* [Qemu-devel] [PATCH v2 05/16] qemu-io: Don't use global bs in command implementations
2013-06-05 12:19 [Qemu-devel] [PATCH v2 00/16] Make qemu-io commands available in the monitor Kevin Wolf
` (3 preceding siblings ...)
2013-06-05 12:19 ` [Qemu-devel] [PATCH v2 04/16] qemu-io: Handle cvtnum() errors in 'alloc' Kevin Wolf
@ 2013-06-05 12:19 ` Kevin Wolf
2013-06-05 12:19 ` [Qemu-devel] [PATCH v2 06/16] qemu-io: Split off commands to qemu-io-cmds.c Kevin Wolf
` (11 subsequent siblings)
16 siblings, 0 replies; 19+ messages in thread
From: Kevin Wolf @ 2013-06-05 12:19 UTC (permalink / raw)
To: qemu-devel; +Cc: kwolf, pbonzini, stefanha, lcapitulino
Pass in the BlockDriverState to the command handlers instead of using
the global variable. This is an important step to make the commands
usable outside of qemu-io.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
---
cmd.c | 6 ++-
cmd.h | 8 ++-
qemu-io.c | 167 ++++++++++++++++++++++++++++++++++----------------------------
3 files changed, 101 insertions(+), 80 deletions(-)
diff --git a/cmd.c b/cmd.c
index 214c6f7..d501aab 100644
--- a/cmd.c
+++ b/cmd.c
@@ -57,7 +57,7 @@ check_command(
const cmdinfo_t *ci)
{
if (check_func)
- return check_func(ci);
+ return check_func(qemuio_bs, ci);
return 1;
}
@@ -103,7 +103,7 @@ command(
return 0;
}
optind = 0;
- return ct->cfunc(argc, argv);
+ return ct->cfunc(qemuio_bs, argc, argv);
}
const cmdinfo_t *
@@ -452,6 +452,7 @@ static cmdinfo_t quit_cmd;
/* ARGSUSED */
static int
quit_f(
+ BlockDriverState *bs,
int argc,
char **argv)
{
@@ -490,6 +491,7 @@ help_all(void)
static int
help_f(
+ BlockDriverState *bs,
int argc,
char **argv)
{
diff --git a/cmd.h b/cmd.h
index 4dcfe88..ccf6336 100644
--- a/cmd.h
+++ b/cmd.h
@@ -17,9 +17,13 @@
#ifndef __COMMAND_H__
#define __COMMAND_H__
+#include "qemu-common.h"
+
#define CMD_FLAG_GLOBAL ((int)0x80000000) /* don't iterate "args" */
-typedef int (*cfunc_t)(int argc, char **argv);
+extern BlockDriverState *qemuio_bs;
+
+typedef int (*cfunc_t)(BlockDriverState *bs, int argc, char **argv);
typedef void (*helpfunc_t)(void);
typedef struct cmdinfo {
@@ -41,7 +45,7 @@ extern int ncmds;
void help_init(void);
void quit_init(void);
-typedef int (*checkfunc_t)(const cmdinfo_t *ci);
+typedef int (*checkfunc_t)(BlockDriverState *bs, const cmdinfo_t *ci);
void add_command(const cmdinfo_t *ci);
void add_user_command(char *optarg);
diff --git a/qemu-io.c b/qemu-io.c
index b4f56fc..39d7063 100644
--- a/qemu-io.c
+++ b/qemu-io.c
@@ -25,8 +25,8 @@
#define CMD_NOFILE_OK 0x01
char *progname;
-static BlockDriverState *bs;
+BlockDriverState *qemuio_bs;
static int misalign;
static int64_t cvtnum(const char *s)
@@ -63,7 +63,7 @@ static int parse_pattern(const char *arg)
*/
#define MISALIGN_OFFSET 16
-static void *qemu_io_alloc(size_t len, int pattern)
+static void *qemu_io_alloc(BlockDriverState *bs, size_t len, int pattern)
{
void *buf;
@@ -136,7 +136,8 @@ static void print_report(const char *op, struct timeval *t, int64_t offset,
* vector matching it.
*/
static void *
-create_iovec(QEMUIOVector *qiov, char **argv, int nr_iov, int pattern)
+create_iovec(BlockDriverState *bs, QEMUIOVector *qiov, char **argv, int nr_iov,
+ int pattern)
{
size_t *sizes = g_new0(size_t, nr_iov);
size_t count = 0;
@@ -172,7 +173,7 @@ create_iovec(QEMUIOVector *qiov, char **argv, int nr_iov, int pattern)
qemu_iovec_init(qiov, nr_iov);
- buf = p = qemu_io_alloc(count, pattern);
+ buf = p = qemu_io_alloc(bs, count, pattern);
for (i = 0; i < nr_iov; i++) {
qemu_iovec_add(qiov, p, sizes[i]);
@@ -184,7 +185,8 @@ fail:
return buf;
}
-static int do_read(char *buf, int64_t offset, int count, int *total)
+static int do_read(BlockDriverState *bs, char *buf, int64_t offset, int count,
+ int *total)
{
int ret;
@@ -196,7 +198,8 @@ static int do_read(char *buf, int64_t offset, int count, int *total)
return 1;
}
-static int do_write(char *buf, int64_t offset, int count, int *total)
+static int do_write(BlockDriverState *bs, char *buf, int64_t offset, int count,
+ int *total)
{
int ret;
@@ -208,7 +211,8 @@ static int do_write(char *buf, int64_t offset, int count, int *total)
return 1;
}
-static int do_pread(char *buf, int64_t offset, int count, int *total)
+static int do_pread(BlockDriverState *bs, char *buf, int64_t offset, int count,
+ int *total)
{
*total = bdrv_pread(bs, offset, (uint8_t *)buf, count);
if (*total < 0) {
@@ -217,7 +221,8 @@ static int do_pread(char *buf, int64_t offset, int count, int *total)
return 1;
}
-static int do_pwrite(char *buf, int64_t offset, int count, int *total)
+static int do_pwrite(BlockDriverState *bs, char *buf, int64_t offset, int count,
+ int *total)
{
*total = bdrv_pwrite(bs, offset, (uint8_t *)buf, count);
if (*total < 0) {
@@ -227,6 +232,7 @@ static int do_pwrite(char *buf, int64_t offset, int count, int *total)
}
typedef struct {
+ BlockDriverState *bs;
int64_t offset;
int count;
int *total;
@@ -238,7 +244,7 @@ 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->ret = bdrv_co_write_zeroes(data->bs, data->offset / BDRV_SECTOR_SIZE,
data->count / BDRV_SECTOR_SIZE);
data->done = true;
if (data->ret < 0) {
@@ -249,10 +255,12 @@ static void coroutine_fn co_write_zeroes_entry(void *opaque)
*data->total = data->count;
}
-static int do_co_write_zeroes(int64_t offset, int count, int *total)
+static int do_co_write_zeroes(BlockDriverState *bs, int64_t offset, int count,
+ int *total)
{
Coroutine *co;
CoWriteZeroes data = {
+ .bs = bs,
.offset = offset,
.count = count,
.total = total,
@@ -271,7 +279,8 @@ static int do_co_write_zeroes(int64_t offset, int count, int *total)
}
}
-static int do_write_compressed(char *buf, int64_t offset, int count, int *total)
+static int do_write_compressed(BlockDriverState *bs, char *buf, int64_t offset,
+ int count, int *total)
{
int ret;
@@ -283,7 +292,8 @@ static int do_write_compressed(char *buf, int64_t offset, int count, int *total)
return 1;
}
-static int do_load_vmstate(char *buf, int64_t offset, int count, int *total)
+static int do_load_vmstate(BlockDriverState *bs, char *buf, int64_t offset,
+ int count, int *total)
{
*total = bdrv_load_vmstate(bs, (uint8_t *)buf, offset, count);
if (*total < 0) {
@@ -292,7 +302,8 @@ static int do_load_vmstate(char *buf, int64_t offset, int count, int *total)
return 1;
}
-static int do_save_vmstate(char *buf, int64_t offset, int count, int *total)
+static int do_save_vmstate(BlockDriverState *bs, char *buf, int64_t offset,
+ int count, int *total)
{
*total = bdrv_save_vmstate(bs, (uint8_t *)buf, offset, count);
if (*total < 0) {
@@ -307,7 +318,8 @@ static void aio_rw_done(void *opaque, int ret)
*(int *)opaque = ret;
}
-static int do_aio_readv(QEMUIOVector *qiov, int64_t offset, int *total)
+static int do_aio_readv(BlockDriverState *bs, QEMUIOVector *qiov,
+ int64_t offset, int *total)
{
int async_ret = NOT_DONE;
@@ -321,7 +333,8 @@ static int do_aio_readv(QEMUIOVector *qiov, int64_t offset, int *total)
return async_ret < 0 ? async_ret : 1;
}
-static int do_aio_writev(QEMUIOVector *qiov, int64_t offset, int *total)
+static int do_aio_writev(BlockDriverState *bs, QEMUIOVector *qiov,
+ int64_t offset, int *total)
{
int async_ret = NOT_DONE;
@@ -350,7 +363,8 @@ static void multiwrite_cb(void *opaque, int ret)
}
}
-static int do_aio_multiwrite(BlockRequest* reqs, int num_reqs, int *total)
+static int do_aio_multiwrite(BlockDriverState *bs, BlockRequest* reqs,
+ int num_reqs, int *total)
{
int i, ret;
struct multiwrite_async_ret async_ret = {
@@ -399,7 +413,7 @@ static void read_help(void)
"\n");
}
-static int read_f(int argc, char **argv);
+static int read_f(BlockDriverState *bs, int argc, char **argv);
static const cmdinfo_t read_cmd = {
.name = "read",
@@ -412,7 +426,7 @@ static const cmdinfo_t read_cmd = {
.help = read_help,
};
-static int read_f(int argc, char **argv)
+static int read_f(BlockDriverState *bs, int argc, char **argv)
{
struct timeval t1, t2;
int Cflag = 0, pflag = 0, qflag = 0, vflag = 0;
@@ -518,15 +532,15 @@ static int read_f(int argc, char **argv)
}
}
- buf = qemu_io_alloc(count, 0xab);
+ buf = qemu_io_alloc(bs, count, 0xab);
gettimeofday(&t1, NULL);
if (pflag) {
- cnt = do_pread(buf, offset, count, &total);
+ cnt = do_pread(bs, buf, offset, count, &total);
} else if (bflag) {
- cnt = do_load_vmstate(buf, offset, count, &total);
+ cnt = do_load_vmstate(bs, buf, offset, count, &total);
} else {
- cnt = do_read(buf, offset, count, &total);
+ cnt = do_read(bs, buf, offset, count, &total);
}
gettimeofday(&t2, NULL);
@@ -583,7 +597,7 @@ static void readv_help(void)
"\n");
}
-static int readv_f(int argc, char **argv);
+static int readv_f(BlockDriverState *bs, int argc, char **argv);
static const cmdinfo_t readv_cmd = {
.name = "readv",
@@ -595,7 +609,7 @@ static const cmdinfo_t readv_cmd = {
.help = readv_help,
};
-static int readv_f(int argc, char **argv)
+static int readv_f(BlockDriverState *bs, int argc, char **argv)
{
struct timeval t1, t2;
int Cflag = 0, qflag = 0, vflag = 0;
@@ -651,13 +665,13 @@ static int readv_f(int argc, char **argv)
}
nr_iov = argc - optind;
- buf = create_iovec(&qiov, &argv[optind], nr_iov, 0xab);
+ buf = create_iovec(bs, &qiov, &argv[optind], nr_iov, 0xab);
if (buf == NULL) {
return 0;
}
gettimeofday(&t1, NULL);
- cnt = do_aio_readv(&qiov, offset, &total);
+ cnt = do_aio_readv(bs, &qiov, offset, &total);
gettimeofday(&t2, NULL);
if (cnt < 0) {
@@ -714,7 +728,7 @@ static void write_help(void)
"\n");
}
-static int write_f(int argc, char **argv);
+static int write_f(BlockDriverState *bs, int argc, char **argv);
static const cmdinfo_t write_cmd = {
.name = "write",
@@ -727,7 +741,7 @@ static const cmdinfo_t write_cmd = {
.help = write_help,
};
-static int write_f(int argc, char **argv)
+static int write_f(BlockDriverState *bs, int argc, char **argv)
{
struct timeval t1, t2;
int Cflag = 0, pflag = 0, qflag = 0, bflag = 0, Pflag = 0, zflag = 0;
@@ -814,20 +828,20 @@ static int write_f(int argc, char **argv)
}
if (!zflag) {
- buf = qemu_io_alloc(count, pattern);
+ buf = qemu_io_alloc(bs, count, pattern);
}
gettimeofday(&t1, NULL);
if (pflag) {
- cnt = do_pwrite(buf, offset, count, &total);
+ cnt = do_pwrite(bs, buf, offset, count, &total);
} else if (bflag) {
- cnt = do_save_vmstate(buf, offset, count, &total);
+ cnt = do_save_vmstate(bs, buf, offset, count, &total);
} else if (zflag) {
- cnt = do_co_write_zeroes(offset, count, &total);
+ cnt = do_co_write_zeroes(bs, offset, count, &total);
} else if (cflag) {
- cnt = do_write_compressed(buf, offset, count, &total);
+ cnt = do_write_compressed(bs, buf, offset, count, &total);
} else {
- cnt = do_write(buf, offset, count, &total);
+ cnt = do_write(bs, buf, offset, count, &total);
}
gettimeofday(&t2, NULL);
@@ -870,7 +884,7 @@ writev_help(void)
"\n");
}
-static int writev_f(int argc, char **argv);
+static int writev_f(BlockDriverState *bs, int argc, char **argv);
static const cmdinfo_t writev_cmd = {
.name = "writev",
@@ -882,7 +896,7 @@ static const cmdinfo_t writev_cmd = {
.help = writev_help,
};
-static int writev_f(int argc, char **argv)
+static int writev_f(BlockDriverState *bs, int argc, char **argv)
{
struct timeval t1, t2;
int Cflag = 0, qflag = 0;
@@ -932,13 +946,13 @@ static int writev_f(int argc, char **argv)
}
nr_iov = argc - optind;
- buf = create_iovec(&qiov, &argv[optind], nr_iov, pattern);
+ buf = create_iovec(bs, &qiov, &argv[optind], nr_iov, pattern);
if (buf == NULL) {
return 0;
}
gettimeofday(&t1, NULL);
- cnt = do_aio_writev(&qiov, offset, &total);
+ cnt = do_aio_writev(bs, &qiov, offset, &total);
gettimeofday(&t2, NULL);
if (cnt < 0) {
@@ -979,7 +993,7 @@ static void multiwrite_help(void)
"\n");
}
-static int multiwrite_f(int argc, char **argv);
+static int multiwrite_f(BlockDriverState *bs, int argc, char **argv);
static const cmdinfo_t multiwrite_cmd = {
.name = "multiwrite",
@@ -991,7 +1005,7 @@ static const cmdinfo_t multiwrite_cmd = {
.help = multiwrite_help,
};
-static int multiwrite_f(int argc, char **argv)
+static int multiwrite_f(BlockDriverState *bs, int argc, char **argv)
{
struct timeval t1, t2;
int Cflag = 0, qflag = 0;
@@ -1072,7 +1086,7 @@ static int multiwrite_f(int argc, char **argv)
nr_iov = j - optind;
/* Build request */
- buf[i] = create_iovec(&qiovs[i], &argv[optind], nr_iov, pattern);
+ buf[i] = create_iovec(bs, &qiovs[i], &argv[optind], nr_iov, pattern);
if (buf[i] == NULL) {
goto out;
}
@@ -1090,7 +1104,7 @@ static int multiwrite_f(int argc, char **argv)
nr_reqs = i;
gettimeofday(&t1, NULL);
- cnt = do_aio_multiwrite(reqs, nr_reqs, &total);
+ cnt = do_aio_multiwrite(bs, reqs, nr_reqs, &total);
gettimeofday(&t2, NULL);
if (cnt < 0) {
@@ -1218,7 +1232,7 @@ static void aio_read_help(void)
"\n");
}
-static int aio_read_f(int argc, char **argv);
+static int aio_read_f(BlockDriverState *bs, int argc, char **argv);
static const cmdinfo_t aio_read_cmd = {
.name = "aio_read",
@@ -1230,7 +1244,7 @@ static const cmdinfo_t aio_read_cmd = {
.help = aio_read_help,
};
-static int aio_read_f(int argc, char **argv)
+static int aio_read_f(BlockDriverState *bs, int argc, char **argv)
{
int nr_iov, c;
struct aio_ctx *ctx = g_new0(struct aio_ctx, 1);
@@ -1281,7 +1295,7 @@ static int aio_read_f(int argc, char **argv)
}
nr_iov = argc - optind;
- ctx->buf = create_iovec(&ctx->qiov, &argv[optind], nr_iov, 0xab);
+ ctx->buf = create_iovec(bs, &ctx->qiov, &argv[optind], nr_iov, 0xab);
if (ctx->buf == NULL) {
g_free(ctx);
return 0;
@@ -1313,7 +1327,7 @@ static void aio_write_help(void)
"\n");
}
-static int aio_write_f(int argc, char **argv);
+static int aio_write_f(BlockDriverState *bs, int argc, char **argv);
static const cmdinfo_t aio_write_cmd = {
.name = "aio_write",
@@ -1325,7 +1339,7 @@ static const cmdinfo_t aio_write_cmd = {
.help = aio_write_help,
};
-static int aio_write_f(int argc, char **argv)
+static int aio_write_f(BlockDriverState *bs, int argc, char **argv)
{
int nr_iov, c;
int pattern = 0xcd;
@@ -1373,7 +1387,7 @@ static int aio_write_f(int argc, char **argv)
}
nr_iov = argc - optind;
- ctx->buf = create_iovec(&ctx->qiov, &argv[optind], nr_iov, pattern);
+ ctx->buf = create_iovec(bs, &ctx->qiov, &argv[optind], nr_iov, pattern);
if (ctx->buf == NULL) {
g_free(ctx);
return 0;
@@ -1385,7 +1399,7 @@ static int aio_write_f(int argc, char **argv)
return 0;
}
-static int aio_flush_f(int argc, char **argv)
+static int aio_flush_f(BlockDriverState *bs, int argc, char **argv)
{
bdrv_drain_all();
return 0;
@@ -1397,7 +1411,7 @@ static const cmdinfo_t aio_flush_cmd = {
.oneline = "completes all outstanding aio requests"
};
-static int flush_f(int argc, char **argv)
+static int flush_f(BlockDriverState *bs, int argc, char **argv)
{
bdrv_flush(bs);
return 0;
@@ -1410,7 +1424,7 @@ static const cmdinfo_t flush_cmd = {
.oneline = "flush all in-core file state to disk",
};
-static int truncate_f(int argc, char **argv)
+static int truncate_f(BlockDriverState *bs, int argc, char **argv)
{
int64_t offset;
int ret;
@@ -1440,7 +1454,7 @@ static const cmdinfo_t truncate_cmd = {
.oneline = "truncates the current file at the given offset",
};
-static int length_f(int argc, char **argv)
+static int length_f(BlockDriverState *bs, int argc, char **argv)
{
int64_t size;
char s1[64];
@@ -1465,7 +1479,7 @@ static const cmdinfo_t length_cmd = {
};
-static int info_f(int argc, char **argv)
+static int info_f(BlockDriverState *bs, int argc, char **argv)
{
BlockDriverInfo bdi;
char s1[64], s2[64];
@@ -1516,7 +1530,7 @@ static void discard_help(void)
"\n");
}
-static int discard_f(int argc, char **argv);
+static int discard_f(BlockDriverState *bs, int argc, char **argv);
static const cmdinfo_t discard_cmd = {
.name = "discard",
@@ -1529,7 +1543,7 @@ static const cmdinfo_t discard_cmd = {
.help = discard_help,
};
-static int discard_f(int argc, char **argv)
+static int discard_f(BlockDriverState *bs, int argc, char **argv)
{
struct timeval t1, t2;
int Cflag = 0, qflag = 0;
@@ -1587,7 +1601,7 @@ out:
return 0;
}
-static int alloc_f(int argc, char **argv)
+static int alloc_f(BlockDriverState *bs, int argc, char **argv)
{
int64_t offset, sector_num;
int nb_sectors, remaining;
@@ -1649,7 +1663,8 @@ static const cmdinfo_t alloc_cmd = {
};
-static int map_is_allocated(int64_t sector_num, int64_t nb_sectors, int64_t *pnum)
+static int map_is_allocated(BlockDriverState *bs, int64_t sector_num,
+ int64_t nb_sectors, int64_t *pnum)
{
int num, num_checked;
int ret, firstret;
@@ -1679,7 +1694,7 @@ static int map_is_allocated(int64_t sector_num, int64_t nb_sectors, int64_t *pnu
return firstret;
}
-static int map_f(int argc, char **argv)
+static int map_f(BlockDriverState *bs, int argc, char **argv)
{
int64_t offset;
int64_t nb_sectors;
@@ -1692,7 +1707,7 @@ static int map_f(int argc, char **argv)
nb_sectors = bs->total_sectors;
do {
- ret = map_is_allocated(offset, nb_sectors, &num);
+ ret = map_is_allocated(bs, offset, nb_sectors, &num);
if (ret < 0) {
error_report("Failed to get allocation status: %s", strerror(-ret));
return 0;
@@ -1720,7 +1735,7 @@ static const cmdinfo_t map_cmd = {
.oneline = "prints the allocated areas of a file",
};
-static int break_f(int argc, char **argv)
+static int break_f(BlockDriverState *bs, int argc, char **argv)
{
int ret;
@@ -1742,7 +1757,7 @@ static const cmdinfo_t break_cmd = {
"request as tag",
};
-static int resume_f(int argc, char **argv)
+static int resume_f(BlockDriverState *bs, int argc, char **argv)
{
int ret;
@@ -1763,7 +1778,7 @@ static const cmdinfo_t resume_cmd = {
.oneline = "resumes the request tagged as tag",
};
-static int wait_break_f(int argc, char **argv)
+static int wait_break_f(BlockDriverState *bs, int argc, char **argv)
{
while (!bdrv_debug_is_suspended(bs, argv[1])) {
qemu_aio_wait();
@@ -1781,7 +1796,7 @@ static const cmdinfo_t wait_break_cmd = {
.oneline = "waits for the suspension of a request",
};
-static int abort_f(int argc, char **argv)
+static int abort_f(BlockDriverState *bs, int argc, char **argv)
{
abort();
}
@@ -1793,10 +1808,10 @@ static const cmdinfo_t abort_cmd = {
.oneline = "simulate a program crash using abort(3)",
};
-static int close_f(int argc, char **argv)
+static int close_f(BlockDriverState *bs, int argc, char **argv)
{
bdrv_delete(bs);
- bs = NULL;
+ qemuio_bs = NULL;
return 0;
}
@@ -1809,23 +1824,23 @@ static const cmdinfo_t close_cmd = {
static int openfile(char *name, int flags, int growable)
{
- if (bs) {
+ if (qemuio_bs) {
fprintf(stderr, "file open already, try 'help close'\n");
return 1;
}
if (growable) {
- if (bdrv_file_open(&bs, name, NULL, flags)) {
+ if (bdrv_file_open(&qemuio_bs, name, NULL, flags)) {
fprintf(stderr, "%s: can't open device %s\n", progname, name);
return 1;
}
} else {
- bs = bdrv_new("hda");
+ qemuio_bs = bdrv_new("hda");
- if (bdrv_open(bs, name, NULL, flags, NULL) < 0) {
+ if (bdrv_open(qemuio_bs, name, NULL, flags, NULL) < 0) {
fprintf(stderr, "%s: can't open device %s\n", progname, name);
- bdrv_delete(bs);
- bs = NULL;
+ bdrv_delete(qemuio_bs);
+ qemuio_bs = NULL;
return 1;
}
}
@@ -1850,7 +1865,7 @@ static void open_help(void)
"\n");
}
-static int open_f(int argc, char **argv);
+static int open_f(BlockDriverState *bs, int argc, char **argv);
static const cmdinfo_t open_cmd = {
.name = "open",
@@ -1864,7 +1879,7 @@ static const cmdinfo_t open_cmd = {
.help = open_help,
};
-static int open_f(int argc, char **argv)
+static int open_f(BlockDriverState *bs, int argc, char **argv)
{
int flags = 0;
int readonly = 0;
@@ -1901,7 +1916,7 @@ static int open_f(int argc, char **argv)
return openfile(argv[optind], flags, growable);
}
-static int init_check_command(const cmdinfo_t *ct)
+static int init_check_command(BlockDriverState *bs, const cmdinfo_t *ct)
{
if (ct->flags & CMD_FLAG_GLOBAL) {
return 1;
@@ -2064,8 +2079,8 @@ int main(int argc, char **argv)
*/
bdrv_drain_all();
- if (bs) {
- bdrv_delete(bs);
+ if (qemuio_bs) {
+ bdrv_delete(qemuio_bs);
}
return 0;
}
--
1.8.1.4
^ permalink raw reply related [flat|nested] 19+ messages in thread* [Qemu-devel] [PATCH v2 06/16] qemu-io: Split off commands to qemu-io-cmds.c
2013-06-05 12:19 [Qemu-devel] [PATCH v2 00/16] Make qemu-io commands available in the monitor Kevin Wolf
` (4 preceding siblings ...)
2013-06-05 12:19 ` [Qemu-devel] [PATCH v2 05/16] qemu-io: Don't use global bs in command implementations Kevin Wolf
@ 2013-06-05 12:19 ` Kevin Wolf
2013-06-05 12:19 ` [Qemu-devel] [PATCH v2 07/16] qemu-io: Factor out qemuio_command Kevin Wolf
` (10 subsequent siblings)
16 siblings, 0 replies; 19+ messages in thread
From: Kevin Wolf @ 2013-06-05 12:19 UTC (permalink / raw)
To: qemu-devel; +Cc: kwolf, pbonzini, stefanha, lcapitulino
This is the implementation of all qemu-io commands that make sense to be
called from the qemu monitor, i.e. everything except open, close and
quit.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
---
Makefile | 2 +-
qemu-io-cmds.c | 1835 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
qemu-io.c | 1817 +------------------------------------------------------
3 files changed, 1838 insertions(+), 1816 deletions(-)
create mode 100644 qemu-io-cmds.c
diff --git a/Makefile b/Makefile
index a96736b..cf932eb 100644
--- a/Makefile
+++ b/Makefile
@@ -186,7 +186,7 @@ qemu-img.o: qemu-img-cmds.h
qemu-img$(EXESUF): qemu-img.o $(block-obj-y) libqemuutil.a libqemustub.a
qemu-nbd$(EXESUF): qemu-nbd.o $(block-obj-y) libqemuutil.a libqemustub.a
-qemu-io$(EXESUF): qemu-io.o cmd.o $(block-obj-y) libqemuutil.a libqemustub.a
+qemu-io$(EXESUF): qemu-io.o qemu-io-cmds.o cmd.o $(block-obj-y) libqemuutil.a libqemustub.a
qemu-bridge-helper$(EXESUF): qemu-bridge-helper.o
diff --git a/qemu-io-cmds.c b/qemu-io-cmds.c
new file mode 100644
index 0000000..0a3817a
--- /dev/null
+++ b/qemu-io-cmds.c
@@ -0,0 +1,1835 @@
+/*
+ * Command line utility to exercise the QEMU I/O path.
+ *
+ * Copyright (C) 2009 Red Hat, Inc.
+ * Copyright (c) 2003-2005 Silicon Graphics, Inc.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include "qemu-common.h"
+#include "block/block_int.h"
+#include "cmd.h"
+
+#define CMD_NOFILE_OK 0x01
+
+int qemuio_misalign;
+
+static int64_t cvtnum(const char *s)
+{
+ char *end;
+ return strtosz_suffix(s, &end, STRTOSZ_DEFSUFFIX_B);
+}
+
+/*
+ * Parse the pattern argument to various sub-commands.
+ *
+ * Because the pattern is used as an argument to memset it must evaluate
+ * to an unsigned integer that fits into a single byte.
+ */
+static int parse_pattern(const char *arg)
+{
+ char *endptr = NULL;
+ long pattern;
+
+ pattern = strtol(arg, &endptr, 0);
+ if (pattern < 0 || pattern > UCHAR_MAX || *endptr != '\0') {
+ printf("%s is not a valid pattern byte\n", arg);
+ return -1;
+ }
+
+ return pattern;
+}
+
+/*
+ * Memory allocation helpers.
+ *
+ * Make sure memory is aligned by default, or purposefully misaligned if
+ * that is specified on the command line.
+ */
+
+#define MISALIGN_OFFSET 16
+static void *qemu_io_alloc(BlockDriverState *bs, size_t len, int pattern)
+{
+ void *buf;
+
+ if (qemuio_misalign) {
+ len += MISALIGN_OFFSET;
+ }
+ buf = qemu_blockalign(bs, len);
+ memset(buf, pattern, len);
+ if (qemuio_misalign) {
+ buf += MISALIGN_OFFSET;
+ }
+ return buf;
+}
+
+static void qemu_io_free(void *p)
+{
+ if (qemuio_misalign) {
+ p -= MISALIGN_OFFSET;
+ }
+ qemu_vfree(p);
+}
+
+static void dump_buffer(const void *buffer, int64_t offset, int len)
+{
+ int i, j;
+ const uint8_t *p;
+
+ for (i = 0, p = buffer; i < len; i += 16) {
+ const uint8_t *s = p;
+
+ printf("%08" PRIx64 ": ", offset + i);
+ for (j = 0; j < 16 && i + j < len; j++, p++) {
+ printf("%02x ", *p);
+ }
+ printf(" ");
+ for (j = 0; j < 16 && i + j < len; j++, s++) {
+ if (isalnum(*s)) {
+ printf("%c", *s);
+ } else {
+ printf(".");
+ }
+ }
+ printf("\n");
+ }
+}
+
+static void print_report(const char *op, struct timeval *t, int64_t offset,
+ int count, int total, int cnt, int Cflag)
+{
+ char s1[64], s2[64], ts[64];
+
+ timestr(t, ts, sizeof(ts), Cflag ? VERBOSE_FIXED_TIME : 0);
+ if (!Cflag) {
+ cvtstr((double)total, s1, sizeof(s1));
+ cvtstr(tdiv((double)total, *t), s2, sizeof(s2));
+ printf("%s %d/%d bytes at offset %" PRId64 "\n",
+ op, total, count, offset);
+ printf("%s, %d ops; %s (%s/sec and %.4f ops/sec)\n",
+ s1, cnt, ts, s2, tdiv((double)cnt, *t));
+ } else {/* bytes,ops,time,bytes/sec,ops/sec */
+ printf("%d,%d,%s,%.3f,%.3f\n",
+ total, cnt, ts,
+ tdiv((double)total, *t),
+ tdiv((double)cnt, *t));
+ }
+}
+
+/*
+ * Parse multiple length statements for vectored I/O, and construct an I/O
+ * vector matching it.
+ */
+static void *
+create_iovec(BlockDriverState *bs, QEMUIOVector *qiov, char **argv, int nr_iov,
+ int pattern)
+{
+ size_t *sizes = g_new0(size_t, nr_iov);
+ size_t count = 0;
+ void *buf = NULL;
+ void *p;
+ int i;
+
+ for (i = 0; i < nr_iov; i++) {
+ char *arg = argv[i];
+ int64_t len;
+
+ len = cvtnum(arg);
+ if (len < 0) {
+ printf("non-numeric length argument -- %s\n", arg);
+ goto fail;
+ }
+
+ /* should be SIZE_T_MAX, but that doesn't exist */
+ if (len > INT_MAX) {
+ printf("too large length argument -- %s\n", arg);
+ goto fail;
+ }
+
+ if (len & 0x1ff) {
+ printf("length argument %" PRId64
+ " is not sector aligned\n", len);
+ goto fail;
+ }
+
+ sizes[i] = len;
+ count += len;
+ }
+
+ qemu_iovec_init(qiov, nr_iov);
+
+ buf = p = qemu_io_alloc(bs, count, pattern);
+
+ for (i = 0; i < nr_iov; i++) {
+ qemu_iovec_add(qiov, p, sizes[i]);
+ p += sizes[i];
+ }
+
+fail:
+ g_free(sizes);
+ return buf;
+}
+
+static int do_read(BlockDriverState *bs, char *buf, int64_t offset, int count,
+ int *total)
+{
+ int ret;
+
+ ret = bdrv_read(bs, offset >> 9, (uint8_t *)buf, count >> 9);
+ if (ret < 0) {
+ return ret;
+ }
+ *total = count;
+ return 1;
+}
+
+static int do_write(BlockDriverState *bs, char *buf, int64_t offset, int count,
+ int *total)
+{
+ int ret;
+
+ ret = bdrv_write(bs, offset >> 9, (uint8_t *)buf, count >> 9);
+ if (ret < 0) {
+ return ret;
+ }
+ *total = count;
+ return 1;
+}
+
+static int do_pread(BlockDriverState *bs, char *buf, int64_t offset, int count,
+ int *total)
+{
+ *total = bdrv_pread(bs, offset, (uint8_t *)buf, count);
+ if (*total < 0) {
+ return *total;
+ }
+ return 1;
+}
+
+static int do_pwrite(BlockDriverState *bs, char *buf, int64_t offset, int count,
+ int *total)
+{
+ *total = bdrv_pwrite(bs, offset, (uint8_t *)buf, count);
+ if (*total < 0) {
+ return *total;
+ }
+ return 1;
+}
+
+typedef struct {
+ BlockDriverState *bs;
+ 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(data->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(BlockDriverState *bs, int64_t offset, int count,
+ int *total)
+{
+ Coroutine *co;
+ CoWriteZeroes data = {
+ .bs = bs,
+ .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(BlockDriverState *bs, 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(BlockDriverState *bs, char *buf, int64_t offset,
+ int count, int *total)
+{
+ *total = bdrv_load_vmstate(bs, (uint8_t *)buf, offset, count);
+ if (*total < 0) {
+ return *total;
+ }
+ return 1;
+}
+
+static int do_save_vmstate(BlockDriverState *bs, char *buf, int64_t offset,
+ int count, int *total)
+{
+ *total = bdrv_save_vmstate(bs, (uint8_t *)buf, offset, count);
+ if (*total < 0) {
+ return *total;
+ }
+ return 1;
+}
+
+#define NOT_DONE 0x7fffffff
+static void aio_rw_done(void *opaque, int ret)
+{
+ *(int *)opaque = ret;
+}
+
+static int do_aio_readv(BlockDriverState *bs, QEMUIOVector *qiov,
+ int64_t offset, int *total)
+{
+ int async_ret = NOT_DONE;
+
+ bdrv_aio_readv(bs, offset >> 9, qiov, qiov->size >> 9,
+ aio_rw_done, &async_ret);
+ while (async_ret == NOT_DONE) {
+ main_loop_wait(false);
+ }
+
+ *total = qiov->size;
+ return async_ret < 0 ? async_ret : 1;
+}
+
+static int do_aio_writev(BlockDriverState *bs, QEMUIOVector *qiov,
+ int64_t offset, int *total)
+{
+ int async_ret = NOT_DONE;
+
+ bdrv_aio_writev(bs, offset >> 9, qiov, qiov->size >> 9,
+ aio_rw_done, &async_ret);
+ while (async_ret == NOT_DONE) {
+ main_loop_wait(false);
+ }
+
+ *total = qiov->size;
+ return async_ret < 0 ? async_ret : 1;
+}
+
+struct multiwrite_async_ret {
+ int num_done;
+ int error;
+};
+
+static void multiwrite_cb(void *opaque, int ret)
+{
+ struct multiwrite_async_ret *async_ret = opaque;
+
+ async_ret->num_done++;
+ if (ret < 0) {
+ async_ret->error = ret;
+ }
+}
+
+static int do_aio_multiwrite(BlockDriverState *bs, BlockRequest* reqs,
+ int num_reqs, int *total)
+{
+ int i, ret;
+ struct multiwrite_async_ret async_ret = {
+ .num_done = 0,
+ .error = 0,
+ };
+
+ *total = 0;
+ for (i = 0; i < num_reqs; i++) {
+ reqs[i].cb = multiwrite_cb;
+ reqs[i].opaque = &async_ret;
+ *total += reqs[i].qiov->size;
+ }
+
+ ret = bdrv_aio_multiwrite(bs, reqs, num_reqs);
+ if (ret < 0) {
+ return ret;
+ }
+
+ while (async_ret.num_done < num_reqs) {
+ main_loop_wait(false);
+ }
+
+ return async_ret.error < 0 ? async_ret.error : 1;
+}
+
+static void read_help(void)
+{
+ printf(
+"\n"
+" reads a range of bytes from the given offset\n"
+"\n"
+" Example:\n"
+" 'read -v 512 1k' - dumps 1 kilobyte read from 512 bytes into the file\n"
+"\n"
+" Reads a segment of the currently open file, optionally dumping it to the\n"
+" standard output stream (with -v option) for subsequent inspection.\n"
+" -b, -- read from the VM state rather than the virtual disk\n"
+" -C, -- report statistics in a machine parsable format\n"
+" -l, -- length for pattern verification (only with -P)\n"
+" -p, -- use bdrv_pread to read the file\n"
+" -P, -- use a pattern to verify read data\n"
+" -q, -- quiet mode, do not show I/O statistics\n"
+" -s, -- start offset for pattern verification (only with -P)\n"
+" -v, -- dump buffer to standard output\n"
+"\n");
+}
+
+static int read_f(BlockDriverState *bs, int argc, char **argv);
+
+static const cmdinfo_t read_cmd = {
+ .name = "read",
+ .altname = "r",
+ .cfunc = read_f,
+ .argmin = 2,
+ .argmax = -1,
+ .args = "[-abCpqv] [-P pattern [-s off] [-l len]] off len",
+ .oneline = "reads a number of bytes at a specified offset",
+ .help = read_help,
+};
+
+static int read_f(BlockDriverState *bs, int argc, char **argv)
+{
+ struct timeval t1, t2;
+ int Cflag = 0, pflag = 0, qflag = 0, vflag = 0;
+ int Pflag = 0, sflag = 0, lflag = 0, bflag = 0;
+ int c, cnt;
+ char *buf;
+ int64_t offset;
+ int count;
+ /* Some compilers get confused and warn if this is not initialized. */
+ int total = 0;
+ int pattern = 0, pattern_offset = 0, pattern_count = 0;
+
+ while ((c = getopt(argc, argv, "bCl:pP:qs:v")) != EOF) {
+ switch (c) {
+ case 'b':
+ bflag = 1;
+ break;
+ case 'C':
+ Cflag = 1;
+ break;
+ case 'l':
+ lflag = 1;
+ pattern_count = cvtnum(optarg);
+ if (pattern_count < 0) {
+ printf("non-numeric length argument -- %s\n", optarg);
+ return 0;
+ }
+ break;
+ case 'p':
+ pflag = 1;
+ break;
+ case 'P':
+ Pflag = 1;
+ pattern = parse_pattern(optarg);
+ if (pattern < 0) {
+ return 0;
+ }
+ break;
+ case 'q':
+ qflag = 1;
+ break;
+ case 's':
+ sflag = 1;
+ pattern_offset = cvtnum(optarg);
+ if (pattern_offset < 0) {
+ printf("non-numeric length argument -- %s\n", optarg);
+ return 0;
+ }
+ break;
+ case 'v':
+ vflag = 1;
+ break;
+ default:
+ return command_usage(&read_cmd);
+ }
+ }
+
+ if (optind != argc - 2) {
+ return command_usage(&read_cmd);
+ }
+
+ if (bflag && pflag) {
+ printf("-b and -p cannot be specified at the same time\n");
+ return 0;
+ }
+
+ offset = cvtnum(argv[optind]);
+ if (offset < 0) {
+ printf("non-numeric length argument -- %s\n", argv[optind]);
+ return 0;
+ }
+
+ optind++;
+ count = cvtnum(argv[optind]);
+ if (count < 0) {
+ printf("non-numeric length argument -- %s\n", argv[optind]);
+ return 0;
+ }
+
+ if (!Pflag && (lflag || sflag)) {
+ return command_usage(&read_cmd);
+ }
+
+ if (!lflag) {
+ pattern_count = count - pattern_offset;
+ }
+
+ if ((pattern_count < 0) || (pattern_count + pattern_offset > count)) {
+ printf("pattern verification range exceeds end of read data\n");
+ return 0;
+ }
+
+ if (!pflag) {
+ if (offset & 0x1ff) {
+ printf("offset %" PRId64 " is not sector aligned\n",
+ offset);
+ return 0;
+ }
+ if (count & 0x1ff) {
+ printf("count %d is not sector aligned\n",
+ count);
+ return 0;
+ }
+ }
+
+ buf = qemu_io_alloc(bs, count, 0xab);
+
+ gettimeofday(&t1, NULL);
+ if (pflag) {
+ cnt = do_pread(bs, buf, offset, count, &total);
+ } else if (bflag) {
+ cnt = do_load_vmstate(bs, buf, offset, count, &total);
+ } else {
+ cnt = do_read(bs, buf, offset, count, &total);
+ }
+ gettimeofday(&t2, NULL);
+
+ if (cnt < 0) {
+ printf("read failed: %s\n", strerror(-cnt));
+ goto out;
+ }
+
+ if (Pflag) {
+ 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);
+ }
+ g_free(cmp_buf);
+ }
+
+ if (qflag) {
+ goto out;
+ }
+
+ if (vflag) {
+ dump_buffer(buf, offset, count);
+ }
+
+ /* Finally, report back -- -C gives a parsable format */
+ t2 = tsub(t2, t1);
+ print_report("read", &t2, offset, count, total, cnt, Cflag);
+
+out:
+ qemu_io_free(buf);
+
+ return 0;
+}
+
+static void readv_help(void)
+{
+ printf(
+"\n"
+" reads a range of bytes from the given offset into multiple buffers\n"
+"\n"
+" Example:\n"
+" 'readv -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n"
+"\n"
+" Reads a segment of the currently open file, optionally dumping it to the\n"
+" standard output stream (with -v option) for subsequent inspection.\n"
+" Uses multiple iovec buffers if more than one byte range is specified.\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"
+" -q, -- quiet mode, do not show I/O statistics\n"
+"\n");
+}
+
+static int readv_f(BlockDriverState *bs, int argc, char **argv);
+
+static const cmdinfo_t readv_cmd = {
+ .name = "readv",
+ .cfunc = readv_f,
+ .argmin = 2,
+ .argmax = -1,
+ .args = "[-Cqv] [-P pattern ] off len [len..]",
+ .oneline = "reads a number of bytes at a specified offset",
+ .help = readv_help,
+};
+
+static int readv_f(BlockDriverState *bs, int argc, char **argv)
+{
+ struct timeval t1, t2;
+ int Cflag = 0, qflag = 0, vflag = 0;
+ int c, cnt;
+ char *buf;
+ int64_t offset;
+ /* Some compilers get confused and warn if this is not initialized. */
+ int total = 0;
+ int nr_iov;
+ QEMUIOVector qiov;
+ int pattern = 0;
+ int Pflag = 0;
+
+ while ((c = getopt(argc, argv, "CP:qv")) != EOF) {
+ switch (c) {
+ case 'C':
+ Cflag = 1;
+ break;
+ case 'P':
+ Pflag = 1;
+ pattern = parse_pattern(optarg);
+ if (pattern < 0) {
+ return 0;
+ }
+ break;
+ case 'q':
+ qflag = 1;
+ break;
+ case 'v':
+ vflag = 1;
+ break;
+ default:
+ return command_usage(&readv_cmd);
+ }
+ }
+
+ if (optind > argc - 2) {
+ return command_usage(&readv_cmd);
+ }
+
+
+ offset = cvtnum(argv[optind]);
+ if (offset < 0) {
+ printf("non-numeric length argument -- %s\n", argv[optind]);
+ return 0;
+ }
+ optind++;
+
+ if (offset & 0x1ff) {
+ printf("offset %" PRId64 " is not sector aligned\n",
+ offset);
+ return 0;
+ }
+
+ nr_iov = argc - optind;
+ buf = create_iovec(bs, &qiov, &argv[optind], nr_iov, 0xab);
+ if (buf == NULL) {
+ return 0;
+ }
+
+ gettimeofday(&t1, NULL);
+ cnt = do_aio_readv(bs, &qiov, offset, &total);
+ gettimeofday(&t2, NULL);
+
+ if (cnt < 0) {
+ printf("readv failed: %s\n", strerror(-cnt));
+ goto out;
+ }
+
+ if (Pflag) {
+ 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);
+ }
+ g_free(cmp_buf);
+ }
+
+ if (qflag) {
+ goto out;
+ }
+
+ if (vflag) {
+ dump_buffer(buf, offset, qiov.size);
+ }
+
+ /* Finally, report back -- -C gives a parsable format */
+ t2 = tsub(t2, t1);
+ print_report("read", &t2, offset, qiov.size, total, cnt, Cflag);
+
+out:
+ qemu_iovec_destroy(&qiov);
+ qemu_io_free(buf);
+ return 0;
+}
+
+static void write_help(void)
+{
+ printf(
+"\n"
+" writes a range of bytes from the given offset\n"
+"\n"
+" Example:\n"
+" 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n"
+"\n"
+" 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");
+}
+
+static int write_f(BlockDriverState *bs, int argc, char **argv);
+
+static const cmdinfo_t write_cmd = {
+ .name = "write",
+ .altname = "w",
+ .cfunc = write_f,
+ .argmin = 2,
+ .argmax = -1,
+ .args = "[-bcCpqz] [-P pattern ] off len",
+ .oneline = "writes a number of bytes at a specified offset",
+ .help = write_help,
+};
+
+static int write_f(BlockDriverState *bs, int argc, char **argv)
+{
+ struct timeval t1, t2;
+ int Cflag = 0, pflag = 0, qflag = 0, bflag = 0, Pflag = 0, zflag = 0;
+ int cflag = 0;
+ int c, cnt;
+ 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, "bcCpP:qz")) != EOF) {
+ switch (c) {
+ case 'b':
+ bflag = 1;
+ break;
+ case 'c':
+ cflag = 1;
+ break;
+ case 'C':
+ Cflag = 1;
+ break;
+ case 'p':
+ pflag = 1;
+ break;
+ case 'P':
+ Pflag = 1;
+ pattern = parse_pattern(optarg);
+ if (pattern < 0) {
+ return 0;
+ }
+ break;
+ case 'q':
+ qflag = 1;
+ break;
+ case 'z':
+ zflag = 1;
+ break;
+ default:
+ return command_usage(&write_cmd);
+ }
+ }
+
+ if (optind != argc - 2) {
+ return command_usage(&write_cmd);
+ }
+
+ 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;
+ }
+
+ offset = cvtnum(argv[optind]);
+ if (offset < 0) {
+ printf("non-numeric length argument -- %s\n", argv[optind]);
+ return 0;
+ }
+
+ optind++;
+ count = cvtnum(argv[optind]);
+ if (count < 0) {
+ printf("non-numeric length argument -- %s\n", argv[optind]);
+ return 0;
+ }
+
+ if (!pflag) {
+ if (offset & 0x1ff) {
+ printf("offset %" PRId64 " is not sector aligned\n",
+ offset);
+ return 0;
+ }
+
+ if (count & 0x1ff) {
+ printf("count %d is not sector aligned\n",
+ count);
+ return 0;
+ }
+ }
+
+ if (!zflag) {
+ buf = qemu_io_alloc(bs, count, pattern);
+ }
+
+ gettimeofday(&t1, NULL);
+ if (pflag) {
+ cnt = do_pwrite(bs, buf, offset, count, &total);
+ } else if (bflag) {
+ cnt = do_save_vmstate(bs, buf, offset, count, &total);
+ } else if (zflag) {
+ cnt = do_co_write_zeroes(bs, offset, count, &total);
+ } else if (cflag) {
+ cnt = do_write_compressed(bs, buf, offset, count, &total);
+ } else {
+ cnt = do_write(bs, buf, offset, count, &total);
+ }
+ gettimeofday(&t2, NULL);
+
+ if (cnt < 0) {
+ printf("write failed: %s\n", strerror(-cnt));
+ goto out;
+ }
+
+ if (qflag) {
+ goto out;
+ }
+
+ /* Finally, report back -- -C gives a parsable format */
+ t2 = tsub(t2, t1);
+ print_report("wrote", &t2, offset, count, total, cnt, Cflag);
+
+out:
+ if (!zflag) {
+ qemu_io_free(buf);
+ }
+
+ return 0;
+}
+
+static void
+writev_help(void)
+{
+ printf(
+"\n"
+" writes a range of bytes from the given offset source from multiple buffers\n"
+"\n"
+" Example:\n"
+" 'write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
+"\n"
+" Writes into a segment of the currently open file, using a buffer\n"
+" filled with a set pattern (0xcdcdcdcd).\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"
+"\n");
+}
+
+static int writev_f(BlockDriverState *bs, int argc, char **argv);
+
+static const cmdinfo_t writev_cmd = {
+ .name = "writev",
+ .cfunc = writev_f,
+ .argmin = 2,
+ .argmax = -1,
+ .args = "[-Cq] [-P pattern ] off len [len..]",
+ .oneline = "writes a number of bytes at a specified offset",
+ .help = writev_help,
+};
+
+static int writev_f(BlockDriverState *bs, int argc, char **argv)
+{
+ struct timeval t1, t2;
+ int Cflag = 0, qflag = 0;
+ int c, cnt;
+ char *buf;
+ int64_t offset;
+ /* Some compilers get confused and warn if this is not initialized. */
+ int total = 0;
+ int nr_iov;
+ int pattern = 0xcd;
+ QEMUIOVector qiov;
+
+ while ((c = getopt(argc, argv, "CqP:")) != EOF) {
+ switch (c) {
+ case 'C':
+ Cflag = 1;
+ break;
+ case 'q':
+ qflag = 1;
+ break;
+ case 'P':
+ pattern = parse_pattern(optarg);
+ if (pattern < 0) {
+ return 0;
+ }
+ break;
+ default:
+ return command_usage(&writev_cmd);
+ }
+ }
+
+ if (optind > argc - 2) {
+ return command_usage(&writev_cmd);
+ }
+
+ offset = cvtnum(argv[optind]);
+ if (offset < 0) {
+ printf("non-numeric length argument -- %s\n", argv[optind]);
+ return 0;
+ }
+ optind++;
+
+ if (offset & 0x1ff) {
+ printf("offset %" PRId64 " is not sector aligned\n",
+ offset);
+ return 0;
+ }
+
+ nr_iov = argc - optind;
+ buf = create_iovec(bs, &qiov, &argv[optind], nr_iov, pattern);
+ if (buf == NULL) {
+ return 0;
+ }
+
+ gettimeofday(&t1, NULL);
+ cnt = do_aio_writev(bs, &qiov, offset, &total);
+ gettimeofday(&t2, NULL);
+
+ if (cnt < 0) {
+ printf("writev failed: %s\n", strerror(-cnt));
+ goto out;
+ }
+
+ if (qflag) {
+ goto out;
+ }
+
+ /* Finally, report back -- -C gives a parsable format */
+ 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;
+}
+
+static void multiwrite_help(void)
+{
+ printf(
+"\n"
+" writes a range of bytes from the given offset source from multiple buffers,\n"
+" in a batch of requests that may be merged by qemu\n"
+"\n"
+" Example:\n"
+" 'multiwrite 512 1k 1k ; 4k 1k'\n"
+" writes 2 kB at 512 bytes and 1 kB at 4 kB into the open file\n"
+"\n"
+" Writes into a segment of the currently open file, using a buffer\n"
+" filled with a set pattern (0xcdcdcdcd). The pattern byte is increased\n"
+" by one for each request contained in the multiwrite command.\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"
+"\n");
+}
+
+static int multiwrite_f(BlockDriverState *bs, int argc, char **argv);
+
+static const cmdinfo_t multiwrite_cmd = {
+ .name = "multiwrite",
+ .cfunc = multiwrite_f,
+ .argmin = 2,
+ .argmax = -1,
+ .args = "[-Cq] [-P pattern ] off len [len..] [; off len [len..]..]",
+ .oneline = "issues multiple write requests at once",
+ .help = multiwrite_help,
+};
+
+static int multiwrite_f(BlockDriverState *bs, int argc, char **argv)
+{
+ struct timeval t1, t2;
+ int Cflag = 0, qflag = 0;
+ int c, cnt;
+ char **buf;
+ int64_t offset, first_offset = 0;
+ /* Some compilers get confused and warn if this is not initialized. */
+ int total = 0;
+ int nr_iov;
+ int nr_reqs;
+ int pattern = 0xcd;
+ QEMUIOVector *qiovs;
+ int i;
+ BlockRequest *reqs;
+
+ while ((c = getopt(argc, argv, "CqP:")) != EOF) {
+ switch (c) {
+ case 'C':
+ Cflag = 1;
+ break;
+ case 'q':
+ qflag = 1;
+ break;
+ case 'P':
+ pattern = parse_pattern(optarg);
+ if (pattern < 0) {
+ return 0;
+ }
+ break;
+ default:
+ return command_usage(&writev_cmd);
+ }
+ }
+
+ if (optind > argc - 2) {
+ return command_usage(&writev_cmd);
+ }
+
+ nr_reqs = 1;
+ for (i = optind; i < argc; i++) {
+ if (!strcmp(argv[i], ";")) {
+ nr_reqs++;
+ }
+ }
+
+ reqs = g_malloc0(nr_reqs * sizeof(*reqs));
+ buf = g_malloc0(nr_reqs * sizeof(*buf));
+ qiovs = g_malloc(nr_reqs * sizeof(*qiovs));
+
+ for (i = 0; i < nr_reqs && optind < argc; i++) {
+ int j;
+
+ /* Read the offset of the request */
+ offset = cvtnum(argv[optind]);
+ if (offset < 0) {
+ printf("non-numeric offset argument -- %s\n", argv[optind]);
+ goto out;
+ }
+ optind++;
+
+ if (offset & 0x1ff) {
+ printf("offset %lld is not sector aligned\n",
+ (long long)offset);
+ goto out;
+ }
+
+ if (i == 0) {
+ first_offset = offset;
+ }
+
+ /* Read lengths for qiov entries */
+ for (j = optind; j < argc; j++) {
+ if (!strcmp(argv[j], ";")) {
+ break;
+ }
+ }
+
+ nr_iov = j - optind;
+
+ /* Build request */
+ buf[i] = create_iovec(bs, &qiovs[i], &argv[optind], nr_iov, pattern);
+ if (buf[i] == NULL) {
+ goto out;
+ }
+
+ reqs[i].qiov = &qiovs[i];
+ reqs[i].sector = offset >> 9;
+ reqs[i].nb_sectors = reqs[i].qiov->size >> 9;
+
+ optind = j + 1;
+
+ pattern++;
+ }
+
+ /* If there were empty requests at the end, ignore them */
+ nr_reqs = i;
+
+ gettimeofday(&t1, NULL);
+ cnt = do_aio_multiwrite(bs, reqs, nr_reqs, &total);
+ gettimeofday(&t2, NULL);
+
+ if (cnt < 0) {
+ printf("aio_multiwrite failed: %s\n", strerror(-cnt));
+ goto out;
+ }
+
+ if (qflag) {
+ goto out;
+ }
+
+ /* Finally, report back -- -C gives a parsable format */
+ t2 = tsub(t2, t1);
+ print_report("wrote", &t2, first_offset, total, total, cnt, Cflag);
+out:
+ for (i = 0; i < nr_reqs; i++) {
+ qemu_io_free(buf[i]);
+ if (reqs[i].qiov != NULL) {
+ qemu_iovec_destroy(&qiovs[i]);
+ }
+ }
+ g_free(buf);
+ g_free(reqs);
+ g_free(qiovs);
+ return 0;
+}
+
+struct aio_ctx {
+ QEMUIOVector qiov;
+ int64_t offset;
+ char *buf;
+ int qflag;
+ int vflag;
+ int Cflag;
+ int Pflag;
+ int pattern;
+ struct timeval t1;
+};
+
+static void aio_write_done(void *opaque, int ret)
+{
+ struct aio_ctx *ctx = opaque;
+ struct timeval t2;
+
+ gettimeofday(&t2, NULL);
+
+
+ if (ret < 0) {
+ printf("aio_write failed: %s\n", strerror(-ret));
+ goto out;
+ }
+
+ if (ctx->qflag) {
+ goto out;
+ }
+
+ /* Finally, report back -- -C gives a parsable format */
+ t2 = tsub(t2, ctx->t1);
+ print_report("wrote", &t2, ctx->offset, ctx->qiov.size,
+ ctx->qiov.size, 1, ctx->Cflag);
+out:
+ qemu_io_free(ctx->buf);
+ qemu_iovec_destroy(&ctx->qiov);
+ g_free(ctx);
+}
+
+static void aio_read_done(void *opaque, int ret)
+{
+ struct aio_ctx *ctx = opaque;
+ struct timeval t2;
+
+ gettimeofday(&t2, NULL);
+
+ if (ret < 0) {
+ printf("readv failed: %s\n", strerror(-ret));
+ goto out;
+ }
+
+ if (ctx->Pflag) {
+ 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);
+ }
+ g_free(cmp_buf);
+ }
+
+ if (ctx->qflag) {
+ goto out;
+ }
+
+ if (ctx->vflag) {
+ dump_buffer(ctx->buf, ctx->offset, ctx->qiov.size);
+ }
+
+ /* Finally, report back -- -C gives a parsable format */
+ t2 = tsub(t2, ctx->t1);
+ print_report("read", &t2, ctx->offset, ctx->qiov.size,
+ ctx->qiov.size, 1, ctx->Cflag);
+out:
+ qemu_io_free(ctx->buf);
+ qemu_iovec_destroy(&ctx->qiov);
+ g_free(ctx);
+}
+
+static void aio_read_help(void)
+{
+ printf(
+"\n"
+" asynchronously reads a range of bytes from the given offset\n"
+"\n"
+" Example:\n"
+" 'aio_read -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n"
+"\n"
+" 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"
+" -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"
+" -q, -- quiet mode, do not show I/O statistics\n"
+"\n");
+}
+
+static int aio_read_f(BlockDriverState *bs, int argc, char **argv);
+
+static const cmdinfo_t aio_read_cmd = {
+ .name = "aio_read",
+ .cfunc = aio_read_f,
+ .argmin = 2,
+ .argmax = -1,
+ .args = "[-Cqv] [-P pattern ] off len [len..]",
+ .oneline = "asynchronously reads a number of bytes",
+ .help = aio_read_help,
+};
+
+static int aio_read_f(BlockDriverState *bs, int argc, char **argv)
+{
+ int nr_iov, c;
+ struct aio_ctx *ctx = g_new0(struct aio_ctx, 1);
+
+ while ((c = getopt(argc, argv, "CP:qv")) != EOF) {
+ switch (c) {
+ case 'C':
+ ctx->Cflag = 1;
+ break;
+ case 'P':
+ ctx->Pflag = 1;
+ ctx->pattern = parse_pattern(optarg);
+ if (ctx->pattern < 0) {
+ g_free(ctx);
+ return 0;
+ }
+ break;
+ case 'q':
+ ctx->qflag = 1;
+ break;
+ case 'v':
+ ctx->vflag = 1;
+ break;
+ default:
+ g_free(ctx);
+ return command_usage(&aio_read_cmd);
+ }
+ }
+
+ if (optind > argc - 2) {
+ 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]);
+ g_free(ctx);
+ return 0;
+ }
+ optind++;
+
+ if (ctx->offset & 0x1ff) {
+ printf("offset %" PRId64 " is not sector aligned\n",
+ ctx->offset);
+ g_free(ctx);
+ return 0;
+ }
+
+ nr_iov = argc - optind;
+ ctx->buf = create_iovec(bs, &ctx->qiov, &argv[optind], nr_iov, 0xab);
+ if (ctx->buf == NULL) {
+ g_free(ctx);
+ return 0;
+ }
+
+ gettimeofday(&ctx->t1, NULL);
+ bdrv_aio_readv(bs, ctx->offset >> 9, &ctx->qiov,
+ ctx->qiov.size >> 9, aio_read_done, ctx);
+ return 0;
+}
+
+static void aio_write_help(void)
+{
+ printf(
+"\n"
+" asynchronously writes a range of bytes from the given offset source\n"
+" from multiple buffers\n"
+"\n"
+" Example:\n"
+" 'aio_write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
+"\n"
+" 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"
+" -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"
+"\n");
+}
+
+static int aio_write_f(BlockDriverState *bs, int argc, char **argv);
+
+static const cmdinfo_t aio_write_cmd = {
+ .name = "aio_write",
+ .cfunc = aio_write_f,
+ .argmin = 2,
+ .argmax = -1,
+ .args = "[-Cq] [-P pattern ] off len [len..]",
+ .oneline = "asynchronously writes a number of bytes",
+ .help = aio_write_help,
+};
+
+static int aio_write_f(BlockDriverState *bs, int argc, char **argv)
+{
+ int nr_iov, c;
+ int pattern = 0xcd;
+ struct aio_ctx *ctx = g_new0(struct aio_ctx, 1);
+
+ while ((c = getopt(argc, argv, "CqP:")) != EOF) {
+ switch (c) {
+ case 'C':
+ ctx->Cflag = 1;
+ break;
+ case 'q':
+ ctx->qflag = 1;
+ break;
+ case 'P':
+ pattern = parse_pattern(optarg);
+ if (pattern < 0) {
+ g_free(ctx);
+ return 0;
+ }
+ break;
+ default:
+ g_free(ctx);
+ return command_usage(&aio_write_cmd);
+ }
+ }
+
+ if (optind > argc - 2) {
+ 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]);
+ g_free(ctx);
+ return 0;
+ }
+ optind++;
+
+ if (ctx->offset & 0x1ff) {
+ printf("offset %" PRId64 " is not sector aligned\n",
+ ctx->offset);
+ g_free(ctx);
+ return 0;
+ }
+
+ nr_iov = argc - optind;
+ ctx->buf = create_iovec(bs, &ctx->qiov, &argv[optind], nr_iov, pattern);
+ if (ctx->buf == NULL) {
+ g_free(ctx);
+ return 0;
+ }
+
+ gettimeofday(&ctx->t1, NULL);
+ bdrv_aio_writev(bs, ctx->offset >> 9, &ctx->qiov,
+ ctx->qiov.size >> 9, aio_write_done, ctx);
+ return 0;
+}
+
+static int aio_flush_f(BlockDriverState *bs, int argc, char **argv)
+{
+ bdrv_drain_all();
+ return 0;
+}
+
+static const cmdinfo_t aio_flush_cmd = {
+ .name = "aio_flush",
+ .cfunc = aio_flush_f,
+ .oneline = "completes all outstanding aio requests"
+};
+
+static int flush_f(BlockDriverState *bs, int argc, char **argv)
+{
+ bdrv_flush(bs);
+ return 0;
+}
+
+static const cmdinfo_t flush_cmd = {
+ .name = "flush",
+ .altname = "f",
+ .cfunc = flush_f,
+ .oneline = "flush all in-core file state to disk",
+};
+
+static int truncate_f(BlockDriverState *bs, int argc, char **argv)
+{
+ int64_t offset;
+ int ret;
+
+ offset = cvtnum(argv[1]);
+ if (offset < 0) {
+ printf("non-numeric truncate argument -- %s\n", argv[1]);
+ return 0;
+ }
+
+ ret = bdrv_truncate(bs, offset);
+ if (ret < 0) {
+ printf("truncate: %s\n", strerror(-ret));
+ return 0;
+ }
+
+ return 0;
+}
+
+static const cmdinfo_t truncate_cmd = {
+ .name = "truncate",
+ .altname = "t",
+ .cfunc = truncate_f,
+ .argmin = 1,
+ .argmax = 1,
+ .args = "off",
+ .oneline = "truncates the current file at the given offset",
+};
+
+static int length_f(BlockDriverState *bs, int argc, char **argv)
+{
+ int64_t size;
+ char s1[64];
+
+ size = bdrv_getlength(bs);
+ if (size < 0) {
+ printf("getlength: %s\n", strerror(-size));
+ return 0;
+ }
+
+ cvtstr(size, s1, sizeof(s1));
+ printf("%s\n", s1);
+ return 0;
+}
+
+
+static const cmdinfo_t length_cmd = {
+ .name = "length",
+ .altname = "l",
+ .cfunc = length_f,
+ .oneline = "gets the length of the current file",
+};
+
+
+static int info_f(BlockDriverState *bs, int argc, char **argv)
+{
+ BlockDriverInfo bdi;
+ char s1[64], s2[64];
+ int ret;
+
+ if (bs->drv && bs->drv->format_name) {
+ printf("format name: %s\n", bs->drv->format_name);
+ }
+ if (bs->drv && bs->drv->protocol_name) {
+ printf("format name: %s\n", bs->drv->protocol_name);
+ }
+
+ ret = bdrv_get_info(bs, &bdi);
+ if (ret) {
+ return 0;
+ }
+
+ cvtstr(bdi.cluster_size, s1, sizeof(s1));
+ cvtstr(bdi.vm_state_offset, s2, sizeof(s2));
+
+ printf("cluster size: %s\n", s1);
+ printf("vm state offset: %s\n", s2);
+
+ return 0;
+}
+
+
+
+static const cmdinfo_t info_cmd = {
+ .name = "info",
+ .altname = "i",
+ .cfunc = info_f,
+ .oneline = "prints information about the current file",
+};
+
+static void discard_help(void)
+{
+ printf(
+"\n"
+" discards a range of bytes from the given offset\n"
+"\n"
+" Example:\n"
+" 'discard 512 1k' - discards 1 kilobyte from 512 bytes into the file\n"
+"\n"
+" Discards a segment of the currently open file.\n"
+" -C, -- report statistics in a machine parsable format\n"
+" -q, -- quiet mode, do not show I/O statistics\n"
+"\n");
+}
+
+static int discard_f(BlockDriverState *bs, int argc, char **argv);
+
+static const cmdinfo_t discard_cmd = {
+ .name = "discard",
+ .altname = "d",
+ .cfunc = discard_f,
+ .argmin = 2,
+ .argmax = -1,
+ .args = "[-Cq] off len",
+ .oneline = "discards a number of bytes at a specified offset",
+ .help = discard_help,
+};
+
+static int discard_f(BlockDriverState *bs, int argc, char **argv)
+{
+ struct timeval t1, t2;
+ int Cflag = 0, qflag = 0;
+ int c, ret;
+ int64_t offset;
+ int count;
+
+ while ((c = getopt(argc, argv, "Cq")) != EOF) {
+ switch (c) {
+ case 'C':
+ Cflag = 1;
+ break;
+ case 'q':
+ qflag = 1;
+ break;
+ default:
+ return command_usage(&discard_cmd);
+ }
+ }
+
+ if (optind != argc - 2) {
+ return command_usage(&discard_cmd);
+ }
+
+ offset = cvtnum(argv[optind]);
+ if (offset < 0) {
+ printf("non-numeric length argument -- %s\n", argv[optind]);
+ return 0;
+ }
+
+ optind++;
+ count = cvtnum(argv[optind]);
+ if (count < 0) {
+ printf("non-numeric length argument -- %s\n", argv[optind]);
+ return 0;
+ }
+
+ gettimeofday(&t1, NULL);
+ ret = bdrv_discard(bs, offset >> BDRV_SECTOR_BITS,
+ count >> BDRV_SECTOR_BITS);
+ gettimeofday(&t2, NULL);
+
+ if (ret < 0) {
+ printf("discard failed: %s\n", strerror(-ret));
+ goto out;
+ }
+
+ /* Finally, report back -- -C gives a parsable format */
+ if (!qflag) {
+ t2 = tsub(t2, t1);
+ print_report("discard", &t2, offset, count, count, 1, Cflag);
+ }
+
+out:
+ return 0;
+}
+
+static int alloc_f(BlockDriverState *bs, int argc, char **argv)
+{
+ int64_t offset, sector_num;
+ int nb_sectors, remaining;
+ char s1[64];
+ int num, sum_alloc;
+ int ret;
+
+ offset = cvtnum(argv[1]);
+ if (offset < 0) {
+ printf("non-numeric offset argument -- %s\n", argv[1]);
+ return 0;
+ } else if (offset & 0x1ff) {
+ printf("offset %" PRId64 " is not sector aligned\n",
+ offset);
+ return 0;
+ }
+
+ if (argc == 3) {
+ nb_sectors = cvtnum(argv[2]);
+ if (nb_sectors < 0) {
+ printf("non-numeric length argument -- %s\n", argv[2]);
+ return 0;
+ }
+ } else {
+ nb_sectors = 1;
+ }
+
+ remaining = nb_sectors;
+ sum_alloc = 0;
+ sector_num = offset >> 9;
+ while (remaining) {
+ 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));
+
+ printf("%d/%d sectors allocated at offset %s\n",
+ sum_alloc, nb_sectors, s1);
+ return 0;
+}
+
+static const cmdinfo_t alloc_cmd = {
+ .name = "alloc",
+ .altname = "a",
+ .argmin = 1,
+ .argmax = 2,
+ .cfunc = alloc_f,
+ .args = "off [sectors]",
+ .oneline = "checks if a sector is present in the file",
+};
+
+
+static int map_is_allocated(BlockDriverState *bs, int64_t sector_num,
+ int64_t nb_sectors, int64_t *pnum)
+{
+ int num, num_checked;
+ int ret, firstret;
+
+ num_checked = MIN(nb_sectors, INT_MAX);
+ ret = bdrv_is_allocated(bs, sector_num, num_checked, &num);
+ if (ret < 0) {
+ return ret;
+ }
+
+ firstret = ret;
+ *pnum = num;
+
+ while (nb_sectors > 0 && ret == firstret) {
+ sector_num += num;
+ nb_sectors -= num;
+
+ num_checked = MIN(nb_sectors, INT_MAX);
+ ret = bdrv_is_allocated(bs, sector_num, num_checked, &num);
+ if (ret == firstret) {
+ *pnum += num;
+ } else {
+ break;
+ }
+ }
+
+ return firstret;
+}
+
+static int map_f(BlockDriverState *bs, int argc, char **argv)
+{
+ int64_t offset;
+ int64_t nb_sectors;
+ char s1[64];
+ int64_t num;
+ int ret;
+ const char *retstr;
+
+ offset = 0;
+ nb_sectors = bs->total_sectors;
+
+ do {
+ ret = map_is_allocated(bs, offset, nb_sectors, &num);
+ if (ret < 0) {
+ error_report("Failed to get allocation status: %s", strerror(-ret));
+ return 0;
+ }
+
+ retstr = ret ? " allocated" : "not allocated";
+ cvtstr(offset << 9ULL, s1, sizeof(s1));
+ printf("[% 24" PRId64 "] % 8" PRId64 "/% 8" PRId64 " sectors %s "
+ "at offset %s (%d)\n",
+ offset << 9ULL, num, nb_sectors, retstr, s1, ret);
+
+ offset += num;
+ nb_sectors -= num;
+ } while (offset < bs->total_sectors);
+
+ return 0;
+}
+
+static const cmdinfo_t map_cmd = {
+ .name = "map",
+ .argmin = 0,
+ .argmax = 0,
+ .cfunc = map_f,
+ .args = "",
+ .oneline = "prints the allocated areas of a file",
+};
+
+static int break_f(BlockDriverState *bs, 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(BlockDriverState *bs, 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(BlockDriverState *bs, 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(BlockDriverState *bs, 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 init_check_command(BlockDriverState *bs, const cmdinfo_t *ct)
+{
+ if (ct->flags & CMD_FLAG_GLOBAL) {
+ return 1;
+ }
+ if (!(ct->flags & CMD_NOFILE_OK) && !bs) {
+ fprintf(stderr, "no file open, try 'help open'\n");
+ return 0;
+ }
+ return 1;
+}
+
+static void __attribute((constructor)) init_qemuio_commands(void)
+{
+ /* initialize commands */
+ help_init();
+ add_command(&read_cmd);
+ add_command(&readv_cmd);
+ add_command(&write_cmd);
+ add_command(&writev_cmd);
+ add_command(&multiwrite_cmd);
+ add_command(&aio_read_cmd);
+ add_command(&aio_write_cmd);
+ add_command(&aio_flush_cmd);
+ add_command(&flush_cmd);
+ add_command(&truncate_cmd);
+ add_command(&length_cmd);
+ add_command(&info_cmd);
+ 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_check_command(init_check_command);
+}
diff --git a/qemu-io.c b/qemu-io.c
index 39d7063..14eef2c 100644
--- a/qemu-io.c
+++ b/qemu-io.c
@@ -27,1786 +27,7 @@
char *progname;
BlockDriverState *qemuio_bs;
-static int misalign;
-
-static int64_t cvtnum(const char *s)
-{
- char *end;
- return strtosz_suffix(s, &end, STRTOSZ_DEFSUFFIX_B);
-}
-
-/*
- * Parse the pattern argument to various sub-commands.
- *
- * Because the pattern is used as an argument to memset it must evaluate
- * to an unsigned integer that fits into a single byte.
- */
-static int parse_pattern(const char *arg)
-{
- char *endptr = NULL;
- long pattern;
-
- pattern = strtol(arg, &endptr, 0);
- if (pattern < 0 || pattern > UCHAR_MAX || *endptr != '\0') {
- printf("%s is not a valid pattern byte\n", arg);
- return -1;
- }
-
- return pattern;
-}
-
-/*
- * Memory allocation helpers.
- *
- * Make sure memory is aligned by default, or purposefully misaligned if
- * that is specified on the command line.
- */
-
-#define MISALIGN_OFFSET 16
-static void *qemu_io_alloc(BlockDriverState *bs, size_t len, int pattern)
-{
- void *buf;
-
- if (misalign) {
- len += MISALIGN_OFFSET;
- }
- buf = qemu_blockalign(bs, len);
- memset(buf, pattern, len);
- if (misalign) {
- buf += MISALIGN_OFFSET;
- }
- return buf;
-}
-
-static void qemu_io_free(void *p)
-{
- if (misalign) {
- p -= MISALIGN_OFFSET;
- }
- qemu_vfree(p);
-}
-
-static void dump_buffer(const void *buffer, int64_t offset, int len)
-{
- int i, j;
- const uint8_t *p;
-
- for (i = 0, p = buffer; i < len; i += 16) {
- const uint8_t *s = p;
-
- printf("%08" PRIx64 ": ", offset + i);
- for (j = 0; j < 16 && i + j < len; j++, p++) {
- printf("%02x ", *p);
- }
- printf(" ");
- for (j = 0; j < 16 && i + j < len; j++, s++) {
- if (isalnum(*s)) {
- printf("%c", *s);
- } else {
- printf(".");
- }
- }
- printf("\n");
- }
-}
-
-static void print_report(const char *op, struct timeval *t, int64_t offset,
- int count, int total, int cnt, int Cflag)
-{
- char s1[64], s2[64], ts[64];
-
- timestr(t, ts, sizeof(ts), Cflag ? VERBOSE_FIXED_TIME : 0);
- if (!Cflag) {
- cvtstr((double)total, s1, sizeof(s1));
- cvtstr(tdiv((double)total, *t), s2, sizeof(s2));
- printf("%s %d/%d bytes at offset %" PRId64 "\n",
- op, total, count, offset);
- printf("%s, %d ops; %s (%s/sec and %.4f ops/sec)\n",
- s1, cnt, ts, s2, tdiv((double)cnt, *t));
- } else {/* bytes,ops,time,bytes/sec,ops/sec */
- printf("%d,%d,%s,%.3f,%.3f\n",
- total, cnt, ts,
- tdiv((double)total, *t),
- tdiv((double)cnt, *t));
- }
-}
-
-/*
- * Parse multiple length statements for vectored I/O, and construct an I/O
- * vector matching it.
- */
-static void *
-create_iovec(BlockDriverState *bs, QEMUIOVector *qiov, char **argv, int nr_iov,
- int pattern)
-{
- size_t *sizes = g_new0(size_t, nr_iov);
- size_t count = 0;
- void *buf = NULL;
- void *p;
- int i;
-
- for (i = 0; i < nr_iov; i++) {
- char *arg = argv[i];
- int64_t len;
-
- len = cvtnum(arg);
- if (len < 0) {
- printf("non-numeric length argument -- %s\n", arg);
- goto fail;
- }
-
- /* should be SIZE_T_MAX, but that doesn't exist */
- if (len > INT_MAX) {
- printf("too large length argument -- %s\n", arg);
- goto fail;
- }
-
- if (len & 0x1ff) {
- printf("length argument %" PRId64
- " is not sector aligned\n", len);
- goto fail;
- }
-
- sizes[i] = len;
- count += len;
- }
-
- qemu_iovec_init(qiov, nr_iov);
-
- buf = p = qemu_io_alloc(bs, count, pattern);
-
- for (i = 0; i < nr_iov; i++) {
- qemu_iovec_add(qiov, p, sizes[i]);
- p += sizes[i];
- }
-
-fail:
- g_free(sizes);
- return buf;
-}
-
-static int do_read(BlockDriverState *bs, char *buf, int64_t offset, int count,
- int *total)
-{
- int ret;
-
- ret = bdrv_read(bs, offset >> 9, (uint8_t *)buf, count >> 9);
- if (ret < 0) {
- return ret;
- }
- *total = count;
- return 1;
-}
-
-static int do_write(BlockDriverState *bs, char *buf, int64_t offset, int count,
- int *total)
-{
- int ret;
-
- ret = bdrv_write(bs, offset >> 9, (uint8_t *)buf, count >> 9);
- if (ret < 0) {
- return ret;
- }
- *total = count;
- return 1;
-}
-
-static int do_pread(BlockDriverState *bs, char *buf, int64_t offset, int count,
- int *total)
-{
- *total = bdrv_pread(bs, offset, (uint8_t *)buf, count);
- if (*total < 0) {
- return *total;
- }
- return 1;
-}
-
-static int do_pwrite(BlockDriverState *bs, char *buf, int64_t offset, int count,
- int *total)
-{
- *total = bdrv_pwrite(bs, offset, (uint8_t *)buf, count);
- if (*total < 0) {
- return *total;
- }
- return 1;
-}
-
-typedef struct {
- BlockDriverState *bs;
- 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(data->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(BlockDriverState *bs, int64_t offset, int count,
- int *total)
-{
- Coroutine *co;
- CoWriteZeroes data = {
- .bs = bs,
- .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(BlockDriverState *bs, 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(BlockDriverState *bs, char *buf, int64_t offset,
- int count, int *total)
-{
- *total = bdrv_load_vmstate(bs, (uint8_t *)buf, offset, count);
- if (*total < 0) {
- return *total;
- }
- return 1;
-}
-
-static int do_save_vmstate(BlockDriverState *bs, char *buf, int64_t offset,
- int count, int *total)
-{
- *total = bdrv_save_vmstate(bs, (uint8_t *)buf, offset, count);
- if (*total < 0) {
- return *total;
- }
- return 1;
-}
-
-#define NOT_DONE 0x7fffffff
-static void aio_rw_done(void *opaque, int ret)
-{
- *(int *)opaque = ret;
-}
-
-static int do_aio_readv(BlockDriverState *bs, QEMUIOVector *qiov,
- int64_t offset, int *total)
-{
- int async_ret = NOT_DONE;
-
- bdrv_aio_readv(bs, offset >> 9, qiov, qiov->size >> 9,
- aio_rw_done, &async_ret);
- while (async_ret == NOT_DONE) {
- main_loop_wait(false);
- }
-
- *total = qiov->size;
- return async_ret < 0 ? async_ret : 1;
-}
-
-static int do_aio_writev(BlockDriverState *bs, QEMUIOVector *qiov,
- int64_t offset, int *total)
-{
- int async_ret = NOT_DONE;
-
- bdrv_aio_writev(bs, offset >> 9, qiov, qiov->size >> 9,
- aio_rw_done, &async_ret);
- while (async_ret == NOT_DONE) {
- main_loop_wait(false);
- }
-
- *total = qiov->size;
- return async_ret < 0 ? async_ret : 1;
-}
-
-struct multiwrite_async_ret {
- int num_done;
- int error;
-};
-
-static void multiwrite_cb(void *opaque, int ret)
-{
- struct multiwrite_async_ret *async_ret = opaque;
-
- async_ret->num_done++;
- if (ret < 0) {
- async_ret->error = ret;
- }
-}
-
-static int do_aio_multiwrite(BlockDriverState *bs, BlockRequest* reqs,
- int num_reqs, int *total)
-{
- int i, ret;
- struct multiwrite_async_ret async_ret = {
- .num_done = 0,
- .error = 0,
- };
-
- *total = 0;
- for (i = 0; i < num_reqs; i++) {
- reqs[i].cb = multiwrite_cb;
- reqs[i].opaque = &async_ret;
- *total += reqs[i].qiov->size;
- }
-
- ret = bdrv_aio_multiwrite(bs, reqs, num_reqs);
- if (ret < 0) {
- return ret;
- }
-
- while (async_ret.num_done < num_reqs) {
- main_loop_wait(false);
- }
-
- return async_ret.error < 0 ? async_ret.error : 1;
-}
-
-static void read_help(void)
-{
- printf(
-"\n"
-" reads a range of bytes from the given offset\n"
-"\n"
-" Example:\n"
-" 'read -v 512 1k' - dumps 1 kilobyte read from 512 bytes into the file\n"
-"\n"
-" Reads a segment of the currently open file, optionally dumping it to the\n"
-" standard output stream (with -v option) for subsequent inspection.\n"
-" -b, -- read from the VM state rather than the virtual disk\n"
-" -C, -- report statistics in a machine parsable format\n"
-" -l, -- length for pattern verification (only with -P)\n"
-" -p, -- use bdrv_pread to read the file\n"
-" -P, -- use a pattern to verify read data\n"
-" -q, -- quiet mode, do not show I/O statistics\n"
-" -s, -- start offset for pattern verification (only with -P)\n"
-" -v, -- dump buffer to standard output\n"
-"\n");
-}
-
-static int read_f(BlockDriverState *bs, int argc, char **argv);
-
-static const cmdinfo_t read_cmd = {
- .name = "read",
- .altname = "r",
- .cfunc = read_f,
- .argmin = 2,
- .argmax = -1,
- .args = "[-abCpqv] [-P pattern [-s off] [-l len]] off len",
- .oneline = "reads a number of bytes at a specified offset",
- .help = read_help,
-};
-
-static int read_f(BlockDriverState *bs, int argc, char **argv)
-{
- struct timeval t1, t2;
- int Cflag = 0, pflag = 0, qflag = 0, vflag = 0;
- int Pflag = 0, sflag = 0, lflag = 0, bflag = 0;
- int c, cnt;
- char *buf;
- int64_t offset;
- int count;
- /* Some compilers get confused and warn if this is not initialized. */
- int total = 0;
- int pattern = 0, pattern_offset = 0, pattern_count = 0;
-
- while ((c = getopt(argc, argv, "bCl:pP:qs:v")) != EOF) {
- switch (c) {
- case 'b':
- bflag = 1;
- break;
- case 'C':
- Cflag = 1;
- break;
- case 'l':
- lflag = 1;
- pattern_count = cvtnum(optarg);
- if (pattern_count < 0) {
- printf("non-numeric length argument -- %s\n", optarg);
- return 0;
- }
- break;
- case 'p':
- pflag = 1;
- break;
- case 'P':
- Pflag = 1;
- pattern = parse_pattern(optarg);
- if (pattern < 0) {
- return 0;
- }
- break;
- case 'q':
- qflag = 1;
- break;
- case 's':
- sflag = 1;
- pattern_offset = cvtnum(optarg);
- if (pattern_offset < 0) {
- printf("non-numeric length argument -- %s\n", optarg);
- return 0;
- }
- break;
- case 'v':
- vflag = 1;
- break;
- default:
- return command_usage(&read_cmd);
- }
- }
-
- if (optind != argc - 2) {
- return command_usage(&read_cmd);
- }
-
- if (bflag && pflag) {
- printf("-b and -p cannot be specified at the same time\n");
- return 0;
- }
-
- offset = cvtnum(argv[optind]);
- if (offset < 0) {
- printf("non-numeric length argument -- %s\n", argv[optind]);
- return 0;
- }
-
- optind++;
- count = cvtnum(argv[optind]);
- if (count < 0) {
- printf("non-numeric length argument -- %s\n", argv[optind]);
- return 0;
- }
-
- if (!Pflag && (lflag || sflag)) {
- return command_usage(&read_cmd);
- }
-
- if (!lflag) {
- pattern_count = count - pattern_offset;
- }
-
- if ((pattern_count < 0) || (pattern_count + pattern_offset > count)) {
- printf("pattern verification range exceeds end of read data\n");
- return 0;
- }
-
- if (!pflag) {
- if (offset & 0x1ff) {
- printf("offset %" PRId64 " is not sector aligned\n",
- offset);
- return 0;
- }
- if (count & 0x1ff) {
- printf("count %d is not sector aligned\n",
- count);
- return 0;
- }
- }
-
- buf = qemu_io_alloc(bs, count, 0xab);
-
- gettimeofday(&t1, NULL);
- if (pflag) {
- cnt = do_pread(bs, buf, offset, count, &total);
- } else if (bflag) {
- cnt = do_load_vmstate(bs, buf, offset, count, &total);
- } else {
- cnt = do_read(bs, buf, offset, count, &total);
- }
- gettimeofday(&t2, NULL);
-
- if (cnt < 0) {
- printf("read failed: %s\n", strerror(-cnt));
- goto out;
- }
-
- if (Pflag) {
- 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);
- }
- g_free(cmp_buf);
- }
-
- if (qflag) {
- goto out;
- }
-
- if (vflag) {
- dump_buffer(buf, offset, count);
- }
-
- /* Finally, report back -- -C gives a parsable format */
- t2 = tsub(t2, t1);
- print_report("read", &t2, offset, count, total, cnt, Cflag);
-
-out:
- qemu_io_free(buf);
-
- return 0;
-}
-
-static void readv_help(void)
-{
- printf(
-"\n"
-" reads a range of bytes from the given offset into multiple buffers\n"
-"\n"
-" Example:\n"
-" 'readv -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n"
-"\n"
-" Reads a segment of the currently open file, optionally dumping it to the\n"
-" standard output stream (with -v option) for subsequent inspection.\n"
-" Uses multiple iovec buffers if more than one byte range is specified.\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"
-" -q, -- quiet mode, do not show I/O statistics\n"
-"\n");
-}
-
-static int readv_f(BlockDriverState *bs, int argc, char **argv);
-
-static const cmdinfo_t readv_cmd = {
- .name = "readv",
- .cfunc = readv_f,
- .argmin = 2,
- .argmax = -1,
- .args = "[-Cqv] [-P pattern ] off len [len..]",
- .oneline = "reads a number of bytes at a specified offset",
- .help = readv_help,
-};
-
-static int readv_f(BlockDriverState *bs, int argc, char **argv)
-{
- struct timeval t1, t2;
- int Cflag = 0, qflag = 0, vflag = 0;
- int c, cnt;
- char *buf;
- int64_t offset;
- /* Some compilers get confused and warn if this is not initialized. */
- int total = 0;
- int nr_iov;
- QEMUIOVector qiov;
- int pattern = 0;
- int Pflag = 0;
-
- while ((c = getopt(argc, argv, "CP:qv")) != EOF) {
- switch (c) {
- case 'C':
- Cflag = 1;
- break;
- case 'P':
- Pflag = 1;
- pattern = parse_pattern(optarg);
- if (pattern < 0) {
- return 0;
- }
- break;
- case 'q':
- qflag = 1;
- break;
- case 'v':
- vflag = 1;
- break;
- default:
- return command_usage(&readv_cmd);
- }
- }
-
- if (optind > argc - 2) {
- return command_usage(&readv_cmd);
- }
-
-
- offset = cvtnum(argv[optind]);
- if (offset < 0) {
- printf("non-numeric length argument -- %s\n", argv[optind]);
- return 0;
- }
- optind++;
-
- if (offset & 0x1ff) {
- printf("offset %" PRId64 " is not sector aligned\n",
- offset);
- return 0;
- }
-
- nr_iov = argc - optind;
- buf = create_iovec(bs, &qiov, &argv[optind], nr_iov, 0xab);
- if (buf == NULL) {
- return 0;
- }
-
- gettimeofday(&t1, NULL);
- cnt = do_aio_readv(bs, &qiov, offset, &total);
- gettimeofday(&t2, NULL);
-
- if (cnt < 0) {
- printf("readv failed: %s\n", strerror(-cnt));
- goto out;
- }
-
- if (Pflag) {
- 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);
- }
- g_free(cmp_buf);
- }
-
- if (qflag) {
- goto out;
- }
-
- if (vflag) {
- dump_buffer(buf, offset, qiov.size);
- }
-
- /* Finally, report back -- -C gives a parsable format */
- t2 = tsub(t2, t1);
- print_report("read", &t2, offset, qiov.size, total, cnt, Cflag);
-
-out:
- qemu_iovec_destroy(&qiov);
- qemu_io_free(buf);
- return 0;
-}
-
-static void write_help(void)
-{
- printf(
-"\n"
-" writes a range of bytes from the given offset\n"
-"\n"
-" Example:\n"
-" 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n"
-"\n"
-" 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");
-}
-
-static int write_f(BlockDriverState *bs, int argc, char **argv);
-
-static const cmdinfo_t write_cmd = {
- .name = "write",
- .altname = "w",
- .cfunc = write_f,
- .argmin = 2,
- .argmax = -1,
- .args = "[-bcCpqz] [-P pattern ] off len",
- .oneline = "writes a number of bytes at a specified offset",
- .help = write_help,
-};
-
-static int write_f(BlockDriverState *bs, int argc, char **argv)
-{
- struct timeval t1, t2;
- int Cflag = 0, pflag = 0, qflag = 0, bflag = 0, Pflag = 0, zflag = 0;
- int cflag = 0;
- int c, cnt;
- 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, "bcCpP:qz")) != EOF) {
- switch (c) {
- case 'b':
- bflag = 1;
- break;
- case 'c':
- cflag = 1;
- break;
- case 'C':
- Cflag = 1;
- break;
- case 'p':
- pflag = 1;
- break;
- case 'P':
- Pflag = 1;
- pattern = parse_pattern(optarg);
- if (pattern < 0) {
- return 0;
- }
- break;
- case 'q':
- qflag = 1;
- break;
- case 'z':
- zflag = 1;
- break;
- default:
- return command_usage(&write_cmd);
- }
- }
-
- if (optind != argc - 2) {
- return command_usage(&write_cmd);
- }
-
- 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;
- }
-
- offset = cvtnum(argv[optind]);
- if (offset < 0) {
- printf("non-numeric length argument -- %s\n", argv[optind]);
- return 0;
- }
-
- optind++;
- count = cvtnum(argv[optind]);
- if (count < 0) {
- printf("non-numeric length argument -- %s\n", argv[optind]);
- return 0;
- }
-
- if (!pflag) {
- if (offset & 0x1ff) {
- printf("offset %" PRId64 " is not sector aligned\n",
- offset);
- return 0;
- }
-
- if (count & 0x1ff) {
- printf("count %d is not sector aligned\n",
- count);
- return 0;
- }
- }
-
- if (!zflag) {
- buf = qemu_io_alloc(bs, count, pattern);
- }
-
- gettimeofday(&t1, NULL);
- if (pflag) {
- cnt = do_pwrite(bs, buf, offset, count, &total);
- } else if (bflag) {
- cnt = do_save_vmstate(bs, buf, offset, count, &total);
- } else if (zflag) {
- cnt = do_co_write_zeroes(bs, offset, count, &total);
- } else if (cflag) {
- cnt = do_write_compressed(bs, buf, offset, count, &total);
- } else {
- cnt = do_write(bs, buf, offset, count, &total);
- }
- gettimeofday(&t2, NULL);
-
- if (cnt < 0) {
- printf("write failed: %s\n", strerror(-cnt));
- goto out;
- }
-
- if (qflag) {
- goto out;
- }
-
- /* Finally, report back -- -C gives a parsable format */
- t2 = tsub(t2, t1);
- print_report("wrote", &t2, offset, count, total, cnt, Cflag);
-
-out:
- if (!zflag) {
- qemu_io_free(buf);
- }
-
- return 0;
-}
-
-static void
-writev_help(void)
-{
- printf(
-"\n"
-" writes a range of bytes from the given offset source from multiple buffers\n"
-"\n"
-" Example:\n"
-" 'write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
-"\n"
-" Writes into a segment of the currently open file, using a buffer\n"
-" filled with a set pattern (0xcdcdcdcd).\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"
-"\n");
-}
-
-static int writev_f(BlockDriverState *bs, int argc, char **argv);
-
-static const cmdinfo_t writev_cmd = {
- .name = "writev",
- .cfunc = writev_f,
- .argmin = 2,
- .argmax = -1,
- .args = "[-Cq] [-P pattern ] off len [len..]",
- .oneline = "writes a number of bytes at a specified offset",
- .help = writev_help,
-};
-
-static int writev_f(BlockDriverState *bs, int argc, char **argv)
-{
- struct timeval t1, t2;
- int Cflag = 0, qflag = 0;
- int c, cnt;
- char *buf;
- int64_t offset;
- /* Some compilers get confused and warn if this is not initialized. */
- int total = 0;
- int nr_iov;
- int pattern = 0xcd;
- QEMUIOVector qiov;
-
- while ((c = getopt(argc, argv, "CqP:")) != EOF) {
- switch (c) {
- case 'C':
- Cflag = 1;
- break;
- case 'q':
- qflag = 1;
- break;
- case 'P':
- pattern = parse_pattern(optarg);
- if (pattern < 0) {
- return 0;
- }
- break;
- default:
- return command_usage(&writev_cmd);
- }
- }
-
- if (optind > argc - 2) {
- return command_usage(&writev_cmd);
- }
-
- offset = cvtnum(argv[optind]);
- if (offset < 0) {
- printf("non-numeric length argument -- %s\n", argv[optind]);
- return 0;
- }
- optind++;
-
- if (offset & 0x1ff) {
- printf("offset %" PRId64 " is not sector aligned\n",
- offset);
- return 0;
- }
-
- nr_iov = argc - optind;
- buf = create_iovec(bs, &qiov, &argv[optind], nr_iov, pattern);
- if (buf == NULL) {
- return 0;
- }
-
- gettimeofday(&t1, NULL);
- cnt = do_aio_writev(bs, &qiov, offset, &total);
- gettimeofday(&t2, NULL);
-
- if (cnt < 0) {
- printf("writev failed: %s\n", strerror(-cnt));
- goto out;
- }
-
- if (qflag) {
- goto out;
- }
-
- /* Finally, report back -- -C gives a parsable format */
- 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;
-}
-
-static void multiwrite_help(void)
-{
- printf(
-"\n"
-" writes a range of bytes from the given offset source from multiple buffers,\n"
-" in a batch of requests that may be merged by qemu\n"
-"\n"
-" Example:\n"
-" 'multiwrite 512 1k 1k ; 4k 1k'\n"
-" writes 2 kB at 512 bytes and 1 kB at 4 kB into the open file\n"
-"\n"
-" Writes into a segment of the currently open file, using a buffer\n"
-" filled with a set pattern (0xcdcdcdcd). The pattern byte is increased\n"
-" by one for each request contained in the multiwrite command.\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"
-"\n");
-}
-
-static int multiwrite_f(BlockDriverState *bs, int argc, char **argv);
-
-static const cmdinfo_t multiwrite_cmd = {
- .name = "multiwrite",
- .cfunc = multiwrite_f,
- .argmin = 2,
- .argmax = -1,
- .args = "[-Cq] [-P pattern ] off len [len..] [; off len [len..]..]",
- .oneline = "issues multiple write requests at once",
- .help = multiwrite_help,
-};
-
-static int multiwrite_f(BlockDriverState *bs, int argc, char **argv)
-{
- struct timeval t1, t2;
- int Cflag = 0, qflag = 0;
- int c, cnt;
- char **buf;
- int64_t offset, first_offset = 0;
- /* Some compilers get confused and warn if this is not initialized. */
- int total = 0;
- int nr_iov;
- int nr_reqs;
- int pattern = 0xcd;
- QEMUIOVector *qiovs;
- int i;
- BlockRequest *reqs;
-
- while ((c = getopt(argc, argv, "CqP:")) != EOF) {
- switch (c) {
- case 'C':
- Cflag = 1;
- break;
- case 'q':
- qflag = 1;
- break;
- case 'P':
- pattern = parse_pattern(optarg);
- if (pattern < 0) {
- return 0;
- }
- break;
- default:
- return command_usage(&writev_cmd);
- }
- }
-
- if (optind > argc - 2) {
- return command_usage(&writev_cmd);
- }
-
- nr_reqs = 1;
- for (i = optind; i < argc; i++) {
- if (!strcmp(argv[i], ";")) {
- nr_reqs++;
- }
- }
-
- reqs = g_malloc0(nr_reqs * sizeof(*reqs));
- buf = g_malloc0(nr_reqs * sizeof(*buf));
- qiovs = g_malloc(nr_reqs * sizeof(*qiovs));
-
- for (i = 0; i < nr_reqs && optind < argc; i++) {
- int j;
-
- /* Read the offset of the request */
- offset = cvtnum(argv[optind]);
- if (offset < 0) {
- printf("non-numeric offset argument -- %s\n", argv[optind]);
- goto out;
- }
- optind++;
-
- if (offset & 0x1ff) {
- printf("offset %lld is not sector aligned\n",
- (long long)offset);
- goto out;
- }
-
- if (i == 0) {
- first_offset = offset;
- }
-
- /* Read lengths for qiov entries */
- for (j = optind; j < argc; j++) {
- if (!strcmp(argv[j], ";")) {
- break;
- }
- }
-
- nr_iov = j - optind;
-
- /* Build request */
- buf[i] = create_iovec(bs, &qiovs[i], &argv[optind], nr_iov, pattern);
- if (buf[i] == NULL) {
- goto out;
- }
-
- reqs[i].qiov = &qiovs[i];
- reqs[i].sector = offset >> 9;
- reqs[i].nb_sectors = reqs[i].qiov->size >> 9;
-
- optind = j + 1;
-
- pattern++;
- }
-
- /* If there were empty requests at the end, ignore them */
- nr_reqs = i;
-
- gettimeofday(&t1, NULL);
- cnt = do_aio_multiwrite(bs, reqs, nr_reqs, &total);
- gettimeofday(&t2, NULL);
-
- if (cnt < 0) {
- printf("aio_multiwrite failed: %s\n", strerror(-cnt));
- goto out;
- }
-
- if (qflag) {
- goto out;
- }
-
- /* Finally, report back -- -C gives a parsable format */
- t2 = tsub(t2, t1);
- print_report("wrote", &t2, first_offset, total, total, cnt, Cflag);
-out:
- for (i = 0; i < nr_reqs; i++) {
- qemu_io_free(buf[i]);
- if (reqs[i].qiov != NULL) {
- qemu_iovec_destroy(&qiovs[i]);
- }
- }
- g_free(buf);
- g_free(reqs);
- g_free(qiovs);
- return 0;
-}
-
-struct aio_ctx {
- QEMUIOVector qiov;
- int64_t offset;
- char *buf;
- int qflag;
- int vflag;
- int Cflag;
- int Pflag;
- int pattern;
- struct timeval t1;
-};
-
-static void aio_write_done(void *opaque, int ret)
-{
- struct aio_ctx *ctx = opaque;
- struct timeval t2;
-
- gettimeofday(&t2, NULL);
-
-
- if (ret < 0) {
- printf("aio_write failed: %s\n", strerror(-ret));
- goto out;
- }
-
- if (ctx->qflag) {
- goto out;
- }
-
- /* Finally, report back -- -C gives a parsable format */
- t2 = tsub(t2, ctx->t1);
- print_report("wrote", &t2, ctx->offset, ctx->qiov.size,
- ctx->qiov.size, 1, ctx->Cflag);
-out:
- qemu_io_free(ctx->buf);
- qemu_iovec_destroy(&ctx->qiov);
- g_free(ctx);
-}
-
-static void aio_read_done(void *opaque, int ret)
-{
- struct aio_ctx *ctx = opaque;
- struct timeval t2;
-
- gettimeofday(&t2, NULL);
-
- if (ret < 0) {
- printf("readv failed: %s\n", strerror(-ret));
- goto out;
- }
-
- if (ctx->Pflag) {
- 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);
- }
- g_free(cmp_buf);
- }
-
- if (ctx->qflag) {
- goto out;
- }
-
- if (ctx->vflag) {
- dump_buffer(ctx->buf, ctx->offset, ctx->qiov.size);
- }
-
- /* Finally, report back -- -C gives a parsable format */
- t2 = tsub(t2, ctx->t1);
- print_report("read", &t2, ctx->offset, ctx->qiov.size,
- ctx->qiov.size, 1, ctx->Cflag);
-out:
- qemu_io_free(ctx->buf);
- qemu_iovec_destroy(&ctx->qiov);
- g_free(ctx);
-}
-
-static void aio_read_help(void)
-{
- printf(
-"\n"
-" asynchronously reads a range of bytes from the given offset\n"
-"\n"
-" Example:\n"
-" 'aio_read -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n"
-"\n"
-" 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"
-" -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"
-" -q, -- quiet mode, do not show I/O statistics\n"
-"\n");
-}
-
-static int aio_read_f(BlockDriverState *bs, int argc, char **argv);
-
-static const cmdinfo_t aio_read_cmd = {
- .name = "aio_read",
- .cfunc = aio_read_f,
- .argmin = 2,
- .argmax = -1,
- .args = "[-Cqv] [-P pattern ] off len [len..]",
- .oneline = "asynchronously reads a number of bytes",
- .help = aio_read_help,
-};
-
-static int aio_read_f(BlockDriverState *bs, int argc, char **argv)
-{
- int nr_iov, c;
- struct aio_ctx *ctx = g_new0(struct aio_ctx, 1);
-
- while ((c = getopt(argc, argv, "CP:qv")) != EOF) {
- switch (c) {
- case 'C':
- ctx->Cflag = 1;
- break;
- case 'P':
- ctx->Pflag = 1;
- ctx->pattern = parse_pattern(optarg);
- if (ctx->pattern < 0) {
- g_free(ctx);
- return 0;
- }
- break;
- case 'q':
- ctx->qflag = 1;
- break;
- case 'v':
- ctx->vflag = 1;
- break;
- default:
- g_free(ctx);
- return command_usage(&aio_read_cmd);
- }
- }
-
- if (optind > argc - 2) {
- 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]);
- g_free(ctx);
- return 0;
- }
- optind++;
-
- if (ctx->offset & 0x1ff) {
- printf("offset %" PRId64 " is not sector aligned\n",
- ctx->offset);
- g_free(ctx);
- return 0;
- }
-
- nr_iov = argc - optind;
- ctx->buf = create_iovec(bs, &ctx->qiov, &argv[optind], nr_iov, 0xab);
- if (ctx->buf == NULL) {
- g_free(ctx);
- return 0;
- }
-
- gettimeofday(&ctx->t1, NULL);
- bdrv_aio_readv(bs, ctx->offset >> 9, &ctx->qiov,
- ctx->qiov.size >> 9, aio_read_done, ctx);
- return 0;
-}
-
-static void aio_write_help(void)
-{
- printf(
-"\n"
-" asynchronously writes a range of bytes from the given offset source\n"
-" from multiple buffers\n"
-"\n"
-" Example:\n"
-" 'aio_write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
-"\n"
-" 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"
-" -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"
-"\n");
-}
-
-static int aio_write_f(BlockDriverState *bs, int argc, char **argv);
-
-static const cmdinfo_t aio_write_cmd = {
- .name = "aio_write",
- .cfunc = aio_write_f,
- .argmin = 2,
- .argmax = -1,
- .args = "[-Cq] [-P pattern ] off len [len..]",
- .oneline = "asynchronously writes a number of bytes",
- .help = aio_write_help,
-};
-
-static int aio_write_f(BlockDriverState *bs, int argc, char **argv)
-{
- int nr_iov, c;
- int pattern = 0xcd;
- struct aio_ctx *ctx = g_new0(struct aio_ctx, 1);
-
- while ((c = getopt(argc, argv, "CqP:")) != EOF) {
- switch (c) {
- case 'C':
- ctx->Cflag = 1;
- break;
- case 'q':
- ctx->qflag = 1;
- break;
- case 'P':
- pattern = parse_pattern(optarg);
- if (pattern < 0) {
- g_free(ctx);
- return 0;
- }
- break;
- default:
- g_free(ctx);
- return command_usage(&aio_write_cmd);
- }
- }
-
- if (optind > argc - 2) {
- 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]);
- g_free(ctx);
- return 0;
- }
- optind++;
-
- if (ctx->offset & 0x1ff) {
- printf("offset %" PRId64 " is not sector aligned\n",
- ctx->offset);
- g_free(ctx);
- return 0;
- }
-
- nr_iov = argc - optind;
- ctx->buf = create_iovec(bs, &ctx->qiov, &argv[optind], nr_iov, pattern);
- if (ctx->buf == NULL) {
- g_free(ctx);
- return 0;
- }
-
- gettimeofday(&ctx->t1, NULL);
- bdrv_aio_writev(bs, ctx->offset >> 9, &ctx->qiov,
- ctx->qiov.size >> 9, aio_write_done, ctx);
- return 0;
-}
-
-static int aio_flush_f(BlockDriverState *bs, int argc, char **argv)
-{
- bdrv_drain_all();
- return 0;
-}
-
-static const cmdinfo_t aio_flush_cmd = {
- .name = "aio_flush",
- .cfunc = aio_flush_f,
- .oneline = "completes all outstanding aio requests"
-};
-
-static int flush_f(BlockDriverState *bs, int argc, char **argv)
-{
- bdrv_flush(bs);
- return 0;
-}
-
-static const cmdinfo_t flush_cmd = {
- .name = "flush",
- .altname = "f",
- .cfunc = flush_f,
- .oneline = "flush all in-core file state to disk",
-};
-
-static int truncate_f(BlockDriverState *bs, int argc, char **argv)
-{
- int64_t offset;
- int ret;
-
- offset = cvtnum(argv[1]);
- if (offset < 0) {
- printf("non-numeric truncate argument -- %s\n", argv[1]);
- return 0;
- }
-
- ret = bdrv_truncate(bs, offset);
- if (ret < 0) {
- printf("truncate: %s\n", strerror(-ret));
- return 0;
- }
-
- return 0;
-}
-
-static const cmdinfo_t truncate_cmd = {
- .name = "truncate",
- .altname = "t",
- .cfunc = truncate_f,
- .argmin = 1,
- .argmax = 1,
- .args = "off",
- .oneline = "truncates the current file at the given offset",
-};
-
-static int length_f(BlockDriverState *bs, int argc, char **argv)
-{
- int64_t size;
- char s1[64];
-
- size = bdrv_getlength(bs);
- if (size < 0) {
- printf("getlength: %s\n", strerror(-size));
- return 0;
- }
-
- cvtstr(size, s1, sizeof(s1));
- printf("%s\n", s1);
- return 0;
-}
-
-
-static const cmdinfo_t length_cmd = {
- .name = "length",
- .altname = "l",
- .cfunc = length_f,
- .oneline = "gets the length of the current file",
-};
-
-
-static int info_f(BlockDriverState *bs, int argc, char **argv)
-{
- BlockDriverInfo bdi;
- char s1[64], s2[64];
- int ret;
-
- if (bs->drv && bs->drv->format_name) {
- printf("format name: %s\n", bs->drv->format_name);
- }
- if (bs->drv && bs->drv->protocol_name) {
- printf("format name: %s\n", bs->drv->protocol_name);
- }
-
- ret = bdrv_get_info(bs, &bdi);
- if (ret) {
- return 0;
- }
-
- cvtstr(bdi.cluster_size, s1, sizeof(s1));
- cvtstr(bdi.vm_state_offset, s2, sizeof(s2));
-
- printf("cluster size: %s\n", s1);
- printf("vm state offset: %s\n", s2);
-
- return 0;
-}
-
-
-
-static const cmdinfo_t info_cmd = {
- .name = "info",
- .altname = "i",
- .cfunc = info_f,
- .oneline = "prints information about the current file",
-};
-
-static void discard_help(void)
-{
- printf(
-"\n"
-" discards a range of bytes from the given offset\n"
-"\n"
-" Example:\n"
-" 'discard 512 1k' - discards 1 kilobyte from 512 bytes into the file\n"
-"\n"
-" Discards a segment of the currently open file.\n"
-" -C, -- report statistics in a machine parsable format\n"
-" -q, -- quiet mode, do not show I/O statistics\n"
-"\n");
-}
-
-static int discard_f(BlockDriverState *bs, int argc, char **argv);
-
-static const cmdinfo_t discard_cmd = {
- .name = "discard",
- .altname = "d",
- .cfunc = discard_f,
- .argmin = 2,
- .argmax = -1,
- .args = "[-Cq] off len",
- .oneline = "discards a number of bytes at a specified offset",
- .help = discard_help,
-};
-
-static int discard_f(BlockDriverState *bs, int argc, char **argv)
-{
- struct timeval t1, t2;
- int Cflag = 0, qflag = 0;
- int c, ret;
- int64_t offset;
- int count;
-
- while ((c = getopt(argc, argv, "Cq")) != EOF) {
- switch (c) {
- case 'C':
- Cflag = 1;
- break;
- case 'q':
- qflag = 1;
- break;
- default:
- return command_usage(&discard_cmd);
- }
- }
-
- if (optind != argc - 2) {
- return command_usage(&discard_cmd);
- }
-
- offset = cvtnum(argv[optind]);
- if (offset < 0) {
- printf("non-numeric length argument -- %s\n", argv[optind]);
- return 0;
- }
-
- optind++;
- count = cvtnum(argv[optind]);
- if (count < 0) {
- printf("non-numeric length argument -- %s\n", argv[optind]);
- return 0;
- }
-
- gettimeofday(&t1, NULL);
- ret = bdrv_discard(bs, offset >> BDRV_SECTOR_BITS,
- count >> BDRV_SECTOR_BITS);
- gettimeofday(&t2, NULL);
-
- if (ret < 0) {
- printf("discard failed: %s\n", strerror(-ret));
- goto out;
- }
-
- /* Finally, report back -- -C gives a parsable format */
- if (!qflag) {
- t2 = tsub(t2, t1);
- print_report("discard", &t2, offset, count, count, 1, Cflag);
- }
-
-out:
- return 0;
-}
-
-static int alloc_f(BlockDriverState *bs, int argc, char **argv)
-{
- int64_t offset, sector_num;
- int nb_sectors, remaining;
- char s1[64];
- int num, sum_alloc;
- int ret;
-
- offset = cvtnum(argv[1]);
- if (offset < 0) {
- printf("non-numeric offset argument -- %s\n", argv[1]);
- return 0;
- } else if (offset & 0x1ff) {
- printf("offset %" PRId64 " is not sector aligned\n",
- offset);
- return 0;
- }
-
- if (argc == 3) {
- nb_sectors = cvtnum(argv[2]);
- if (nb_sectors < 0) {
- printf("non-numeric length argument -- %s\n", argv[2]);
- return 0;
- }
- } else {
- nb_sectors = 1;
- }
-
- remaining = nb_sectors;
- sum_alloc = 0;
- sector_num = offset >> 9;
- while (remaining) {
- 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));
-
- printf("%d/%d sectors allocated at offset %s\n",
- sum_alloc, nb_sectors, s1);
- return 0;
-}
-
-static const cmdinfo_t alloc_cmd = {
- .name = "alloc",
- .altname = "a",
- .argmin = 1,
- .argmax = 2,
- .cfunc = alloc_f,
- .args = "off [sectors]",
- .oneline = "checks if a sector is present in the file",
-};
-
-
-static int map_is_allocated(BlockDriverState *bs, int64_t sector_num,
- int64_t nb_sectors, int64_t *pnum)
-{
- int num, num_checked;
- int ret, firstret;
-
- num_checked = MIN(nb_sectors, INT_MAX);
- ret = bdrv_is_allocated(bs, sector_num, num_checked, &num);
- if (ret < 0) {
- return ret;
- }
-
- firstret = ret;
- *pnum = num;
-
- while (nb_sectors > 0 && ret == firstret) {
- sector_num += num;
- nb_sectors -= num;
-
- num_checked = MIN(nb_sectors, INT_MAX);
- ret = bdrv_is_allocated(bs, sector_num, num_checked, &num);
- if (ret == firstret) {
- *pnum += num;
- } else {
- break;
- }
- }
-
- return firstret;
-}
-
-static int map_f(BlockDriverState *bs, int argc, char **argv)
-{
- int64_t offset;
- int64_t nb_sectors;
- char s1[64];
- int64_t num;
- int ret;
- const char *retstr;
-
- offset = 0;
- nb_sectors = bs->total_sectors;
-
- do {
- ret = map_is_allocated(bs, offset, nb_sectors, &num);
- if (ret < 0) {
- error_report("Failed to get allocation status: %s", strerror(-ret));
- return 0;
- }
-
- retstr = ret ? " allocated" : "not allocated";
- cvtstr(offset << 9ULL, s1, sizeof(s1));
- printf("[% 24" PRId64 "] % 8" PRId64 "/% 8" PRId64 " sectors %s "
- "at offset %s (%d)\n",
- offset << 9ULL, num, nb_sectors, retstr, s1, ret);
-
- offset += num;
- nb_sectors -= num;
- } while (offset < bs->total_sectors);
-
- return 0;
-}
-
-static const cmdinfo_t map_cmd = {
- .name = "map",
- .argmin = 0,
- .argmax = 0,
- .cfunc = map_f,
- .args = "",
- .oneline = "prints the allocated areas of a file",
-};
-
-static int break_f(BlockDriverState *bs, 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(BlockDriverState *bs, 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(BlockDriverState *bs, 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(BlockDriverState *bs, 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)",
-};
+extern int qemuio_misalign;
static int close_f(BlockDriverState *bs, int argc, char **argv)
{
@@ -1916,18 +137,6 @@ static int open_f(BlockDriverState *bs, int argc, char **argv)
return openfile(argv[optind], flags, growable);
}
-static int init_check_command(BlockDriverState *bs, const cmdinfo_t *ct)
-{
- if (ct->flags & CMD_FLAG_GLOBAL) {
- return 1;
- }
- if (!(ct->flags & CMD_NOFILE_OK) && !bs) {
- fprintf(stderr, "no file open, try 'help open'\n");
- return 0;
- }
- return 1;
-}
-
static void usage(const char *name)
{
printf(
@@ -1998,7 +207,7 @@ int main(int argc, char **argv)
readonly = 1;
break;
case 'm':
- misalign = 1;
+ qemuio_misalign = 1;
break;
case 'g':
growable = 1;
@@ -2039,30 +248,8 @@ int main(int argc, char **argv)
/* initialize commands */
quit_init();
- help_init();
add_command(&open_cmd);
add_command(&close_cmd);
- add_command(&read_cmd);
- add_command(&readv_cmd);
- add_command(&write_cmd);
- add_command(&writev_cmd);
- add_command(&multiwrite_cmd);
- add_command(&aio_read_cmd);
- add_command(&aio_write_cmd);
- add_command(&aio_flush_cmd);
- add_command(&flush_cmd);
- add_command(&truncate_cmd);
- add_command(&length_cmd);
- add_command(&info_cmd);
- 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_check_command(init_check_command);
/* open the device */
if (!readonly) {
--
1.8.1.4
^ permalink raw reply related [flat|nested] 19+ messages in thread