root / qemu-io-cmds.c @ d9840e25
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/*
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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 "qemu/main-loop.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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} |
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|
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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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} |
34 |
|
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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) |
42 |
{ |
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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; |
49 |
} |
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return 1; |
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} |
52 |
|
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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]; |
57 |
|
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if (!init_check_command(bs, ct)) {
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return 0; |
60 |
} |
61 |
|
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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; |
77 |
} |
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optind = 0;
|
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return ct->cfunc(bs, argc, argv);
|
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} |
81 |
|
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static const cmdinfo_t *find_command(const char *cmd) |
83 |
{ |
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cmdinfo_t *ct; |
85 |
|
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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; |
91 |
} |
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} |
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return NULL; |
94 |
} |
95 |
|
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static char **breakline(char *input, int *count) |
97 |
{ |
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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;
|
102 |
|
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while (rval && (p = qemu_strsep(&input, " ")) != NULL) { |
104 |
if (!*p) {
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continue;
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} |
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c++; |
108 |
tmp = g_realloc(rval, sizeof(*rval) * (c + 1)); |
109 |
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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} |
123 |
|
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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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} |
129 |
|
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#define EXABYTES(x) ((long long)(x) << 60) |
131 |
#define PETABYTES(x) ((long long)(x) << 50) |
132 |
#define TERABYTES(x) ((long long)(x) << 40) |
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#define GIGABYTES(x) ((long long)(x) << 30) |
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#define MEGABYTES(x) ((long long)(x) << 20) |
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#define KILOBYTES(x) ((long long)(x) << 10) |
136 |
|
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#define TO_EXABYTES(x) ((x) / EXABYTES(1)) |
138 |
#define TO_PETABYTES(x) ((x) / PETABYTES(1)) |
139 |
#define TO_TERABYTES(x) ((x) / TERABYTES(1)) |
140 |
#define TO_GIGABYTES(x) ((x) / GIGABYTES(1)) |
141 |
#define TO_MEGABYTES(x) ((x) / MEGABYTES(1)) |
142 |
#define TO_KILOBYTES(x) ((x) / KILOBYTES(1)) |
143 |
|
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static void cvtstr(double value, char *str, size_t size) |
145 |
{ |
146 |
char *trim;
|
147 |
const char *suffix; |
148 |
|
149 |
if (value >= EXABYTES(1)) { |
150 |
suffix = " EiB";
|
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snprintf(str, size - 4, "%.3f", TO_EXABYTES(value)); |
152 |
} else if (value >= PETABYTES(1)) { |
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suffix = " PiB";
|
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snprintf(str, size - 4, "%.3f", TO_PETABYTES(value)); |
155 |
} else if (value >= TERABYTES(1)) { |
156 |
suffix = " TiB";
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snprintf(str, size - 4, "%.3f", TO_TERABYTES(value)); |
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} else if (value >= GIGABYTES(1)) { |
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suffix = " GiB";
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snprintf(str, size - 4, "%.3f", TO_GIGABYTES(value)); |
161 |
} else if (value >= MEGABYTES(1)) { |
162 |
suffix = " MiB";
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snprintf(str, size - 4, "%.3f", TO_MEGABYTES(value)); |
164 |
} else if (value >= KILOBYTES(1)) { |
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suffix = " KiB";
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snprintf(str, size - 4, "%.3f", TO_KILOBYTES(value)); |
167 |
} else {
|
168 |
suffix = " bytes";
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snprintf(str, size - 6, "%f", value); |
170 |
} |
171 |
|
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trim = strstr(str, ".000");
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173 |
if (trim) {
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174 |
strcpy(trim, suffix); |
175 |
} else {
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strcat(str, suffix); |
177 |
} |
178 |
} |
179 |
|
180 |
|
181 |
|
182 |
static struct timeval tsub(struct timeval t1, struct timeval t2) |
183 |
{ |
184 |
t1.tv_usec -= t2.tv_usec; |
185 |
if (t1.tv_usec < 0) { |
186 |
t1.tv_usec += 1000000;
|
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t1.tv_sec--; |
188 |
} |
189 |
t1.tv_sec -= t2.tv_sec; |
190 |
return t1;
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191 |
} |
192 |
|
193 |
static double tdiv(double value, struct timeval tv) |
194 |
{ |
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return value / ((double)tv.tv_sec + ((double)tv.tv_usec / 1000000.0)); |
196 |
} |
197 |
|
198 |
#define HOURS(sec) ((sec) / (60 * 60)) |
199 |
#define MINUTES(sec) (((sec) % (60 * 60)) / 60) |
200 |
#define SECONDS(sec) ((sec) % 60) |
201 |
|
202 |
enum {
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DEFAULT_TIME = 0x0,
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204 |
TERSE_FIXED_TIME = 0x1,
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VERBOSE_FIXED_TIME = 0x2,
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206 |
}; |
207 |
|
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static void timestr(struct timeval *tv, char *ts, size_t size, int format) |
209 |
{ |
210 |
double usec = (double)tv->tv_usec / 1000000.0; |
211 |
|
212 |
if (format & TERSE_FIXED_TIME) {
|
213 |
if (!HOURS(tv->tv_sec)) {
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214 |
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)); |
218 |
return;
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219 |
} |
220 |
format |= VERBOSE_FIXED_TIME; /* fallback if hours needed */
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221 |
} |
222 |
|
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if ((format & VERBOSE_FIXED_TIME) || tv->tv_sec) {
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224 |
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), |
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(unsigned int) SECONDS(tv->tv_sec), |
228 |
(unsigned int) (usec * 100)); |
229 |
} else {
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snprintf(ts, size, "0.%04u sec", (unsigned int) (usec * 10000)); |
231 |
} |
232 |
} |
233 |
|
234 |
/*
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* Parse the pattern argument to various sub-commands.
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236 |
*
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* Because the pattern is used as an argument to memset it must evaluate
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238 |
* to an unsigned integer that fits into a single byte.
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*/
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240 |
static int parse_pattern(const char *arg) |
241 |
{ |
242 |
char *endptr = NULL; |
243 |
long pattern;
|
244 |
|
245 |
pattern = strtol(arg, &endptr, 0);
|
246 |
if (pattern < 0 || pattern > UCHAR_MAX || *endptr != '\0') { |
247 |
printf("%s is not a valid pattern byte\n", arg);
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248 |
return -1; |
249 |
} |
250 |
|
251 |
return pattern;
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252 |
} |
253 |
|
254 |
/*
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255 |
* Memory allocation helpers.
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256 |
*
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257 |
* Make sure memory is aligned by default, or purposefully misaligned if
|
258 |
* that is specified on the command line.
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259 |
*/
|
260 |
|
261 |
#define MISALIGN_OFFSET 16 |
262 |
static void *qemu_io_alloc(BlockDriverState *bs, size_t len, int pattern) |
263 |
{ |
264 |
void *buf;
|
265 |
|
266 |
if (qemuio_misalign) {
|
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len += MISALIGN_OFFSET; |
268 |
} |
269 |
buf = qemu_blockalign(bs, len); |
270 |
memset(buf, pattern, len); |
271 |
if (qemuio_misalign) {
|
272 |
buf += MISALIGN_OFFSET; |
273 |
} |
274 |
return buf;
|
275 |
} |
276 |
|
277 |
static void qemu_io_free(void *p) |
278 |
{ |
279 |
if (qemuio_misalign) {
|
280 |
p -= MISALIGN_OFFSET; |
281 |
} |
282 |
qemu_vfree(p); |
283 |
} |
284 |
|
285 |
static void dump_buffer(const void *buffer, int64_t offset, int len) |
286 |
{ |
287 |
int i, j;
|
288 |
const uint8_t *p;
|
289 |
|
290 |
for (i = 0, p = buffer; i < len; i += 16) { |
291 |
const uint8_t *s = p;
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292 |
|
293 |
printf("%08" PRIx64 ": ", offset + i); |
294 |
for (j = 0; j < 16 && i + j < len; j++, p++) { |
295 |
printf("%02x ", *p);
|
296 |
} |
297 |
printf(" ");
|
298 |
for (j = 0; j < 16 && i + j < len; j++, s++) { |
299 |
if (isalnum(*s)) {
|
300 |
printf("%c", *s);
|
301 |
} else {
|
302 |
printf(".");
|
303 |
} |
304 |
} |
305 |
printf("\n");
|
306 |
} |
307 |
} |
308 |
|
309 |
static void print_report(const char *op, struct timeval *t, int64_t offset, |
310 |
int count, int total, int cnt, int Cflag) |
311 |
{ |
312 |
char s1[64], s2[64], ts[64]; |
313 |
|
314 |
timestr(t, ts, sizeof(ts), Cflag ? VERBOSE_FIXED_TIME : 0); |
315 |
if (!Cflag) {
|
316 |
cvtstr((double)total, s1, sizeof(s1)); |
317 |
cvtstr(tdiv((double)total, *t), s2, sizeof(s2)); |
318 |
printf("%s %d/%d bytes at offset %" PRId64 "\n", |
319 |
op, total, count, offset); |
320 |
printf("%s, %d ops; %s (%s/sec and %.4f ops/sec)\n",
|
321 |
s1, cnt, ts, s2, tdiv((double)cnt, *t));
|
322 |
} else {/* bytes,ops,time,bytes/sec,ops/sec */ |
323 |
printf("%d,%d,%s,%.3f,%.3f\n",
|
324 |
total, cnt, ts, |
325 |
tdiv((double)total, *t),
|
326 |
tdiv((double)cnt, *t));
|
327 |
} |
328 |
} |
329 |
|
330 |
/*
|
331 |
* Parse multiple length statements for vectored I/O, and construct an I/O
|
332 |
* vector matching it.
|
333 |
*/
|
334 |
static void * |
335 |
create_iovec(BlockDriverState *bs, QEMUIOVector *qiov, char **argv, int nr_iov, |
336 |
int pattern)
|
337 |
{ |
338 |
size_t *sizes = g_new0(size_t, nr_iov); |
339 |
size_t count = 0;
|
340 |
void *buf = NULL; |
341 |
void *p;
|
342 |
int i;
|
343 |
|
344 |
for (i = 0; i < nr_iov; i++) { |
345 |
char *arg = argv[i];
|
346 |
int64_t len; |
347 |
|
348 |
len = cvtnum(arg); |
349 |
if (len < 0) { |
350 |
printf("non-numeric length argument -- %s\n", arg);
|
351 |
goto fail;
|
352 |
} |
353 |
|
354 |
/* should be SIZE_T_MAX, but that doesn't exist */
|
355 |
if (len > INT_MAX) {
|
356 |
printf("too large length argument -- %s\n", arg);
|
357 |
goto fail;
|
358 |
} |
359 |
|
360 |
if (len & 0x1ff) { |
361 |
printf("length argument %" PRId64
|
362 |
" is not sector aligned\n", len);
|
363 |
goto fail;
|
364 |
} |
365 |
|
366 |
sizes[i] = len; |
367 |
count += len; |
368 |
} |
369 |
|
370 |
qemu_iovec_init(qiov, nr_iov); |
371 |
|
372 |
buf = p = qemu_io_alloc(bs, count, pattern); |
373 |
|
374 |
for (i = 0; i < nr_iov; i++) { |
375 |
qemu_iovec_add(qiov, p, sizes[i]); |
376 |
p += sizes[i]; |
377 |
} |
378 |
|
379 |
fail:
|
380 |
g_free(sizes); |
381 |
return buf;
|
382 |
} |
383 |
|
384 |
static int do_read(BlockDriverState *bs, char *buf, int64_t offset, int count, |
385 |
int *total)
|
386 |
{ |
387 |
int ret;
|
388 |
|
389 |
ret = bdrv_read(bs, offset >> 9, (uint8_t *)buf, count >> 9); |
390 |
if (ret < 0) { |
391 |
return ret;
|
392 |
} |
393 |
*total = count; |
394 |
return 1; |
395 |
} |
396 |
|
397 |
static int do_write(BlockDriverState *bs, char *buf, int64_t offset, int count, |
398 |
int *total)
|
399 |
{ |
400 |
int ret;
|
401 |
|
402 |
ret = bdrv_write(bs, offset >> 9, (uint8_t *)buf, count >> 9); |
403 |
if (ret < 0) { |
404 |
return ret;
|
405 |
} |
406 |
*total = count; |
407 |
return 1; |
408 |
} |
409 |
|
410 |
static int do_pread(BlockDriverState *bs, char *buf, int64_t offset, int count, |
411 |
int *total)
|
412 |
{ |
413 |
*total = bdrv_pread(bs, offset, (uint8_t *)buf, count); |
414 |
if (*total < 0) { |
415 |
return *total;
|
416 |
} |
417 |
return 1; |
418 |
} |
419 |
|
420 |
static int do_pwrite(BlockDriverState *bs, char *buf, int64_t offset, int count, |
421 |
int *total)
|
422 |
{ |
423 |
*total = bdrv_pwrite(bs, offset, (uint8_t *)buf, count); |
424 |
if (*total < 0) { |
425 |
return *total;
|
426 |
} |
427 |
return 1; |
428 |
} |
429 |
|
430 |
typedef struct { |
431 |
BlockDriverState *bs; |
432 |
int64_t offset; |
433 |
int count;
|
434 |
int *total;
|
435 |
int ret;
|
436 |
bool done;
|
437 |
} CoWriteZeroes; |
438 |
|
439 |
static void coroutine_fn co_write_zeroes_entry(void *opaque) |
440 |
{ |
441 |
CoWriteZeroes *data = opaque; |
442 |
|
443 |
data->ret = bdrv_co_write_zeroes(data->bs, data->offset / BDRV_SECTOR_SIZE, |
444 |
data->count / BDRV_SECTOR_SIZE); |
445 |
data->done = true;
|
446 |
if (data->ret < 0) { |
447 |
*data->total = data->ret; |
448 |
return;
|
449 |
} |
450 |
|
451 |
*data->total = data->count; |
452 |
} |
453 |
|
454 |
static int do_co_write_zeroes(BlockDriverState *bs, int64_t offset, int count, |
455 |
int *total)
|
456 |
{ |
457 |
Coroutine *co; |
458 |
CoWriteZeroes data = { |
459 |
.bs = bs, |
460 |
.offset = offset, |
461 |
.count = count, |
462 |
.total = total, |
463 |
.done = false,
|
464 |
}; |
465 |
|
466 |
co = qemu_coroutine_create(co_write_zeroes_entry); |
467 |
qemu_coroutine_enter(co, &data); |
468 |
while (!data.done) {
|
469 |
qemu_aio_wait(); |
470 |
} |
471 |
if (data.ret < 0) { |
472 |
return data.ret;
|
473 |
} else {
|
474 |
return 1; |
475 |
} |
476 |
} |
477 |
|
478 |
static int do_write_compressed(BlockDriverState *bs, char *buf, int64_t offset, |
479 |
int count, int *total) |
480 |
{ |
481 |
int ret;
|
482 |
|
483 |
ret = bdrv_write_compressed(bs, offset >> 9, (uint8_t *)buf, count >> 9); |
484 |
if (ret < 0) { |
485 |
return ret;
|
486 |
} |
487 |
*total = count; |
488 |
return 1; |
489 |
} |
490 |
|
491 |
static int do_load_vmstate(BlockDriverState *bs, char *buf, int64_t offset, |
492 |
int count, int *total) |
493 |
{ |
494 |
*total = bdrv_load_vmstate(bs, (uint8_t *)buf, offset, count); |
495 |
if (*total < 0) { |
496 |
return *total;
|
497 |
} |
498 |
return 1; |
499 |
} |
500 |
|
501 |
static int do_save_vmstate(BlockDriverState *bs, char *buf, int64_t offset, |
502 |
int count, int *total) |
503 |
{ |
504 |
*total = bdrv_save_vmstate(bs, (uint8_t *)buf, offset, count); |
505 |
if (*total < 0) { |
506 |
return *total;
|
507 |
} |
508 |
return 1; |
509 |
} |
510 |
|
511 |
#define NOT_DONE 0x7fffffff |
512 |
static void aio_rw_done(void *opaque, int ret) |
513 |
{ |
514 |
*(int *)opaque = ret;
|
515 |
} |
516 |
|
517 |
static int do_aio_readv(BlockDriverState *bs, QEMUIOVector *qiov, |
518 |
int64_t offset, int *total)
|
519 |
{ |
520 |
int async_ret = NOT_DONE;
|
521 |
|
522 |
bdrv_aio_readv(bs, offset >> 9, qiov, qiov->size >> 9, |
523 |
aio_rw_done, &async_ret); |
524 |
while (async_ret == NOT_DONE) {
|
525 |
main_loop_wait(false);
|
526 |
} |
527 |
|
528 |
*total = qiov->size; |
529 |
return async_ret < 0 ? async_ret : 1; |
530 |
} |
531 |
|
532 |
static int do_aio_writev(BlockDriverState *bs, QEMUIOVector *qiov, |
533 |
int64_t offset, int *total)
|
534 |
{ |
535 |
int async_ret = NOT_DONE;
|
536 |
|
537 |
bdrv_aio_writev(bs, offset >> 9, qiov, qiov->size >> 9, |
538 |
aio_rw_done, &async_ret); |
539 |
while (async_ret == NOT_DONE) {
|
540 |
main_loop_wait(false);
|
541 |
} |
542 |
|
543 |
*total = qiov->size; |
544 |
return async_ret < 0 ? async_ret : 1; |
545 |
} |
546 |
|
547 |
struct multiwrite_async_ret {
|
548 |
int num_done;
|
549 |
int error;
|
550 |
}; |
551 |
|
552 |
static void multiwrite_cb(void *opaque, int ret) |
553 |
{ |
554 |
struct multiwrite_async_ret *async_ret = opaque;
|
555 |
|
556 |
async_ret->num_done++; |
557 |
if (ret < 0) { |
558 |
async_ret->error = ret; |
559 |
} |
560 |
} |
561 |
|
562 |
static int do_aio_multiwrite(BlockDriverState *bs, BlockRequest* reqs, |
563 |
int num_reqs, int *total) |
564 |
{ |
565 |
int i, ret;
|
566 |
struct multiwrite_async_ret async_ret = {
|
567 |
.num_done = 0,
|
568 |
.error = 0,
|
569 |
}; |
570 |
|
571 |
*total = 0;
|
572 |
for (i = 0; i < num_reqs; i++) { |
573 |
reqs[i].cb = multiwrite_cb; |
574 |
reqs[i].opaque = &async_ret; |
575 |
*total += reqs[i].qiov->size; |
576 |
} |
577 |
|
578 |
ret = bdrv_aio_multiwrite(bs, reqs, num_reqs); |
579 |
if (ret < 0) { |
580 |
return ret;
|
581 |
} |
582 |
|
583 |
while (async_ret.num_done < num_reqs) {
|
584 |
main_loop_wait(false);
|
585 |
} |
586 |
|
587 |
return async_ret.error < 0 ? async_ret.error : 1; |
588 |
} |
589 |
|
590 |
static void read_help(void) |
591 |
{ |
592 |
printf( |
593 |
"\n"
|
594 |
" reads a range of bytes from the given offset\n"
|
595 |
"\n"
|
596 |
" Example:\n"
|
597 |
" 'read -v 512 1k' - dumps 1 kilobyte read from 512 bytes into the file\n"
|
598 |
"\n"
|
599 |
" Reads a segment of the currently open file, optionally dumping it to the\n"
|
600 |
" standard output stream (with -v option) for subsequent inspection.\n"
|
601 |
" -b, -- read from the VM state rather than the virtual disk\n"
|
602 |
" -C, -- report statistics in a machine parsable format\n"
|
603 |
" -l, -- length for pattern verification (only with -P)\n"
|
604 |
" -p, -- use bdrv_pread to read the file\n"
|
605 |
" -P, -- use a pattern to verify read data\n"
|
606 |
" -q, -- quiet mode, do not show I/O statistics\n"
|
607 |
" -s, -- start offset for pattern verification (only with -P)\n"
|
608 |
" -v, -- dump buffer to standard output\n"
|
609 |
"\n");
|
610 |
} |
611 |
|
612 |
static int read_f(BlockDriverState *bs, int argc, char **argv); |
613 |
|
614 |
static const cmdinfo_t read_cmd = { |
615 |
.name = "read",
|
616 |
.altname = "r",
|
617 |
.cfunc = read_f, |
618 |
.argmin = 2,
|
619 |
.argmax = -1,
|
620 |
.args = "[-abCpqv] [-P pattern [-s off] [-l len]] off len",
|
621 |
.oneline = "reads a number of bytes at a specified offset",
|
622 |
.help = read_help, |
623 |
}; |
624 |
|
625 |
static int read_f(BlockDriverState *bs, int argc, char **argv) |
626 |
{ |
627 |
struct timeval t1, t2;
|
628 |
int Cflag = 0, pflag = 0, qflag = 0, vflag = 0; |
629 |
int Pflag = 0, sflag = 0, lflag = 0, bflag = 0; |
630 |
int c, cnt;
|
631 |
char *buf;
|
632 |
int64_t offset; |
633 |
int count;
|
634 |
/* Some compilers get confused and warn if this is not initialized. */
|
635 |
int total = 0; |
636 |
int pattern = 0, pattern_offset = 0, pattern_count = 0; |
637 |
|
638 |
while ((c = getopt(argc, argv, "bCl:pP:qs:v")) != EOF) { |
639 |
switch (c) {
|
640 |
case 'b': |
641 |
bflag = 1;
|
642 |
break;
|
643 |
case 'C': |
644 |
Cflag = 1;
|
645 |
break;
|
646 |
case 'l': |
647 |
lflag = 1;
|
648 |
pattern_count = cvtnum(optarg); |
649 |
if (pattern_count < 0) { |
650 |
printf("non-numeric length argument -- %s\n", optarg);
|
651 |
return 0; |
652 |
} |
653 |
break;
|
654 |
case 'p': |
655 |
pflag = 1;
|
656 |
break;
|
657 |
case 'P': |
658 |
Pflag = 1;
|
659 |
pattern = parse_pattern(optarg); |
660 |
if (pattern < 0) { |
661 |
return 0; |
662 |
} |
663 |
break;
|
664 |
case 'q': |
665 |
qflag = 1;
|
666 |
break;
|
667 |
case 's': |
668 |
sflag = 1;
|
669 |
pattern_offset = cvtnum(optarg); |
670 |
if (pattern_offset < 0) { |
671 |
printf("non-numeric length argument -- %s\n", optarg);
|
672 |
return 0; |
673 |
} |
674 |
break;
|
675 |
case 'v': |
676 |
vflag = 1;
|
677 |
break;
|
678 |
default:
|
679 |
return qemuio_command_usage(&read_cmd);
|
680 |
} |
681 |
} |
682 |
|
683 |
if (optind != argc - 2) { |
684 |
return qemuio_command_usage(&read_cmd);
|
685 |
} |
686 |
|
687 |
if (bflag && pflag) {
|
688 |
printf("-b and -p cannot be specified at the same time\n");
|
689 |
return 0; |
690 |
} |
691 |
|
692 |
offset = cvtnum(argv[optind]); |
693 |
if (offset < 0) { |
694 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
695 |
return 0; |
696 |
} |
697 |
|
698 |
optind++; |
699 |
count = cvtnum(argv[optind]); |
700 |
if (count < 0) { |
701 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
702 |
return 0; |
703 |
} |
704 |
|
705 |
if (!Pflag && (lflag || sflag)) {
|
706 |
return qemuio_command_usage(&read_cmd);
|
707 |
} |
708 |
|
709 |
if (!lflag) {
|
710 |
pattern_count = count - pattern_offset; |
711 |
} |
712 |
|
713 |
if ((pattern_count < 0) || (pattern_count + pattern_offset > count)) { |
714 |
printf("pattern verification range exceeds end of read data\n");
|
715 |
return 0; |
716 |
} |
717 |
|
718 |
if (!pflag) {
|
719 |
if (offset & 0x1ff) { |
720 |
printf("offset %" PRId64 " is not sector aligned\n", |
721 |
offset); |
722 |
return 0; |
723 |
} |
724 |
if (count & 0x1ff) { |
725 |
printf("count %d is not sector aligned\n",
|
726 |
count); |
727 |
return 0; |
728 |
} |
729 |
} |
730 |
|
731 |
buf = qemu_io_alloc(bs, count, 0xab);
|
732 |
|
733 |
gettimeofday(&t1, NULL);
|
734 |
if (pflag) {
|
735 |
cnt = do_pread(bs, buf, offset, count, &total); |
736 |
} else if (bflag) { |
737 |
cnt = do_load_vmstate(bs, buf, offset, count, &total); |
738 |
} else {
|
739 |
cnt = do_read(bs, buf, offset, count, &total); |
740 |
} |
741 |
gettimeofday(&t2, NULL);
|
742 |
|
743 |
if (cnt < 0) { |
744 |
printf("read failed: %s\n", strerror(-cnt));
|
745 |
goto out;
|
746 |
} |
747 |
|
748 |
if (Pflag) {
|
749 |
void *cmp_buf = g_malloc(pattern_count);
|
750 |
memset(cmp_buf, pattern, pattern_count); |
751 |
if (memcmp(buf + pattern_offset, cmp_buf, pattern_count)) {
|
752 |
printf("Pattern verification failed at offset %"
|
753 |
PRId64 ", %d bytes\n",
|
754 |
offset + pattern_offset, pattern_count); |
755 |
} |
756 |
g_free(cmp_buf); |
757 |
} |
758 |
|
759 |
if (qflag) {
|
760 |
goto out;
|
761 |
} |
762 |
|
763 |
if (vflag) {
|
764 |
dump_buffer(buf, offset, count); |
765 |
} |
766 |
|
767 |
/* Finally, report back -- -C gives a parsable format */
|
768 |
t2 = tsub(t2, t1); |
769 |
print_report("read", &t2, offset, count, total, cnt, Cflag);
|
770 |
|
771 |
out:
|
772 |
qemu_io_free(buf); |
773 |
|
774 |
return 0; |
775 |
} |
776 |
|
777 |
static void readv_help(void) |
778 |
{ |
779 |
printf( |
780 |
"\n"
|
781 |
" reads a range of bytes from the given offset into multiple buffers\n"
|
782 |
"\n"
|
783 |
" Example:\n"
|
784 |
" 'readv -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n"
|
785 |
"\n"
|
786 |
" Reads a segment of the currently open file, optionally dumping it to the\n"
|
787 |
" standard output stream (with -v option) for subsequent inspection.\n"
|
788 |
" Uses multiple iovec buffers if more than one byte range is specified.\n"
|
789 |
" -C, -- report statistics in a machine parsable format\n"
|
790 |
" -P, -- use a pattern to verify read data\n"
|
791 |
" -v, -- dump buffer to standard output\n"
|
792 |
" -q, -- quiet mode, do not show I/O statistics\n"
|
793 |
"\n");
|
794 |
} |
795 |
|
796 |
static int readv_f(BlockDriverState *bs, int argc, char **argv); |
797 |
|
798 |
static const cmdinfo_t readv_cmd = { |
799 |
.name = "readv",
|
800 |
.cfunc = readv_f, |
801 |
.argmin = 2,
|
802 |
.argmax = -1,
|
803 |
.args = "[-Cqv] [-P pattern ] off len [len..]",
|
804 |
.oneline = "reads a number of bytes at a specified offset",
|
805 |
.help = readv_help, |
806 |
}; |
807 |
|
808 |
static int readv_f(BlockDriverState *bs, int argc, char **argv) |
809 |
{ |
810 |
struct timeval t1, t2;
|
811 |
int Cflag = 0, qflag = 0, vflag = 0; |
812 |
int c, cnt;
|
813 |
char *buf;
|
814 |
int64_t offset; |
815 |
/* Some compilers get confused and warn if this is not initialized. */
|
816 |
int total = 0; |
817 |
int nr_iov;
|
818 |
QEMUIOVector qiov; |
819 |
int pattern = 0; |
820 |
int Pflag = 0; |
821 |
|
822 |
while ((c = getopt(argc, argv, "CP:qv")) != EOF) { |
823 |
switch (c) {
|
824 |
case 'C': |
825 |
Cflag = 1;
|
826 |
break;
|
827 |
case 'P': |
828 |
Pflag = 1;
|
829 |
pattern = parse_pattern(optarg); |
830 |
if (pattern < 0) { |
831 |
return 0; |
832 |
} |
833 |
break;
|
834 |
case 'q': |
835 |
qflag = 1;
|
836 |
break;
|
837 |
case 'v': |
838 |
vflag = 1;
|
839 |
break;
|
840 |
default:
|
841 |
return qemuio_command_usage(&readv_cmd);
|
842 |
} |
843 |
} |
844 |
|
845 |
if (optind > argc - 2) { |
846 |
return qemuio_command_usage(&readv_cmd);
|
847 |
} |
848 |
|
849 |
|
850 |
offset = cvtnum(argv[optind]); |
851 |
if (offset < 0) { |
852 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
853 |
return 0; |
854 |
} |
855 |
optind++; |
856 |
|
857 |
if (offset & 0x1ff) { |
858 |
printf("offset %" PRId64 " is not sector aligned\n", |
859 |
offset); |
860 |
return 0; |
861 |
} |
862 |
|
863 |
nr_iov = argc - optind; |
864 |
buf = create_iovec(bs, &qiov, &argv[optind], nr_iov, 0xab);
|
865 |
if (buf == NULL) { |
866 |
return 0; |
867 |
} |
868 |
|
869 |
gettimeofday(&t1, NULL);
|
870 |
cnt = do_aio_readv(bs, &qiov, offset, &total); |
871 |
gettimeofday(&t2, NULL);
|
872 |
|
873 |
if (cnt < 0) { |
874 |
printf("readv failed: %s\n", strerror(-cnt));
|
875 |
goto out;
|
876 |
} |
877 |
|
878 |
if (Pflag) {
|
879 |
void *cmp_buf = g_malloc(qiov.size);
|
880 |
memset(cmp_buf, pattern, qiov.size); |
881 |
if (memcmp(buf, cmp_buf, qiov.size)) {
|
882 |
printf("Pattern verification failed at offset %"
|
883 |
PRId64 ", %zd bytes\n", offset, qiov.size);
|
884 |
} |
885 |
g_free(cmp_buf); |
886 |
} |
887 |
|
888 |
if (qflag) {
|
889 |
goto out;
|
890 |
} |
891 |
|
892 |
if (vflag) {
|
893 |
dump_buffer(buf, offset, qiov.size); |
894 |
} |
895 |
|
896 |
/* Finally, report back -- -C gives a parsable format */
|
897 |
t2 = tsub(t2, t1); |
898 |
print_report("read", &t2, offset, qiov.size, total, cnt, Cflag);
|
899 |
|
900 |
out:
|
901 |
qemu_iovec_destroy(&qiov); |
902 |
qemu_io_free(buf); |
903 |
return 0; |
904 |
} |
905 |
|
906 |
static void write_help(void) |
907 |
{ |
908 |
printf( |
909 |
"\n"
|
910 |
" writes a range of bytes from the given offset\n"
|
911 |
"\n"
|
912 |
" Example:\n"
|
913 |
" 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n"
|
914 |
"\n"
|
915 |
" Writes into a segment of the currently open file, using a buffer\n"
|
916 |
" filled with a set pattern (0xcdcdcdcd).\n"
|
917 |
" -b, -- write to the VM state rather than the virtual disk\n"
|
918 |
" -c, -- write compressed data with bdrv_write_compressed\n"
|
919 |
" -p, -- use bdrv_pwrite to write the file\n"
|
920 |
" -P, -- use different pattern to fill file\n"
|
921 |
" -C, -- report statistics in a machine parsable format\n"
|
922 |
" -q, -- quiet mode, do not show I/O statistics\n"
|
923 |
" -z, -- write zeroes using bdrv_co_write_zeroes\n"
|
924 |
"\n");
|
925 |
} |
926 |
|
927 |
static int write_f(BlockDriverState *bs, int argc, char **argv); |
928 |
|
929 |
static const cmdinfo_t write_cmd = { |
930 |
.name = "write",
|
931 |
.altname = "w",
|
932 |
.cfunc = write_f, |
933 |
.argmin = 2,
|
934 |
.argmax = -1,
|
935 |
.args = "[-bcCpqz] [-P pattern ] off len",
|
936 |
.oneline = "writes a number of bytes at a specified offset",
|
937 |
.help = write_help, |
938 |
}; |
939 |
|
940 |
static int write_f(BlockDriverState *bs, int argc, char **argv) |
941 |
{ |
942 |
struct timeval t1, t2;
|
943 |
int Cflag = 0, pflag = 0, qflag = 0, bflag = 0, Pflag = 0, zflag = 0; |
944 |
int cflag = 0; |
945 |
int c, cnt;
|
946 |
char *buf = NULL; |
947 |
int64_t offset; |
948 |
int count;
|
949 |
/* Some compilers get confused and warn if this is not initialized. */
|
950 |
int total = 0; |
951 |
int pattern = 0xcd; |
952 |
|
953 |
while ((c = getopt(argc, argv, "bcCpP:qz")) != EOF) { |
954 |
switch (c) {
|
955 |
case 'b': |
956 |
bflag = 1;
|
957 |
break;
|
958 |
case 'c': |
959 |
cflag = 1;
|
960 |
break;
|
961 |
case 'C': |
962 |
Cflag = 1;
|
963 |
break;
|
964 |
case 'p': |
965 |
pflag = 1;
|
966 |
break;
|
967 |
case 'P': |
968 |
Pflag = 1;
|
969 |
pattern = parse_pattern(optarg); |
970 |
if (pattern < 0) { |
971 |
return 0; |
972 |
} |
973 |
break;
|
974 |
case 'q': |
975 |
qflag = 1;
|
976 |
break;
|
977 |
case 'z': |
978 |
zflag = 1;
|
979 |
break;
|
980 |
default:
|
981 |
return qemuio_command_usage(&write_cmd);
|
982 |
} |
983 |
} |
984 |
|
985 |
if (optind != argc - 2) { |
986 |
return qemuio_command_usage(&write_cmd);
|
987 |
} |
988 |
|
989 |
if (bflag + pflag + zflag > 1) { |
990 |
printf("-b, -p, or -z cannot be specified at the same time\n");
|
991 |
return 0; |
992 |
} |
993 |
|
994 |
if (zflag && Pflag) {
|
995 |
printf("-z and -P cannot be specified at the same time\n");
|
996 |
return 0; |
997 |
} |
998 |
|
999 |
offset = cvtnum(argv[optind]); |
1000 |
if (offset < 0) { |
1001 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
1002 |
return 0; |
1003 |
} |
1004 |
|
1005 |
optind++; |
1006 |
count = cvtnum(argv[optind]); |
1007 |
if (count < 0) { |
1008 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
1009 |
return 0; |
1010 |
} |
1011 |
|
1012 |
if (!pflag) {
|
1013 |
if (offset & 0x1ff) { |
1014 |
printf("offset %" PRId64 " is not sector aligned\n", |
1015 |
offset); |
1016 |
return 0; |
1017 |
} |
1018 |
|
1019 |
if (count & 0x1ff) { |
1020 |
printf("count %d is not sector aligned\n",
|
1021 |
count); |
1022 |
return 0; |
1023 |
} |
1024 |
} |
1025 |
|
1026 |
if (!zflag) {
|
1027 |
buf = qemu_io_alloc(bs, count, pattern); |
1028 |
} |
1029 |
|
1030 |
gettimeofday(&t1, NULL);
|
1031 |
if (pflag) {
|
1032 |
cnt = do_pwrite(bs, buf, offset, count, &total); |
1033 |
} else if (bflag) { |
1034 |
cnt = do_save_vmstate(bs, buf, offset, count, &total); |
1035 |
} else if (zflag) { |
1036 |
cnt = do_co_write_zeroes(bs, offset, count, &total); |
1037 |
} else if (cflag) { |
1038 |
cnt = do_write_compressed(bs, buf, offset, count, &total); |
1039 |
} else {
|
1040 |
cnt = do_write(bs, buf, offset, count, &total); |
1041 |
} |
1042 |
gettimeofday(&t2, NULL);
|
1043 |
|
1044 |
if (cnt < 0) { |
1045 |
printf("write failed: %s\n", strerror(-cnt));
|
1046 |
goto out;
|
1047 |
} |
1048 |
|
1049 |
if (qflag) {
|
1050 |
goto out;
|
1051 |
} |
1052 |
|
1053 |
/* Finally, report back -- -C gives a parsable format */
|
1054 |
t2 = tsub(t2, t1); |
1055 |
print_report("wrote", &t2, offset, count, total, cnt, Cflag);
|
1056 |
|
1057 |
out:
|
1058 |
if (!zflag) {
|
1059 |
qemu_io_free(buf); |
1060 |
} |
1061 |
|
1062 |
return 0; |
1063 |
} |
1064 |
|
1065 |
static void |
1066 |
writev_help(void)
|
1067 |
{ |
1068 |
printf( |
1069 |
"\n"
|
1070 |
" writes a range of bytes from the given offset source from multiple buffers\n"
|
1071 |
"\n"
|
1072 |
" Example:\n"
|
1073 |
" 'write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
|
1074 |
"\n"
|
1075 |
" Writes into a segment of the currently open file, using a buffer\n"
|
1076 |
" filled with a set pattern (0xcdcdcdcd).\n"
|
1077 |
" -P, -- use different pattern to fill file\n"
|
1078 |
" -C, -- report statistics in a machine parsable format\n"
|
1079 |
" -q, -- quiet mode, do not show I/O statistics\n"
|
1080 |
"\n");
|
1081 |
} |
1082 |
|
1083 |
static int writev_f(BlockDriverState *bs, int argc, char **argv); |
1084 |
|
1085 |
static const cmdinfo_t writev_cmd = { |
1086 |
.name = "writev",
|
1087 |
.cfunc = writev_f, |
1088 |
.argmin = 2,
|
1089 |
.argmax = -1,
|
1090 |
.args = "[-Cq] [-P pattern ] off len [len..]",
|
1091 |
.oneline = "writes a number of bytes at a specified offset",
|
1092 |
.help = writev_help, |
1093 |
}; |
1094 |
|
1095 |
static int writev_f(BlockDriverState *bs, int argc, char **argv) |
1096 |
{ |
1097 |
struct timeval t1, t2;
|
1098 |
int Cflag = 0, qflag = 0; |
1099 |
int c, cnt;
|
1100 |
char *buf;
|
1101 |
int64_t offset; |
1102 |
/* Some compilers get confused and warn if this is not initialized. */
|
1103 |
int total = 0; |
1104 |
int nr_iov;
|
1105 |
int pattern = 0xcd; |
1106 |
QEMUIOVector qiov; |
1107 |
|
1108 |
while ((c = getopt(argc, argv, "CqP:")) != EOF) { |
1109 |
switch (c) {
|
1110 |
case 'C': |
1111 |
Cflag = 1;
|
1112 |
break;
|
1113 |
case 'q': |
1114 |
qflag = 1;
|
1115 |
break;
|
1116 |
case 'P': |
1117 |
pattern = parse_pattern(optarg); |
1118 |
if (pattern < 0) { |
1119 |
return 0; |
1120 |
} |
1121 |
break;
|
1122 |
default:
|
1123 |
return qemuio_command_usage(&writev_cmd);
|
1124 |
} |
1125 |
} |
1126 |
|
1127 |
if (optind > argc - 2) { |
1128 |
return qemuio_command_usage(&writev_cmd);
|
1129 |
} |
1130 |
|
1131 |
offset = cvtnum(argv[optind]); |
1132 |
if (offset < 0) { |
1133 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
1134 |
return 0; |
1135 |
} |
1136 |
optind++; |
1137 |
|
1138 |
if (offset & 0x1ff) { |
1139 |
printf("offset %" PRId64 " is not sector aligned\n", |
1140 |
offset); |
1141 |
return 0; |
1142 |
} |
1143 |
|
1144 |
nr_iov = argc - optind; |
1145 |
buf = create_iovec(bs, &qiov, &argv[optind], nr_iov, pattern); |
1146 |
if (buf == NULL) { |
1147 |
return 0; |
1148 |
} |
1149 |
|
1150 |
gettimeofday(&t1, NULL);
|
1151 |
cnt = do_aio_writev(bs, &qiov, offset, &total); |
1152 |
gettimeofday(&t2, NULL);
|
1153 |
|
1154 |
if (cnt < 0) { |
1155 |
printf("writev failed: %s\n", strerror(-cnt));
|
1156 |
goto out;
|
1157 |
} |
1158 |
|
1159 |
if (qflag) {
|
1160 |
goto out;
|
1161 |
} |
1162 |
|
1163 |
/* Finally, report back -- -C gives a parsable format */
|
1164 |
t2 = tsub(t2, t1); |
1165 |
print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag);
|
1166 |
out:
|
1167 |
qemu_iovec_destroy(&qiov); |
1168 |
qemu_io_free(buf); |
1169 |
return 0; |
1170 |
} |
1171 |
|
1172 |
static void multiwrite_help(void) |
1173 |
{ |
1174 |
printf( |
1175 |
"\n"
|
1176 |
" writes a range of bytes from the given offset source from multiple buffers,\n"
|
1177 |
" in a batch of requests that may be merged by qemu\n"
|
1178 |
"\n"
|
1179 |
" Example:\n"
|
1180 |
" 'multiwrite 512 1k 1k ; 4k 1k'\n"
|
1181 |
" writes 2 kB at 512 bytes and 1 kB at 4 kB into the open file\n"
|
1182 |
"\n"
|
1183 |
" Writes into a segment of the currently open file, using a buffer\n"
|
1184 |
" filled with a set pattern (0xcdcdcdcd). The pattern byte is increased\n"
|
1185 |
" by one for each request contained in the multiwrite command.\n"
|
1186 |
" -P, -- use different pattern to fill file\n"
|
1187 |
" -C, -- report statistics in a machine parsable format\n"
|
1188 |
" -q, -- quiet mode, do not show I/O statistics\n"
|
1189 |
"\n");
|
1190 |
} |
1191 |
|
1192 |
static int multiwrite_f(BlockDriverState *bs, int argc, char **argv); |
1193 |
|
1194 |
static const cmdinfo_t multiwrite_cmd = { |
1195 |
.name = "multiwrite",
|
1196 |
.cfunc = multiwrite_f, |
1197 |
.argmin = 2,
|
1198 |
.argmax = -1,
|
1199 |
.args = "[-Cq] [-P pattern ] off len [len..] [; off len [len..]..]",
|
1200 |
.oneline = "issues multiple write requests at once",
|
1201 |
.help = multiwrite_help, |
1202 |
}; |
1203 |
|
1204 |
static int multiwrite_f(BlockDriverState *bs, int argc, char **argv) |
1205 |
{ |
1206 |
struct timeval t1, t2;
|
1207 |
int Cflag = 0, qflag = 0; |
1208 |
int c, cnt;
|
1209 |
char **buf;
|
1210 |
int64_t offset, first_offset = 0;
|
1211 |
/* Some compilers get confused and warn if this is not initialized. */
|
1212 |
int total = 0; |
1213 |
int nr_iov;
|
1214 |
int nr_reqs;
|
1215 |
int pattern = 0xcd; |
1216 |
QEMUIOVector *qiovs; |
1217 |
int i;
|
1218 |
BlockRequest *reqs; |
1219 |
|
1220 |
while ((c = getopt(argc, argv, "CqP:")) != EOF) { |
1221 |
switch (c) {
|
1222 |
case 'C': |
1223 |
Cflag = 1;
|
1224 |
break;
|
1225 |
case 'q': |
1226 |
qflag = 1;
|
1227 |
break;
|
1228 |
case 'P': |
1229 |
pattern = parse_pattern(optarg); |
1230 |
if (pattern < 0) { |
1231 |
return 0; |
1232 |
} |
1233 |
break;
|
1234 |
default:
|
1235 |
return qemuio_command_usage(&writev_cmd);
|
1236 |
} |
1237 |
} |
1238 |
|
1239 |
if (optind > argc - 2) { |
1240 |
return qemuio_command_usage(&writev_cmd);
|
1241 |
} |
1242 |
|
1243 |
nr_reqs = 1;
|
1244 |
for (i = optind; i < argc; i++) {
|
1245 |
if (!strcmp(argv[i], ";")) { |
1246 |
nr_reqs++; |
1247 |
} |
1248 |
} |
1249 |
|
1250 |
reqs = g_malloc0(nr_reqs * sizeof(*reqs));
|
1251 |
buf = g_malloc0(nr_reqs * sizeof(*buf));
|
1252 |
qiovs = g_malloc(nr_reqs * sizeof(*qiovs));
|
1253 |
|
1254 |
for (i = 0; i < nr_reqs && optind < argc; i++) { |
1255 |
int j;
|
1256 |
|
1257 |
/* Read the offset of the request */
|
1258 |
offset = cvtnum(argv[optind]); |
1259 |
if (offset < 0) { |
1260 |
printf("non-numeric offset argument -- %s\n", argv[optind]);
|
1261 |
goto out;
|
1262 |
} |
1263 |
optind++; |
1264 |
|
1265 |
if (offset & 0x1ff) { |
1266 |
printf("offset %lld is not sector aligned\n",
|
1267 |
(long long)offset); |
1268 |
goto out;
|
1269 |
} |
1270 |
|
1271 |
if (i == 0) { |
1272 |
first_offset = offset; |
1273 |
} |
1274 |
|
1275 |
/* Read lengths for qiov entries */
|
1276 |
for (j = optind; j < argc; j++) {
|
1277 |
if (!strcmp(argv[j], ";")) { |
1278 |
break;
|
1279 |
} |
1280 |
} |
1281 |
|
1282 |
nr_iov = j - optind; |
1283 |
|
1284 |
/* Build request */
|
1285 |
buf[i] = create_iovec(bs, &qiovs[i], &argv[optind], nr_iov, pattern); |
1286 |
if (buf[i] == NULL) { |
1287 |
goto out;
|
1288 |
} |
1289 |
|
1290 |
reqs[i].qiov = &qiovs[i]; |
1291 |
reqs[i].sector = offset >> 9;
|
1292 |
reqs[i].nb_sectors = reqs[i].qiov->size >> 9;
|
1293 |
|
1294 |
optind = j + 1;
|
1295 |
|
1296 |
pattern++; |
1297 |
} |
1298 |
|
1299 |
/* If there were empty requests at the end, ignore them */
|
1300 |
nr_reqs = i; |
1301 |
|
1302 |
gettimeofday(&t1, NULL);
|
1303 |
cnt = do_aio_multiwrite(bs, reqs, nr_reqs, &total); |
1304 |
gettimeofday(&t2, NULL);
|
1305 |
|
1306 |
if (cnt < 0) { |
1307 |
printf("aio_multiwrite failed: %s\n", strerror(-cnt));
|
1308 |
goto out;
|
1309 |
} |
1310 |
|
1311 |
if (qflag) {
|
1312 |
goto out;
|
1313 |
} |
1314 |
|
1315 |
/* Finally, report back -- -C gives a parsable format */
|
1316 |
t2 = tsub(t2, t1); |
1317 |
print_report("wrote", &t2, first_offset, total, total, cnt, Cflag);
|
1318 |
out:
|
1319 |
for (i = 0; i < nr_reqs; i++) { |
1320 |
qemu_io_free(buf[i]); |
1321 |
if (reqs[i].qiov != NULL) { |
1322 |
qemu_iovec_destroy(&qiovs[i]); |
1323 |
} |
1324 |
} |
1325 |
g_free(buf); |
1326 |
g_free(reqs); |
1327 |
g_free(qiovs); |
1328 |
return 0; |
1329 |
} |
1330 |
|
1331 |
struct aio_ctx {
|
1332 |
QEMUIOVector qiov; |
1333 |
int64_t offset; |
1334 |
char *buf;
|
1335 |
int qflag;
|
1336 |
int vflag;
|
1337 |
int Cflag;
|
1338 |
int Pflag;
|
1339 |
int pattern;
|
1340 |
struct timeval t1;
|
1341 |
}; |
1342 |
|
1343 |
static void aio_write_done(void *opaque, int ret) |
1344 |
{ |
1345 |
struct aio_ctx *ctx = opaque;
|
1346 |
struct timeval t2;
|
1347 |
|
1348 |
gettimeofday(&t2, NULL);
|
1349 |
|
1350 |
|
1351 |
if (ret < 0) { |
1352 |
printf("aio_write failed: %s\n", strerror(-ret));
|
1353 |
goto out;
|
1354 |
} |
1355 |
|
1356 |
if (ctx->qflag) {
|
1357 |
goto out;
|
1358 |
} |
1359 |
|
1360 |
/* Finally, report back -- -C gives a parsable format */
|
1361 |
t2 = tsub(t2, ctx->t1); |
1362 |
print_report("wrote", &t2, ctx->offset, ctx->qiov.size,
|
1363 |
ctx->qiov.size, 1, ctx->Cflag);
|
1364 |
out:
|
1365 |
qemu_io_free(ctx->buf); |
1366 |
qemu_iovec_destroy(&ctx->qiov); |
1367 |
g_free(ctx); |
1368 |
} |
1369 |
|
1370 |
static void aio_read_done(void *opaque, int ret) |
1371 |
{ |
1372 |
struct aio_ctx *ctx = opaque;
|
1373 |
struct timeval t2;
|
1374 |
|
1375 |
gettimeofday(&t2, NULL);
|
1376 |
|
1377 |
if (ret < 0) { |
1378 |
printf("readv failed: %s\n", strerror(-ret));
|
1379 |
goto out;
|
1380 |
} |
1381 |
|
1382 |
if (ctx->Pflag) {
|
1383 |
void *cmp_buf = g_malloc(ctx->qiov.size);
|
1384 |
|
1385 |
memset(cmp_buf, ctx->pattern, ctx->qiov.size); |
1386 |
if (memcmp(ctx->buf, cmp_buf, ctx->qiov.size)) {
|
1387 |
printf("Pattern verification failed at offset %"
|
1388 |
PRId64 ", %zd bytes\n", ctx->offset, ctx->qiov.size);
|
1389 |
} |
1390 |
g_free(cmp_buf); |
1391 |
} |
1392 |
|
1393 |
if (ctx->qflag) {
|
1394 |
goto out;
|
1395 |
} |
1396 |
|
1397 |
if (ctx->vflag) {
|
1398 |
dump_buffer(ctx->buf, ctx->offset, ctx->qiov.size); |
1399 |
} |
1400 |
|
1401 |
/* Finally, report back -- -C gives a parsable format */
|
1402 |
t2 = tsub(t2, ctx->t1); |
1403 |
print_report("read", &t2, ctx->offset, ctx->qiov.size,
|
1404 |
ctx->qiov.size, 1, ctx->Cflag);
|
1405 |
out:
|
1406 |
qemu_io_free(ctx->buf); |
1407 |
qemu_iovec_destroy(&ctx->qiov); |
1408 |
g_free(ctx); |
1409 |
} |
1410 |
|
1411 |
static void aio_read_help(void) |
1412 |
{ |
1413 |
printf( |
1414 |
"\n"
|
1415 |
" asynchronously reads a range of bytes from the given offset\n"
|
1416 |
"\n"
|
1417 |
" Example:\n"
|
1418 |
" 'aio_read -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n"
|
1419 |
"\n"
|
1420 |
" Reads a segment of the currently open file, optionally dumping it to the\n"
|
1421 |
" standard output stream (with -v option) for subsequent inspection.\n"
|
1422 |
" The read is performed asynchronously and the aio_flush command must be\n"
|
1423 |
" used to ensure all outstanding aio requests have been completed.\n"
|
1424 |
" -C, -- report statistics in a machine parsable format\n"
|
1425 |
" -P, -- use a pattern to verify read data\n"
|
1426 |
" -v, -- dump buffer to standard output\n"
|
1427 |
" -q, -- quiet mode, do not show I/O statistics\n"
|
1428 |
"\n");
|
1429 |
} |
1430 |
|
1431 |
static int aio_read_f(BlockDriverState *bs, int argc, char **argv); |
1432 |
|
1433 |
static const cmdinfo_t aio_read_cmd = { |
1434 |
.name = "aio_read",
|
1435 |
.cfunc = aio_read_f, |
1436 |
.argmin = 2,
|
1437 |
.argmax = -1,
|
1438 |
.args = "[-Cqv] [-P pattern ] off len [len..]",
|
1439 |
.oneline = "asynchronously reads a number of bytes",
|
1440 |
.help = aio_read_help, |
1441 |
}; |
1442 |
|
1443 |
static int aio_read_f(BlockDriverState *bs, int argc, char **argv) |
1444 |
{ |
1445 |
int nr_iov, c;
|
1446 |
struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); |
1447 |
|
1448 |
while ((c = getopt(argc, argv, "CP:qv")) != EOF) { |
1449 |
switch (c) {
|
1450 |
case 'C': |
1451 |
ctx->Cflag = 1;
|
1452 |
break;
|
1453 |
case 'P': |
1454 |
ctx->Pflag = 1;
|
1455 |
ctx->pattern = parse_pattern(optarg); |
1456 |
if (ctx->pattern < 0) { |
1457 |
g_free(ctx); |
1458 |
return 0; |
1459 |
} |
1460 |
break;
|
1461 |
case 'q': |
1462 |
ctx->qflag = 1;
|
1463 |
break;
|
1464 |
case 'v': |
1465 |
ctx->vflag = 1;
|
1466 |
break;
|
1467 |
default:
|
1468 |
g_free(ctx); |
1469 |
return qemuio_command_usage(&aio_read_cmd);
|
1470 |
} |
1471 |
} |
1472 |
|
1473 |
if (optind > argc - 2) { |
1474 |
g_free(ctx); |
1475 |
return qemuio_command_usage(&aio_read_cmd);
|
1476 |
} |
1477 |
|
1478 |
ctx->offset = cvtnum(argv[optind]); |
1479 |
if (ctx->offset < 0) { |
1480 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
1481 |
g_free(ctx); |
1482 |
return 0; |
1483 |
} |
1484 |
optind++; |
1485 |
|
1486 |
if (ctx->offset & 0x1ff) { |
1487 |
printf("offset %" PRId64 " is not sector aligned\n", |
1488 |
ctx->offset); |
1489 |
g_free(ctx); |
1490 |
return 0; |
1491 |
} |
1492 |
|
1493 |
nr_iov = argc - optind; |
1494 |
ctx->buf = create_iovec(bs, &ctx->qiov, &argv[optind], nr_iov, 0xab);
|
1495 |
if (ctx->buf == NULL) { |
1496 |
g_free(ctx); |
1497 |
return 0; |
1498 |
} |
1499 |
|
1500 |
gettimeofday(&ctx->t1, NULL);
|
1501 |
bdrv_aio_readv(bs, ctx->offset >> 9, &ctx->qiov,
|
1502 |
ctx->qiov.size >> 9, aio_read_done, ctx);
|
1503 |
return 0; |
1504 |
} |
1505 |
|
1506 |
static void aio_write_help(void) |
1507 |
{ |
1508 |
printf( |
1509 |
"\n"
|
1510 |
" asynchronously writes a range of bytes from the given offset source\n"
|
1511 |
" from multiple buffers\n"
|
1512 |
"\n"
|
1513 |
" Example:\n"
|
1514 |
" 'aio_write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
|
1515 |
"\n"
|
1516 |
" Writes into a segment of the currently open file, using a buffer\n"
|
1517 |
" filled with a set pattern (0xcdcdcdcd).\n"
|
1518 |
" The write is performed asynchronously and the aio_flush command must be\n"
|
1519 |
" used to ensure all outstanding aio requests have been completed.\n"
|
1520 |
" -P, -- use different pattern to fill file\n"
|
1521 |
" -C, -- report statistics in a machine parsable format\n"
|
1522 |
" -q, -- quiet mode, do not show I/O statistics\n"
|
1523 |
"\n");
|
1524 |
} |
1525 |
|
1526 |
static int aio_write_f(BlockDriverState *bs, int argc, char **argv); |
1527 |
|
1528 |
static const cmdinfo_t aio_write_cmd = { |
1529 |
.name = "aio_write",
|
1530 |
.cfunc = aio_write_f, |
1531 |
.argmin = 2,
|
1532 |
.argmax = -1,
|
1533 |
.args = "[-Cq] [-P pattern ] off len [len..]",
|
1534 |
.oneline = "asynchronously writes a number of bytes",
|
1535 |
.help = aio_write_help, |
1536 |
}; |
1537 |
|
1538 |
static int aio_write_f(BlockDriverState *bs, int argc, char **argv) |
1539 |
{ |
1540 |
int nr_iov, c;
|
1541 |
int pattern = 0xcd; |
1542 |
struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); |
1543 |
|
1544 |
while ((c = getopt(argc, argv, "CqP:")) != EOF) { |
1545 |
switch (c) {
|
1546 |
case 'C': |
1547 |
ctx->Cflag = 1;
|
1548 |
break;
|
1549 |
case 'q': |
1550 |
ctx->qflag = 1;
|
1551 |
break;
|
1552 |
case 'P': |
1553 |
pattern = parse_pattern(optarg); |
1554 |
if (pattern < 0) { |
1555 |
g_free(ctx); |
1556 |
return 0; |
1557 |
} |
1558 |
break;
|
1559 |
default:
|
1560 |
g_free(ctx); |
1561 |
return qemuio_command_usage(&aio_write_cmd);
|
1562 |
} |
1563 |
} |
1564 |
|
1565 |
if (optind > argc - 2) { |
1566 |
g_free(ctx); |
1567 |
return qemuio_command_usage(&aio_write_cmd);
|
1568 |
} |
1569 |
|
1570 |
ctx->offset = cvtnum(argv[optind]); |
1571 |
if (ctx->offset < 0) { |
1572 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
1573 |
g_free(ctx); |
1574 |
return 0; |
1575 |
} |
1576 |
optind++; |
1577 |
|
1578 |
if (ctx->offset & 0x1ff) { |
1579 |
printf("offset %" PRId64 " is not sector aligned\n", |
1580 |
ctx->offset); |
1581 |
g_free(ctx); |
1582 |
return 0; |
1583 |
} |
1584 |
|
1585 |
nr_iov = argc - optind; |
1586 |
ctx->buf = create_iovec(bs, &ctx->qiov, &argv[optind], nr_iov, pattern); |
1587 |
if (ctx->buf == NULL) { |
1588 |
g_free(ctx); |
1589 |
return 0; |
1590 |
} |
1591 |
|
1592 |
gettimeofday(&ctx->t1, NULL);
|
1593 |
bdrv_aio_writev(bs, ctx->offset >> 9, &ctx->qiov,
|
1594 |
ctx->qiov.size >> 9, aio_write_done, ctx);
|
1595 |
return 0; |
1596 |
} |
1597 |
|
1598 |
static int aio_flush_f(BlockDriverState *bs, int argc, char **argv) |
1599 |
{ |
1600 |
bdrv_drain_all(); |
1601 |
return 0; |
1602 |
} |
1603 |
|
1604 |
static const cmdinfo_t aio_flush_cmd = { |
1605 |
.name = "aio_flush",
|
1606 |
.cfunc = aio_flush_f, |
1607 |
.oneline = "completes all outstanding aio requests"
|
1608 |
}; |
1609 |
|
1610 |
static int flush_f(BlockDriverState *bs, int argc, char **argv) |
1611 |
{ |
1612 |
bdrv_flush(bs); |
1613 |
return 0; |
1614 |
} |
1615 |
|
1616 |
static const cmdinfo_t flush_cmd = { |
1617 |
.name = "flush",
|
1618 |
.altname = "f",
|
1619 |
.cfunc = flush_f, |
1620 |
.oneline = "flush all in-core file state to disk",
|
1621 |
}; |
1622 |
|
1623 |
static int truncate_f(BlockDriverState *bs, int argc, char **argv) |
1624 |
{ |
1625 |
int64_t offset; |
1626 |
int ret;
|
1627 |
|
1628 |
offset = cvtnum(argv[1]);
|
1629 |
if (offset < 0) { |
1630 |
printf("non-numeric truncate argument -- %s\n", argv[1]); |
1631 |
return 0; |
1632 |
} |
1633 |
|
1634 |
ret = bdrv_truncate(bs, offset); |
1635 |
if (ret < 0) { |
1636 |
printf("truncate: %s\n", strerror(-ret));
|
1637 |
return 0; |
1638 |
} |
1639 |
|
1640 |
return 0; |
1641 |
} |
1642 |
|
1643 |
static const cmdinfo_t truncate_cmd = { |
1644 |
.name = "truncate",
|
1645 |
.altname = "t",
|
1646 |
.cfunc = truncate_f, |
1647 |
.argmin = 1,
|
1648 |
.argmax = 1,
|
1649 |
.args = "off",
|
1650 |
.oneline = "truncates the current file at the given offset",
|
1651 |
}; |
1652 |
|
1653 |
static int length_f(BlockDriverState *bs, int argc, char **argv) |
1654 |
{ |
1655 |
int64_t size; |
1656 |
char s1[64]; |
1657 |
|
1658 |
size = bdrv_getlength(bs); |
1659 |
if (size < 0) { |
1660 |
printf("getlength: %s\n", strerror(-size));
|
1661 |
return 0; |
1662 |
} |
1663 |
|
1664 |
cvtstr(size, s1, sizeof(s1));
|
1665 |
printf("%s\n", s1);
|
1666 |
return 0; |
1667 |
} |
1668 |
|
1669 |
|
1670 |
static const cmdinfo_t length_cmd = { |
1671 |
.name = "length",
|
1672 |
.altname = "l",
|
1673 |
.cfunc = length_f, |
1674 |
.oneline = "gets the length of the current file",
|
1675 |
}; |
1676 |
|
1677 |
|
1678 |
static int info_f(BlockDriverState *bs, int argc, char **argv) |
1679 |
{ |
1680 |
BlockDriverInfo bdi; |
1681 |
char s1[64], s2[64]; |
1682 |
int ret;
|
1683 |
|
1684 |
if (bs->drv && bs->drv->format_name) {
|
1685 |
printf("format name: %s\n", bs->drv->format_name);
|
1686 |
} |
1687 |
if (bs->drv && bs->drv->protocol_name) {
|
1688 |
printf("format name: %s\n", bs->drv->protocol_name);
|
1689 |
} |
1690 |
|
1691 |
ret = bdrv_get_info(bs, &bdi); |
1692 |
if (ret) {
|
1693 |
return 0; |
1694 |
} |
1695 |
|
1696 |
cvtstr(bdi.cluster_size, s1, sizeof(s1));
|
1697 |
cvtstr(bdi.vm_state_offset, s2, sizeof(s2));
|
1698 |
|
1699 |
printf("cluster size: %s\n", s1);
|
1700 |
printf("vm state offset: %s\n", s2);
|
1701 |
|
1702 |
return 0; |
1703 |
} |
1704 |
|
1705 |
|
1706 |
|
1707 |
static const cmdinfo_t info_cmd = { |
1708 |
.name = "info",
|
1709 |
.altname = "i",
|
1710 |
.cfunc = info_f, |
1711 |
.oneline = "prints information about the current file",
|
1712 |
}; |
1713 |
|
1714 |
static void discard_help(void) |
1715 |
{ |
1716 |
printf( |
1717 |
"\n"
|
1718 |
" discards a range of bytes from the given offset\n"
|
1719 |
"\n"
|
1720 |
" Example:\n"
|
1721 |
" 'discard 512 1k' - discards 1 kilobyte from 512 bytes into the file\n"
|
1722 |
"\n"
|
1723 |
" Discards a segment of the currently open file.\n"
|
1724 |
" -C, -- report statistics in a machine parsable format\n"
|
1725 |
" -q, -- quiet mode, do not show I/O statistics\n"
|
1726 |
"\n");
|
1727 |
} |
1728 |
|
1729 |
static int discard_f(BlockDriverState *bs, int argc, char **argv); |
1730 |
|
1731 |
static const cmdinfo_t discard_cmd = { |
1732 |
.name = "discard",
|
1733 |
.altname = "d",
|
1734 |
.cfunc = discard_f, |
1735 |
.argmin = 2,
|
1736 |
.argmax = -1,
|
1737 |
.args = "[-Cq] off len",
|
1738 |
.oneline = "discards a number of bytes at a specified offset",
|
1739 |
.help = discard_help, |
1740 |
}; |
1741 |
|
1742 |
static int discard_f(BlockDriverState *bs, int argc, char **argv) |
1743 |
{ |
1744 |
struct timeval t1, t2;
|
1745 |
int Cflag = 0, qflag = 0; |
1746 |
int c, ret;
|
1747 |
int64_t offset; |
1748 |
int count;
|
1749 |
|
1750 |
while ((c = getopt(argc, argv, "Cq")) != EOF) { |
1751 |
switch (c) {
|
1752 |
case 'C': |
1753 |
Cflag = 1;
|
1754 |
break;
|
1755 |
case 'q': |
1756 |
qflag = 1;
|
1757 |
break;
|
1758 |
default:
|
1759 |
return qemuio_command_usage(&discard_cmd);
|
1760 |
} |
1761 |
} |
1762 |
|
1763 |
if (optind != argc - 2) { |
1764 |
return qemuio_command_usage(&discard_cmd);
|
1765 |
} |
1766 |
|
1767 |
offset = cvtnum(argv[optind]); |
1768 |
if (offset < 0) { |
1769 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
1770 |
return 0; |
1771 |
} |
1772 |
|
1773 |
optind++; |
1774 |
count = cvtnum(argv[optind]); |
1775 |
if (count < 0) { |
1776 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
1777 |
return 0; |
1778 |
} |
1779 |
|
1780 |
gettimeofday(&t1, NULL);
|
1781 |
ret = bdrv_discard(bs, offset >> BDRV_SECTOR_BITS, |
1782 |
count >> BDRV_SECTOR_BITS); |
1783 |
gettimeofday(&t2, NULL);
|
1784 |
|
1785 |
if (ret < 0) { |
1786 |
printf("discard failed: %s\n", strerror(-ret));
|
1787 |
goto out;
|
1788 |
} |
1789 |
|
1790 |
/* Finally, report back -- -C gives a parsable format */
|
1791 |
if (!qflag) {
|
1792 |
t2 = tsub(t2, t1); |
1793 |
print_report("discard", &t2, offset, count, count, 1, Cflag); |
1794 |
} |
1795 |
|
1796 |
out:
|
1797 |
return 0; |
1798 |
} |
1799 |
|
1800 |
static int alloc_f(BlockDriverState *bs, int argc, char **argv) |
1801 |
{ |
1802 |
int64_t offset, sector_num; |
1803 |
int nb_sectors, remaining;
|
1804 |
char s1[64]; |
1805 |
int num, sum_alloc;
|
1806 |
int ret;
|
1807 |
|
1808 |
offset = cvtnum(argv[1]);
|
1809 |
if (offset < 0) { |
1810 |
printf("non-numeric offset argument -- %s\n", argv[1]); |
1811 |
return 0; |
1812 |
} else if (offset & 0x1ff) { |
1813 |
printf("offset %" PRId64 " is not sector aligned\n", |
1814 |
offset); |
1815 |
return 0; |
1816 |
} |
1817 |
|
1818 |
if (argc == 3) { |
1819 |
nb_sectors = cvtnum(argv[2]);
|
1820 |
if (nb_sectors < 0) { |
1821 |
printf("non-numeric length argument -- %s\n", argv[2]); |
1822 |
return 0; |
1823 |
} |
1824 |
} else {
|
1825 |
nb_sectors = 1;
|
1826 |
} |
1827 |
|
1828 |
remaining = nb_sectors; |
1829 |
sum_alloc = 0;
|
1830 |
sector_num = offset >> 9;
|
1831 |
while (remaining) {
|
1832 |
ret = bdrv_is_allocated(bs, sector_num, remaining, &num); |
1833 |
sector_num += num; |
1834 |
remaining -= num; |
1835 |
if (ret) {
|
1836 |
sum_alloc += num; |
1837 |
} |
1838 |
if (num == 0) { |
1839 |
nb_sectors -= remaining; |
1840 |
remaining = 0;
|
1841 |
} |
1842 |
} |
1843 |
|
1844 |
cvtstr(offset, s1, sizeof(s1));
|
1845 |
|
1846 |
printf("%d/%d sectors allocated at offset %s\n",
|
1847 |
sum_alloc, nb_sectors, s1); |
1848 |
return 0; |
1849 |
} |
1850 |
|
1851 |
static const cmdinfo_t alloc_cmd = { |
1852 |
.name = "alloc",
|
1853 |
.altname = "a",
|
1854 |
.argmin = 1,
|
1855 |
.argmax = 2,
|
1856 |
.cfunc = alloc_f, |
1857 |
.args = "off [sectors]",
|
1858 |
.oneline = "checks if a sector is present in the file",
|
1859 |
}; |
1860 |
|
1861 |
|
1862 |
static int map_is_allocated(BlockDriverState *bs, int64_t sector_num, |
1863 |
int64_t nb_sectors, int64_t *pnum) |
1864 |
{ |
1865 |
int num, num_checked;
|
1866 |
int ret, firstret;
|
1867 |
|
1868 |
num_checked = MIN(nb_sectors, INT_MAX); |
1869 |
ret = bdrv_is_allocated(bs, sector_num, num_checked, &num); |
1870 |
if (ret < 0) { |
1871 |
return ret;
|
1872 |
} |
1873 |
|
1874 |
firstret = ret; |
1875 |
*pnum = num; |
1876 |
|
1877 |
while (nb_sectors > 0 && ret == firstret) { |
1878 |
sector_num += num; |
1879 |
nb_sectors -= num; |
1880 |
|
1881 |
num_checked = MIN(nb_sectors, INT_MAX); |
1882 |
ret = bdrv_is_allocated(bs, sector_num, num_checked, &num); |
1883 |
if (ret == firstret) {
|
1884 |
*pnum += num; |
1885 |
} else {
|
1886 |
break;
|
1887 |
} |
1888 |
} |
1889 |
|
1890 |
return firstret;
|
1891 |
} |
1892 |
|
1893 |
static int map_f(BlockDriverState *bs, int argc, char **argv) |
1894 |
{ |
1895 |
int64_t offset; |
1896 |
int64_t nb_sectors; |
1897 |
char s1[64]; |
1898 |
int64_t num; |
1899 |
int ret;
|
1900 |
const char *retstr; |
1901 |
|
1902 |
offset = 0;
|
1903 |
nb_sectors = bs->total_sectors; |
1904 |
|
1905 |
do {
|
1906 |
ret = map_is_allocated(bs, offset, nb_sectors, &num); |
1907 |
if (ret < 0) { |
1908 |
error_report("Failed to get allocation status: %s", strerror(-ret));
|
1909 |
return 0; |
1910 |
} |
1911 |
|
1912 |
retstr = ret ? " allocated" : "not allocated"; |
1913 |
cvtstr(offset << 9ULL, s1, sizeof(s1)); |
1914 |
printf("[% 24" PRId64 "] % 8" PRId64 "/% 8" PRId64 " sectors %s " |
1915 |
"at offset %s (%d)\n",
|
1916 |
offset << 9ULL, num, nb_sectors, retstr, s1, ret);
|
1917 |
|
1918 |
offset += num; |
1919 |
nb_sectors -= num; |
1920 |
} while (offset < bs->total_sectors);
|
1921 |
|
1922 |
return 0; |
1923 |
} |
1924 |
|
1925 |
static const cmdinfo_t map_cmd = { |
1926 |
.name = "map",
|
1927 |
.argmin = 0,
|
1928 |
.argmax = 0,
|
1929 |
.cfunc = map_f, |
1930 |
.args = "",
|
1931 |
.oneline = "prints the allocated areas of a file",
|
1932 |
}; |
1933 |
|
1934 |
static int break_f(BlockDriverState *bs, int argc, char **argv) |
1935 |
{ |
1936 |
int ret;
|
1937 |
|
1938 |
ret = bdrv_debug_breakpoint(bs, argv[1], argv[2]); |
1939 |
if (ret < 0) { |
1940 |
printf("Could not set breakpoint: %s\n", strerror(-ret));
|
1941 |
} |
1942 |
|
1943 |
return 0; |
1944 |
} |
1945 |
|
1946 |
static const cmdinfo_t break_cmd = { |
1947 |
.name = "break",
|
1948 |
.argmin = 2,
|
1949 |
.argmax = 2,
|
1950 |
.cfunc = break_f, |
1951 |
.args = "event tag",
|
1952 |
.oneline = "sets a breakpoint on event and tags the stopped "
|
1953 |
"request as tag",
|
1954 |
}; |
1955 |
|
1956 |
static int resume_f(BlockDriverState *bs, int argc, char **argv) |
1957 |
{ |
1958 |
int ret;
|
1959 |
|
1960 |
ret = bdrv_debug_resume(bs, argv[1]);
|
1961 |
if (ret < 0) { |
1962 |
printf("Could not resume request: %s\n", strerror(-ret));
|
1963 |
} |
1964 |
|
1965 |
return 0; |
1966 |
} |
1967 |
|
1968 |
static const cmdinfo_t resume_cmd = { |
1969 |
.name = "resume",
|
1970 |
.argmin = 1,
|
1971 |
.argmax = 1,
|
1972 |
.cfunc = resume_f, |
1973 |
.args = "tag",
|
1974 |
.oneline = "resumes the request tagged as tag",
|
1975 |
}; |
1976 |
|
1977 |
static int wait_break_f(BlockDriverState *bs, int argc, char **argv) |
1978 |
{ |
1979 |
while (!bdrv_debug_is_suspended(bs, argv[1])) { |
1980 |
qemu_aio_wait(); |
1981 |
} |
1982 |
|
1983 |
return 0; |
1984 |
} |
1985 |
|
1986 |
static const cmdinfo_t wait_break_cmd = { |
1987 |
.name = "wait_break",
|
1988 |
.argmin = 1,
|
1989 |
.argmax = 1,
|
1990 |
.cfunc = wait_break_f, |
1991 |
.args = "tag",
|
1992 |
.oneline = "waits for the suspension of a request",
|
1993 |
}; |
1994 |
|
1995 |
static int abort_f(BlockDriverState *bs, int argc, char **argv) |
1996 |
{ |
1997 |
abort(); |
1998 |
} |
1999 |
|
2000 |
static const cmdinfo_t abort_cmd = { |
2001 |
.name = "abort",
|
2002 |
.cfunc = abort_f, |
2003 |
.flags = CMD_NOFILE_OK, |
2004 |
.oneline = "simulate a program crash using abort(3)",
|
2005 |
}; |
2006 |
|
2007 |
static void help_oneline(const char *cmd, const cmdinfo_t *ct) |
2008 |
{ |
2009 |
if (cmd) {
|
2010 |
printf("%s ", cmd);
|
2011 |
} else {
|
2012 |
printf("%s ", ct->name);
|
2013 |
if (ct->altname) {
|
2014 |
printf("(or %s) ", ct->altname);
|
2015 |
} |
2016 |
} |
2017 |
|
2018 |
if (ct->args) {
|
2019 |
printf("%s ", ct->args);
|
2020 |
} |
2021 |
printf("-- %s\n", ct->oneline);
|
2022 |
} |
2023 |
|
2024 |
static void help_onecmd(const char *cmd, const cmdinfo_t *ct) |
2025 |
{ |
2026 |
help_oneline(cmd, ct); |
2027 |
if (ct->help) {
|
2028 |
ct->help(); |
2029 |
} |
2030 |
} |
2031 |
|
2032 |
static void help_all(void) |
2033 |
{ |
2034 |
const cmdinfo_t *ct;
|
2035 |
|
2036 |
for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) {
|
2037 |
help_oneline(ct->name, ct); |
2038 |
} |
2039 |
printf("\nUse 'help commandname' for extended help.\n");
|
2040 |
} |
2041 |
|
2042 |
static int help_f(BlockDriverState *bs, int argc, char **argv) |
2043 |
{ |
2044 |
const cmdinfo_t *ct;
|
2045 |
|
2046 |
if (argc == 1) { |
2047 |
help_all(); |
2048 |
return 0; |
2049 |
} |
2050 |
|
2051 |
ct = find_command(argv[1]);
|
2052 |
if (ct == NULL) { |
2053 |
printf("command %s not found\n", argv[1]); |
2054 |
return 0; |
2055 |
} |
2056 |
|
2057 |
help_onecmd(argv[1], ct);
|
2058 |
return 0; |
2059 |
} |
2060 |
|
2061 |
static const cmdinfo_t help_cmd = { |
2062 |
.name = "help",
|
2063 |
.altname = "?",
|
2064 |
.cfunc = help_f, |
2065 |
.argmin = 0,
|
2066 |
.argmax = 1,
|
2067 |
.flags = CMD_FLAG_GLOBAL, |
2068 |
.args = "[command]",
|
2069 |
.oneline = "help for one or all commands",
|
2070 |
}; |
2071 |
|
2072 |
bool qemuio_command(BlockDriverState *bs, const char *cmd) |
2073 |
{ |
2074 |
char *input;
|
2075 |
const cmdinfo_t *ct;
|
2076 |
char **v;
|
2077 |
int c;
|
2078 |
bool done = false; |
2079 |
|
2080 |
input = g_strdup(cmd); |
2081 |
v = breakline(input, &c); |
2082 |
if (c) {
|
2083 |
ct = find_command(v[0]);
|
2084 |
if (ct) {
|
2085 |
done = command(bs, ct, c, v); |
2086 |
} else {
|
2087 |
fprintf(stderr, "command \"%s\" not found\n", v[0]); |
2088 |
} |
2089 |
} |
2090 |
g_free(input); |
2091 |
g_free(v); |
2092 |
|
2093 |
return done;
|
2094 |
} |
2095 |
|
2096 |
static void __attribute((constructor)) init_qemuio_commands(void) |
2097 |
{ |
2098 |
/* initialize commands */
|
2099 |
qemuio_add_command(&help_cmd); |
2100 |
qemuio_add_command(&read_cmd); |
2101 |
qemuio_add_command(&readv_cmd); |
2102 |
qemuio_add_command(&write_cmd); |
2103 |
qemuio_add_command(&writev_cmd); |
2104 |
qemuio_add_command(&multiwrite_cmd); |
2105 |
qemuio_add_command(&aio_read_cmd); |
2106 |
qemuio_add_command(&aio_write_cmd); |
2107 |
qemuio_add_command(&aio_flush_cmd); |
2108 |
qemuio_add_command(&flush_cmd); |
2109 |
qemuio_add_command(&truncate_cmd); |
2110 |
qemuio_add_command(&length_cmd); |
2111 |
qemuio_add_command(&info_cmd); |
2112 |
qemuio_add_command(&discard_cmd); |
2113 |
qemuio_add_command(&alloc_cmd); |
2114 |
qemuio_add_command(&map_cmd); |
2115 |
qemuio_add_command(&break_cmd); |
2116 |
qemuio_add_command(&resume_cmd); |
2117 |
qemuio_add_command(&wait_break_cmd); |
2118 |
qemuio_add_command(&abort_cmd); |
2119 |
} |