root / qemu-io-cmds.c @ feature-archipelago
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/*
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* Command line utility to exercise the QEMU I/O path.
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*
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* Copyright (C) 2009 Red Hat, Inc.
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* Copyright (c) 2003-2005 Silicon Graphics, Inc.
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#include "qemu-io.h" |
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#include "block/block_int.h" |
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#include "block/qapi.h" |
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#include "qemu/main-loop.h" |
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#include "qemu/timer.h" |
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|
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#define CMD_NOFILE_OK 0x01 |
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int qemuio_misalign;
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static cmdinfo_t *cmdtab;
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static int ncmds; |
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static int compare_cmdname(const void *a, const void *b) |
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{ |
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return strcmp(((const cmdinfo_t *)a)->name, |
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((const cmdinfo_t *)b)->name);
|
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} |
29 |
|
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void qemuio_add_command(const cmdinfo_t *ci) |
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{ |
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cmdtab = g_realloc(cmdtab, ++ncmds * sizeof(*cmdtab));
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cmdtab[ncmds - 1] = *ci;
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qsort(cmdtab, ncmds, sizeof(*cmdtab), compare_cmdname);
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} |
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|
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int qemuio_command_usage(const cmdinfo_t *ci) |
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{ |
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printf("%s %s -- %s\n", ci->name, ci->args, ci->oneline);
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return 0; |
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} |
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|
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static int init_check_command(BlockDriverState *bs, const cmdinfo_t *ct) |
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{ |
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if (ct->flags & CMD_FLAG_GLOBAL) {
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return 1; |
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} |
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if (!(ct->flags & CMD_NOFILE_OK) && !bs) {
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fprintf(stderr, "no file open, try 'help open'\n");
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return 0; |
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} |
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return 1; |
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} |
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|
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static int command(BlockDriverState *bs, const cmdinfo_t *ct, int argc, |
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char **argv)
|
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{ |
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char *cmd = argv[0]; |
59 |
|
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if (!init_check_command(bs, ct)) {
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return 0; |
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} |
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|
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if (argc - 1 < ct->argmin || (ct->argmax != -1 && argc - 1 > ct->argmax)) { |
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if (ct->argmax == -1) { |
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fprintf(stderr, |
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"bad argument count %d to %s, expected at least %d arguments\n",
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argc-1, cmd, ct->argmin);
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} else if (ct->argmin == ct->argmax) { |
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fprintf(stderr, |
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"bad argument count %d to %s, expected %d arguments\n",
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argc-1, cmd, ct->argmin);
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} else {
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fprintf(stderr, |
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"bad argument count %d to %s, expected between %d and %d arguments\n",
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argc-1, cmd, ct->argmin, ct->argmax);
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} |
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return 0; |
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} |
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optind = 0;
|
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return ct->cfunc(bs, argc, argv);
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} |
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|
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static const cmdinfo_t *find_command(const char *cmd) |
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{ |
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cmdinfo_t *ct; |
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|
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for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) {
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if (strcmp(ct->name, cmd) == 0 || |
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(ct->altname && strcmp(ct->altname, cmd) == 0))
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{ |
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return (const cmdinfo_t *)ct; |
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} |
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} |
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return NULL; |
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} |
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|
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/* Invoke fn() for commands with a matching prefix */
|
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void qemuio_complete_command(const char *input, |
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void (*fn)(const char *cmd, void *opaque), |
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void *opaque)
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{ |
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cmdinfo_t *ct; |
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size_t input_len = strlen(input); |
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for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) {
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if (strncmp(input, ct->name, input_len) == 0) { |
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fn(ct->name, opaque); |
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} |
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} |
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} |
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|
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static char **breakline(char *input, int *count) |
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{ |
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int c = 0; |
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char *p;
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char **rval = g_malloc0(sizeof(char *)); |
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char **tmp;
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|
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while (rval && (p = qemu_strsep(&input, " ")) != NULL) { |
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if (!*p) {
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continue;
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} |
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c++; |
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tmp = g_realloc(rval, sizeof(*rval) * (c + 1)); |
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if (!tmp) {
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g_free(rval); |
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rval = NULL;
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c = 0;
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break;
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} else {
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rval = tmp; |
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} |
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rval[c - 1] = p;
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rval[c] = NULL;
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} |
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*count = c; |
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return rval;
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} |
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static int64_t cvtnum(const char *s) |
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{ |
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char *end;
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return strtosz_suffix(s, &end, STRTOSZ_DEFSUFFIX_B);
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} |
146 |
|
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#define EXABYTES(x) ((long long)(x) << 60) |
148 |
#define PETABYTES(x) ((long long)(x) << 50) |
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#define TERABYTES(x) ((long long)(x) << 40) |
150 |
#define GIGABYTES(x) ((long long)(x) << 30) |
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#define MEGABYTES(x) ((long long)(x) << 20) |
152 |
#define KILOBYTES(x) ((long long)(x) << 10) |
153 |
|
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#define TO_EXABYTES(x) ((x) / EXABYTES(1)) |
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#define TO_PETABYTES(x) ((x) / PETABYTES(1)) |
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#define TO_TERABYTES(x) ((x) / TERABYTES(1)) |
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#define TO_GIGABYTES(x) ((x) / GIGABYTES(1)) |
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#define TO_MEGABYTES(x) ((x) / MEGABYTES(1)) |
159 |
#define TO_KILOBYTES(x) ((x) / KILOBYTES(1)) |
160 |
|
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static void cvtstr(double value, char *str, size_t size) |
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{ |
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char *trim;
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const char *suffix; |
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if (value >= EXABYTES(1)) { |
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suffix = " EiB";
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snprintf(str, size - 4, "%.3f", TO_EXABYTES(value)); |
169 |
} else if (value >= PETABYTES(1)) { |
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suffix = " PiB";
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snprintf(str, size - 4, "%.3f", TO_PETABYTES(value)); |
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} else if (value >= TERABYTES(1)) { |
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suffix = " TiB";
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snprintf(str, size - 4, "%.3f", TO_TERABYTES(value)); |
175 |
} else if (value >= GIGABYTES(1)) { |
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suffix = " GiB";
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snprintf(str, size - 4, "%.3f", TO_GIGABYTES(value)); |
178 |
} else if (value >= MEGABYTES(1)) { |
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suffix = " MiB";
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snprintf(str, size - 4, "%.3f", TO_MEGABYTES(value)); |
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} else if (value >= KILOBYTES(1)) { |
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suffix = " KiB";
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snprintf(str, size - 4, "%.3f", TO_KILOBYTES(value)); |
184 |
} else {
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suffix = " bytes";
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snprintf(str, size - 6, "%f", value); |
187 |
} |
188 |
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trim = strstr(str, ".000");
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if (trim) {
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strcpy(trim, suffix); |
192 |
} else {
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strcat(str, suffix); |
194 |
} |
195 |
} |
196 |
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|
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static struct timeval tsub(struct timeval t1, struct timeval t2) |
200 |
{ |
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t1.tv_usec -= t2.tv_usec; |
202 |
if (t1.tv_usec < 0) { |
203 |
t1.tv_usec += 1000000;
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t1.tv_sec--; |
205 |
} |
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t1.tv_sec -= t2.tv_sec; |
207 |
return t1;
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} |
209 |
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static double tdiv(double value, struct timeval tv) |
211 |
{ |
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return value / ((double)tv.tv_sec + ((double)tv.tv_usec / 1000000.0)); |
213 |
} |
214 |
|
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#define HOURS(sec) ((sec) / (60 * 60)) |
216 |
#define MINUTES(sec) (((sec) % (60 * 60)) / 60) |
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#define SECONDS(sec) ((sec) % 60) |
218 |
|
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enum {
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DEFAULT_TIME = 0x0,
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TERSE_FIXED_TIME = 0x1,
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VERBOSE_FIXED_TIME = 0x2,
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223 |
}; |
224 |
|
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static void timestr(struct timeval *tv, char *ts, size_t size, int format) |
226 |
{ |
227 |
double usec = (double)tv->tv_usec / 1000000.0; |
228 |
|
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if (format & TERSE_FIXED_TIME) {
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if (!HOURS(tv->tv_sec)) {
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snprintf(ts, size, "%u:%02u.%02u",
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(unsigned int) MINUTES(tv->tv_sec), |
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(unsigned int) SECONDS(tv->tv_sec), |
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(unsigned int) (usec * 100)); |
235 |
return;
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} |
237 |
format |= VERBOSE_FIXED_TIME; /* fallback if hours needed */
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} |
239 |
|
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if ((format & VERBOSE_FIXED_TIME) || tv->tv_sec) {
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snprintf(ts, size, "%u:%02u:%02u.%02u",
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(unsigned int) HOURS(tv->tv_sec), |
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(unsigned int) MINUTES(tv->tv_sec), |
244 |
(unsigned int) SECONDS(tv->tv_sec), |
245 |
(unsigned int) (usec * 100)); |
246 |
} else {
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snprintf(ts, size, "0.%04u sec", (unsigned int) (usec * 10000)); |
248 |
} |
249 |
} |
250 |
|
251 |
/*
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* Parse the pattern argument to various sub-commands.
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*
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* Because the pattern is used as an argument to memset it must evaluate
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* to an unsigned integer that fits into a single byte.
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*/
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257 |
static int parse_pattern(const char *arg) |
258 |
{ |
259 |
char *endptr = NULL; |
260 |
long pattern;
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261 |
|
262 |
pattern = strtol(arg, &endptr, 0);
|
263 |
if (pattern < 0 || pattern > UCHAR_MAX || *endptr != '\0') { |
264 |
printf("%s is not a valid pattern byte\n", arg);
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return -1; |
266 |
} |
267 |
|
268 |
return pattern;
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} |
270 |
|
271 |
/*
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272 |
* Memory allocation helpers.
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273 |
*
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* Make sure memory is aligned by default, or purposefully misaligned if
|
275 |
* that is specified on the command line.
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276 |
*/
|
277 |
|
278 |
#define MISALIGN_OFFSET 16 |
279 |
static void *qemu_io_alloc(BlockDriverState *bs, size_t len, int pattern) |
280 |
{ |
281 |
void *buf;
|
282 |
|
283 |
if (qemuio_misalign) {
|
284 |
len += MISALIGN_OFFSET; |
285 |
} |
286 |
buf = qemu_blockalign(bs, len); |
287 |
memset(buf, pattern, len); |
288 |
if (qemuio_misalign) {
|
289 |
buf += MISALIGN_OFFSET; |
290 |
} |
291 |
return buf;
|
292 |
} |
293 |
|
294 |
static void qemu_io_free(void *p) |
295 |
{ |
296 |
if (qemuio_misalign) {
|
297 |
p -= MISALIGN_OFFSET; |
298 |
} |
299 |
qemu_vfree(p); |
300 |
} |
301 |
|
302 |
static void dump_buffer(const void *buffer, int64_t offset, int len) |
303 |
{ |
304 |
int i, j;
|
305 |
const uint8_t *p;
|
306 |
|
307 |
for (i = 0, p = buffer; i < len; i += 16) { |
308 |
const uint8_t *s = p;
|
309 |
|
310 |
printf("%08" PRIx64 ": ", offset + i); |
311 |
for (j = 0; j < 16 && i + j < len; j++, p++) { |
312 |
printf("%02x ", *p);
|
313 |
} |
314 |
printf(" ");
|
315 |
for (j = 0; j < 16 && i + j < len; j++, s++) { |
316 |
if (isalnum(*s)) {
|
317 |
printf("%c", *s);
|
318 |
} else {
|
319 |
printf(".");
|
320 |
} |
321 |
} |
322 |
printf("\n");
|
323 |
} |
324 |
} |
325 |
|
326 |
static void print_report(const char *op, struct timeval *t, int64_t offset, |
327 |
int count, int total, int cnt, int Cflag) |
328 |
{ |
329 |
char s1[64], s2[64], ts[64]; |
330 |
|
331 |
timestr(t, ts, sizeof(ts), Cflag ? VERBOSE_FIXED_TIME : 0); |
332 |
if (!Cflag) {
|
333 |
cvtstr((double)total, s1, sizeof(s1)); |
334 |
cvtstr(tdiv((double)total, *t), s2, sizeof(s2)); |
335 |
printf("%s %d/%d bytes at offset %" PRId64 "\n", |
336 |
op, total, count, offset); |
337 |
printf("%s, %d ops; %s (%s/sec and %.4f ops/sec)\n",
|
338 |
s1, cnt, ts, s2, tdiv((double)cnt, *t));
|
339 |
} else {/* bytes,ops,time,bytes/sec,ops/sec */ |
340 |
printf("%d,%d,%s,%.3f,%.3f\n",
|
341 |
total, cnt, ts, |
342 |
tdiv((double)total, *t),
|
343 |
tdiv((double)cnt, *t));
|
344 |
} |
345 |
} |
346 |
|
347 |
/*
|
348 |
* Parse multiple length statements for vectored I/O, and construct an I/O
|
349 |
* vector matching it.
|
350 |
*/
|
351 |
static void * |
352 |
create_iovec(BlockDriverState *bs, QEMUIOVector *qiov, char **argv, int nr_iov, |
353 |
int pattern)
|
354 |
{ |
355 |
size_t *sizes = g_new0(size_t, nr_iov); |
356 |
size_t count = 0;
|
357 |
void *buf = NULL; |
358 |
void *p;
|
359 |
int i;
|
360 |
|
361 |
for (i = 0; i < nr_iov; i++) { |
362 |
char *arg = argv[i];
|
363 |
int64_t len; |
364 |
|
365 |
len = cvtnum(arg); |
366 |
if (len < 0) { |
367 |
printf("non-numeric length argument -- %s\n", arg);
|
368 |
goto fail;
|
369 |
} |
370 |
|
371 |
/* should be SIZE_T_MAX, but that doesn't exist */
|
372 |
if (len > INT_MAX) {
|
373 |
printf("too large length argument -- %s\n", arg);
|
374 |
goto fail;
|
375 |
} |
376 |
|
377 |
if (len & 0x1ff) { |
378 |
printf("length argument %" PRId64
|
379 |
" is not sector aligned\n", len);
|
380 |
goto fail;
|
381 |
} |
382 |
|
383 |
sizes[i] = len; |
384 |
count += len; |
385 |
} |
386 |
|
387 |
qemu_iovec_init(qiov, nr_iov); |
388 |
|
389 |
buf = p = qemu_io_alloc(bs, count, pattern); |
390 |
|
391 |
for (i = 0; i < nr_iov; i++) { |
392 |
qemu_iovec_add(qiov, p, sizes[i]); |
393 |
p += sizes[i]; |
394 |
} |
395 |
|
396 |
fail:
|
397 |
g_free(sizes); |
398 |
return buf;
|
399 |
} |
400 |
|
401 |
static int do_read(BlockDriverState *bs, char *buf, int64_t offset, int count, |
402 |
int *total)
|
403 |
{ |
404 |
int ret;
|
405 |
|
406 |
ret = bdrv_read(bs, offset >> 9, (uint8_t *)buf, count >> 9); |
407 |
if (ret < 0) { |
408 |
return ret;
|
409 |
} |
410 |
*total = count; |
411 |
return 1; |
412 |
} |
413 |
|
414 |
static int do_write(BlockDriverState *bs, char *buf, int64_t offset, int count, |
415 |
int *total)
|
416 |
{ |
417 |
int ret;
|
418 |
|
419 |
ret = bdrv_write(bs, offset >> 9, (uint8_t *)buf, count >> 9); |
420 |
if (ret < 0) { |
421 |
return ret;
|
422 |
} |
423 |
*total = count; |
424 |
return 1; |
425 |
} |
426 |
|
427 |
static int do_pread(BlockDriverState *bs, char *buf, int64_t offset, int count, |
428 |
int *total)
|
429 |
{ |
430 |
*total = bdrv_pread(bs, offset, (uint8_t *)buf, count); |
431 |
if (*total < 0) { |
432 |
return *total;
|
433 |
} |
434 |
return 1; |
435 |
} |
436 |
|
437 |
static int do_pwrite(BlockDriverState *bs, char *buf, int64_t offset, int count, |
438 |
int *total)
|
439 |
{ |
440 |
*total = bdrv_pwrite(bs, offset, (uint8_t *)buf, count); |
441 |
if (*total < 0) { |
442 |
return *total;
|
443 |
} |
444 |
return 1; |
445 |
} |
446 |
|
447 |
typedef struct { |
448 |
BlockDriverState *bs; |
449 |
int64_t offset; |
450 |
int count;
|
451 |
int *total;
|
452 |
int ret;
|
453 |
bool done;
|
454 |
} CoWriteZeroes; |
455 |
|
456 |
static void coroutine_fn co_write_zeroes_entry(void *opaque) |
457 |
{ |
458 |
CoWriteZeroes *data = opaque; |
459 |
|
460 |
data->ret = bdrv_co_write_zeroes(data->bs, data->offset / BDRV_SECTOR_SIZE, |
461 |
data->count / BDRV_SECTOR_SIZE, 0);
|
462 |
data->done = true;
|
463 |
if (data->ret < 0) { |
464 |
*data->total = data->ret; |
465 |
return;
|
466 |
} |
467 |
|
468 |
*data->total = data->count; |
469 |
} |
470 |
|
471 |
static int do_co_write_zeroes(BlockDriverState *bs, int64_t offset, int count, |
472 |
int *total)
|
473 |
{ |
474 |
Coroutine *co; |
475 |
CoWriteZeroes data = { |
476 |
.bs = bs, |
477 |
.offset = offset, |
478 |
.count = count, |
479 |
.total = total, |
480 |
.done = false,
|
481 |
}; |
482 |
|
483 |
co = qemu_coroutine_create(co_write_zeroes_entry); |
484 |
qemu_coroutine_enter(co, &data); |
485 |
while (!data.done) {
|
486 |
qemu_aio_wait(); |
487 |
} |
488 |
if (data.ret < 0) { |
489 |
return data.ret;
|
490 |
} else {
|
491 |
return 1; |
492 |
} |
493 |
} |
494 |
|
495 |
static int do_write_compressed(BlockDriverState *bs, char *buf, int64_t offset, |
496 |
int count, int *total) |
497 |
{ |
498 |
int ret;
|
499 |
|
500 |
ret = bdrv_write_compressed(bs, offset >> 9, (uint8_t *)buf, count >> 9); |
501 |
if (ret < 0) { |
502 |
return ret;
|
503 |
} |
504 |
*total = count; |
505 |
return 1; |
506 |
} |
507 |
|
508 |
static int do_load_vmstate(BlockDriverState *bs, char *buf, int64_t offset, |
509 |
int count, int *total) |
510 |
{ |
511 |
*total = bdrv_load_vmstate(bs, (uint8_t *)buf, offset, count); |
512 |
if (*total < 0) { |
513 |
return *total;
|
514 |
} |
515 |
return 1; |
516 |
} |
517 |
|
518 |
static int do_save_vmstate(BlockDriverState *bs, char *buf, int64_t offset, |
519 |
int count, int *total) |
520 |
{ |
521 |
*total = bdrv_save_vmstate(bs, (uint8_t *)buf, offset, count); |
522 |
if (*total < 0) { |
523 |
return *total;
|
524 |
} |
525 |
return 1; |
526 |
} |
527 |
|
528 |
#define NOT_DONE 0x7fffffff |
529 |
static void aio_rw_done(void *opaque, int ret) |
530 |
{ |
531 |
*(int *)opaque = ret;
|
532 |
} |
533 |
|
534 |
static int do_aio_readv(BlockDriverState *bs, QEMUIOVector *qiov, |
535 |
int64_t offset, int *total)
|
536 |
{ |
537 |
int async_ret = NOT_DONE;
|
538 |
|
539 |
bdrv_aio_readv(bs, offset >> 9, qiov, qiov->size >> 9, |
540 |
aio_rw_done, &async_ret); |
541 |
while (async_ret == NOT_DONE) {
|
542 |
main_loop_wait(false);
|
543 |
} |
544 |
|
545 |
*total = qiov->size; |
546 |
return async_ret < 0 ? async_ret : 1; |
547 |
} |
548 |
|
549 |
static int do_aio_writev(BlockDriverState *bs, QEMUIOVector *qiov, |
550 |
int64_t offset, int *total)
|
551 |
{ |
552 |
int async_ret = NOT_DONE;
|
553 |
|
554 |
bdrv_aio_writev(bs, offset >> 9, qiov, qiov->size >> 9, |
555 |
aio_rw_done, &async_ret); |
556 |
while (async_ret == NOT_DONE) {
|
557 |
main_loop_wait(false);
|
558 |
} |
559 |
|
560 |
*total = qiov->size; |
561 |
return async_ret < 0 ? async_ret : 1; |
562 |
} |
563 |
|
564 |
struct multiwrite_async_ret {
|
565 |
int num_done;
|
566 |
int error;
|
567 |
}; |
568 |
|
569 |
static void multiwrite_cb(void *opaque, int ret) |
570 |
{ |
571 |
struct multiwrite_async_ret *async_ret = opaque;
|
572 |
|
573 |
async_ret->num_done++; |
574 |
if (ret < 0) { |
575 |
async_ret->error = ret; |
576 |
} |
577 |
} |
578 |
|
579 |
static int do_aio_multiwrite(BlockDriverState *bs, BlockRequest* reqs, |
580 |
int num_reqs, int *total) |
581 |
{ |
582 |
int i, ret;
|
583 |
struct multiwrite_async_ret async_ret = {
|
584 |
.num_done = 0,
|
585 |
.error = 0,
|
586 |
}; |
587 |
|
588 |
*total = 0;
|
589 |
for (i = 0; i < num_reqs; i++) { |
590 |
reqs[i].cb = multiwrite_cb; |
591 |
reqs[i].opaque = &async_ret; |
592 |
*total += reqs[i].qiov->size; |
593 |
} |
594 |
|
595 |
ret = bdrv_aio_multiwrite(bs, reqs, num_reqs); |
596 |
if (ret < 0) { |
597 |
return ret;
|
598 |
} |
599 |
|
600 |
while (async_ret.num_done < num_reqs) {
|
601 |
main_loop_wait(false);
|
602 |
} |
603 |
|
604 |
return async_ret.error < 0 ? async_ret.error : 1; |
605 |
} |
606 |
|
607 |
static void read_help(void) |
608 |
{ |
609 |
printf( |
610 |
"\n"
|
611 |
" reads a range of bytes from the given offset\n"
|
612 |
"\n"
|
613 |
" Example:\n"
|
614 |
" 'read -v 512 1k' - dumps 1 kilobyte read from 512 bytes into the file\n"
|
615 |
"\n"
|
616 |
" Reads a segment of the currently open file, optionally dumping it to the\n"
|
617 |
" standard output stream (with -v option) for subsequent inspection.\n"
|
618 |
" -b, -- read from the VM state rather than the virtual disk\n"
|
619 |
" -C, -- report statistics in a machine parsable format\n"
|
620 |
" -l, -- length for pattern verification (only with -P)\n"
|
621 |
" -p, -- use bdrv_pread to read the file\n"
|
622 |
" -P, -- use a pattern to verify read data\n"
|
623 |
" -q, -- quiet mode, do not show I/O statistics\n"
|
624 |
" -s, -- start offset for pattern verification (only with -P)\n"
|
625 |
" -v, -- dump buffer to standard output\n"
|
626 |
"\n");
|
627 |
} |
628 |
|
629 |
static int read_f(BlockDriverState *bs, int argc, char **argv); |
630 |
|
631 |
static const cmdinfo_t read_cmd = { |
632 |
.name = "read",
|
633 |
.altname = "r",
|
634 |
.cfunc = read_f, |
635 |
.argmin = 2,
|
636 |
.argmax = -1,
|
637 |
.args = "[-abCpqv] [-P pattern [-s off] [-l len]] off len",
|
638 |
.oneline = "reads a number of bytes at a specified offset",
|
639 |
.help = read_help, |
640 |
}; |
641 |
|
642 |
static int read_f(BlockDriverState *bs, int argc, char **argv) |
643 |
{ |
644 |
struct timeval t1, t2;
|
645 |
int Cflag = 0, pflag = 0, qflag = 0, vflag = 0; |
646 |
int Pflag = 0, sflag = 0, lflag = 0, bflag = 0; |
647 |
int c, cnt;
|
648 |
char *buf;
|
649 |
int64_t offset; |
650 |
int count;
|
651 |
/* Some compilers get confused and warn if this is not initialized. */
|
652 |
int total = 0; |
653 |
int pattern = 0, pattern_offset = 0, pattern_count = 0; |
654 |
|
655 |
while ((c = getopt(argc, argv, "bCl:pP:qs:v")) != EOF) { |
656 |
switch (c) {
|
657 |
case 'b': |
658 |
bflag = 1;
|
659 |
break;
|
660 |
case 'C': |
661 |
Cflag = 1;
|
662 |
break;
|
663 |
case 'l': |
664 |
lflag = 1;
|
665 |
pattern_count = cvtnum(optarg); |
666 |
if (pattern_count < 0) { |
667 |
printf("non-numeric length argument -- %s\n", optarg);
|
668 |
return 0; |
669 |
} |
670 |
break;
|
671 |
case 'p': |
672 |
pflag = 1;
|
673 |
break;
|
674 |
case 'P': |
675 |
Pflag = 1;
|
676 |
pattern = parse_pattern(optarg); |
677 |
if (pattern < 0) { |
678 |
return 0; |
679 |
} |
680 |
break;
|
681 |
case 'q': |
682 |
qflag = 1;
|
683 |
break;
|
684 |
case 's': |
685 |
sflag = 1;
|
686 |
pattern_offset = cvtnum(optarg); |
687 |
if (pattern_offset < 0) { |
688 |
printf("non-numeric length argument -- %s\n", optarg);
|
689 |
return 0; |
690 |
} |
691 |
break;
|
692 |
case 'v': |
693 |
vflag = 1;
|
694 |
break;
|
695 |
default:
|
696 |
return qemuio_command_usage(&read_cmd);
|
697 |
} |
698 |
} |
699 |
|
700 |
if (optind != argc - 2) { |
701 |
return qemuio_command_usage(&read_cmd);
|
702 |
} |
703 |
|
704 |
if (bflag && pflag) {
|
705 |
printf("-b and -p cannot be specified at the same time\n");
|
706 |
return 0; |
707 |
} |
708 |
|
709 |
offset = cvtnum(argv[optind]); |
710 |
if (offset < 0) { |
711 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
712 |
return 0; |
713 |
} |
714 |
|
715 |
optind++; |
716 |
count = cvtnum(argv[optind]); |
717 |
if (count < 0) { |
718 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
719 |
return 0; |
720 |
} |
721 |
|
722 |
if (!Pflag && (lflag || sflag)) {
|
723 |
return qemuio_command_usage(&read_cmd);
|
724 |
} |
725 |
|
726 |
if (!lflag) {
|
727 |
pattern_count = count - pattern_offset; |
728 |
} |
729 |
|
730 |
if ((pattern_count < 0) || (pattern_count + pattern_offset > count)) { |
731 |
printf("pattern verification range exceeds end of read data\n");
|
732 |
return 0; |
733 |
} |
734 |
|
735 |
if (!pflag) {
|
736 |
if (offset & 0x1ff) { |
737 |
printf("offset %" PRId64 " is not sector aligned\n", |
738 |
offset); |
739 |
return 0; |
740 |
} |
741 |
if (count & 0x1ff) { |
742 |
printf("count %d is not sector aligned\n",
|
743 |
count); |
744 |
return 0; |
745 |
} |
746 |
} |
747 |
|
748 |
buf = qemu_io_alloc(bs, count, 0xab);
|
749 |
|
750 |
gettimeofday(&t1, NULL);
|
751 |
if (pflag) {
|
752 |
cnt = do_pread(bs, buf, offset, count, &total); |
753 |
} else if (bflag) { |
754 |
cnt = do_load_vmstate(bs, buf, offset, count, &total); |
755 |
} else {
|
756 |
cnt = do_read(bs, buf, offset, count, &total); |
757 |
} |
758 |
gettimeofday(&t2, NULL);
|
759 |
|
760 |
if (cnt < 0) { |
761 |
printf("read failed: %s\n", strerror(-cnt));
|
762 |
goto out;
|
763 |
} |
764 |
|
765 |
if (Pflag) {
|
766 |
void *cmp_buf = g_malloc(pattern_count);
|
767 |
memset(cmp_buf, pattern, pattern_count); |
768 |
if (memcmp(buf + pattern_offset, cmp_buf, pattern_count)) {
|
769 |
printf("Pattern verification failed at offset %"
|
770 |
PRId64 ", %d bytes\n",
|
771 |
offset + pattern_offset, pattern_count); |
772 |
} |
773 |
g_free(cmp_buf); |
774 |
} |
775 |
|
776 |
if (qflag) {
|
777 |
goto out;
|
778 |
} |
779 |
|
780 |
if (vflag) {
|
781 |
dump_buffer(buf, offset, count); |
782 |
} |
783 |
|
784 |
/* Finally, report back -- -C gives a parsable format */
|
785 |
t2 = tsub(t2, t1); |
786 |
print_report("read", &t2, offset, count, total, cnt, Cflag);
|
787 |
|
788 |
out:
|
789 |
qemu_io_free(buf); |
790 |
|
791 |
return 0; |
792 |
} |
793 |
|
794 |
static void readv_help(void) |
795 |
{ |
796 |
printf( |
797 |
"\n"
|
798 |
" reads a range of bytes from the given offset into multiple buffers\n"
|
799 |
"\n"
|
800 |
" Example:\n"
|
801 |
" 'readv -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n"
|
802 |
"\n"
|
803 |
" Reads a segment of the currently open file, optionally dumping it to the\n"
|
804 |
" standard output stream (with -v option) for subsequent inspection.\n"
|
805 |
" Uses multiple iovec buffers if more than one byte range is specified.\n"
|
806 |
" -C, -- report statistics in a machine parsable format\n"
|
807 |
" -P, -- use a pattern to verify read data\n"
|
808 |
" -v, -- dump buffer to standard output\n"
|
809 |
" -q, -- quiet mode, do not show I/O statistics\n"
|
810 |
"\n");
|
811 |
} |
812 |
|
813 |
static int readv_f(BlockDriverState *bs, int argc, char **argv); |
814 |
|
815 |
static const cmdinfo_t readv_cmd = { |
816 |
.name = "readv",
|
817 |
.cfunc = readv_f, |
818 |
.argmin = 2,
|
819 |
.argmax = -1,
|
820 |
.args = "[-Cqv] [-P pattern ] off len [len..]",
|
821 |
.oneline = "reads a number of bytes at a specified offset",
|
822 |
.help = readv_help, |
823 |
}; |
824 |
|
825 |
static int readv_f(BlockDriverState *bs, int argc, char **argv) |
826 |
{ |
827 |
struct timeval t1, t2;
|
828 |
int Cflag = 0, qflag = 0, vflag = 0; |
829 |
int c, cnt;
|
830 |
char *buf;
|
831 |
int64_t offset; |
832 |
/* Some compilers get confused and warn if this is not initialized. */
|
833 |
int total = 0; |
834 |
int nr_iov;
|
835 |
QEMUIOVector qiov; |
836 |
int pattern = 0; |
837 |
int Pflag = 0; |
838 |
|
839 |
while ((c = getopt(argc, argv, "CP:qv")) != EOF) { |
840 |
switch (c) {
|
841 |
case 'C': |
842 |
Cflag = 1;
|
843 |
break;
|
844 |
case 'P': |
845 |
Pflag = 1;
|
846 |
pattern = parse_pattern(optarg); |
847 |
if (pattern < 0) { |
848 |
return 0; |
849 |
} |
850 |
break;
|
851 |
case 'q': |
852 |
qflag = 1;
|
853 |
break;
|
854 |
case 'v': |
855 |
vflag = 1;
|
856 |
break;
|
857 |
default:
|
858 |
return qemuio_command_usage(&readv_cmd);
|
859 |
} |
860 |
} |
861 |
|
862 |
if (optind > argc - 2) { |
863 |
return qemuio_command_usage(&readv_cmd);
|
864 |
} |
865 |
|
866 |
|
867 |
offset = cvtnum(argv[optind]); |
868 |
if (offset < 0) { |
869 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
870 |
return 0; |
871 |
} |
872 |
optind++; |
873 |
|
874 |
if (offset & 0x1ff) { |
875 |
printf("offset %" PRId64 " is not sector aligned\n", |
876 |
offset); |
877 |
return 0; |
878 |
} |
879 |
|
880 |
nr_iov = argc - optind; |
881 |
buf = create_iovec(bs, &qiov, &argv[optind], nr_iov, 0xab);
|
882 |
if (buf == NULL) { |
883 |
return 0; |
884 |
} |
885 |
|
886 |
gettimeofday(&t1, NULL);
|
887 |
cnt = do_aio_readv(bs, &qiov, offset, &total); |
888 |
gettimeofday(&t2, NULL);
|
889 |
|
890 |
if (cnt < 0) { |
891 |
printf("readv failed: %s\n", strerror(-cnt));
|
892 |
goto out;
|
893 |
} |
894 |
|
895 |
if (Pflag) {
|
896 |
void *cmp_buf = g_malloc(qiov.size);
|
897 |
memset(cmp_buf, pattern, qiov.size); |
898 |
if (memcmp(buf, cmp_buf, qiov.size)) {
|
899 |
printf("Pattern verification failed at offset %"
|
900 |
PRId64 ", %zd bytes\n", offset, qiov.size);
|
901 |
} |
902 |
g_free(cmp_buf); |
903 |
} |
904 |
|
905 |
if (qflag) {
|
906 |
goto out;
|
907 |
} |
908 |
|
909 |
if (vflag) {
|
910 |
dump_buffer(buf, offset, qiov.size); |
911 |
} |
912 |
|
913 |
/* Finally, report back -- -C gives a parsable format */
|
914 |
t2 = tsub(t2, t1); |
915 |
print_report("read", &t2, offset, qiov.size, total, cnt, Cflag);
|
916 |
|
917 |
out:
|
918 |
qemu_iovec_destroy(&qiov); |
919 |
qemu_io_free(buf); |
920 |
return 0; |
921 |
} |
922 |
|
923 |
static void write_help(void) |
924 |
{ |
925 |
printf( |
926 |
"\n"
|
927 |
" writes a range of bytes from the given offset\n"
|
928 |
"\n"
|
929 |
" Example:\n"
|
930 |
" 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n"
|
931 |
"\n"
|
932 |
" Writes into a segment of the currently open file, using a buffer\n"
|
933 |
" filled with a set pattern (0xcdcdcdcd).\n"
|
934 |
" -b, -- write to the VM state rather than the virtual disk\n"
|
935 |
" -c, -- write compressed data with bdrv_write_compressed\n"
|
936 |
" -p, -- use bdrv_pwrite to write the file\n"
|
937 |
" -P, -- use different pattern to fill file\n"
|
938 |
" -C, -- report statistics in a machine parsable format\n"
|
939 |
" -q, -- quiet mode, do not show I/O statistics\n"
|
940 |
" -z, -- write zeroes using bdrv_co_write_zeroes\n"
|
941 |
"\n");
|
942 |
} |
943 |
|
944 |
static int write_f(BlockDriverState *bs, int argc, char **argv); |
945 |
|
946 |
static const cmdinfo_t write_cmd = { |
947 |
.name = "write",
|
948 |
.altname = "w",
|
949 |
.cfunc = write_f, |
950 |
.argmin = 2,
|
951 |
.argmax = -1,
|
952 |
.args = "[-bcCpqz] [-P pattern ] off len",
|
953 |
.oneline = "writes a number of bytes at a specified offset",
|
954 |
.help = write_help, |
955 |
}; |
956 |
|
957 |
static int write_f(BlockDriverState *bs, int argc, char **argv) |
958 |
{ |
959 |
struct timeval t1, t2;
|
960 |
int Cflag = 0, pflag = 0, qflag = 0, bflag = 0, Pflag = 0, zflag = 0; |
961 |
int cflag = 0; |
962 |
int c, cnt;
|
963 |
char *buf = NULL; |
964 |
int64_t offset; |
965 |
int count;
|
966 |
/* Some compilers get confused and warn if this is not initialized. */
|
967 |
int total = 0; |
968 |
int pattern = 0xcd; |
969 |
|
970 |
while ((c = getopt(argc, argv, "bcCpP:qz")) != EOF) { |
971 |
switch (c) {
|
972 |
case 'b': |
973 |
bflag = 1;
|
974 |
break;
|
975 |
case 'c': |
976 |
cflag = 1;
|
977 |
break;
|
978 |
case 'C': |
979 |
Cflag = 1;
|
980 |
break;
|
981 |
case 'p': |
982 |
pflag = 1;
|
983 |
break;
|
984 |
case 'P': |
985 |
Pflag = 1;
|
986 |
pattern = parse_pattern(optarg); |
987 |
if (pattern < 0) { |
988 |
return 0; |
989 |
} |
990 |
break;
|
991 |
case 'q': |
992 |
qflag = 1;
|
993 |
break;
|
994 |
case 'z': |
995 |
zflag = 1;
|
996 |
break;
|
997 |
default:
|
998 |
return qemuio_command_usage(&write_cmd);
|
999 |
} |
1000 |
} |
1001 |
|
1002 |
if (optind != argc - 2) { |
1003 |
return qemuio_command_usage(&write_cmd);
|
1004 |
} |
1005 |
|
1006 |
if (bflag + pflag + zflag > 1) { |
1007 |
printf("-b, -p, or -z cannot be specified at the same time\n");
|
1008 |
return 0; |
1009 |
} |
1010 |
|
1011 |
if (zflag && Pflag) {
|
1012 |
printf("-z and -P cannot be specified at the same time\n");
|
1013 |
return 0; |
1014 |
} |
1015 |
|
1016 |
offset = cvtnum(argv[optind]); |
1017 |
if (offset < 0) { |
1018 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
1019 |
return 0; |
1020 |
} |
1021 |
|
1022 |
optind++; |
1023 |
count = cvtnum(argv[optind]); |
1024 |
if (count < 0) { |
1025 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
1026 |
return 0; |
1027 |
} |
1028 |
|
1029 |
if (!pflag) {
|
1030 |
if (offset & 0x1ff) { |
1031 |
printf("offset %" PRId64 " is not sector aligned\n", |
1032 |
offset); |
1033 |
return 0; |
1034 |
} |
1035 |
|
1036 |
if (count & 0x1ff) { |
1037 |
printf("count %d is not sector aligned\n",
|
1038 |
count); |
1039 |
return 0; |
1040 |
} |
1041 |
} |
1042 |
|
1043 |
if (!zflag) {
|
1044 |
buf = qemu_io_alloc(bs, count, pattern); |
1045 |
} |
1046 |
|
1047 |
gettimeofday(&t1, NULL);
|
1048 |
if (pflag) {
|
1049 |
cnt = do_pwrite(bs, buf, offset, count, &total); |
1050 |
} else if (bflag) { |
1051 |
cnt = do_save_vmstate(bs, buf, offset, count, &total); |
1052 |
} else if (zflag) { |
1053 |
cnt = do_co_write_zeroes(bs, offset, count, &total); |
1054 |
} else if (cflag) { |
1055 |
cnt = do_write_compressed(bs, buf, offset, count, &total); |
1056 |
} else {
|
1057 |
cnt = do_write(bs, buf, offset, count, &total); |
1058 |
} |
1059 |
gettimeofday(&t2, NULL);
|
1060 |
|
1061 |
if (cnt < 0) { |
1062 |
printf("write failed: %s\n", strerror(-cnt));
|
1063 |
goto out;
|
1064 |
} |
1065 |
|
1066 |
if (qflag) {
|
1067 |
goto out;
|
1068 |
} |
1069 |
|
1070 |
/* Finally, report back -- -C gives a parsable format */
|
1071 |
t2 = tsub(t2, t1); |
1072 |
print_report("wrote", &t2, offset, count, total, cnt, Cflag);
|
1073 |
|
1074 |
out:
|
1075 |
if (!zflag) {
|
1076 |
qemu_io_free(buf); |
1077 |
} |
1078 |
|
1079 |
return 0; |
1080 |
} |
1081 |
|
1082 |
static void |
1083 |
writev_help(void)
|
1084 |
{ |
1085 |
printf( |
1086 |
"\n"
|
1087 |
" writes a range of bytes from the given offset source from multiple buffers\n"
|
1088 |
"\n"
|
1089 |
" Example:\n"
|
1090 |
" 'write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
|
1091 |
"\n"
|
1092 |
" Writes into a segment of the currently open file, using a buffer\n"
|
1093 |
" filled with a set pattern (0xcdcdcdcd).\n"
|
1094 |
" -P, -- use different pattern to fill file\n"
|
1095 |
" -C, -- report statistics in a machine parsable format\n"
|
1096 |
" -q, -- quiet mode, do not show I/O statistics\n"
|
1097 |
"\n");
|
1098 |
} |
1099 |
|
1100 |
static int writev_f(BlockDriverState *bs, int argc, char **argv); |
1101 |
|
1102 |
static const cmdinfo_t writev_cmd = { |
1103 |
.name = "writev",
|
1104 |
.cfunc = writev_f, |
1105 |
.argmin = 2,
|
1106 |
.argmax = -1,
|
1107 |
.args = "[-Cq] [-P pattern ] off len [len..]",
|
1108 |
.oneline = "writes a number of bytes at a specified offset",
|
1109 |
.help = writev_help, |
1110 |
}; |
1111 |
|
1112 |
static int writev_f(BlockDriverState *bs, int argc, char **argv) |
1113 |
{ |
1114 |
struct timeval t1, t2;
|
1115 |
int Cflag = 0, qflag = 0; |
1116 |
int c, cnt;
|
1117 |
char *buf;
|
1118 |
int64_t offset; |
1119 |
/* Some compilers get confused and warn if this is not initialized. */
|
1120 |
int total = 0; |
1121 |
int nr_iov;
|
1122 |
int pattern = 0xcd; |
1123 |
QEMUIOVector qiov; |
1124 |
|
1125 |
while ((c = getopt(argc, argv, "CqP:")) != EOF) { |
1126 |
switch (c) {
|
1127 |
case 'C': |
1128 |
Cflag = 1;
|
1129 |
break;
|
1130 |
case 'q': |
1131 |
qflag = 1;
|
1132 |
break;
|
1133 |
case 'P': |
1134 |
pattern = parse_pattern(optarg); |
1135 |
if (pattern < 0) { |
1136 |
return 0; |
1137 |
} |
1138 |
break;
|
1139 |
default:
|
1140 |
return qemuio_command_usage(&writev_cmd);
|
1141 |
} |
1142 |
} |
1143 |
|
1144 |
if (optind > argc - 2) { |
1145 |
return qemuio_command_usage(&writev_cmd);
|
1146 |
} |
1147 |
|
1148 |
offset = cvtnum(argv[optind]); |
1149 |
if (offset < 0) { |
1150 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
1151 |
return 0; |
1152 |
} |
1153 |
optind++; |
1154 |
|
1155 |
if (offset & 0x1ff) { |
1156 |
printf("offset %" PRId64 " is not sector aligned\n", |
1157 |
offset); |
1158 |
return 0; |
1159 |
} |
1160 |
|
1161 |
nr_iov = argc - optind; |
1162 |
buf = create_iovec(bs, &qiov, &argv[optind], nr_iov, pattern); |
1163 |
if (buf == NULL) { |
1164 |
return 0; |
1165 |
} |
1166 |
|
1167 |
gettimeofday(&t1, NULL);
|
1168 |
cnt = do_aio_writev(bs, &qiov, offset, &total); |
1169 |
gettimeofday(&t2, NULL);
|
1170 |
|
1171 |
if (cnt < 0) { |
1172 |
printf("writev failed: %s\n", strerror(-cnt));
|
1173 |
goto out;
|
1174 |
} |
1175 |
|
1176 |
if (qflag) {
|
1177 |
goto out;
|
1178 |
} |
1179 |
|
1180 |
/* Finally, report back -- -C gives a parsable format */
|
1181 |
t2 = tsub(t2, t1); |
1182 |
print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag);
|
1183 |
out:
|
1184 |
qemu_iovec_destroy(&qiov); |
1185 |
qemu_io_free(buf); |
1186 |
return 0; |
1187 |
} |
1188 |
|
1189 |
static void multiwrite_help(void) |
1190 |
{ |
1191 |
printf( |
1192 |
"\n"
|
1193 |
" writes a range of bytes from the given offset source from multiple buffers,\n"
|
1194 |
" in a batch of requests that may be merged by qemu\n"
|
1195 |
"\n"
|
1196 |
" Example:\n"
|
1197 |
" 'multiwrite 512 1k 1k ; 4k 1k'\n"
|
1198 |
" writes 2 kB at 512 bytes and 1 kB at 4 kB into the open file\n"
|
1199 |
"\n"
|
1200 |
" Writes into a segment of the currently open file, using a buffer\n"
|
1201 |
" filled with a set pattern (0xcdcdcdcd). The pattern byte is increased\n"
|
1202 |
" by one for each request contained in the multiwrite command.\n"
|
1203 |
" -P, -- use different pattern to fill file\n"
|
1204 |
" -C, -- report statistics in a machine parsable format\n"
|
1205 |
" -q, -- quiet mode, do not show I/O statistics\n"
|
1206 |
"\n");
|
1207 |
} |
1208 |
|
1209 |
static int multiwrite_f(BlockDriverState *bs, int argc, char **argv); |
1210 |
|
1211 |
static const cmdinfo_t multiwrite_cmd = { |
1212 |
.name = "multiwrite",
|
1213 |
.cfunc = multiwrite_f, |
1214 |
.argmin = 2,
|
1215 |
.argmax = -1,
|
1216 |
.args = "[-Cq] [-P pattern ] off len [len..] [; off len [len..]..]",
|
1217 |
.oneline = "issues multiple write requests at once",
|
1218 |
.help = multiwrite_help, |
1219 |
}; |
1220 |
|
1221 |
static int multiwrite_f(BlockDriverState *bs, int argc, char **argv) |
1222 |
{ |
1223 |
struct timeval t1, t2;
|
1224 |
int Cflag = 0, qflag = 0; |
1225 |
int c, cnt;
|
1226 |
char **buf;
|
1227 |
int64_t offset, first_offset = 0;
|
1228 |
/* Some compilers get confused and warn if this is not initialized. */
|
1229 |
int total = 0; |
1230 |
int nr_iov;
|
1231 |
int nr_reqs;
|
1232 |
int pattern = 0xcd; |
1233 |
QEMUIOVector *qiovs; |
1234 |
int i;
|
1235 |
BlockRequest *reqs; |
1236 |
|
1237 |
while ((c = getopt(argc, argv, "CqP:")) != EOF) { |
1238 |
switch (c) {
|
1239 |
case 'C': |
1240 |
Cflag = 1;
|
1241 |
break;
|
1242 |
case 'q': |
1243 |
qflag = 1;
|
1244 |
break;
|
1245 |
case 'P': |
1246 |
pattern = parse_pattern(optarg); |
1247 |
if (pattern < 0) { |
1248 |
return 0; |
1249 |
} |
1250 |
break;
|
1251 |
default:
|
1252 |
return qemuio_command_usage(&writev_cmd);
|
1253 |
} |
1254 |
} |
1255 |
|
1256 |
if (optind > argc - 2) { |
1257 |
return qemuio_command_usage(&writev_cmd);
|
1258 |
} |
1259 |
|
1260 |
nr_reqs = 1;
|
1261 |
for (i = optind; i < argc; i++) {
|
1262 |
if (!strcmp(argv[i], ";")) { |
1263 |
nr_reqs++; |
1264 |
} |
1265 |
} |
1266 |
|
1267 |
reqs = g_malloc0(nr_reqs * sizeof(*reqs));
|
1268 |
buf = g_malloc0(nr_reqs * sizeof(*buf));
|
1269 |
qiovs = g_malloc(nr_reqs * sizeof(*qiovs));
|
1270 |
|
1271 |
for (i = 0; i < nr_reqs && optind < argc; i++) { |
1272 |
int j;
|
1273 |
|
1274 |
/* Read the offset of the request */
|
1275 |
offset = cvtnum(argv[optind]); |
1276 |
if (offset < 0) { |
1277 |
printf("non-numeric offset argument -- %s\n", argv[optind]);
|
1278 |
goto out;
|
1279 |
} |
1280 |
optind++; |
1281 |
|
1282 |
if (offset & 0x1ff) { |
1283 |
printf("offset %lld is not sector aligned\n",
|
1284 |
(long long)offset); |
1285 |
goto out;
|
1286 |
} |
1287 |
|
1288 |
if (i == 0) { |
1289 |
first_offset = offset; |
1290 |
} |
1291 |
|
1292 |
/* Read lengths for qiov entries */
|
1293 |
for (j = optind; j < argc; j++) {
|
1294 |
if (!strcmp(argv[j], ";")) { |
1295 |
break;
|
1296 |
} |
1297 |
} |
1298 |
|
1299 |
nr_iov = j - optind; |
1300 |
|
1301 |
/* Build request */
|
1302 |
buf[i] = create_iovec(bs, &qiovs[i], &argv[optind], nr_iov, pattern); |
1303 |
if (buf[i] == NULL) { |
1304 |
goto out;
|
1305 |
} |
1306 |
|
1307 |
reqs[i].qiov = &qiovs[i]; |
1308 |
reqs[i].sector = offset >> 9;
|
1309 |
reqs[i].nb_sectors = reqs[i].qiov->size >> 9;
|
1310 |
|
1311 |
optind = j + 1;
|
1312 |
|
1313 |
pattern++; |
1314 |
} |
1315 |
|
1316 |
/* If there were empty requests at the end, ignore them */
|
1317 |
nr_reqs = i; |
1318 |
|
1319 |
gettimeofday(&t1, NULL);
|
1320 |
cnt = do_aio_multiwrite(bs, reqs, nr_reqs, &total); |
1321 |
gettimeofday(&t2, NULL);
|
1322 |
|
1323 |
if (cnt < 0) { |
1324 |
printf("aio_multiwrite failed: %s\n", strerror(-cnt));
|
1325 |
goto out;
|
1326 |
} |
1327 |
|
1328 |
if (qflag) {
|
1329 |
goto out;
|
1330 |
} |
1331 |
|
1332 |
/* Finally, report back -- -C gives a parsable format */
|
1333 |
t2 = tsub(t2, t1); |
1334 |
print_report("wrote", &t2, first_offset, total, total, cnt, Cflag);
|
1335 |
out:
|
1336 |
for (i = 0; i < nr_reqs; i++) { |
1337 |
qemu_io_free(buf[i]); |
1338 |
if (reqs[i].qiov != NULL) { |
1339 |
qemu_iovec_destroy(&qiovs[i]); |
1340 |
} |
1341 |
} |
1342 |
g_free(buf); |
1343 |
g_free(reqs); |
1344 |
g_free(qiovs); |
1345 |
return 0; |
1346 |
} |
1347 |
|
1348 |
struct aio_ctx {
|
1349 |
QEMUIOVector qiov; |
1350 |
int64_t offset; |
1351 |
char *buf;
|
1352 |
int qflag;
|
1353 |
int vflag;
|
1354 |
int Cflag;
|
1355 |
int Pflag;
|
1356 |
int pattern;
|
1357 |
struct timeval t1;
|
1358 |
}; |
1359 |
|
1360 |
static void aio_write_done(void *opaque, int ret) |
1361 |
{ |
1362 |
struct aio_ctx *ctx = opaque;
|
1363 |
struct timeval t2;
|
1364 |
|
1365 |
gettimeofday(&t2, NULL);
|
1366 |
|
1367 |
|
1368 |
if (ret < 0) { |
1369 |
printf("aio_write failed: %s\n", strerror(-ret));
|
1370 |
goto out;
|
1371 |
} |
1372 |
|
1373 |
if (ctx->qflag) {
|
1374 |
goto out;
|
1375 |
} |
1376 |
|
1377 |
/* Finally, report back -- -C gives a parsable format */
|
1378 |
t2 = tsub(t2, ctx->t1); |
1379 |
print_report("wrote", &t2, ctx->offset, ctx->qiov.size,
|
1380 |
ctx->qiov.size, 1, ctx->Cflag);
|
1381 |
out:
|
1382 |
qemu_io_free(ctx->buf); |
1383 |
qemu_iovec_destroy(&ctx->qiov); |
1384 |
g_free(ctx); |
1385 |
} |
1386 |
|
1387 |
static void aio_read_done(void *opaque, int ret) |
1388 |
{ |
1389 |
struct aio_ctx *ctx = opaque;
|
1390 |
struct timeval t2;
|
1391 |
|
1392 |
gettimeofday(&t2, NULL);
|
1393 |
|
1394 |
if (ret < 0) { |
1395 |
printf("readv failed: %s\n", strerror(-ret));
|
1396 |
goto out;
|
1397 |
} |
1398 |
|
1399 |
if (ctx->Pflag) {
|
1400 |
void *cmp_buf = g_malloc(ctx->qiov.size);
|
1401 |
|
1402 |
memset(cmp_buf, ctx->pattern, ctx->qiov.size); |
1403 |
if (memcmp(ctx->buf, cmp_buf, ctx->qiov.size)) {
|
1404 |
printf("Pattern verification failed at offset %"
|
1405 |
PRId64 ", %zd bytes\n", ctx->offset, ctx->qiov.size);
|
1406 |
} |
1407 |
g_free(cmp_buf); |
1408 |
} |
1409 |
|
1410 |
if (ctx->qflag) {
|
1411 |
goto out;
|
1412 |
} |
1413 |
|
1414 |
if (ctx->vflag) {
|
1415 |
dump_buffer(ctx->buf, ctx->offset, ctx->qiov.size); |
1416 |
} |
1417 |
|
1418 |
/* Finally, report back -- -C gives a parsable format */
|
1419 |
t2 = tsub(t2, ctx->t1); |
1420 |
print_report("read", &t2, ctx->offset, ctx->qiov.size,
|
1421 |
ctx->qiov.size, 1, ctx->Cflag);
|
1422 |
out:
|
1423 |
qemu_io_free(ctx->buf); |
1424 |
qemu_iovec_destroy(&ctx->qiov); |
1425 |
g_free(ctx); |
1426 |
} |
1427 |
|
1428 |
static void aio_read_help(void) |
1429 |
{ |
1430 |
printf( |
1431 |
"\n"
|
1432 |
" asynchronously reads a range of bytes from the given offset\n"
|
1433 |
"\n"
|
1434 |
" Example:\n"
|
1435 |
" 'aio_read -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n"
|
1436 |
"\n"
|
1437 |
" Reads a segment of the currently open file, optionally dumping it to the\n"
|
1438 |
" standard output stream (with -v option) for subsequent inspection.\n"
|
1439 |
" The read is performed asynchronously and the aio_flush command must be\n"
|
1440 |
" used to ensure all outstanding aio requests have been completed.\n"
|
1441 |
" -C, -- report statistics in a machine parsable format\n"
|
1442 |
" -P, -- use a pattern to verify read data\n"
|
1443 |
" -v, -- dump buffer to standard output\n"
|
1444 |
" -q, -- quiet mode, do not show I/O statistics\n"
|
1445 |
"\n");
|
1446 |
} |
1447 |
|
1448 |
static int aio_read_f(BlockDriverState *bs, int argc, char **argv); |
1449 |
|
1450 |
static const cmdinfo_t aio_read_cmd = { |
1451 |
.name = "aio_read",
|
1452 |
.cfunc = aio_read_f, |
1453 |
.argmin = 2,
|
1454 |
.argmax = -1,
|
1455 |
.args = "[-Cqv] [-P pattern ] off len [len..]",
|
1456 |
.oneline = "asynchronously reads a number of bytes",
|
1457 |
.help = aio_read_help, |
1458 |
}; |
1459 |
|
1460 |
static int aio_read_f(BlockDriverState *bs, int argc, char **argv) |
1461 |
{ |
1462 |
int nr_iov, c;
|
1463 |
struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); |
1464 |
|
1465 |
while ((c = getopt(argc, argv, "CP:qv")) != EOF) { |
1466 |
switch (c) {
|
1467 |
case 'C': |
1468 |
ctx->Cflag = 1;
|
1469 |
break;
|
1470 |
case 'P': |
1471 |
ctx->Pflag = 1;
|
1472 |
ctx->pattern = parse_pattern(optarg); |
1473 |
if (ctx->pattern < 0) { |
1474 |
g_free(ctx); |
1475 |
return 0; |
1476 |
} |
1477 |
break;
|
1478 |
case 'q': |
1479 |
ctx->qflag = 1;
|
1480 |
break;
|
1481 |
case 'v': |
1482 |
ctx->vflag = 1;
|
1483 |
break;
|
1484 |
default:
|
1485 |
g_free(ctx); |
1486 |
return qemuio_command_usage(&aio_read_cmd);
|
1487 |
} |
1488 |
} |
1489 |
|
1490 |
if (optind > argc - 2) { |
1491 |
g_free(ctx); |
1492 |
return qemuio_command_usage(&aio_read_cmd);
|
1493 |
} |
1494 |
|
1495 |
ctx->offset = cvtnum(argv[optind]); |
1496 |
if (ctx->offset < 0) { |
1497 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
1498 |
g_free(ctx); |
1499 |
return 0; |
1500 |
} |
1501 |
optind++; |
1502 |
|
1503 |
if (ctx->offset & 0x1ff) { |
1504 |
printf("offset %" PRId64 " is not sector aligned\n", |
1505 |
ctx->offset); |
1506 |
g_free(ctx); |
1507 |
return 0; |
1508 |
} |
1509 |
|
1510 |
nr_iov = argc - optind; |
1511 |
ctx->buf = create_iovec(bs, &ctx->qiov, &argv[optind], nr_iov, 0xab);
|
1512 |
if (ctx->buf == NULL) { |
1513 |
g_free(ctx); |
1514 |
return 0; |
1515 |
} |
1516 |
|
1517 |
gettimeofday(&ctx->t1, NULL);
|
1518 |
bdrv_aio_readv(bs, ctx->offset >> 9, &ctx->qiov,
|
1519 |
ctx->qiov.size >> 9, aio_read_done, ctx);
|
1520 |
return 0; |
1521 |
} |
1522 |
|
1523 |
static void aio_write_help(void) |
1524 |
{ |
1525 |
printf( |
1526 |
"\n"
|
1527 |
" asynchronously writes a range of bytes from the given offset source\n"
|
1528 |
" from multiple buffers\n"
|
1529 |
"\n"
|
1530 |
" Example:\n"
|
1531 |
" 'aio_write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
|
1532 |
"\n"
|
1533 |
" Writes into a segment of the currently open file, using a buffer\n"
|
1534 |
" filled with a set pattern (0xcdcdcdcd).\n"
|
1535 |
" The write is performed asynchronously and the aio_flush command must be\n"
|
1536 |
" used to ensure all outstanding aio requests have been completed.\n"
|
1537 |
" -P, -- use different pattern to fill file\n"
|
1538 |
" -C, -- report statistics in a machine parsable format\n"
|
1539 |
" -q, -- quiet mode, do not show I/O statistics\n"
|
1540 |
"\n");
|
1541 |
} |
1542 |
|
1543 |
static int aio_write_f(BlockDriverState *bs, int argc, char **argv); |
1544 |
|
1545 |
static const cmdinfo_t aio_write_cmd = { |
1546 |
.name = "aio_write",
|
1547 |
.cfunc = aio_write_f, |
1548 |
.argmin = 2,
|
1549 |
.argmax = -1,
|
1550 |
.args = "[-Cq] [-P pattern ] off len [len..]",
|
1551 |
.oneline = "asynchronously writes a number of bytes",
|
1552 |
.help = aio_write_help, |
1553 |
}; |
1554 |
|
1555 |
static int aio_write_f(BlockDriverState *bs, int argc, char **argv) |
1556 |
{ |
1557 |
int nr_iov, c;
|
1558 |
int pattern = 0xcd; |
1559 |
struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); |
1560 |
|
1561 |
while ((c = getopt(argc, argv, "CqP:")) != EOF) { |
1562 |
switch (c) {
|
1563 |
case 'C': |
1564 |
ctx->Cflag = 1;
|
1565 |
break;
|
1566 |
case 'q': |
1567 |
ctx->qflag = 1;
|
1568 |
break;
|
1569 |
case 'P': |
1570 |
pattern = parse_pattern(optarg); |
1571 |
if (pattern < 0) { |
1572 |
g_free(ctx); |
1573 |
return 0; |
1574 |
} |
1575 |
break;
|
1576 |
default:
|
1577 |
g_free(ctx); |
1578 |
return qemuio_command_usage(&aio_write_cmd);
|
1579 |
} |
1580 |
} |
1581 |
|
1582 |
if (optind > argc - 2) { |
1583 |
g_free(ctx); |
1584 |
return qemuio_command_usage(&aio_write_cmd);
|
1585 |
} |
1586 |
|
1587 |
ctx->offset = cvtnum(argv[optind]); |
1588 |
if (ctx->offset < 0) { |
1589 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
1590 |
g_free(ctx); |
1591 |
return 0; |
1592 |
} |
1593 |
optind++; |
1594 |
|
1595 |
if (ctx->offset & 0x1ff) { |
1596 |
printf("offset %" PRId64 " is not sector aligned\n", |
1597 |
ctx->offset); |
1598 |
g_free(ctx); |
1599 |
return 0; |
1600 |
} |
1601 |
|
1602 |
nr_iov = argc - optind; |
1603 |
ctx->buf = create_iovec(bs, &ctx->qiov, &argv[optind], nr_iov, pattern); |
1604 |
if (ctx->buf == NULL) { |
1605 |
g_free(ctx); |
1606 |
return 0; |
1607 |
} |
1608 |
|
1609 |
gettimeofday(&ctx->t1, NULL);
|
1610 |
bdrv_aio_writev(bs, ctx->offset >> 9, &ctx->qiov,
|
1611 |
ctx->qiov.size >> 9, aio_write_done, ctx);
|
1612 |
return 0; |
1613 |
} |
1614 |
|
1615 |
static int aio_flush_f(BlockDriverState *bs, int argc, char **argv) |
1616 |
{ |
1617 |
bdrv_drain_all(); |
1618 |
return 0; |
1619 |
} |
1620 |
|
1621 |
static const cmdinfo_t aio_flush_cmd = { |
1622 |
.name = "aio_flush",
|
1623 |
.cfunc = aio_flush_f, |
1624 |
.oneline = "completes all outstanding aio requests"
|
1625 |
}; |
1626 |
|
1627 |
static int flush_f(BlockDriverState *bs, int argc, char **argv) |
1628 |
{ |
1629 |
bdrv_flush(bs); |
1630 |
return 0; |
1631 |
} |
1632 |
|
1633 |
static const cmdinfo_t flush_cmd = { |
1634 |
.name = "flush",
|
1635 |
.altname = "f",
|
1636 |
.cfunc = flush_f, |
1637 |
.oneline = "flush all in-core file state to disk",
|
1638 |
}; |
1639 |
|
1640 |
static int truncate_f(BlockDriverState *bs, int argc, char **argv) |
1641 |
{ |
1642 |
int64_t offset; |
1643 |
int ret;
|
1644 |
|
1645 |
offset = cvtnum(argv[1]);
|
1646 |
if (offset < 0) { |
1647 |
printf("non-numeric truncate argument -- %s\n", argv[1]); |
1648 |
return 0; |
1649 |
} |
1650 |
|
1651 |
ret = bdrv_truncate(bs, offset); |
1652 |
if (ret < 0) { |
1653 |
printf("truncate: %s\n", strerror(-ret));
|
1654 |
return 0; |
1655 |
} |
1656 |
|
1657 |
return 0; |
1658 |
} |
1659 |
|
1660 |
static const cmdinfo_t truncate_cmd = { |
1661 |
.name = "truncate",
|
1662 |
.altname = "t",
|
1663 |
.cfunc = truncate_f, |
1664 |
.argmin = 1,
|
1665 |
.argmax = 1,
|
1666 |
.args = "off",
|
1667 |
.oneline = "truncates the current file at the given offset",
|
1668 |
}; |
1669 |
|
1670 |
static int length_f(BlockDriverState *bs, int argc, char **argv) |
1671 |
{ |
1672 |
int64_t size; |
1673 |
char s1[64]; |
1674 |
|
1675 |
size = bdrv_getlength(bs); |
1676 |
if (size < 0) { |
1677 |
printf("getlength: %s\n", strerror(-size));
|
1678 |
return 0; |
1679 |
} |
1680 |
|
1681 |
cvtstr(size, s1, sizeof(s1));
|
1682 |
printf("%s\n", s1);
|
1683 |
return 0; |
1684 |
} |
1685 |
|
1686 |
|
1687 |
static const cmdinfo_t length_cmd = { |
1688 |
.name = "length",
|
1689 |
.altname = "l",
|
1690 |
.cfunc = length_f, |
1691 |
.oneline = "gets the length of the current file",
|
1692 |
}; |
1693 |
|
1694 |
|
1695 |
static int info_f(BlockDriverState *bs, int argc, char **argv) |
1696 |
{ |
1697 |
BlockDriverInfo bdi; |
1698 |
ImageInfoSpecific *spec_info; |
1699 |
char s1[64], s2[64]; |
1700 |
int ret;
|
1701 |
|
1702 |
if (bs->drv && bs->drv->format_name) {
|
1703 |
printf("format name: %s\n", bs->drv->format_name);
|
1704 |
} |
1705 |
if (bs->drv && bs->drv->protocol_name) {
|
1706 |
printf("format name: %s\n", bs->drv->protocol_name);
|
1707 |
} |
1708 |
|
1709 |
ret = bdrv_get_info(bs, &bdi); |
1710 |
if (ret) {
|
1711 |
return 0; |
1712 |
} |
1713 |
|
1714 |
cvtstr(bdi.cluster_size, s1, sizeof(s1));
|
1715 |
cvtstr(bdi.vm_state_offset, s2, sizeof(s2));
|
1716 |
|
1717 |
printf("cluster size: %s\n", s1);
|
1718 |
printf("vm state offset: %s\n", s2);
|
1719 |
|
1720 |
spec_info = bdrv_get_specific_info(bs); |
1721 |
if (spec_info) {
|
1722 |
printf("Format specific information:\n");
|
1723 |
bdrv_image_info_specific_dump(fprintf, stdout, spec_info); |
1724 |
qapi_free_ImageInfoSpecific(spec_info); |
1725 |
} |
1726 |
|
1727 |
return 0; |
1728 |
} |
1729 |
|
1730 |
|
1731 |
|
1732 |
static const cmdinfo_t info_cmd = { |
1733 |
.name = "info",
|
1734 |
.altname = "i",
|
1735 |
.cfunc = info_f, |
1736 |
.oneline = "prints information about the current file",
|
1737 |
}; |
1738 |
|
1739 |
static void discard_help(void) |
1740 |
{ |
1741 |
printf( |
1742 |
"\n"
|
1743 |
" discards a range of bytes from the given offset\n"
|
1744 |
"\n"
|
1745 |
" Example:\n"
|
1746 |
" 'discard 512 1k' - discards 1 kilobyte from 512 bytes into the file\n"
|
1747 |
"\n"
|
1748 |
" Discards a segment of the currently open file.\n"
|
1749 |
" -C, -- report statistics in a machine parsable format\n"
|
1750 |
" -q, -- quiet mode, do not show I/O statistics\n"
|
1751 |
"\n");
|
1752 |
} |
1753 |
|
1754 |
static int discard_f(BlockDriverState *bs, int argc, char **argv); |
1755 |
|
1756 |
static const cmdinfo_t discard_cmd = { |
1757 |
.name = "discard",
|
1758 |
.altname = "d",
|
1759 |
.cfunc = discard_f, |
1760 |
.argmin = 2,
|
1761 |
.argmax = -1,
|
1762 |
.args = "[-Cq] off len",
|
1763 |
.oneline = "discards a number of bytes at a specified offset",
|
1764 |
.help = discard_help, |
1765 |
}; |
1766 |
|
1767 |
static int discard_f(BlockDriverState *bs, int argc, char **argv) |
1768 |
{ |
1769 |
struct timeval t1, t2;
|
1770 |
int Cflag = 0, qflag = 0; |
1771 |
int c, ret;
|
1772 |
int64_t offset; |
1773 |
int count;
|
1774 |
|
1775 |
while ((c = getopt(argc, argv, "Cq")) != EOF) { |
1776 |
switch (c) {
|
1777 |
case 'C': |
1778 |
Cflag = 1;
|
1779 |
break;
|
1780 |
case 'q': |
1781 |
qflag = 1;
|
1782 |
break;
|
1783 |
default:
|
1784 |
return qemuio_command_usage(&discard_cmd);
|
1785 |
} |
1786 |
} |
1787 |
|
1788 |
if (optind != argc - 2) { |
1789 |
return qemuio_command_usage(&discard_cmd);
|
1790 |
} |
1791 |
|
1792 |
offset = cvtnum(argv[optind]); |
1793 |
if (offset < 0) { |
1794 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
1795 |
return 0; |
1796 |
} |
1797 |
|
1798 |
optind++; |
1799 |
count = cvtnum(argv[optind]); |
1800 |
if (count < 0) { |
1801 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
1802 |
return 0; |
1803 |
} |
1804 |
|
1805 |
gettimeofday(&t1, NULL);
|
1806 |
ret = bdrv_discard(bs, offset >> BDRV_SECTOR_BITS, |
1807 |
count >> BDRV_SECTOR_BITS); |
1808 |
gettimeofday(&t2, NULL);
|
1809 |
|
1810 |
if (ret < 0) { |
1811 |
printf("discard failed: %s\n", strerror(-ret));
|
1812 |
goto out;
|
1813 |
} |
1814 |
|
1815 |
/* Finally, report back -- -C gives a parsable format */
|
1816 |
if (!qflag) {
|
1817 |
t2 = tsub(t2, t1); |
1818 |
print_report("discard", &t2, offset, count, count, 1, Cflag); |
1819 |
} |
1820 |
|
1821 |
out:
|
1822 |
return 0; |
1823 |
} |
1824 |
|
1825 |
static int alloc_f(BlockDriverState *bs, int argc, char **argv) |
1826 |
{ |
1827 |
int64_t offset, sector_num; |
1828 |
int nb_sectors, remaining;
|
1829 |
char s1[64]; |
1830 |
int num, sum_alloc;
|
1831 |
int ret;
|
1832 |
|
1833 |
offset = cvtnum(argv[1]);
|
1834 |
if (offset < 0) { |
1835 |
printf("non-numeric offset argument -- %s\n", argv[1]); |
1836 |
return 0; |
1837 |
} else if (offset & 0x1ff) { |
1838 |
printf("offset %" PRId64 " is not sector aligned\n", |
1839 |
offset); |
1840 |
return 0; |
1841 |
} |
1842 |
|
1843 |
if (argc == 3) { |
1844 |
nb_sectors = cvtnum(argv[2]);
|
1845 |
if (nb_sectors < 0) { |
1846 |
printf("non-numeric length argument -- %s\n", argv[2]); |
1847 |
return 0; |
1848 |
} |
1849 |
} else {
|
1850 |
nb_sectors = 1;
|
1851 |
} |
1852 |
|
1853 |
remaining = nb_sectors; |
1854 |
sum_alloc = 0;
|
1855 |
sector_num = offset >> 9;
|
1856 |
while (remaining) {
|
1857 |
ret = bdrv_is_allocated(bs, sector_num, remaining, &num); |
1858 |
if (ret < 0) { |
1859 |
printf("is_allocated failed: %s\n", strerror(-ret));
|
1860 |
return 0; |
1861 |
} |
1862 |
sector_num += num; |
1863 |
remaining -= num; |
1864 |
if (ret) {
|
1865 |
sum_alloc += num; |
1866 |
} |
1867 |
if (num == 0) { |
1868 |
nb_sectors -= remaining; |
1869 |
remaining = 0;
|
1870 |
} |
1871 |
} |
1872 |
|
1873 |
cvtstr(offset, s1, sizeof(s1));
|
1874 |
|
1875 |
printf("%d/%d sectors allocated at offset %s\n",
|
1876 |
sum_alloc, nb_sectors, s1); |
1877 |
return 0; |
1878 |
} |
1879 |
|
1880 |
static const cmdinfo_t alloc_cmd = { |
1881 |
.name = "alloc",
|
1882 |
.altname = "a",
|
1883 |
.argmin = 1,
|
1884 |
.argmax = 2,
|
1885 |
.cfunc = alloc_f, |
1886 |
.args = "off [sectors]",
|
1887 |
.oneline = "checks if a sector is present in the file",
|
1888 |
}; |
1889 |
|
1890 |
|
1891 |
static int map_is_allocated(BlockDriverState *bs, int64_t sector_num, |
1892 |
int64_t nb_sectors, int64_t *pnum) |
1893 |
{ |
1894 |
int num, num_checked;
|
1895 |
int ret, firstret;
|
1896 |
|
1897 |
num_checked = MIN(nb_sectors, INT_MAX); |
1898 |
ret = bdrv_is_allocated(bs, sector_num, num_checked, &num); |
1899 |
if (ret < 0) { |
1900 |
return ret;
|
1901 |
} |
1902 |
|
1903 |
firstret = ret; |
1904 |
*pnum = num; |
1905 |
|
1906 |
while (nb_sectors > 0 && ret == firstret) { |
1907 |
sector_num += num; |
1908 |
nb_sectors -= num; |
1909 |
|
1910 |
num_checked = MIN(nb_sectors, INT_MAX); |
1911 |
ret = bdrv_is_allocated(bs, sector_num, num_checked, &num); |
1912 |
if (ret == firstret) {
|
1913 |
*pnum += num; |
1914 |
} else {
|
1915 |
break;
|
1916 |
} |
1917 |
} |
1918 |
|
1919 |
return firstret;
|
1920 |
} |
1921 |
|
1922 |
static int map_f(BlockDriverState *bs, int argc, char **argv) |
1923 |
{ |
1924 |
int64_t offset; |
1925 |
int64_t nb_sectors; |
1926 |
char s1[64]; |
1927 |
int64_t num; |
1928 |
int ret;
|
1929 |
const char *retstr; |
1930 |
|
1931 |
offset = 0;
|
1932 |
nb_sectors = bs->total_sectors; |
1933 |
|
1934 |
do {
|
1935 |
ret = map_is_allocated(bs, offset, nb_sectors, &num); |
1936 |
if (ret < 0) { |
1937 |
error_report("Failed to get allocation status: %s", strerror(-ret));
|
1938 |
return 0; |
1939 |
} |
1940 |
|
1941 |
retstr = ret ? " allocated" : "not allocated"; |
1942 |
cvtstr(offset << 9ULL, s1, sizeof(s1)); |
1943 |
printf("[% 24" PRId64 "] % 8" PRId64 "/% 8" PRId64 " sectors %s " |
1944 |
"at offset %s (%d)\n",
|
1945 |
offset << 9ULL, num, nb_sectors, retstr, s1, ret);
|
1946 |
|
1947 |
offset += num; |
1948 |
nb_sectors -= num; |
1949 |
} while (offset < bs->total_sectors);
|
1950 |
|
1951 |
return 0; |
1952 |
} |
1953 |
|
1954 |
static const cmdinfo_t map_cmd = { |
1955 |
.name = "map",
|
1956 |
.argmin = 0,
|
1957 |
.argmax = 0,
|
1958 |
.cfunc = map_f, |
1959 |
.args = "",
|
1960 |
.oneline = "prints the allocated areas of a file",
|
1961 |
}; |
1962 |
|
1963 |
static int break_f(BlockDriverState *bs, int argc, char **argv) |
1964 |
{ |
1965 |
int ret;
|
1966 |
|
1967 |
ret = bdrv_debug_breakpoint(bs, argv[1], argv[2]); |
1968 |
if (ret < 0) { |
1969 |
printf("Could not set breakpoint: %s\n", strerror(-ret));
|
1970 |
} |
1971 |
|
1972 |
return 0; |
1973 |
} |
1974 |
|
1975 |
static int remove_break_f(BlockDriverState *bs, int argc, char **argv) |
1976 |
{ |
1977 |
int ret;
|
1978 |
|
1979 |
ret = bdrv_debug_remove_breakpoint(bs, argv[1]);
|
1980 |
if (ret < 0) { |
1981 |
printf("Could not remove breakpoint %s: %s\n", argv[1], strerror(-ret)); |
1982 |
} |
1983 |
|
1984 |
return 0; |
1985 |
} |
1986 |
|
1987 |
static const cmdinfo_t break_cmd = { |
1988 |
.name = "break",
|
1989 |
.argmin = 2,
|
1990 |
.argmax = 2,
|
1991 |
.cfunc = break_f, |
1992 |
.args = "event tag",
|
1993 |
.oneline = "sets a breakpoint on event and tags the stopped "
|
1994 |
"request as tag",
|
1995 |
}; |
1996 |
|
1997 |
static const cmdinfo_t remove_break_cmd = { |
1998 |
.name = "remove_break",
|
1999 |
.argmin = 1,
|
2000 |
.argmax = 1,
|
2001 |
.cfunc = remove_break_f, |
2002 |
.args = "tag",
|
2003 |
.oneline = "remove a breakpoint by tag",
|
2004 |
}; |
2005 |
|
2006 |
static int resume_f(BlockDriverState *bs, int argc, char **argv) |
2007 |
{ |
2008 |
int ret;
|
2009 |
|
2010 |
ret = bdrv_debug_resume(bs, argv[1]);
|
2011 |
if (ret < 0) { |
2012 |
printf("Could not resume request: %s\n", strerror(-ret));
|
2013 |
} |
2014 |
|
2015 |
return 0; |
2016 |
} |
2017 |
|
2018 |
static const cmdinfo_t resume_cmd = { |
2019 |
.name = "resume",
|
2020 |
.argmin = 1,
|
2021 |
.argmax = 1,
|
2022 |
.cfunc = resume_f, |
2023 |
.args = "tag",
|
2024 |
.oneline = "resumes the request tagged as tag",
|
2025 |
}; |
2026 |
|
2027 |
static int wait_break_f(BlockDriverState *bs, int argc, char **argv) |
2028 |
{ |
2029 |
while (!bdrv_debug_is_suspended(bs, argv[1])) { |
2030 |
qemu_aio_wait(); |
2031 |
} |
2032 |
|
2033 |
return 0; |
2034 |
} |
2035 |
|
2036 |
static const cmdinfo_t wait_break_cmd = { |
2037 |
.name = "wait_break",
|
2038 |
.argmin = 1,
|
2039 |
.argmax = 1,
|
2040 |
.cfunc = wait_break_f, |
2041 |
.args = "tag",
|
2042 |
.oneline = "waits for the suspension of a request",
|
2043 |
}; |
2044 |
|
2045 |
static int abort_f(BlockDriverState *bs, int argc, char **argv) |
2046 |
{ |
2047 |
abort(); |
2048 |
} |
2049 |
|
2050 |
static const cmdinfo_t abort_cmd = { |
2051 |
.name = "abort",
|
2052 |
.cfunc = abort_f, |
2053 |
.flags = CMD_NOFILE_OK, |
2054 |
.oneline = "simulate a program crash using abort(3)",
|
2055 |
}; |
2056 |
|
2057 |
static void sleep_cb(void *opaque) |
2058 |
{ |
2059 |
bool *expired = opaque;
|
2060 |
*expired = true;
|
2061 |
} |
2062 |
|
2063 |
static int sleep_f(BlockDriverState *bs, int argc, char **argv) |
2064 |
{ |
2065 |
char *endptr;
|
2066 |
long ms;
|
2067 |
struct QEMUTimer *timer;
|
2068 |
bool expired = false; |
2069 |
|
2070 |
ms = strtol(argv[1], &endptr, 0); |
2071 |
if (ms < 0 || *endptr != '\0') { |
2072 |
printf("%s is not a valid number\n", argv[1]); |
2073 |
return 0; |
2074 |
} |
2075 |
|
2076 |
timer = timer_new_ns(QEMU_CLOCK_HOST, sleep_cb, &expired); |
2077 |
timer_mod(timer, qemu_clock_get_ns(QEMU_CLOCK_HOST) + SCALE_MS * ms); |
2078 |
|
2079 |
while (!expired) {
|
2080 |
main_loop_wait(false);
|
2081 |
} |
2082 |
|
2083 |
timer_free(timer); |
2084 |
|
2085 |
return 0; |
2086 |
} |
2087 |
|
2088 |
static const cmdinfo_t sleep_cmd = { |
2089 |
.name = "sleep",
|
2090 |
.argmin = 1,
|
2091 |
.argmax = 1,
|
2092 |
.cfunc = sleep_f, |
2093 |
.flags = CMD_NOFILE_OK, |
2094 |
.oneline = "waits for the given value in milliseconds",
|
2095 |
}; |
2096 |
|
2097 |
static void help_oneline(const char *cmd, const cmdinfo_t *ct) |
2098 |
{ |
2099 |
if (cmd) {
|
2100 |
printf("%s ", cmd);
|
2101 |
} else {
|
2102 |
printf("%s ", ct->name);
|
2103 |
if (ct->altname) {
|
2104 |
printf("(or %s) ", ct->altname);
|
2105 |
} |
2106 |
} |
2107 |
|
2108 |
if (ct->args) {
|
2109 |
printf("%s ", ct->args);
|
2110 |
} |
2111 |
printf("-- %s\n", ct->oneline);
|
2112 |
} |
2113 |
|
2114 |
static void help_onecmd(const char *cmd, const cmdinfo_t *ct) |
2115 |
{ |
2116 |
help_oneline(cmd, ct); |
2117 |
if (ct->help) {
|
2118 |
ct->help(); |
2119 |
} |
2120 |
} |
2121 |
|
2122 |
static void help_all(void) |
2123 |
{ |
2124 |
const cmdinfo_t *ct;
|
2125 |
|
2126 |
for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) {
|
2127 |
help_oneline(ct->name, ct); |
2128 |
} |
2129 |
printf("\nUse 'help commandname' for extended help.\n");
|
2130 |
} |
2131 |
|
2132 |
static int help_f(BlockDriverState *bs, int argc, char **argv) |
2133 |
{ |
2134 |
const cmdinfo_t *ct;
|
2135 |
|
2136 |
if (argc == 1) { |
2137 |
help_all(); |
2138 |
return 0; |
2139 |
} |
2140 |
|
2141 |
ct = find_command(argv[1]);
|
2142 |
if (ct == NULL) { |
2143 |
printf("command %s not found\n", argv[1]); |
2144 |
return 0; |
2145 |
} |
2146 |
|
2147 |
help_onecmd(argv[1], ct);
|
2148 |
return 0; |
2149 |
} |
2150 |
|
2151 |
static const cmdinfo_t help_cmd = { |
2152 |
.name = "help",
|
2153 |
.altname = "?",
|
2154 |
.cfunc = help_f, |
2155 |
.argmin = 0,
|
2156 |
.argmax = 1,
|
2157 |
.flags = CMD_FLAG_GLOBAL, |
2158 |
.args = "[command]",
|
2159 |
.oneline = "help for one or all commands",
|
2160 |
}; |
2161 |
|
2162 |
bool qemuio_command(BlockDriverState *bs, const char *cmd) |
2163 |
{ |
2164 |
char *input;
|
2165 |
const cmdinfo_t *ct;
|
2166 |
char **v;
|
2167 |
int c;
|
2168 |
bool done = false; |
2169 |
|
2170 |
input = g_strdup(cmd); |
2171 |
v = breakline(input, &c); |
2172 |
if (c) {
|
2173 |
ct = find_command(v[0]);
|
2174 |
if (ct) {
|
2175 |
done = command(bs, ct, c, v); |
2176 |
} else {
|
2177 |
fprintf(stderr, "command \"%s\" not found\n", v[0]); |
2178 |
} |
2179 |
} |
2180 |
g_free(input); |
2181 |
g_free(v); |
2182 |
|
2183 |
return done;
|
2184 |
} |
2185 |
|
2186 |
static void __attribute((constructor)) init_qemuio_commands(void) |
2187 |
{ |
2188 |
/* initialize commands */
|
2189 |
qemuio_add_command(&help_cmd); |
2190 |
qemuio_add_command(&read_cmd); |
2191 |
qemuio_add_command(&readv_cmd); |
2192 |
qemuio_add_command(&write_cmd); |
2193 |
qemuio_add_command(&writev_cmd); |
2194 |
qemuio_add_command(&multiwrite_cmd); |
2195 |
qemuio_add_command(&aio_read_cmd); |
2196 |
qemuio_add_command(&aio_write_cmd); |
2197 |
qemuio_add_command(&aio_flush_cmd); |
2198 |
qemuio_add_command(&flush_cmd); |
2199 |
qemuio_add_command(&truncate_cmd); |
2200 |
qemuio_add_command(&length_cmd); |
2201 |
qemuio_add_command(&info_cmd); |
2202 |
qemuio_add_command(&discard_cmd); |
2203 |
qemuio_add_command(&alloc_cmd); |
2204 |
qemuio_add_command(&map_cmd); |
2205 |
qemuio_add_command(&break_cmd); |
2206 |
qemuio_add_command(&remove_break_cmd); |
2207 |
qemuio_add_command(&resume_cmd); |
2208 |
qemuio_add_command(&wait_break_cmd); |
2209 |
qemuio_add_command(&abort_cmd); |
2210 |
qemuio_add_command(&sleep_cmd); |
2211 |
} |