv[2]);
- return 0;
+ return count;
}
} else {
count = BDRV_SECTOR_SIZE;
}
- if (!QEMU_IS_ALIGNED(count, BDRV_SECTOR_SIZE)) {
- printf("%" PRId64 " is not a sector-aligned value for 'count'\n",
- count);
- return 0;
- }
remaining = count;
sum_alloc = 0;
ret = bdrv_is_allocated(bs, offset, remaining, &num);
if (ret < 0) {
printf("is_allocated failed: %s\n", strerror(-ret));
- return 0;
+ return ret;
}
offset += num;
remaining -= num;
bytes = blk_getlength(blk);
if (bytes < 0) {
error_report("Failed to query image length: %s", strerror(-bytes));
- return 0;
+ return bytes;
}
while (bytes) {
ret = map_is_allocated(blk_bs(blk), offset, bytes, &num);
if (ret < 0) {
error_report("Failed to get allocation status: %s", strerror(-ret));
- return 0;
+ return ret;
} else if (!num) {
error_report("Unexpected end of image");
- return 0;
+ return -EIO;
}
retstr = ret ? " allocated" : "not allocated";
case 'c':
if (bdrv_parse_cache_mode(optarg, &flags, &writethrough) < 0) {
error_report("Invalid cache option: %s", optarg);
- return 0;
+ return -EINVAL;
}
break;
case 'o':
if (!qemu_opts_parse_noisily(&reopen_opts, optarg, 0)) {
qemu_opts_reset(&reopen_opts);
- return 0;
+ return -EINVAL;
}
break;
case 'r':
if (has_rw_option) {
error_report("Only one -r/-w option may be given");
- return 0;
+ return -EINVAL;
}
flags &= ~BDRV_O_RDWR;
has_rw_option = true;
case 'w':
if (has_rw_option) {
error_report("Only one -r/-w option may be given");
- return 0;
+ return -EINVAL;
}
flags |= BDRV_O_RDWR;
has_rw_option = true;
break;
default:
qemu_opts_reset(&reopen_opts);
- return qemuio_command_usage(&reopen_cmd);
+ qemuio_command_usage(&reopen_cmd);
+ return -EINVAL;
}
}
if (optind != argc) {
qemu_opts_reset(&reopen_opts);
- return qemuio_command_usage(&reopen_cmd);
+ qemuio_command_usage(&reopen_cmd);
+ return -EINVAL;
}
if (writethrough != blk_enable_write_cache(blk) &&
{
error_report("Cannot change cache.writeback: Device attached");
qemu_opts_reset(&reopen_opts);
- return 0;
+ return -EBUSY;
}
if (!(flags & BDRV_O_RDWR)) {
opts = qopts ? qemu_opts_to_qdict(qopts, NULL) : NULL;
qemu_opts_reset(&reopen_opts);
+ bdrv_subtree_drained_begin(bs);
brq = bdrv_reopen_queue(NULL, bs, opts, flags);
bdrv_reopen_multiple(bdrv_get_aio_context(bs), brq, &local_err);
+ bdrv_subtree_drained_end(bs);
+
if (local_err) {
error_report_err(local_err);
- } else {
- blk_set_enable_write_cache(blk, !writethrough);
+ return -EINVAL;
}
+ blk_set_enable_write_cache(blk, !writethrough);
return 0;
}
ret = bdrv_debug_breakpoint(blk_bs(blk), argv[1], argv[2]);
if (ret < 0) {
printf("Could not set breakpoint: %s\n", strerror(-ret));
+ return ret;
}
return 0;
ret = bdrv_debug_remove_breakpoint(blk_bs(blk), argv[1]);
if (ret < 0) {
printf("Could not remove breakpoint %s: %s\n", argv[1], strerror(-ret));
+ return ret;
}
return 0;
ret = bdrv_debug_resume(blk_bs(blk), argv[1]);
if (ret < 0) {
printf("Could not resume request: %s\n", strerror(-ret));
+ return ret;
}
return 0;
while (!bdrv_debug_is_suspended(blk_bs(blk), argv[1])) {
aio_poll(blk_get_aio_context(blk), true);
}
-
return 0;
}
int64_t sig = cvtnum(argv[1]);
if (sig < 0) {
print_cvtnum_err(sig, argv[1]);
- return 0;
+ return sig;
} else if (sig > NSIG) {
printf("signal argument '%s' is too large to be a valid signal\n",
argv[1]);
- return 0;
+ return -EINVAL;
}
/* Using raise() to kill this process does not necessarily flush all open
fflush(stderr);
raise(sig);
+
return 0;
}
ms = strtol(argv[1], &endptr, 0);
if (ms < 0 || *endptr != '\0') {
printf("%s is not a valid number\n", argv[1]);
- return 0;
+ return -EINVAL;
}
timer = timer_new_ns(QEMU_CLOCK_HOST, sleep_cb, &expired);
}
timer_free(timer);
-
return 0;
}
ct = find_command(argv[1]);
if (ct == NULL) {
printf("command %s not found\n", argv[1]);
- return 0;
+ return -EINVAL;
}
help_onecmd(argv[1], ct);
.oneline = "help for one or all commands",
};
-bool qemuio_command(BlockBackend *blk, const char *cmd)
+int qemuio_command(BlockBackend *blk, const char *cmd)
{
AioContext *ctx;
char *input;
const cmdinfo_t *ct;
char **v;
int c;
- bool done = false;
+ int ret = 0;
input = g_strdup(cmd);
v = breakline(input, &c);
if (ct) {
ctx = blk ? blk_get_aio_context(blk) : qemu_get_aio_context();
aio_context_acquire(ctx);
- done = command(blk, ct, c, v);
+ ret = command(blk, ct, c, v);
aio_context_release(ctx);
} else {
fprintf(stderr, "command \"%s\" not found\n", v[0]);
+ ret = -EINVAL;
}
}
g_free(input);
g_free(v);
- return done;
+ return ret;
}
static void __attribute((constructor)) init_qemuio_commands(void)
projects / mirror_qemu.git / blobdiff