#include <libgen.h>
#include "qemu-common.h"
-#include "block_int.h"
+#include "qemu/main-loop.h"
+#include "block/block_int.h"
#include "cmd.h"
+#include "trace/control.h"
#define VERSION "0.0.1"
static void *
create_iovec(QEMUIOVector *qiov, char **argv, int nr_iov, int pattern)
{
- size_t *sizes = calloc(nr_iov, sizeof(size_t));
+ size_t *sizes = g_new0(size_t, nr_iov);
size_t count = 0;
void *buf = NULL;
void *p;
}
fail:
- free(sizes);
+ g_free(sizes);
return buf;
}
return 1;
}
+typedef struct {
+ int64_t offset;
+ int count;
+ int *total;
+ int ret;
+ bool done;
+} CoWriteZeroes;
+
+static void coroutine_fn co_write_zeroes_entry(void *opaque)
+{
+ CoWriteZeroes *data = opaque;
+
+ data->ret = bdrv_co_write_zeroes(bs, data->offset / BDRV_SECTOR_SIZE,
+ data->count / BDRV_SECTOR_SIZE);
+ data->done = true;
+ if (data->ret < 0) {
+ *data->total = data->ret;
+ return;
+ }
+
+ *data->total = data->count;
+}
+
+static int do_co_write_zeroes(int64_t offset, int count, int *total)
+{
+ Coroutine *co;
+ CoWriteZeroes data = {
+ .offset = offset,
+ .count = count,
+ .total = total,
+ .done = false,
+ };
+
+ co = qemu_coroutine_create(co_write_zeroes_entry);
+ qemu_coroutine_enter(co, &data);
+ while (!data.done) {
+ qemu_aio_wait();
+ }
+ if (data.ret < 0) {
+ return data.ret;
+ } else {
+ return 1;
+ }
+}
+
+static int do_write_compressed(char *buf, int64_t offset, int count, int *total)
+{
+ int ret;
+
+ ret = bdrv_write_compressed(bs, offset >> 9, (uint8_t *)buf, count >> 9);
+ if (ret < 0) {
+ return ret;
+ }
+ *total = count;
+ return 1;
+}
+
static int do_load_vmstate(char *buf, int64_t offset, int count, int *total)
{
*total = bdrv_load_vmstate(bs, (uint8_t *)buf, offset, count);
static int do_aio_readv(QEMUIOVector *qiov, int64_t offset, int *total)
{
- BlockDriverAIOCB *acb;
int async_ret = NOT_DONE;
- acb = bdrv_aio_readv(bs, offset >> 9, qiov, qiov->size >> 9,
- aio_rw_done, &async_ret);
- if (!acb) {
- return -EIO;
- }
+ bdrv_aio_readv(bs, offset >> 9, qiov, qiov->size >> 9,
+ aio_rw_done, &async_ret);
while (async_ret == NOT_DONE) {
- qemu_aio_wait();
+ main_loop_wait(false);
}
*total = qiov->size;
static int do_aio_writev(QEMUIOVector *qiov, int64_t offset, int *total)
{
- BlockDriverAIOCB *acb;
int async_ret = NOT_DONE;
- acb = bdrv_aio_writev(bs, offset >> 9, qiov, qiov->size >> 9,
- aio_rw_done, &async_ret);
- if (!acb) {
- return -EIO;
- }
-
+ bdrv_aio_writev(bs, offset >> 9, qiov, qiov->size >> 9,
+ aio_rw_done, &async_ret);
while (async_ret == NOT_DONE) {
- qemu_aio_wait();
+ main_loop_wait(false);
}
*total = qiov->size;
}
while (async_ret.num_done < num_reqs) {
- qemu_aio_wait();
+ main_loop_wait(false);
}
return async_ret.error < 0 ? async_ret.error : 1;
}
if (Pflag) {
- void *cmp_buf = malloc(pattern_count);
+ void *cmp_buf = g_malloc(pattern_count);
memset(cmp_buf, pattern, pattern_count);
if (memcmp(buf + pattern_offset, cmp_buf, pattern_count)) {
printf("Pattern verification failed at offset %"
PRId64 ", %d bytes\n",
offset + pattern_offset, pattern_count);
}
- free(cmp_buf);
+ g_free(cmp_buf);
}
if (qflag) {
}
if (Pflag) {
- void *cmp_buf = malloc(qiov.size);
+ void *cmp_buf = g_malloc(qiov.size);
memset(cmp_buf, pattern, qiov.size);
if (memcmp(buf, cmp_buf, qiov.size)) {
printf("Pattern verification failed at offset %"
PRId64 ", %zd bytes\n", offset, qiov.size);
}
- free(cmp_buf);
+ g_free(cmp_buf);
}
if (qflag) {
print_report("read", &t2, offset, qiov.size, total, cnt, Cflag);
out:
+ qemu_iovec_destroy(&qiov);
qemu_io_free(buf);
return 0;
}
" Writes into a segment of the currently open file, using a buffer\n"
" filled with a set pattern (0xcdcdcdcd).\n"
" -b, -- write to the VM state rather than the virtual disk\n"
+" -c, -- write compressed data with bdrv_write_compressed\n"
" -p, -- use bdrv_pwrite to write the file\n"
" -P, -- use different pattern to fill file\n"
" -C, -- report statistics in a machine parsable format\n"
" -q, -- quiet mode, do not show I/O statistics\n"
+" -z, -- write zeroes using bdrv_co_write_zeroes\n"
"\n");
}
.cfunc = write_f,
.argmin = 2,
.argmax = -1,
- .args = "[-abCpq] [-P pattern ] off len",
+ .args = "[-bcCpqz] [-P pattern ] off len",
.oneline = "writes a number of bytes at a specified offset",
.help = write_help,
};
static int write_f(int argc, char **argv)
{
struct timeval t1, t2;
- int Cflag = 0, pflag = 0, qflag = 0, bflag = 0;
+ int Cflag = 0, pflag = 0, qflag = 0, bflag = 0, Pflag = 0, zflag = 0;
+ int cflag = 0;
int c, cnt;
- char *buf;
+ char *buf = NULL;
int64_t offset;
int count;
/* Some compilers get confused and warn if this is not initialized. */
int total = 0;
int pattern = 0xcd;
- while ((c = getopt(argc, argv, "bCpP:q")) != EOF) {
+ while ((c = getopt(argc, argv, "bcCpP:qz")) != EOF) {
switch (c) {
case 'b':
bflag = 1;
break;
+ case 'c':
+ cflag = 1;
+ break;
case 'C':
Cflag = 1;
break;
pflag = 1;
break;
case 'P':
+ Pflag = 1;
pattern = parse_pattern(optarg);
if (pattern < 0) {
return 0;
case 'q':
qflag = 1;
break;
+ case 'z':
+ zflag = 1;
+ break;
default:
return command_usage(&write_cmd);
}
return command_usage(&write_cmd);
}
- if (bflag && pflag) {
- printf("-b and -p cannot be specified at the same time\n");
+ if (bflag + pflag + zflag > 1) {
+ printf("-b, -p, or -z cannot be specified at the same time\n");
+ return 0;
+ }
+
+ if (zflag && Pflag) {
+ printf("-z and -P cannot be specified at the same time\n");
return 0;
}
}
}
- buf = qemu_io_alloc(count, pattern);
+ if (!zflag) {
+ buf = qemu_io_alloc(count, pattern);
+ }
gettimeofday(&t1, NULL);
if (pflag) {
cnt = do_pwrite(buf, offset, count, &total);
} else if (bflag) {
cnt = do_save_vmstate(buf, offset, count, &total);
+ } else if (zflag) {
+ cnt = do_co_write_zeroes(offset, count, &total);
+ } else if (cflag) {
+ cnt = do_write_compressed(buf, offset, count, &total);
} else {
cnt = do_write(buf, offset, count, &total);
}
print_report("wrote", &t2, offset, count, total, cnt, Cflag);
out:
- qemu_io_free(buf);
+ if (!zflag) {
+ qemu_io_free(buf);
+ }
return 0;
}
t2 = tsub(t2, t1);
print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag);
out:
+ qemu_iovec_destroy(&qiov);
qemu_io_free(buf);
return 0;
}
ctx->qiov.size, 1, ctx->Cflag);
out:
qemu_io_free(ctx->buf);
- free(ctx);
+ qemu_iovec_destroy(&ctx->qiov);
+ g_free(ctx);
}
static void aio_read_done(void *opaque, int ret)
}
if (ctx->Pflag) {
- void *cmp_buf = malloc(ctx->qiov.size);
+ void *cmp_buf = g_malloc(ctx->qiov.size);
memset(cmp_buf, ctx->pattern, ctx->qiov.size);
if (memcmp(ctx->buf, cmp_buf, ctx->qiov.size)) {
printf("Pattern verification failed at offset %"
PRId64 ", %zd bytes\n", ctx->offset, ctx->qiov.size);
}
- free(cmp_buf);
+ g_free(cmp_buf);
}
if (ctx->qflag) {
ctx->qiov.size, 1, ctx->Cflag);
out:
qemu_io_free(ctx->buf);
- free(ctx);
+ qemu_iovec_destroy(&ctx->qiov);
+ g_free(ctx);
}
static void aio_read_help(void)
" Reads a segment of the currently open file, optionally dumping it to the\n"
" 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"
+" used to ensure all outstanding aio requests have been completed.\n"
" -C, -- report statistics in a machine parsable format\n"
" -P, -- use a pattern to verify read data\n"
" -v, -- dump buffer to standard output\n"
static int aio_read_f(int argc, char **argv)
{
int nr_iov, c;
- struct aio_ctx *ctx = calloc(1, sizeof(struct aio_ctx));
- BlockDriverAIOCB *acb;
+ struct aio_ctx *ctx = g_new0(struct aio_ctx, 1);
while ((c = getopt(argc, argv, "CP:qv")) != EOF) {
switch (c) {
ctx->Pflag = 1;
ctx->pattern = parse_pattern(optarg);
if (ctx->pattern < 0) {
- free(ctx);
+ g_free(ctx);
return 0;
}
break;
ctx->vflag = 1;
break;
default:
- free(ctx);
+ g_free(ctx);
return command_usage(&aio_read_cmd);
}
}
if (optind > argc - 2) {
- free(ctx);
+ g_free(ctx);
return command_usage(&aio_read_cmd);
}
ctx->offset = cvtnum(argv[optind]);
if (ctx->offset < 0) {
printf("non-numeric length argument -- %s\n", argv[optind]);
- free(ctx);
+ g_free(ctx);
return 0;
}
optind++;
if (ctx->offset & 0x1ff) {
printf("offset %" PRId64 " is not sector aligned\n",
ctx->offset);
- free(ctx);
+ g_free(ctx);
return 0;
}
nr_iov = argc - optind;
ctx->buf = create_iovec(&ctx->qiov, &argv[optind], nr_iov, 0xab);
if (ctx->buf == NULL) {
- free(ctx);
+ g_free(ctx);
return 0;
}
gettimeofday(&ctx->t1, NULL);
- acb = bdrv_aio_readv(bs, ctx->offset >> 9, &ctx->qiov,
- ctx->qiov.size >> 9, aio_read_done, ctx);
- if (!acb) {
- free(ctx->buf);
- free(ctx);
- return -EIO;
- }
-
+ bdrv_aio_readv(bs, ctx->offset >> 9, &ctx->qiov,
+ ctx->qiov.size >> 9, aio_read_done, ctx);
return 0;
}
" Writes into a segment of the currently open file, using a buffer\n"
" 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"
+" used to ensure all outstanding aio requests have been completed.\n"
" -P, -- use different pattern to fill file\n"
" -C, -- report statistics in a machine parsable format\n"
" -q, -- quiet mode, do not show I/O statistics\n"
{
int nr_iov, c;
int pattern = 0xcd;
- struct aio_ctx *ctx = calloc(1, sizeof(struct aio_ctx));
- BlockDriverAIOCB *acb;
+ struct aio_ctx *ctx = g_new0(struct aio_ctx, 1);
while ((c = getopt(argc, argv, "CqP:")) != EOF) {
switch (c) {
case 'P':
pattern = parse_pattern(optarg);
if (pattern < 0) {
- free(ctx);
+ g_free(ctx);
return 0;
}
break;
default:
- free(ctx);
+ g_free(ctx);
return command_usage(&aio_write_cmd);
}
}
if (optind > argc - 2) {
- free(ctx);
+ g_free(ctx);
return command_usage(&aio_write_cmd);
}
ctx->offset = cvtnum(argv[optind]);
if (ctx->offset < 0) {
printf("non-numeric length argument -- %s\n", argv[optind]);
- free(ctx);
+ g_free(ctx);
return 0;
}
optind++;
if (ctx->offset & 0x1ff) {
printf("offset %" PRId64 " is not sector aligned\n",
ctx->offset);
- free(ctx);
+ g_free(ctx);
return 0;
}
nr_iov = argc - optind;
ctx->buf = create_iovec(&ctx->qiov, &argv[optind], nr_iov, pattern);
if (ctx->buf == NULL) {
- free(ctx);
+ g_free(ctx);
return 0;
}
gettimeofday(&ctx->t1, NULL);
- acb = bdrv_aio_writev(bs, ctx->offset >> 9, &ctx->qiov,
- ctx->qiov.size >> 9, aio_write_done, ctx);
- if (!acb) {
- free(ctx->buf);
- free(ctx);
- return -EIO;
- }
-
+ bdrv_aio_writev(bs, ctx->offset >> 9, &ctx->qiov,
+ ctx->qiov.size >> 9, aio_write_done, ctx);
return 0;
}
static int aio_flush_f(int argc, char **argv)
{
- qemu_aio_flush();
+ bdrv_drain_all();
return 0;
}
static int alloc_f(int argc, char **argv)
{
- int64_t offset;
+ int64_t offset, sector_num;
int nb_sectors, remaining;
char s1[64];
int num, sum_alloc;
remaining = nb_sectors;
sum_alloc = 0;
+ sector_num = offset >> 9;
while (remaining) {
- ret = bdrv_is_allocated(bs, offset >> 9, nb_sectors, &num);
+ ret = bdrv_is_allocated(bs, sector_num, remaining, &num);
+ sector_num += num;
remaining -= num;
if (ret) {
sum_alloc += num;
}
+ if (num == 0) {
+ nb_sectors -= remaining;
+ remaining = 0;
+ }
}
cvtstr(offset, s1, sizeof(s1));
.oneline = "prints the allocated areas of a file",
};
+static int break_f(int argc, char **argv)
+{
+ int ret;
+
+ ret = bdrv_debug_breakpoint(bs, argv[1], argv[2]);
+ if (ret < 0) {
+ printf("Could not set breakpoint: %s\n", strerror(-ret));
+ }
+
+ return 0;
+}
+
+static const cmdinfo_t break_cmd = {
+ .name = "break",
+ .argmin = 2,
+ .argmax = 2,
+ .cfunc = break_f,
+ .args = "event tag",
+ .oneline = "sets a breakpoint on event and tags the stopped "
+ "request as tag",
+};
+
+static int resume_f(int argc, char **argv)
+{
+ int ret;
+
+ ret = bdrv_debug_resume(bs, argv[1]);
+ if (ret < 0) {
+ printf("Could not resume request: %s\n", strerror(-ret));
+ }
+
+ return 0;
+}
+
+static const cmdinfo_t resume_cmd = {
+ .name = "resume",
+ .argmin = 1,
+ .argmax = 1,
+ .cfunc = resume_f,
+ .args = "tag",
+ .oneline = "resumes the request tagged as tag",
+};
+
+static int wait_break_f(int argc, char **argv)
+{
+ while (!bdrv_debug_is_suspended(bs, argv[1])) {
+ qemu_aio_wait();
+ }
+
+ return 0;
+}
+
+static const cmdinfo_t wait_break_cmd = {
+ .name = "wait_break",
+ .argmin = 1,
+ .argmax = 1,
+ .cfunc = wait_break_f,
+ .args = "tag",
+ .oneline = "waits for the suspension of a request",
+};
+
+static int abort_f(int argc, char **argv)
+{
+ abort();
+}
+
+static const cmdinfo_t abort_cmd = {
+ .name = "abort",
+ .cfunc = abort_f,
+ .flags = CMD_NOFILE_OK,
+ .oneline = "simulate a program crash using abort(3)",
+};
static int close_f(int argc, char **argv)
{
" -g, --growable allow file to grow (only applies to protocols)\n"
" -m, --misalign misalign allocations for O_DIRECT\n"
" -k, --native-aio use kernel AIO implementation (on Linux only)\n"
+" -t, --cache=MODE use the given cache mode for the image\n"
+" -T, --trace FILE enable trace events listed in the given file\n"
" -h, --help display this help and exit\n"
" -V, --version output version information and exit\n"
"\n",
{
int readonly = 0;
int growable = 0;
- const char *sopt = "hVc:rsnmgk";
+ const char *sopt = "hVc:rsnmgkt:T:";
const struct option lopt[] = {
{ "help", 0, NULL, 'h' },
{ "version", 0, NULL, 'V' },
{ "misalign", 0, NULL, 'm' },
{ "growable", 0, NULL, 'g' },
{ "native-aio", 0, NULL, 'k' },
+ { "cache", 1, NULL, 't' },
+ { "trace", 1, NULL, 'T' },
{ NULL, 0, NULL, 0 }
};
int c;
case 'k':
flags |= BDRV_O_NATIVE_AIO;
break;
+ case 't':
+ if (bdrv_parse_cache_flags(optarg, &flags) < 0) {
+ error_report("Invalid cache option: %s", optarg);
+ exit(1);
+ }
+ break;
+ case 'T':
+ if (!trace_backend_init(optarg, NULL)) {
+ exit(1); /* error message will have been printed */
+ }
+ break;
case 'V':
printf("%s version %s\n", progname, VERSION);
exit(0);
exit(1);
}
+ qemu_init_main_loop();
bdrv_init();
/* initialize commands */
add_command(&discard_cmd);
add_command(&alloc_cmd);
add_command(&map_cmd);
+ add_command(&break_cmd);
+ add_command(&resume_cmd);
+ add_command(&wait_break_cmd);
+ add_command(&abort_cmd);
add_args_command(init_args_command);
add_check_command(init_check_command);
projects / qemu.git / blobdiff