#include <getopt.h>
#include <libgen.h>
-#include "qemu-common.h"
-#include "block_int.h"
-#include "cmd.h"
+#include "qemu-io.h"
+#include "qemu/main-loop.h"
+#include "qemu/option.h"
+#include "qemu/config-file.h"
+#include "block/block_int.h"
+#include "trace/control.h"
-#define VERSION "0.0.1"
-
-#define CMD_NOFILE_OK 0x01
+#define CMD_NOFILE_OK 0x01
char *progname;
-static BlockDriverState *bs;
-
-static int misalign;
-
-/*
- * 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(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(QEMUIOVector *qiov, char **argv, int nr_iov, int pattern)
-{
- size_t *sizes = calloc(nr_iov, sizeof(size_t));
- 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);
+BlockDriverState *qemuio_bs;
+extern int qemuio_misalign;
- buf = p = qemu_io_alloc(count, pattern);
+/* qemu-io commands passed using -c */
+static int ncmdline;
+static char **cmdline;
- for (i = 0; i < nr_iov; i++) {
- qemu_iovec_add(qiov, p, sizes[i]);
- p += sizes[i];
- }
-
-fail:
- free(sizes);
- return buf;
-}
-
-static int do_read(char *buf, int64_t offset, int count, int *total)
+static int close_f(BlockDriverState *bs, int argc, char **argv)
{
- int ret;
-
- ret = bdrv_read(bs, offset >> 9, (uint8_t *)buf, count >> 9);
- if (ret < 0)
- return ret;
- *total = count;
- return 1;
+ bdrv_unref(bs);
+ qemuio_bs = NULL;
+ return 0;
}
-static int do_write(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(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(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;
-}
-
-static int do_load_vmstate(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(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(QEMUIOVector *qiov, int64_t offset, int *total)
-{
- BlockDriverAIOCB *acb;
- int async_ret = NOT_DONE;
-
- acb = bdrv_aio_readv(bs, offset >> 9, qiov, qiov->size >> 9,
- aio_rw_done, &async_ret);
- if (!acb)
- return -EIO;
-
- while (async_ret == NOT_DONE)
- qemu_aio_wait();
-
- *total = qiov->size;
- return async_ret < 0 ? async_ret : 1;
-}
-
-static int do_aio_writev(QEMUIOVector *qiov, int64_t offset, int *total)
-{
- BlockDriverAIOCB *acb;
- int async_ret = NOT_DONE;
-
- acb = bdrv_aio_writev(bs, offset >> 9, qiov, qiov->size >> 9,
- aio_rw_done, &async_ret);
- if (!acb)
- return -EIO;
-
- while (async_ret == NOT_DONE)
- qemu_aio_wait();
-
- *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(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) {
- qemu_aio_wait();
- }
-
- 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(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 const cmdinfo_t close_cmd = {
+ .name = "close",
+ .altname = "c",
+ .cfunc = close_f,
+ .oneline = "close the current open file",
};
-static int
-read_f(int argc, char **argv)
+static int openfile(char *name, int flags, int growable, QDict *opts)
{
- 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);
- }
+ Error *local_err = NULL;
- if (!lflag) {
- pattern_count = count - pattern_offset;
+ if (qemuio_bs) {
+ fprintf(stderr, "file open already, try 'help close'\n");
+ return 1;
}
- if ((pattern_count < 0) || (pattern_count + pattern_offset > count)) {
- printf("pattern verfication range exceeds end of read data\n");
- return 0;
+ if (growable) {
+ if (bdrv_file_open(&qemuio_bs, name, opts, flags, &local_err)) {
+ fprintf(stderr, "%s: can't open device %s: %s\n", progname, name,
+ error_get_pretty(local_err));
+ error_free(local_err);
+ return 1;
+ }
+ } else {
+ qemuio_bs = bdrv_new("hda");
+
+ if (bdrv_open(qemuio_bs, name, opts, flags, NULL, &local_err) < 0) {
+ fprintf(stderr, "%s: can't open device %s: %s\n", progname, name,
+ error_get_pretty(local_err));
+ error_free(local_err);
+ bdrv_unref(qemuio_bs);
+ qemuio_bs = NULL;
+ return 1;
+ }
}
- 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(count, 0xab);
-
- gettimeofday(&t1, NULL);
- if (pflag)
- cnt = do_pread(buf, offset, count, &total);
- else if (bflag)
- cnt = do_load_vmstate(buf, offset, count, &total);
- else
- cnt = do_read(buf, offset, count, &total);
- gettimeofday(&t2, NULL);
-
- if (cnt < 0) {
- printf("read failed: %s\n", strerror(-cnt));
- goto out;
- }
-
- if (Pflag) {
- void* cmp_buf = malloc(pattern_count);
- memset(cmp_buf, pattern, pattern_count);
- if (memcmp(buf + pattern_offset, cmp_buf, pattern_count)) {
- printf("Pattern verification failed at offset %"
- PRId64 ", %d bytes\n",
- offset + pattern_offset, pattern_count);
- }
- free(cmp_buf);
- }
-
- 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(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(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(&qiov, &argv[optind], nr_iov, 0xab);
-
- gettimeofday(&t1, NULL);
- cnt = do_aio_readv(&qiov, offset, &total);
- gettimeofday(&t2, NULL);
-
- if (cnt < 0) {
- printf("readv failed: %s\n", strerror(-cnt));
- goto out;
- }
-
- if (Pflag) {
- void* cmp_buf = malloc(qiov.size);
- memset(cmp_buf, pattern, qiov.size);
- if (memcmp(buf, cmp_buf, qiov.size)) {
- printf("Pattern verification failed at offset %"
- PRId64 ", %zd bytes\n",
- offset, qiov.size);
- }
- free(cmp_buf);
- }
-
- 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_io_free(buf);
- return 0;
+ return 0;
}
-static void
-write_help(void)
+static void open_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"
+ printf(
"\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"
-" -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"
-"\n");
-}
-
-static int write_f(int argc, char **argv);
-
-static const cmdinfo_t write_cmd = {
- .name = "write",
- .altname = "w",
- .cfunc = write_f,
- .argmin = 2,
- .argmax = -1,
- .args = "[-abCpq] [-P pattern ] off len",
- .oneline = "writes a number of bytes at a specified offset",
- .help = write_help,
-};
-
-static int
-write_f(int argc, char **argv)
-{
- struct timeval t1, t2;
- int Cflag = 0, pflag = 0, qflag = 0, bflag = 0;
- int 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 = 0xcd;
-
- while ((c = getopt(argc, argv, "bCpP:q")) != EOF) {
- switch (c) {
- case 'b':
- bflag = 1;
- break;
- case 'C':
- Cflag = 1;
- break;
- case 'p':
- pflag = 1;
- break;
- case 'P':
- pattern = parse_pattern(optarg);
- if (pattern < 0)
- return 0;
- break;
- case 'q':
- qflag = 1;
- break;
- default:
- return command_usage(&write_cmd);
- }
- }
-
- if (optind != argc - 2)
- return command_usage(&write_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) {
- 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(count, pattern);
-
- gettimeofday(&t1, NULL);
- if (pflag)
- cnt = do_pwrite(buf, offset, count, &total);
- else if (bflag)
- cnt = do_save_vmstate(buf, offset, count, &total);
- else
- cnt = do_write(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:
- 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"
+" opens a new file in the requested mode\n"
"\n"
" Example:\n"
-" 'write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
+" 'open -Cn /tmp/data' - creates/opens data file read-write and uncached\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"
+" Opens a file for subsequent use by all of the other qemu-io commands.\n"
+" -r, -- open file read-only\n"
+" -s, -- use snapshot file\n"
+" -n, -- disable host cache\n"
+" -g, -- allow file to grow (only applies to protocols)\n"
+" -o, -- options to be given to the block driver"
"\n");
}
-static int writev_f(int argc, char **argv);
+static int open_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 const cmdinfo_t open_cmd = {
+ .name = "open",
+ .altname = "o",
+ .cfunc = open_f,
+ .argmin = 1,
+ .argmax = -1,
+ .flags = CMD_NOFILE_OK,
+ .args = "[-Crsn] [-o options] [path]",
+ .oneline = "open the file specified by path",
+ .help = open_help,
};
-static int
-writev_f(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(&qiov, &argv[optind], nr_iov, pattern);
-
- gettimeofday(&t1, NULL);
- cnt = do_aio_writev(&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_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(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 QemuOptsList empty_opts = {
+ .name = "drive",
+ .head = QTAILQ_HEAD_INITIALIZER(empty_opts.head),
+ .desc = {
+ /* no elements => accept any params */
+ { /* end of list */ }
+ },
};
-static int
-multiwrite_f(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 = qemu_malloc(nr_reqs * sizeof(*reqs));
- buf = qemu_malloc(nr_reqs * sizeof(*buf));
- qiovs = qemu_malloc(nr_reqs * sizeof(*qiovs));
-
- for (i = 0; i < nr_reqs; 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]);
- return 0;
- }
- optind++;
-
- if (offset & 0x1ff) {
- printf("offset %lld is not sector aligned\n",
- (long long)offset);
- return 0;
- }
-
- if (i == 0) {
- first_offset = offset;
+static int open_f(BlockDriverState *bs, int argc, char **argv)
+{
+ int flags = 0;
+ int readonly = 0;
+ int growable = 0;
+ int c;
+ QemuOpts *qopts;
+ QDict *opts = NULL;
+
+ while ((c = getopt(argc, argv, "snrgo:")) != EOF) {
+ switch (c) {
+ case 's':
+ flags |= BDRV_O_SNAPSHOT;
+ break;
+ case 'n':
+ flags |= BDRV_O_NOCACHE | BDRV_O_CACHE_WB;
+ break;
+ case 'r':
+ readonly = 1;
+ break;
+ case 'g':
+ growable = 1;
+ break;
+ case 'o':
+ qopts = qemu_opts_parse(&empty_opts, optarg, 0);
+ if (qopts == NULL) {
+ printf("could not parse option list -- %s\n", optarg);
+ return 0;
+ }
+ opts = qemu_opts_to_qdict(qopts, opts);
+ qemu_opts_del(qopts);
+ break;
+ default:
+ return qemuio_command_usage(&open_cmd);
}
+ }
- /* Read lengths for qiov entries */
- for (j = optind; j < argc; j++) {
- if (!strcmp(argv[j], ";")) {
- break;
- }
- }
-
- nr_iov = j - optind;
-
- /* Build request */
- reqs[i].qiov = &qiovs[i];
- buf[i] = create_iovec(reqs[i].qiov, &argv[optind], nr_iov, pattern);
- reqs[i].sector = offset >> 9;
- reqs[i].nb_sectors = reqs[i].qiov->size >> 9;
-
- optind = j + 1;
-
- offset += reqs[i].qiov->size;
- pattern++;
- }
-
- gettimeofday(&t1, NULL);
- cnt = do_aio_multiwrite(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]);
- qemu_iovec_destroy(&qiovs[i]);
- }
- qemu_free(buf);
- qemu_free(reqs);
- qemu_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);
- 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 = malloc(ctx->qiov.size);
-
- memset(cmp_buf, ctx->pattern, ctx->qiov.size);
- if (memcmp(ctx->buf, cmp_buf, ctx->qiov.size)) {
- printf("Pattern verification failed at offset %"
- PRId64 ", %zd bytes\n",
- ctx->offset, ctx->qiov.size);
- }
- free(cmp_buf);
- }
-
- if (ctx->qflag) {
- goto out;
- }
+ if (!readonly) {
+ flags |= BDRV_O_RDWR;
+ }
- if (ctx->vflag) {
- dump_buffer(ctx->buf, ctx->offset, ctx->qiov.size);
- }
+ if (optind != argc - 1) {
+ return qemuio_command_usage(&open_cmd);
+ }
- /* 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);
- free(ctx);
+ return openfile(argv[optind], flags, growable, opts);
}
-static void
-aio_read_help(void)
+static int quit_f(BlockDriverState *bs, int argc, char **argv)
{
- 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");
+ return 1;
}
-static int aio_read_f(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 const cmdinfo_t quit_cmd = {
+ .name = "quit",
+ .altname = "q",
+ .cfunc = quit_f,
+ .argmin = -1,
+ .argmax = -1,
+ .flags = CMD_FLAG_GLOBAL,
+ .oneline = "exit the program",
};
-static int
-aio_read_f(int argc, char **argv)
-{
- int nr_iov, c;
- struct aio_ctx *ctx = calloc(1, sizeof(struct aio_ctx));
- BlockDriverAIOCB *acb;
-
- 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) {
- free(ctx);
- return 0;
- }
- break;
- case 'q':
- ctx->qflag = 1;
- break;
- case 'v':
- ctx->vflag = 1;
- break;
- default:
- free(ctx);
- return command_usage(&aio_read_cmd);
- }
- }
-
- if (optind > argc - 2) {
- free(ctx);
- return command_usage(&aio_read_cmd);
- }
-
- ctx->offset = cvtnum(argv[optind]);
- if (ctx->offset < 0) {
- printf("non-numeric length argument -- %s\n", argv[optind]);
- free(ctx);
- return 0;
- }
- optind++;
-
- if (ctx->offset & 0x1ff) {
- printf("offset %" PRId64 " is not sector aligned\n",
- ctx->offset);
- free(ctx);
- return 0;
- }
-
- nr_iov = argc - optind;
- ctx->buf = create_iovec(&ctx->qiov, &argv[optind], nr_iov, 0xab);
-
- gettimeofday(&ctx->t1, NULL);
- acb = bdrv_aio_readv(bs, ctx->offset >> 9, &ctx->qiov,
- ctx->qiov.size >> 9, aio_read_done, ctx);
- if (!acb) {
- free(ctx->buf);
- free(ctx);
- return -EIO;
- }
-
- return 0;
-}
-
-static void
-aio_write_help(void)
+static void usage(const char *name)
{
- 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"
+ printf(
+"Usage: %s [-h] [-V] [-rsnm] [-c cmd] ... [file]\n"
+"QEMU Disk exerciser\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(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(int argc, char **argv)
-{
- int nr_iov, c;
- int pattern = 0xcd;
- struct aio_ctx *ctx = calloc(1, sizeof(struct aio_ctx));
- BlockDriverAIOCB *acb;
-
- 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)
- return 0;
- break;
- default:
- free(ctx);
- return command_usage(&aio_write_cmd);
- }
- }
-
- if (optind > argc - 2) {
- free(ctx);
- return command_usage(&aio_write_cmd);
- }
-
- ctx->offset = cvtnum(argv[optind]);
- if (ctx->offset < 0) {
- printf("non-numeric length argument -- %s\n", argv[optind]);
- free(ctx);
- return 0;
- }
- optind++;
-
- if (ctx->offset & 0x1ff) {
- printf("offset %" PRId64 " is not sector aligned\n",
- ctx->offset);
- free(ctx);
- return 0;
- }
-
- nr_iov = argc - optind;
- ctx->buf = create_iovec(&ctx->qiov, &argv[optind], nr_iov, pattern);
-
- gettimeofday(&ctx->t1, NULL);
- acb = bdrv_aio_writev(bs, ctx->offset >> 9, &ctx->qiov,
- ctx->qiov.size >> 9, aio_write_done, ctx);
- if (!acb) {
- free(ctx->buf);
- free(ctx);
- return -EIO;
- }
-
- return 0;
-}
-
-static int
-aio_flush_f(int argc, char **argv)
-{
- qemu_aio_flush();
- 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(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(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(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;
+" -c, --cmd command to execute\n"
+" -r, --read-only export read-only\n"
+" -s, --snapshot use snapshot file\n"
+" -n, --nocache disable host cache\n"
+" -g, --growable allow file to grow (only applies to protocols)\n"
+" -m, --misalign misalign allocations for O_DIRECT\n"
+" -k, --native-aio use kernel AIO implementation (on Linux only)\n"
+" -t, --cache=MODE use the given cache mode for the image\n"
+" -T, --trace FILE enable trace events listed in the given file\n"
+" -h, --help display this help and exit\n"
+" -V, --version output version information and exit\n"
+"\n",
+ name);
}
-static const cmdinfo_t length_cmd = {
- .name = "length",
- .altname = "l",
- .cfunc = length_f,
- .oneline = "gets the length of the current file",
-};
-
+#if defined(ENABLE_READLINE)
+# include <readline/history.h>
+# include <readline/readline.h>
+#elif defined(ENABLE_EDITLINE)
+# include <histedit.h>
+#endif
-static int
-info_f(int argc, char **argv)
+static char *get_prompt(void)
{
- 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);
+ static char prompt[FILENAME_MAX + 2 /*"> "*/ + 1 /*"\0"*/ ];
- 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);
+ if (!prompt[0]) {
+ snprintf(prompt, sizeof(prompt), "%s> ", progname);
+ }
- return 0;
+ return prompt;
}
-
-
-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)
+#if defined(ENABLE_READLINE)
+static char *fetchline(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");
+ char *line = readline(get_prompt());
+ if (line && *line) {
+ add_history(line);
+ }
+ return line;
}
-
-static int discard_f(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(int argc, char **argv)
+#elif defined(ENABLE_EDITLINE)
+static char *el_get_prompt(EditLine *e)
{
- 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;
+ return get_prompt();
}
-static int
-alloc_f(int argc, char **argv)
+static char *fetchline(void)
{
- int64_t offset;
- int nb_sectors, remaining;
- char s1[64];
- int num, sum_alloc;
- int ret;
-
- offset = cvtnum(argv[1]);
- if (offset & 0x1ff) {
- printf("offset %" PRId64 " is not sector aligned\n",
- offset);
- return 0;
- }
+ static EditLine *el;
+ static History *hist;
+ HistEvent hevent;
+ char *line;
+ int count;
- if (argc == 3)
- nb_sectors = cvtnum(argv[2]);
- else
- nb_sectors = 1;
-
- remaining = nb_sectors;
- sum_alloc = 0;
- while (remaining) {
- ret = bdrv_is_allocated(bs, offset >> 9, nb_sectors, &num);
- remaining -= num;
- if (ret) {
- sum_alloc += num;
- }
- }
-
- cvtstr(offset, s1, sizeof(s1));
-
- printf("%d/%d sectors allocated at offset %s\n",
- sum_alloc, nb_sectors, s1);
- return 0;
+ if (!el) {
+ hist = history_init();
+ history(hist, &hevent, H_SETSIZE, 100);
+ el = el_init(progname, stdin, stdout, stderr);
+ el_source(el, NULL);
+ el_set(el, EL_SIGNAL, 1);
+ el_set(el, EL_PROMPT, el_get_prompt);
+ el_set(el, EL_HIST, history, (const char *)hist);
+ }
+ line = strdup(el_gets(el, &count));
+ if (line) {
+ if (count > 0) {
+ line[count-1] = '\0';
+ }
+ if (*line) {
+ history(hist, &hevent, H_ENTER, line);
+ }
+ }
+ return line;
}
-
-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_f(int argc, char **argv)
+#else
+# define MAXREADLINESZ 1024
+static char *fetchline(void)
{
- int64_t offset;
- int64_t nb_sectors;
- char s1[64];
- int num, num_checked;
- int ret;
- const char *retstr;
-
- offset = 0;
- nb_sectors = bs->total_sectors;
-
- do {
- num_checked = MIN(nb_sectors, INT_MAX);
- ret = bdrv_is_allocated(bs, offset, num_checked, &num);
- retstr = ret ? " allocated" : "not allocated";
- cvtstr(offset << 9ULL, s1, sizeof(s1));
- printf("[% 24" PRId64 "] % 8d/% 8d sectors %s at offset %s (%d)\n",
- offset << 9ULL, num, num_checked, retstr, s1, ret);
-
- offset += num;
- nb_sectors -= num;
- } while(offset < bs->total_sectors);
+ char *p, *line = g_malloc(MAXREADLINESZ);
- 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",
-};
+ if (!fgets(line, MAXREADLINESZ, stdin)) {
+ g_free(line);
+ return NULL;
+ }
+ p = line + strlen(line);
+ if (p != line && p[-1] == '\n') {
+ p[-1] = '\0';
+ }
-static int
-close_f(int argc, char **argv)
-{
- bdrv_close(bs);
- bs = NULL;
- return 0;
+ return line;
}
+#endif
-static const cmdinfo_t close_cmd = {
- .name = "close",
- .altname = "c",
- .cfunc = close_f,
- .oneline = "close the current open file",
-};
-
-static int openfile(char *name, int flags, int growable)
+static void prep_fetchline(void *opaque)
{
- if (bs) {
- fprintf(stderr, "file open already, try 'help close'\n");
- return 1;
- }
-
- if (growable) {
- if (bdrv_file_open(&bs, name, flags)) {
- fprintf(stderr, "%s: can't open device %s\n", progname, name);
- return 1;
- }
- } else {
- bs = bdrv_new("hda");
-
- if (bdrv_open(bs, name, flags, NULL) < 0) {
- fprintf(stderr, "%s: can't open device %s\n", progname, name);
- bs = NULL;
- return 1;
- }
- }
-
- return 0;
-}
+ int *fetchable = opaque;
-static void
-open_help(void)
-{
- printf(
-"\n"
-" opens a new file in the requested mode\n"
-"\n"
-" Example:\n"
-" 'open -Cn /tmp/data' - creates/opens data file read-write and uncached\n"
-"\n"
-" Opens a file for subsequent use by all of the other qemu-io commands.\n"
-" -r, -- open file read-only\n"
-" -s, -- use snapshot file\n"
-" -n, -- disable host cache\n"
-" -g, -- allow file to grow (only applies to protocols)"
-"\n");
+ qemu_set_fd_handler(STDIN_FILENO, NULL, NULL, NULL);
+ *fetchable= 1;
}
-static int open_f(int argc, char **argv);
-
-static const cmdinfo_t open_cmd = {
- .name = "open",
- .altname = "o",
- .cfunc = open_f,
- .argmin = 1,
- .argmax = -1,
- .flags = CMD_NOFILE_OK,
- .args = "[-Crsn] [path]",
- .oneline = "open the file specified by path",
- .help = open_help,
-};
-
-static int
-open_f(int argc, char **argv)
+static void command_loop(void)
{
- int flags = 0;
- int readonly = 0;
- int growable = 0;
- int c;
+ int i, done = 0, fetchable = 0, prompted = 0;
+ char *input;
- while ((c = getopt(argc, argv, "snrg")) != EOF) {
- switch (c) {
- case 's':
- flags |= BDRV_O_SNAPSHOT;
- break;
- case 'n':
- flags |= BDRV_O_NOCACHE | BDRV_O_CACHE_WB;
- break;
- case 'r':
- readonly = 1;
- break;
- case 'g':
- growable = 1;
- break;
- default:
- return command_usage(&open_cmd);
- }
- }
+ for (i = 0; !done && i < ncmdline; i++) {
+ done = qemuio_command(qemuio_bs, cmdline[i]);
+ }
+ if (cmdline) {
+ g_free(cmdline);
+ return;
+ }
- if (!readonly) {
- flags |= BDRV_O_RDWR;
+ while (!done) {
+ if (!prompted) {
+ printf("%s", get_prompt());
+ fflush(stdout);
+ qemu_set_fd_handler(STDIN_FILENO, prep_fetchline, NULL, &fetchable);
+ prompted = 1;
}
- if (optind != argc - 1)
- return command_usage(&open_cmd);
+ main_loop_wait(false);
- return openfile(argv[optind], flags, growable);
-}
+ if (!fetchable) {
+ continue;
+ }
-static int
-init_args_command(
- int index)
-{
- /* only one device allowed so far */
- if (index >= 1)
- return 0;
- return ++index;
-}
+ input = fetchline();
+ if (input == NULL) {
+ break;
+ }
+ done = qemuio_command(qemuio_bs, input);
+ g_free(input);
-static int
-init_check_command(
- 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;
+ prompted = 0;
+ fetchable = 0;
+ }
+ qemu_set_fd_handler(STDIN_FILENO, NULL, NULL, NULL);
}
-static void usage(const char *name)
+static void add_user_command(char *optarg)
{
- printf(
-"Usage: %s [-h] [-V] [-rsnm] [-c cmd] ... [file]\n"
-"QEMU Disk exerciser\n"
-"\n"
-" -c, --cmd command to execute\n"
-" -r, --read-only export read-only\n"
-" -s, --snapshot use snapshot file\n"
-" -n, --nocache disable host cache\n"
-" -g, --growable allow file to grow (only applies to protocols)\n"
-" -m, --misalign misalign allocations for O_DIRECT\n"
-" -k, --native-aio use kernel AIO implementation (on Linux only)\n"
-" -h, --help display this help and exit\n"
-" -V, --version output version information and exit\n"
-"\n",
- name);
+ cmdline = g_realloc(cmdline, ++ncmdline * sizeof(char *));
+ cmdline[ncmdline-1] = optarg;
}
-
int main(int argc, char **argv)
{
- int readonly = 0;
- int growable = 0;
- const char *sopt = "hVc:rsnmgk";
- const struct option lopt[] = {
- { "help", 0, NULL, 'h' },
- { "version", 0, NULL, 'V' },
- { "offset", 1, NULL, 'o' },
- { "cmd", 1, NULL, 'c' },
- { "read-only", 0, NULL, 'r' },
- { "snapshot", 0, NULL, 's' },
- { "nocache", 0, NULL, 'n' },
- { "misalign", 0, NULL, 'm' },
- { "growable", 0, NULL, 'g' },
- { "native-aio", 0, NULL, 'k' },
- { NULL, 0, NULL, 0 }
- };
- int c;
- int opt_index = 0;
- int flags = 0;
-
- progname = basename(argv[0]);
-
- while ((c = getopt_long(argc, argv, sopt, lopt, &opt_index)) != -1) {
- switch (c) {
- case 's':
- flags |= BDRV_O_SNAPSHOT;
- break;
- case 'n':
- flags |= BDRV_O_NOCACHE | BDRV_O_CACHE_WB;
- break;
- case 'c':
- add_user_command(optarg);
- break;
- case 'r':
- readonly = 1;
- break;
- case 'm':
- misalign = 1;
- break;
- case 'g':
- growable = 1;
- break;
- case 'k':
- flags |= BDRV_O_NATIVE_AIO;
- break;
- case 'V':
- printf("%s version %s\n", progname, VERSION);
- exit(0);
- case 'h':
- usage(progname);
- exit(0);
- default:
- usage(progname);
- exit(1);
- }
- }
-
- if ((argc - optind) > 1) {
- usage(progname);
- exit(1);
- }
+ int readonly = 0;
+ int growable = 0;
+ const char *sopt = "hVc:d:rsnmgkt:T:";
+ const struct option lopt[] = {
+ { "help", 0, NULL, 'h' },
+ { "version", 0, NULL, 'V' },
+ { "offset", 1, NULL, 'o' },
+ { "cmd", 1, NULL, 'c' },
+ { "read-only", 0, NULL, 'r' },
+ { "snapshot", 0, NULL, 's' },
+ { "nocache", 0, NULL, 'n' },
+ { "misalign", 0, NULL, 'm' },
+ { "growable", 0, NULL, 'g' },
+ { "native-aio", 0, NULL, 'k' },
+ { "discard", 1, NULL, 'd' },
+ { "cache", 1, NULL, 't' },
+ { "trace", 1, NULL, 'T' },
+ { NULL, 0, NULL, 0 }
+ };
+ int c;
+ int opt_index = 0;
+ int flags = BDRV_O_UNMAP;
+
+#ifdef CONFIG_POSIX
+ signal(SIGPIPE, SIG_IGN);
+#endif
+
+ progname = basename(argv[0]);
+
+ while ((c = getopt_long(argc, argv, sopt, lopt, &opt_index)) != -1) {
+ switch (c) {
+ case 's':
+ flags |= BDRV_O_SNAPSHOT;
+ break;
+ case 'n':
+ flags |= BDRV_O_NOCACHE | BDRV_O_CACHE_WB;
+ break;
+ case 'd':
+ if (bdrv_parse_discard_flags(optarg, &flags) < 0) {
+ error_report("Invalid discard option: %s", optarg);
+ exit(1);
+ }
+ break;
+ case 'c':
+ add_user_command(optarg);
+ break;
+ case 'r':
+ readonly = 1;
+ break;
+ case 'm':
+ qemuio_misalign = 1;
+ break;
+ case 'g':
+ growable = 1;
+ break;
+ case 'k':
+ flags |= BDRV_O_NATIVE_AIO;
+ break;
+ case 't':
+ if (bdrv_parse_cache_flags(optarg, &flags) < 0) {
+ error_report("Invalid cache option: %s", optarg);
+ exit(1);
+ }
+ break;
+ case 'T':
+ if (!trace_backend_init(optarg, NULL)) {
+ exit(1); /* error message will have been printed */
+ }
+ break;
+ case 'V':
+ printf("%s version %s\n", progname, QEMU_VERSION);
+ exit(0);
+ case 'h':
+ usage(progname);
+ exit(0);
+ default:
+ usage(progname);
+ exit(1);
+ }
+ }
- bdrv_init();
+ if ((argc - optind) > 1) {
+ usage(progname);
+ exit(1);
+ }
- /* 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);
+ qemu_init_main_loop();
+ bdrv_init();
- add_args_command(init_args_command);
- add_check_command(init_check_command);
+ /* initialize commands */
+ qemuio_add_command(&quit_cmd);
+ qemuio_add_command(&open_cmd);
+ qemuio_add_command(&close_cmd);
- /* open the device */
- if (!readonly) {
- flags |= BDRV_O_RDWR;
- }
+ /* open the device */
+ if (!readonly) {
+ flags |= BDRV_O_RDWR;
+ }
- if ((argc - optind) == 1)
- openfile(argv[optind], flags, growable);
- command_loop();
+ if ((argc - optind) == 1) {
+ openfile(argv[optind], flags, growable, NULL);
+ }
+ command_loop();
- /*
- * Make sure all outstanding requests get flushed the program exits.
- */
- qemu_aio_flush();
+ /*
+ * Make sure all outstanding requests complete before the program exits.
+ */
+ bdrv_drain_all();
- if (bs)
- bdrv_close(bs);
- return 0;
+ if (qemuio_bs) {
+ bdrv_unref(qemuio_bs);
+ }
+ return 0;
}
projects / qemu.git / blobdiff