| /* |
| * 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-io.h" |
| #include "block/block_int.h" |
| #include "block/qapi.h" |
| #include "qemu/main-loop.h" |
| #include "qemu/timer.h" |
| |
| #define CMD_NOFILE_OK 0x01 |
| |
| bool qemuio_misalign; |
| |
| static cmdinfo_t *cmdtab; |
| static int ncmds; |
| |
| static int compare_cmdname(const void *a, const void *b) |
| { |
| return strcmp(((const cmdinfo_t *)a)->name, |
| ((const cmdinfo_t *)b)->name); |
| } |
| |
| void qemuio_add_command(const cmdinfo_t *ci) |
| { |
| cmdtab = g_renew(cmdinfo_t, cmdtab, ++ncmds); |
| cmdtab[ncmds - 1] = *ci; |
| qsort(cmdtab, ncmds, sizeof(*cmdtab), compare_cmdname); |
| } |
| |
| int qemuio_command_usage(const cmdinfo_t *ci) |
| { |
| printf("%s %s -- %s\n", ci->name, ci->args, ci->oneline); |
| return 0; |
| } |
| |
| static int init_check_command(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 int command(BlockDriverState *bs, const cmdinfo_t *ct, int argc, |
| char **argv) |
| { |
| char *cmd = argv[0]; |
| |
| if (!init_check_command(bs, ct)) { |
| return 0; |
| } |
| |
| if (argc - 1 < ct->argmin || (ct->argmax != -1 && argc - 1 > ct->argmax)) { |
| if (ct->argmax == -1) { |
| fprintf(stderr, |
| "bad argument count %d to %s, expected at least %d arguments\n", |
| argc-1, cmd, ct->argmin); |
| } else if (ct->argmin == ct->argmax) { |
| fprintf(stderr, |
| "bad argument count %d to %s, expected %d arguments\n", |
| argc-1, cmd, ct->argmin); |
| } else { |
| fprintf(stderr, |
| "bad argument count %d to %s, expected between %d and %d arguments\n", |
| argc-1, cmd, ct->argmin, ct->argmax); |
| } |
| return 0; |
| } |
| optind = 0; |
| return ct->cfunc(bs, argc, argv); |
| } |
| |
| static const cmdinfo_t *find_command(const char *cmd) |
| { |
| cmdinfo_t *ct; |
| |
| for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { |
| if (strcmp(ct->name, cmd) == 0 || |
| (ct->altname && strcmp(ct->altname, cmd) == 0)) |
| { |
| return (const cmdinfo_t *)ct; |
| } |
| } |
| return NULL; |
| } |
| |
| /* Invoke fn() for commands with a matching prefix */ |
| void qemuio_complete_command(const char *input, |
| void (*fn)(const char *cmd, void *opaque), |
| void *opaque) |
| { |
| cmdinfo_t *ct; |
| size_t input_len = strlen(input); |
| |
| for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { |
| if (strncmp(input, ct->name, input_len) == 0) { |
| fn(ct->name, opaque); |
| } |
| } |
| } |
| |
| static char **breakline(char *input, int *count) |
| { |
| int c = 0; |
| char *p; |
| char **rval = g_new0(char *, 1); |
| |
| while (rval && (p = qemu_strsep(&input, " ")) != NULL) { |
| if (!*p) { |
| continue; |
| } |
| c++; |
| rval = g_renew(char *, rval, (c + 1)); |
| rval[c - 1] = p; |
| rval[c] = NULL; |
| } |
| *count = c; |
| return rval; |
| } |
| |
| static int64_t cvtnum(const char *s) |
| { |
| char *end; |
| return strtosz_suffix(s, &end, STRTOSZ_DEFSUFFIX_B); |
| } |
| |
| #define EXABYTES(x) ((long long)(x) << 60) |
| #define PETABYTES(x) ((long long)(x) << 50) |
| #define TERABYTES(x) ((long long)(x) << 40) |
| #define GIGABYTES(x) ((long long)(x) << 30) |
| #define MEGABYTES(x) ((long long)(x) << 20) |
| #define KILOBYTES(x) ((long long)(x) << 10) |
| |
| #define TO_EXABYTES(x) ((x) / EXABYTES(1)) |
| #define TO_PETABYTES(x) ((x) / PETABYTES(1)) |
| #define TO_TERABYTES(x) ((x) / TERABYTES(1)) |
| #define TO_GIGABYTES(x) ((x) / GIGABYTES(1)) |
| #define TO_MEGABYTES(x) ((x) / MEGABYTES(1)) |
| #define TO_KILOBYTES(x) ((x) / KILOBYTES(1)) |
| |
| static void cvtstr(double value, char *str, size_t size) |
| { |
| char *trim; |
| const char *suffix; |
| |
| if (value >= EXABYTES(1)) { |
| suffix = " EiB"; |
| snprintf(str, size - 4, "%.3f", TO_EXABYTES(value)); |
| } else if (value >= PETABYTES(1)) { |
| suffix = " PiB"; |
| snprintf(str, size - 4, "%.3f", TO_PETABYTES(value)); |
| } else if (value >= TERABYTES(1)) { |
| suffix = " TiB"; |
| snprintf(str, size - 4, "%.3f", TO_TERABYTES(value)); |
| } else if (value >= GIGABYTES(1)) { |
| suffix = " GiB"; |
| snprintf(str, size - 4, "%.3f", TO_GIGABYTES(value)); |
| } else if (value >= MEGABYTES(1)) { |
| suffix = " MiB"; |
| snprintf(str, size - 4, "%.3f", TO_MEGABYTES(value)); |
| } else if (value >= KILOBYTES(1)) { |
| suffix = " KiB"; |
| snprintf(str, size - 4, "%.3f", TO_KILOBYTES(value)); |
| } else { |
| suffix = " bytes"; |
| snprintf(str, size - 6, "%f", value); |
| } |
| |
| trim = strstr(str, ".000"); |
| if (trim) { |
| strcpy(trim, suffix); |
| } else { |
| strcat(str, suffix); |
| } |
| } |
| |
| |
| |
| static struct timeval tsub(struct timeval t1, struct timeval t2) |
| { |
| t1.tv_usec -= t2.tv_usec; |
| if (t1.tv_usec < 0) { |
| t1.tv_usec += 1000000; |
| t1.tv_sec--; |
| } |
| t1.tv_sec -= t2.tv_sec; |
| return t1; |
| } |
| |
| static double tdiv(double value, struct timeval tv) |
| { |
| return value / ((double)tv.tv_sec + ((double)tv.tv_usec / 1000000.0)); |
| } |
| |
| #define HOURS(sec) ((sec) / (60 * 60)) |
| #define MINUTES(sec) (((sec) % (60 * 60)) / 60) |
| #define SECONDS(sec) ((sec) % 60) |
| |
| enum { |
| DEFAULT_TIME = 0x0, |
| TERSE_FIXED_TIME = 0x1, |
| VERBOSE_FIXED_TIME = 0x2, |
| }; |
| |
| static void timestr(struct timeval *tv, char *ts, size_t size, int format) |
| { |
| double usec = (double)tv->tv_usec / 1000000.0; |
| |
| if (format & TERSE_FIXED_TIME) { |
| if (!HOURS(tv->tv_sec)) { |
| snprintf(ts, size, "%u:%02u.%02u", |
| (unsigned int) MINUTES(tv->tv_sec), |
| (unsigned int) SECONDS(tv->tv_sec), |
| (unsigned int) (usec * 100)); |
| return; |
| } |
| format |= VERBOSE_FIXED_TIME; /* fallback if hours needed */ |
| } |
| |
| if ((format & VERBOSE_FIXED_TIME) || tv->tv_sec) { |
| snprintf(ts, size, "%u:%02u:%02u.%02u", |
| (unsigned int) HOURS(tv->tv_sec), |
| (unsigned int) MINUTES(tv->tv_sec), |
| (unsigned int) SECONDS(tv->tv_sec), |
| (unsigned int) (usec * 100)); |
| } else { |
| snprintf(ts, size, "0.%04u sec", (unsigned int) (usec * 10000)); |
| } |
| } |
| |
| /* |
| * 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, 0); |
| 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) { |
| aio_poll(bdrv_get_aio_context(bs), true); |
| } |
| 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 qemuio_command_usage(&read_cmd); |
| } |
| } |
| |
| if (optind != argc - 2) { |
| return qemuio_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 qemuio_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 qemuio_command_usage(&readv_cmd); |
| } |
| } |
| |
| if (optind > argc - 2) { |
| return qemuio_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 qemuio_command_usage(&write_cmd); |
| } |
| } |
| |
| if (optind != argc - 2) { |
| return qemuio_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" |
| " 'writev 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 qemuio_command_usage(&writev_cmd); |
| } |
| } |
| |
| if (optind > argc - 2) { |
| return qemuio_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 qemuio_command_usage(&writev_cmd); |
| } |
| } |
| |
| if (optind > argc - 2) { |
| return qemuio_command_usage(&writev_cmd); |
| } |
| |
| nr_reqs = 1; |
| for (i = optind; i < argc; i++) { |
| if (!strcmp(argv[i], ";")) { |
| nr_reqs++; |
| } |
| } |
| |
| reqs = g_new0(BlockRequest, nr_reqs); |
| buf = g_new0(char *, nr_reqs); |
| qiovs = g_new(QEMUIOVector, nr_reqs); |
| |
| 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 qemuio_command_usage(&aio_read_cmd); |
| } |
| } |
| |
| if (optind > argc - 2) { |
| g_free(ctx); |
| return qemuio_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 qemuio_command_usage(&aio_write_cmd); |
| } |
| } |
| |
| if (optind > argc - 2) { |
| g_free(ctx); |
| return qemuio_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; |
| ImageInfoSpecific *spec_info; |
| 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); |
| |
| spec_info = bdrv_get_specific_info(bs); |
| if (spec_info) { |
| printf("Format specific information:\n"); |
| bdrv_image_info_specific_dump(fprintf, stdout, spec_info); |
| qapi_free_ImageInfoSpecific(spec_info); |
| } |
| |
| 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 qemuio_command_usage(&discard_cmd); |
| } |
| } |
| |
| if (optind != argc - 2) { |
| return qemuio_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); |
| if (ret < 0) { |
| printf("is_allocated failed: %s\n", strerror(-ret)); |
| return 0; |
| } |
| 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 && num) { |
| *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; |
| } else if (!num) { |
| error_report("Unexpected end of image"); |
| 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 int remove_break_f(BlockDriverState *bs, int argc, char **argv) |
| { |
| int ret; |
| |
| ret = bdrv_debug_remove_breakpoint(bs, argv[1]); |
| if (ret < 0) { |
| printf("Could not remove breakpoint %s: %s\n", argv[1], 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 const cmdinfo_t remove_break_cmd = { |
| .name = "remove_break", |
| .argmin = 1, |
| .argmax = 1, |
| .cfunc = remove_break_f, |
| .args = "tag", |
| .oneline = "remove a breakpoint by 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])) { |
| aio_poll(bdrv_get_aio_context(bs), true); |
| } |
| |
| 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 void sleep_cb(void *opaque) |
| { |
| bool *expired = opaque; |
| *expired = true; |
| } |
| |
| static int sleep_f(BlockDriverState *bs, int argc, char **argv) |
| { |
| char *endptr; |
| long ms; |
| struct QEMUTimer *timer; |
| bool expired = false; |
| |
| ms = strtol(argv[1], &endptr, 0); |
| if (ms < 0 || *endptr != '\0') { |
| printf("%s is not a valid number\n", argv[1]); |
| return 0; |
| } |
| |
| timer = timer_new_ns(QEMU_CLOCK_HOST, sleep_cb, &expired); |
| timer_mod(timer, qemu_clock_get_ns(QEMU_CLOCK_HOST) + SCALE_MS * ms); |
| |
| while (!expired) { |
| main_loop_wait(false); |
| } |
| |
| timer_free(timer); |
| |
| return 0; |
| } |
| |
| static const cmdinfo_t sleep_cmd = { |
| .name = "sleep", |
| .argmin = 1, |
| .argmax = 1, |
| .cfunc = sleep_f, |
| .flags = CMD_NOFILE_OK, |
| .oneline = "waits for the given value in milliseconds", |
| }; |
| |
| static void help_oneline(const char *cmd, const cmdinfo_t *ct) |
| { |
| if (cmd) { |
| printf("%s ", cmd); |
| } else { |
| printf("%s ", ct->name); |
| if (ct->altname) { |
| printf("(or %s) ", ct->altname); |
| } |
| } |
| |
| if (ct->args) { |
| printf("%s ", ct->args); |
| } |
| printf("-- %s\n", ct->oneline); |
| } |
| |
| static void help_onecmd(const char *cmd, const cmdinfo_t *ct) |
| { |
| help_oneline(cmd, ct); |
| if (ct->help) { |
| ct->help(); |
| } |
| } |
| |
| static void help_all(void) |
| { |
| const cmdinfo_t *ct; |
| |
| for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { |
| help_oneline(ct->name, ct); |
| } |
| printf("\nUse 'help commandname' for extended help.\n"); |
| } |
| |
| static int help_f(BlockDriverState *bs, int argc, char **argv) |
| { |
| const cmdinfo_t *ct; |
| |
| if (argc == 1) { |
| help_all(); |
| return 0; |
| } |
| |
| ct = find_command(argv[1]); |
| if (ct == NULL) { |
| printf("command %s not found\n", argv[1]); |
| return 0; |
| } |
| |
| help_onecmd(argv[1], ct); |
| return 0; |
| } |
| |
| static const cmdinfo_t help_cmd = { |
| .name = "help", |
| .altname = "?", |
| .cfunc = help_f, |
| .argmin = 0, |
| .argmax = 1, |
| .flags = CMD_FLAG_GLOBAL, |
| .args = "[command]", |
| .oneline = "help for one or all commands", |
| }; |
| |
| bool qemuio_command(BlockDriverState *bs, const char *cmd) |
| { |
| char *input; |
| const cmdinfo_t *ct; |
| char **v; |
| int c; |
| bool done = false; |
| |
| input = g_strdup(cmd); |
| v = breakline(input, &c); |
| if (c) { |
| ct = find_command(v[0]); |
| if (ct) { |
| done = command(bs, ct, c, v); |
| } else { |
| fprintf(stderr, "command \"%s\" not found\n", v[0]); |
| } |
| } |
| g_free(input); |
| g_free(v); |
| |
| return done; |
| } |
| |
| static void __attribute((constructor)) init_qemuio_commands(void) |
| { |
| /* initialize commands */ |
| qemuio_add_command(&help_cmd); |
| qemuio_add_command(&read_cmd); |
| qemuio_add_command(&readv_cmd); |
| qemuio_add_command(&write_cmd); |
| qemuio_add_command(&writev_cmd); |
| qemuio_add_command(&multiwrite_cmd); |
| qemuio_add_command(&aio_read_cmd); |
| qemuio_add_command(&aio_write_cmd); |
| qemuio_add_command(&aio_flush_cmd); |
| qemuio_add_command(&flush_cmd); |
| qemuio_add_command(&truncate_cmd); |
| qemuio_add_command(&length_cmd); |
| qemuio_add_command(&info_cmd); |
| qemuio_add_command(&discard_cmd); |
| qemuio_add_command(&alloc_cmd); |
| qemuio_add_command(&map_cmd); |
| qemuio_add_command(&break_cmd); |
| qemuio_add_command(&remove_break_cmd); |
| qemuio_add_command(&resume_cmd); |
| qemuio_add_command(&wait_break_cmd); |
| qemuio_add_command(&abort_cmd); |
| qemuio_add_command(&sleep_cmd); |
| } |
