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1 | e3aff4f6 | aliguori | /*
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2 | e3aff4f6 | aliguori | * Command line utility to exercise the QEMU I/O path.
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3 | e3aff4f6 | aliguori | *
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4 | e3aff4f6 | aliguori | * Copyright (C) 2009 Red Hat, Inc.
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5 | e3aff4f6 | aliguori | * Copyright (c) 2003-2005 Silicon Graphics, Inc.
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6 | e3aff4f6 | aliguori | *
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7 | e3aff4f6 | aliguori | * This work is licensed under the terms of the GNU GPL, version 2 or later.
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8 | e3aff4f6 | aliguori | * See the COPYING file in the top-level directory.
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9 | e3aff4f6 | aliguori | */
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10 | c32d766a | Stefan Weil | #include <sys/time.h> |
11 | e3aff4f6 | aliguori | #include <sys/types.h> |
12 | e3aff4f6 | aliguori | #include <stdarg.h> |
13 | e3aff4f6 | aliguori | #include <stdio.h> |
14 | e3aff4f6 | aliguori | #include <getopt.h> |
15 | c32d766a | Stefan Weil | #include <libgen.h> |
16 | e3aff4f6 | aliguori | |
17 | e3aff4f6 | aliguori | #include "qemu-common.h" |
18 | e3aff4f6 | aliguori | #include "block_int.h" |
19 | e3aff4f6 | aliguori | #include "cmd.h" |
20 | e3aff4f6 | aliguori | |
21 | e3aff4f6 | aliguori | #define VERSION "0.0.1" |
22 | e3aff4f6 | aliguori | |
23 | e3aff4f6 | aliguori | #define CMD_NOFILE_OK 0x01 |
24 | e3aff4f6 | aliguori | |
25 | e3aff4f6 | aliguori | char *progname;
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26 | e3aff4f6 | aliguori | static BlockDriverState *bs;
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27 | e3aff4f6 | aliguori | |
28 | e3aff4f6 | aliguori | static int misalign; |
29 | e3aff4f6 | aliguori | |
30 | e3aff4f6 | aliguori | /*
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31 | cf070d7e | Christoph Hellwig | * Parse the pattern argument to various sub-commands.
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32 | cf070d7e | Christoph Hellwig | *
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33 | cf070d7e | Christoph Hellwig | * Because the pattern is used as an argument to memset it must evaluate
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34 | cf070d7e | Christoph Hellwig | * to an unsigned integer that fits into a single byte.
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35 | cf070d7e | Christoph Hellwig | */
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36 | cf070d7e | Christoph Hellwig | static int parse_pattern(const char *arg) |
37 | cf070d7e | Christoph Hellwig | { |
38 | cf070d7e | Christoph Hellwig | char *endptr = NULL; |
39 | cf070d7e | Christoph Hellwig | long pattern;
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40 | cf070d7e | Christoph Hellwig | |
41 | cf070d7e | Christoph Hellwig | pattern = strtol(arg, &endptr, 0);
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42 | cf070d7e | Christoph Hellwig | if (pattern < 0 || pattern > UCHAR_MAX || *endptr != '\0') { |
43 | cf070d7e | Christoph Hellwig | printf("%s is not a valid pattern byte\n", arg);
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44 | cf070d7e | Christoph Hellwig | return -1; |
45 | cf070d7e | Christoph Hellwig | } |
46 | cf070d7e | Christoph Hellwig | |
47 | cf070d7e | Christoph Hellwig | return pattern;
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48 | cf070d7e | Christoph Hellwig | } |
49 | cf070d7e | Christoph Hellwig | |
50 | cf070d7e | Christoph Hellwig | /*
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51 | e3aff4f6 | aliguori | * Memory allocation helpers.
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52 | e3aff4f6 | aliguori | *
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53 | e3aff4f6 | aliguori | * Make sure memory is aligned by default, or purposefully misaligned if
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54 | e3aff4f6 | aliguori | * that is specified on the command line.
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55 | e3aff4f6 | aliguori | */
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56 | e3aff4f6 | aliguori | |
57 | e3aff4f6 | aliguori | #define MISALIGN_OFFSET 16 |
58 | e3aff4f6 | aliguori | static void *qemu_io_alloc(size_t len, int pattern) |
59 | e3aff4f6 | aliguori | { |
60 | e3aff4f6 | aliguori | void *buf;
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61 | e3aff4f6 | aliguori | |
62 | e3aff4f6 | aliguori | if (misalign)
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63 | e3aff4f6 | aliguori | len += MISALIGN_OFFSET; |
64 | 72aef731 | Christoph Hellwig | buf = qemu_blockalign(bs, len); |
65 | e3aff4f6 | aliguori | memset(buf, pattern, len); |
66 | e3aff4f6 | aliguori | if (misalign)
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67 | e3aff4f6 | aliguori | buf += MISALIGN_OFFSET; |
68 | e3aff4f6 | aliguori | return buf;
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69 | e3aff4f6 | aliguori | } |
70 | e3aff4f6 | aliguori | |
71 | e3aff4f6 | aliguori | static void qemu_io_free(void *p) |
72 | e3aff4f6 | aliguori | { |
73 | e3aff4f6 | aliguori | if (misalign)
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74 | e3aff4f6 | aliguori | p -= MISALIGN_OFFSET; |
75 | e3aff4f6 | aliguori | qemu_vfree(p); |
76 | e3aff4f6 | aliguori | } |
77 | e3aff4f6 | aliguori | |
78 | e3aff4f6 | aliguori | static void |
79 | 3abcdf49 | Stefan Weil | dump_buffer(const void *buffer, int64_t offset, int len) |
80 | e3aff4f6 | aliguori | { |
81 | e3aff4f6 | aliguori | int i, j;
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82 | 3abcdf49 | Stefan Weil | const uint8_t *p;
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83 | e3aff4f6 | aliguori | |
84 | e3aff4f6 | aliguori | for (i = 0, p = buffer; i < len; i += 16) { |
85 | 3abcdf49 | Stefan Weil | const uint8_t *s = p;
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86 | e3aff4f6 | aliguori | |
87 | 0bfcd599 | Blue Swirl | printf("%08" PRIx64 ": ", offset + i); |
88 | e3aff4f6 | aliguori | for (j = 0; j < 16 && i + j < len; j++, p++) |
89 | e3aff4f6 | aliguori | printf("%02x ", *p);
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90 | e3aff4f6 | aliguori | printf(" ");
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91 | e3aff4f6 | aliguori | for (j = 0; j < 16 && i + j < len; j++, s++) { |
92 | 3abcdf49 | Stefan Weil | if (isalnum(*s))
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93 | e3aff4f6 | aliguori | printf("%c", *s);
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94 | e3aff4f6 | aliguori | else
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95 | e3aff4f6 | aliguori | printf(".");
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96 | e3aff4f6 | aliguori | } |
97 | e3aff4f6 | aliguori | printf("\n");
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98 | e3aff4f6 | aliguori | } |
99 | e3aff4f6 | aliguori | } |
100 | e3aff4f6 | aliguori | |
101 | e3aff4f6 | aliguori | static void |
102 | e3aff4f6 | aliguori | print_report(const char *op, struct timeval *t, int64_t offset, |
103 | e3aff4f6 | aliguori | int count, int total, int cnt, int Cflag) |
104 | e3aff4f6 | aliguori | { |
105 | e3aff4f6 | aliguori | char s1[64], s2[64], ts[64]; |
106 | e3aff4f6 | aliguori | |
107 | e3aff4f6 | aliguori | timestr(t, ts, sizeof(ts), Cflag ? VERBOSE_FIXED_TIME : 0); |
108 | e3aff4f6 | aliguori | if (!Cflag) {
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109 | e3aff4f6 | aliguori | cvtstr((double)total, s1, sizeof(s1)); |
110 | e3aff4f6 | aliguori | cvtstr(tdiv((double)total, *t), s2, sizeof(s2)); |
111 | 0bfcd599 | Blue Swirl | printf("%s %d/%d bytes at offset %" PRId64 "\n", |
112 | 0bfcd599 | Blue Swirl | op, total, count, offset); |
113 | e3aff4f6 | aliguori | printf("%s, %d ops; %s (%s/sec and %.4f ops/sec)\n",
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114 | e3aff4f6 | aliguori | s1, cnt, ts, s2, tdiv((double)cnt, *t));
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115 | e3aff4f6 | aliguori | } else {/* bytes,ops,time,bytes/sec,ops/sec */ |
116 | e3aff4f6 | aliguori | printf("%d,%d,%s,%.3f,%.3f\n",
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117 | e3aff4f6 | aliguori | total, cnt, ts, |
118 | e3aff4f6 | aliguori | tdiv((double)total, *t),
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119 | e3aff4f6 | aliguori | tdiv((double)cnt, *t));
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120 | e3aff4f6 | aliguori | } |
121 | e3aff4f6 | aliguori | } |
122 | e3aff4f6 | aliguori | |
123 | cf57298a | Christoph Hellwig | /*
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124 | cf57298a | Christoph Hellwig | * Parse multiple length statements for vectored I/O, and construct an I/O
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125 | cf57298a | Christoph Hellwig | * vector matching it.
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126 | cf57298a | Christoph Hellwig | */
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127 | cf57298a | Christoph Hellwig | static void * |
128 | cf57298a | Christoph Hellwig | create_iovec(QEMUIOVector *qiov, char **argv, int nr_iov, int pattern) |
129 | cf57298a | Christoph Hellwig | { |
130 | cf57298a | Christoph Hellwig | size_t *sizes = calloc(nr_iov, sizeof(size_t));
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131 | cf57298a | Christoph Hellwig | size_t count = 0;
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132 | 40a0d7c3 | Kevin Wolf | void *buf = NULL; |
133 | 40a0d7c3 | Kevin Wolf | void *p;
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134 | cf57298a | Christoph Hellwig | int i;
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135 | cf57298a | Christoph Hellwig | |
136 | cf57298a | Christoph Hellwig | for (i = 0; i < nr_iov; i++) { |
137 | cf57298a | Christoph Hellwig | char *arg = argv[i];
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138 | ca1d6ac6 | Joel Schopp | int64_t len; |
139 | cf57298a | Christoph Hellwig | |
140 | cf57298a | Christoph Hellwig | len = cvtnum(arg); |
141 | cf57298a | Christoph Hellwig | if (len < 0) { |
142 | cf57298a | Christoph Hellwig | printf("non-numeric length argument -- %s\n", arg);
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143 | 40a0d7c3 | Kevin Wolf | goto fail;
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144 | cf57298a | Christoph Hellwig | } |
145 | cf57298a | Christoph Hellwig | |
146 | cf57298a | Christoph Hellwig | /* should be SIZE_T_MAX, but that doesn't exist */
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147 | ca1d6ac6 | Joel Schopp | if (len > INT_MAX) {
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148 | cf57298a | Christoph Hellwig | printf("too large length argument -- %s\n", arg);
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149 | 40a0d7c3 | Kevin Wolf | goto fail;
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150 | cf57298a | Christoph Hellwig | } |
151 | cf57298a | Christoph Hellwig | |
152 | cf57298a | Christoph Hellwig | if (len & 0x1ff) { |
153 | 0bfcd599 | Blue Swirl | printf("length argument %" PRId64
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154 | 0bfcd599 | Blue Swirl | " is not sector aligned\n", len);
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155 | 40a0d7c3 | Kevin Wolf | goto fail;
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156 | cf57298a | Christoph Hellwig | } |
157 | cf57298a | Christoph Hellwig | |
158 | cf57298a | Christoph Hellwig | sizes[i] = len; |
159 | cf57298a | Christoph Hellwig | count += len; |
160 | cf57298a | Christoph Hellwig | } |
161 | cf57298a | Christoph Hellwig | |
162 | cf57298a | Christoph Hellwig | qemu_iovec_init(qiov, nr_iov); |
163 | cf57298a | Christoph Hellwig | |
164 | cf57298a | Christoph Hellwig | buf = p = qemu_io_alloc(count, pattern); |
165 | cf57298a | Christoph Hellwig | |
166 | cf57298a | Christoph Hellwig | for (i = 0; i < nr_iov; i++) { |
167 | cf57298a | Christoph Hellwig | qemu_iovec_add(qiov, p, sizes[i]); |
168 | cf57298a | Christoph Hellwig | p += sizes[i]; |
169 | cf57298a | Christoph Hellwig | } |
170 | cf57298a | Christoph Hellwig | |
171 | 40a0d7c3 | Kevin Wolf | fail:
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172 | cf57298a | Christoph Hellwig | free(sizes); |
173 | cf57298a | Christoph Hellwig | return buf;
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174 | cf57298a | Christoph Hellwig | } |
175 | cf57298a | Christoph Hellwig | |
176 | e3aff4f6 | aliguori | static int do_read(char *buf, int64_t offset, int count, int *total) |
177 | e3aff4f6 | aliguori | { |
178 | e3aff4f6 | aliguori | int ret;
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179 | e3aff4f6 | aliguori | |
180 | e3aff4f6 | aliguori | ret = bdrv_read(bs, offset >> 9, (uint8_t *)buf, count >> 9); |
181 | e3aff4f6 | aliguori | if (ret < 0) |
182 | e3aff4f6 | aliguori | return ret;
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183 | e3aff4f6 | aliguori | *total = count; |
184 | e3aff4f6 | aliguori | return 1; |
185 | e3aff4f6 | aliguori | } |
186 | e3aff4f6 | aliguori | |
187 | e3aff4f6 | aliguori | static int do_write(char *buf, int64_t offset, int count, int *total) |
188 | e3aff4f6 | aliguori | { |
189 | e3aff4f6 | aliguori | int ret;
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190 | e3aff4f6 | aliguori | |
191 | e3aff4f6 | aliguori | ret = bdrv_write(bs, offset >> 9, (uint8_t *)buf, count >> 9); |
192 | e3aff4f6 | aliguori | if (ret < 0) |
193 | e3aff4f6 | aliguori | return ret;
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194 | e3aff4f6 | aliguori | *total = count; |
195 | e3aff4f6 | aliguori | return 1; |
196 | e3aff4f6 | aliguori | } |
197 | e3aff4f6 | aliguori | |
198 | e3aff4f6 | aliguori | static int do_pread(char *buf, int64_t offset, int count, int *total) |
199 | e3aff4f6 | aliguori | { |
200 | e3aff4f6 | aliguori | *total = bdrv_pread(bs, offset, (uint8_t *)buf, count); |
201 | e3aff4f6 | aliguori | if (*total < 0) |
202 | e3aff4f6 | aliguori | return *total;
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203 | e3aff4f6 | aliguori | return 1; |
204 | e3aff4f6 | aliguori | } |
205 | e3aff4f6 | aliguori | |
206 | e3aff4f6 | aliguori | static int do_pwrite(char *buf, int64_t offset, int count, int *total) |
207 | e3aff4f6 | aliguori | { |
208 | e3aff4f6 | aliguori | *total = bdrv_pwrite(bs, offset, (uint8_t *)buf, count); |
209 | e3aff4f6 | aliguori | if (*total < 0) |
210 | e3aff4f6 | aliguori | return *total;
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211 | e3aff4f6 | aliguori | return 1; |
212 | e3aff4f6 | aliguori | } |
213 | e3aff4f6 | aliguori | |
214 | ca94dbc7 | Kevin Wolf | static int do_load_vmstate(char *buf, int64_t offset, int count, int *total) |
215 | ca94dbc7 | Kevin Wolf | { |
216 | ca94dbc7 | Kevin Wolf | *total = bdrv_load_vmstate(bs, (uint8_t *)buf, offset, count); |
217 | ca94dbc7 | Kevin Wolf | if (*total < 0) |
218 | ca94dbc7 | Kevin Wolf | return *total;
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219 | ca94dbc7 | Kevin Wolf | return 1; |
220 | ca94dbc7 | Kevin Wolf | } |
221 | ca94dbc7 | Kevin Wolf | |
222 | ca94dbc7 | Kevin Wolf | static int do_save_vmstate(char *buf, int64_t offset, int count, int *total) |
223 | ca94dbc7 | Kevin Wolf | { |
224 | ca94dbc7 | Kevin Wolf | *total = bdrv_save_vmstate(bs, (uint8_t *)buf, offset, count); |
225 | ca94dbc7 | Kevin Wolf | if (*total < 0) |
226 | ca94dbc7 | Kevin Wolf | return *total;
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227 | ca94dbc7 | Kevin Wolf | return 1; |
228 | ca94dbc7 | Kevin Wolf | } |
229 | ca94dbc7 | Kevin Wolf | |
230 | e3aff4f6 | aliguori | #define NOT_DONE 0x7fffffff |
231 | e3aff4f6 | aliguori | static void aio_rw_done(void *opaque, int ret) |
232 | e3aff4f6 | aliguori | { |
233 | e3aff4f6 | aliguori | *(int *)opaque = ret;
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234 | e3aff4f6 | aliguori | } |
235 | e3aff4f6 | aliguori | |
236 | e3aff4f6 | aliguori | static int do_aio_readv(QEMUIOVector *qiov, int64_t offset, int *total) |
237 | e3aff4f6 | aliguori | { |
238 | e3aff4f6 | aliguori | BlockDriverAIOCB *acb; |
239 | e3aff4f6 | aliguori | int async_ret = NOT_DONE;
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240 | e3aff4f6 | aliguori | |
241 | e3aff4f6 | aliguori | acb = bdrv_aio_readv(bs, offset >> 9, qiov, qiov->size >> 9, |
242 | e3aff4f6 | aliguori | aio_rw_done, &async_ret); |
243 | e3aff4f6 | aliguori | if (!acb)
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244 | e3aff4f6 | aliguori | return -EIO;
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245 | e3aff4f6 | aliguori | |
246 | e3aff4f6 | aliguori | while (async_ret == NOT_DONE)
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247 | e3aff4f6 | aliguori | qemu_aio_wait(); |
248 | e3aff4f6 | aliguori | |
249 | e3aff4f6 | aliguori | *total = qiov->size; |
250 | e3aff4f6 | aliguori | return async_ret < 0 ? async_ret : 1; |
251 | e3aff4f6 | aliguori | } |
252 | e3aff4f6 | aliguori | |
253 | e3aff4f6 | aliguori | static int do_aio_writev(QEMUIOVector *qiov, int64_t offset, int *total) |
254 | e3aff4f6 | aliguori | { |
255 | e3aff4f6 | aliguori | BlockDriverAIOCB *acb; |
256 | e3aff4f6 | aliguori | int async_ret = NOT_DONE;
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257 | e3aff4f6 | aliguori | |
258 | e3aff4f6 | aliguori | acb = bdrv_aio_writev(bs, offset >> 9, qiov, qiov->size >> 9, |
259 | e3aff4f6 | aliguori | aio_rw_done, &async_ret); |
260 | e3aff4f6 | aliguori | if (!acb)
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261 | e3aff4f6 | aliguori | return -EIO;
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262 | e3aff4f6 | aliguori | |
263 | e3aff4f6 | aliguori | while (async_ret == NOT_DONE)
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264 | e3aff4f6 | aliguori | qemu_aio_wait(); |
265 | e3aff4f6 | aliguori | |
266 | 7e9bbc9f | aliguori | *total = qiov->size; |
267 | e3aff4f6 | aliguori | return async_ret < 0 ? async_ret : 1; |
268 | e3aff4f6 | aliguori | } |
269 | e3aff4f6 | aliguori | |
270 | 776cbbbd | Kevin Wolf | struct multiwrite_async_ret {
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271 | 776cbbbd | Kevin Wolf | int num_done;
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272 | 776cbbbd | Kevin Wolf | int error;
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273 | 776cbbbd | Kevin Wolf | }; |
274 | 776cbbbd | Kevin Wolf | |
275 | 776cbbbd | Kevin Wolf | static void multiwrite_cb(void *opaque, int ret) |
276 | 776cbbbd | Kevin Wolf | { |
277 | 776cbbbd | Kevin Wolf | struct multiwrite_async_ret *async_ret = opaque;
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278 | 776cbbbd | Kevin Wolf | |
279 | 776cbbbd | Kevin Wolf | async_ret->num_done++; |
280 | 776cbbbd | Kevin Wolf | if (ret < 0) { |
281 | 776cbbbd | Kevin Wolf | async_ret->error = ret; |
282 | 776cbbbd | Kevin Wolf | } |
283 | 776cbbbd | Kevin Wolf | } |
284 | 776cbbbd | Kevin Wolf | |
285 | 776cbbbd | Kevin Wolf | static int do_aio_multiwrite(BlockRequest* reqs, int num_reqs, int *total) |
286 | 776cbbbd | Kevin Wolf | { |
287 | 776cbbbd | Kevin Wolf | int i, ret;
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288 | 776cbbbd | Kevin Wolf | struct multiwrite_async_ret async_ret = {
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289 | 776cbbbd | Kevin Wolf | .num_done = 0,
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290 | 776cbbbd | Kevin Wolf | .error = 0,
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291 | 776cbbbd | Kevin Wolf | }; |
292 | 776cbbbd | Kevin Wolf | |
293 | 776cbbbd | Kevin Wolf | *total = 0;
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294 | 776cbbbd | Kevin Wolf | for (i = 0; i < num_reqs; i++) { |
295 | 776cbbbd | Kevin Wolf | reqs[i].cb = multiwrite_cb; |
296 | 776cbbbd | Kevin Wolf | reqs[i].opaque = &async_ret; |
297 | 776cbbbd | Kevin Wolf | *total += reqs[i].qiov->size; |
298 | 776cbbbd | Kevin Wolf | } |
299 | 776cbbbd | Kevin Wolf | |
300 | 776cbbbd | Kevin Wolf | ret = bdrv_aio_multiwrite(bs, reqs, num_reqs); |
301 | 776cbbbd | Kevin Wolf | if (ret < 0) { |
302 | 776cbbbd | Kevin Wolf | return ret;
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303 | 776cbbbd | Kevin Wolf | } |
304 | 776cbbbd | Kevin Wolf | |
305 | 776cbbbd | Kevin Wolf | while (async_ret.num_done < num_reqs) {
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306 | 776cbbbd | Kevin Wolf | qemu_aio_wait(); |
307 | 776cbbbd | Kevin Wolf | } |
308 | 776cbbbd | Kevin Wolf | |
309 | 776cbbbd | Kevin Wolf | return async_ret.error < 0 ? async_ret.error : 1; |
310 | 776cbbbd | Kevin Wolf | } |
311 | e3aff4f6 | aliguori | |
312 | e3aff4f6 | aliguori | static void |
313 | e3aff4f6 | aliguori | read_help(void)
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314 | e3aff4f6 | aliguori | { |
315 | e3aff4f6 | aliguori | printf( |
316 | e3aff4f6 | aliguori | "\n"
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317 | e3aff4f6 | aliguori | " reads a range of bytes from the given offset\n"
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318 | e3aff4f6 | aliguori | "\n"
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319 | e3aff4f6 | aliguori | " Example:\n"
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320 | e3aff4f6 | aliguori | " 'read -v 512 1k' - dumps 1 kilobyte read from 512 bytes into the file\n"
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321 | e3aff4f6 | aliguori | "\n"
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322 | e3aff4f6 | aliguori | " Reads a segment of the currently open file, optionally dumping it to the\n"
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323 | e3aff4f6 | aliguori | " standard output stream (with -v option) for subsequent inspection.\n"
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324 | ca94dbc7 | Kevin Wolf | " -b, -- read from the VM state rather than the virtual disk\n"
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325 | d9654a58 | Kevin Wolf | " -C, -- report statistics in a machine parsable format\n"
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326 | d9654a58 | Kevin Wolf | " -l, -- length for pattern verification (only with -P)\n"
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327 | e3aff4f6 | aliguori | " -p, -- use bdrv_pread to read the file\n"
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328 | c48101ae | aliguori | " -P, -- use a pattern to verify read data\n"
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329 | e3aff4f6 | aliguori | " -q, -- quite mode, do not show I/O statistics\n"
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330 | d9654a58 | Kevin Wolf | " -s, -- start offset for pattern verification (only with -P)\n"
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331 | d9654a58 | Kevin Wolf | " -v, -- dump buffer to standard output\n"
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332 | e3aff4f6 | aliguori | "\n");
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333 | e3aff4f6 | aliguori | } |
334 | e3aff4f6 | aliguori | |
335 | 22a2bdcb | Blue Swirl | static int read_f(int argc, char **argv); |
336 | 22a2bdcb | Blue Swirl | |
337 | 22a2bdcb | Blue Swirl | static const cmdinfo_t read_cmd = { |
338 | 22a2bdcb | Blue Swirl | .name = "read",
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339 | 22a2bdcb | Blue Swirl | .altname = "r",
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340 | 22a2bdcb | Blue Swirl | .cfunc = read_f, |
341 | 22a2bdcb | Blue Swirl | .argmin = 2,
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342 | 22a2bdcb | Blue Swirl | .argmax = -1,
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343 | 22a2bdcb | Blue Swirl | .args = "[-abCpqv] [-P pattern [-s off] [-l len]] off len",
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344 | 22a2bdcb | Blue Swirl | .oneline = "reads a number of bytes at a specified offset",
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345 | 22a2bdcb | Blue Swirl | .help = read_help, |
346 | 22a2bdcb | Blue Swirl | }; |
347 | 22a2bdcb | Blue Swirl | |
348 | e3aff4f6 | aliguori | static int |
349 | e3aff4f6 | aliguori | read_f(int argc, char **argv) |
350 | e3aff4f6 | aliguori | { |
351 | e3aff4f6 | aliguori | struct timeval t1, t2;
|
352 | e3aff4f6 | aliguori | int Cflag = 0, pflag = 0, qflag = 0, vflag = 0; |
353 | ca94dbc7 | Kevin Wolf | int Pflag = 0, sflag = 0, lflag = 0, bflag = 0; |
354 | e3aff4f6 | aliguori | int c, cnt;
|
355 | e3aff4f6 | aliguori | char *buf;
|
356 | e3aff4f6 | aliguori | int64_t offset; |
357 | d4ec5228 | Paul Brook | int count;
|
358 | d4ec5228 | Paul Brook | /* Some compilers get confused and warn if this is not initialized. */
|
359 | d4ec5228 | Paul Brook | int total = 0; |
360 | d9654a58 | Kevin Wolf | int pattern = 0, pattern_offset = 0, pattern_count = 0; |
361 | e3aff4f6 | aliguori | |
362 | ca94dbc7 | Kevin Wolf | while ((c = getopt(argc, argv, "bCl:pP:qs:v")) != EOF) { |
363 | e3aff4f6 | aliguori | switch (c) {
|
364 | ca94dbc7 | Kevin Wolf | case 'b': |
365 | ca94dbc7 | Kevin Wolf | bflag = 1;
|
366 | ca94dbc7 | Kevin Wolf | break;
|
367 | e3aff4f6 | aliguori | case 'C': |
368 | e3aff4f6 | aliguori | Cflag = 1;
|
369 | e3aff4f6 | aliguori | break;
|
370 | d9654a58 | Kevin Wolf | case 'l': |
371 | d9654a58 | Kevin Wolf | lflag = 1;
|
372 | d9654a58 | Kevin Wolf | pattern_count = cvtnum(optarg); |
373 | d9654a58 | Kevin Wolf | if (pattern_count < 0) { |
374 | d9654a58 | Kevin Wolf | printf("non-numeric length argument -- %s\n", optarg);
|
375 | d9654a58 | Kevin Wolf | return 0; |
376 | d9654a58 | Kevin Wolf | } |
377 | d9654a58 | Kevin Wolf | break;
|
378 | e3aff4f6 | aliguori | case 'p': |
379 | e3aff4f6 | aliguori | pflag = 1;
|
380 | e3aff4f6 | aliguori | break;
|
381 | c48101ae | aliguori | case 'P': |
382 | c48101ae | aliguori | Pflag = 1;
|
383 | cf070d7e | Christoph Hellwig | pattern = parse_pattern(optarg); |
384 | cf070d7e | Christoph Hellwig | if (pattern < 0) |
385 | cf070d7e | Christoph Hellwig | return 0; |
386 | c48101ae | aliguori | break;
|
387 | e3aff4f6 | aliguori | case 'q': |
388 | e3aff4f6 | aliguori | qflag = 1;
|
389 | e3aff4f6 | aliguori | break;
|
390 | d9654a58 | Kevin Wolf | case 's': |
391 | d9654a58 | Kevin Wolf | sflag = 1;
|
392 | d9654a58 | Kevin Wolf | pattern_offset = cvtnum(optarg); |
393 | d9654a58 | Kevin Wolf | if (pattern_offset < 0) { |
394 | d9654a58 | Kevin Wolf | printf("non-numeric length argument -- %s\n", optarg);
|
395 | d9654a58 | Kevin Wolf | return 0; |
396 | d9654a58 | Kevin Wolf | } |
397 | d9654a58 | Kevin Wolf | break;
|
398 | e3aff4f6 | aliguori | case 'v': |
399 | e3aff4f6 | aliguori | vflag = 1;
|
400 | e3aff4f6 | aliguori | break;
|
401 | e3aff4f6 | aliguori | default:
|
402 | e3aff4f6 | aliguori | return command_usage(&read_cmd);
|
403 | e3aff4f6 | aliguori | } |
404 | e3aff4f6 | aliguori | } |
405 | e3aff4f6 | aliguori | |
406 | e3aff4f6 | aliguori | if (optind != argc - 2) |
407 | e3aff4f6 | aliguori | return command_usage(&read_cmd);
|
408 | e3aff4f6 | aliguori | |
409 | ca94dbc7 | Kevin Wolf | if (bflag && pflag) {
|
410 | ca94dbc7 | Kevin Wolf | printf("-b and -p cannot be specified at the same time\n");
|
411 | ca94dbc7 | Kevin Wolf | return 0; |
412 | ca94dbc7 | Kevin Wolf | } |
413 | ca94dbc7 | Kevin Wolf | |
414 | e3aff4f6 | aliguori | offset = cvtnum(argv[optind]); |
415 | e3aff4f6 | aliguori | if (offset < 0) { |
416 | e3aff4f6 | aliguori | printf("non-numeric length argument -- %s\n", argv[optind]);
|
417 | e3aff4f6 | aliguori | return 0; |
418 | e3aff4f6 | aliguori | } |
419 | e3aff4f6 | aliguori | |
420 | e3aff4f6 | aliguori | optind++; |
421 | e3aff4f6 | aliguori | count = cvtnum(argv[optind]); |
422 | e3aff4f6 | aliguori | if (count < 0) { |
423 | e3aff4f6 | aliguori | printf("non-numeric length argument -- %s\n", argv[optind]);
|
424 | e3aff4f6 | aliguori | return 0; |
425 | e3aff4f6 | aliguori | } |
426 | e3aff4f6 | aliguori | |
427 | d9654a58 | Kevin Wolf | if (!Pflag && (lflag || sflag)) {
|
428 | d9654a58 | Kevin Wolf | return command_usage(&read_cmd);
|
429 | d9654a58 | Kevin Wolf | } |
430 | d9654a58 | Kevin Wolf | |
431 | d9654a58 | Kevin Wolf | if (!lflag) {
|
432 | d9654a58 | Kevin Wolf | pattern_count = count - pattern_offset; |
433 | d9654a58 | Kevin Wolf | } |
434 | d9654a58 | Kevin Wolf | |
435 | d9654a58 | Kevin Wolf | if ((pattern_count < 0) || (pattern_count + pattern_offset > count)) { |
436 | d9654a58 | Kevin Wolf | printf("pattern verfication range exceeds end of read data\n");
|
437 | d9654a58 | Kevin Wolf | return 0; |
438 | d9654a58 | Kevin Wolf | } |
439 | d9654a58 | Kevin Wolf | |
440 | e3aff4f6 | aliguori | if (!pflag)
|
441 | e3aff4f6 | aliguori | if (offset & 0x1ff) { |
442 | 0bfcd599 | Blue Swirl | printf("offset %" PRId64 " is not sector aligned\n", |
443 | 0bfcd599 | Blue Swirl | offset); |
444 | e3aff4f6 | aliguori | return 0; |
445 | e3aff4f6 | aliguori | |
446 | e3aff4f6 | aliguori | if (count & 0x1ff) { |
447 | e3aff4f6 | aliguori | printf("count %d is not sector aligned\n",
|
448 | e3aff4f6 | aliguori | count); |
449 | e3aff4f6 | aliguori | return 0; |
450 | e3aff4f6 | aliguori | } |
451 | e3aff4f6 | aliguori | } |
452 | e3aff4f6 | aliguori | |
453 | e3aff4f6 | aliguori | buf = qemu_io_alloc(count, 0xab);
|
454 | e3aff4f6 | aliguori | |
455 | e3aff4f6 | aliguori | gettimeofday(&t1, NULL);
|
456 | e3aff4f6 | aliguori | if (pflag)
|
457 | e3aff4f6 | aliguori | cnt = do_pread(buf, offset, count, &total); |
458 | ca94dbc7 | Kevin Wolf | else if (bflag) |
459 | ca94dbc7 | Kevin Wolf | cnt = do_load_vmstate(buf, offset, count, &total); |
460 | e3aff4f6 | aliguori | else
|
461 | e3aff4f6 | aliguori | cnt = do_read(buf, offset, count, &total); |
462 | e3aff4f6 | aliguori | gettimeofday(&t2, NULL);
|
463 | e3aff4f6 | aliguori | |
464 | e3aff4f6 | aliguori | if (cnt < 0) { |
465 | e3aff4f6 | aliguori | printf("read failed: %s\n", strerror(-cnt));
|
466 | 7d8abfcb | Kevin Wolf | goto out;
|
467 | e3aff4f6 | aliguori | } |
468 | e3aff4f6 | aliguori | |
469 | c48101ae | aliguori | if (Pflag) {
|
470 | d9654a58 | Kevin Wolf | void* cmp_buf = malloc(pattern_count);
|
471 | d9654a58 | Kevin Wolf | memset(cmp_buf, pattern, pattern_count); |
472 | d9654a58 | Kevin Wolf | if (memcmp(buf + pattern_offset, cmp_buf, pattern_count)) {
|
473 | 0bfcd599 | Blue Swirl | printf("Pattern verification failed at offset %"
|
474 | 0bfcd599 | Blue Swirl | PRId64 ", %d bytes\n",
|
475 | 0bfcd599 | Blue Swirl | offset + pattern_offset, pattern_count); |
476 | c48101ae | aliguori | } |
477 | c48101ae | aliguori | free(cmp_buf); |
478 | c48101ae | aliguori | } |
479 | c48101ae | aliguori | |
480 | e3aff4f6 | aliguori | if (qflag)
|
481 | 7d8abfcb | Kevin Wolf | goto out;
|
482 | e3aff4f6 | aliguori | |
483 | e3aff4f6 | aliguori | if (vflag)
|
484 | e3aff4f6 | aliguori | dump_buffer(buf, offset, count); |
485 | e3aff4f6 | aliguori | |
486 | e3aff4f6 | aliguori | /* Finally, report back -- -C gives a parsable format */
|
487 | e3aff4f6 | aliguori | t2 = tsub(t2, t1); |
488 | e3aff4f6 | aliguori | print_report("read", &t2, offset, count, total, cnt, Cflag);
|
489 | e3aff4f6 | aliguori | |
490 | 7d8abfcb | Kevin Wolf | out:
|
491 | e3aff4f6 | aliguori | qemu_io_free(buf); |
492 | e3aff4f6 | aliguori | |
493 | e3aff4f6 | aliguori | return 0; |
494 | e3aff4f6 | aliguori | } |
495 | e3aff4f6 | aliguori | |
496 | e3aff4f6 | aliguori | static void |
497 | e3aff4f6 | aliguori | readv_help(void)
|
498 | e3aff4f6 | aliguori | { |
499 | e3aff4f6 | aliguori | printf( |
500 | e3aff4f6 | aliguori | "\n"
|
501 | e3aff4f6 | aliguori | " reads a range of bytes from the given offset into multiple buffers\n"
|
502 | e3aff4f6 | aliguori | "\n"
|
503 | e3aff4f6 | aliguori | " Example:\n"
|
504 | e3aff4f6 | aliguori | " 'readv -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n"
|
505 | e3aff4f6 | aliguori | "\n"
|
506 | e3aff4f6 | aliguori | " Reads a segment of the currently open file, optionally dumping it to the\n"
|
507 | e3aff4f6 | aliguori | " standard output stream (with -v option) for subsequent inspection.\n"
|
508 | e3aff4f6 | aliguori | " Uses multiple iovec buffers if more than one byte range is specified.\n"
|
509 | e3aff4f6 | aliguori | " -C, -- report statistics in a machine parsable format\n"
|
510 | c48101ae | aliguori | " -P, -- use a pattern to verify read data\n"
|
511 | e3aff4f6 | aliguori | " -v, -- dump buffer to standard output\n"
|
512 | e3aff4f6 | aliguori | " -q, -- quite mode, do not show I/O statistics\n"
|
513 | e3aff4f6 | aliguori | "\n");
|
514 | e3aff4f6 | aliguori | } |
515 | e3aff4f6 | aliguori | |
516 | 22a2bdcb | Blue Swirl | static int readv_f(int argc, char **argv); |
517 | 22a2bdcb | Blue Swirl | |
518 | 22a2bdcb | Blue Swirl | static const cmdinfo_t readv_cmd = { |
519 | 22a2bdcb | Blue Swirl | .name = "readv",
|
520 | 22a2bdcb | Blue Swirl | .cfunc = readv_f, |
521 | 22a2bdcb | Blue Swirl | .argmin = 2,
|
522 | 22a2bdcb | Blue Swirl | .argmax = -1,
|
523 | 22a2bdcb | Blue Swirl | .args = "[-Cqv] [-P pattern ] off len [len..]",
|
524 | 22a2bdcb | Blue Swirl | .oneline = "reads a number of bytes at a specified offset",
|
525 | 22a2bdcb | Blue Swirl | .help = readv_help, |
526 | 22a2bdcb | Blue Swirl | }; |
527 | 22a2bdcb | Blue Swirl | |
528 | e3aff4f6 | aliguori | static int |
529 | e3aff4f6 | aliguori | readv_f(int argc, char **argv) |
530 | e3aff4f6 | aliguori | { |
531 | e3aff4f6 | aliguori | struct timeval t1, t2;
|
532 | e3aff4f6 | aliguori | int Cflag = 0, qflag = 0, vflag = 0; |
533 | e3aff4f6 | aliguori | int c, cnt;
|
534 | cf57298a | Christoph Hellwig | char *buf;
|
535 | e3aff4f6 | aliguori | int64_t offset; |
536 | 6474bd69 | Blue Swirl | /* Some compilers get confused and warn if this is not initialized. */
|
537 | 6474bd69 | Blue Swirl | int total = 0; |
538 | cf57298a | Christoph Hellwig | int nr_iov;
|
539 | e3aff4f6 | aliguori | QEMUIOVector qiov; |
540 | c48101ae | aliguori | int pattern = 0; |
541 | c48101ae | aliguori | int Pflag = 0; |
542 | e3aff4f6 | aliguori | |
543 | c48101ae | aliguori | while ((c = getopt(argc, argv, "CP:qv")) != EOF) { |
544 | e3aff4f6 | aliguori | switch (c) {
|
545 | e3aff4f6 | aliguori | case 'C': |
546 | e3aff4f6 | aliguori | Cflag = 1;
|
547 | e3aff4f6 | aliguori | break;
|
548 | c48101ae | aliguori | case 'P': |
549 | c48101ae | aliguori | Pflag = 1;
|
550 | cf070d7e | Christoph Hellwig | pattern = parse_pattern(optarg); |
551 | cf070d7e | Christoph Hellwig | if (pattern < 0) |
552 | cf070d7e | Christoph Hellwig | return 0; |
553 | c48101ae | aliguori | break;
|
554 | e3aff4f6 | aliguori | case 'q': |
555 | e3aff4f6 | aliguori | qflag = 1;
|
556 | e3aff4f6 | aliguori | break;
|
557 | e3aff4f6 | aliguori | case 'v': |
558 | e3aff4f6 | aliguori | vflag = 1;
|
559 | e3aff4f6 | aliguori | break;
|
560 | e3aff4f6 | aliguori | default:
|
561 | e3aff4f6 | aliguori | return command_usage(&readv_cmd);
|
562 | e3aff4f6 | aliguori | } |
563 | e3aff4f6 | aliguori | } |
564 | e3aff4f6 | aliguori | |
565 | e3aff4f6 | aliguori | if (optind > argc - 2) |
566 | e3aff4f6 | aliguori | return command_usage(&readv_cmd);
|
567 | e3aff4f6 | aliguori | |
568 | e3aff4f6 | aliguori | |
569 | e3aff4f6 | aliguori | offset = cvtnum(argv[optind]); |
570 | e3aff4f6 | aliguori | if (offset < 0) { |
571 | e3aff4f6 | aliguori | printf("non-numeric length argument -- %s\n", argv[optind]);
|
572 | e3aff4f6 | aliguori | return 0; |
573 | e3aff4f6 | aliguori | } |
574 | e3aff4f6 | aliguori | optind++; |
575 | e3aff4f6 | aliguori | |
576 | e3aff4f6 | aliguori | if (offset & 0x1ff) { |
577 | 0bfcd599 | Blue Swirl | printf("offset %" PRId64 " is not sector aligned\n", |
578 | 0bfcd599 | Blue Swirl | offset); |
579 | e3aff4f6 | aliguori | return 0; |
580 | e3aff4f6 | aliguori | } |
581 | e3aff4f6 | aliguori | |
582 | e3aff4f6 | aliguori | nr_iov = argc - optind; |
583 | cf57298a | Christoph Hellwig | buf = create_iovec(&qiov, &argv[optind], nr_iov, 0xab);
|
584 | e3aff4f6 | aliguori | |
585 | e3aff4f6 | aliguori | gettimeofday(&t1, NULL);
|
586 | e3aff4f6 | aliguori | cnt = do_aio_readv(&qiov, offset, &total); |
587 | e3aff4f6 | aliguori | gettimeofday(&t2, NULL);
|
588 | e3aff4f6 | aliguori | |
589 | e3aff4f6 | aliguori | if (cnt < 0) { |
590 | e3aff4f6 | aliguori | printf("readv failed: %s\n", strerror(-cnt));
|
591 | 7d8abfcb | Kevin Wolf | goto out;
|
592 | e3aff4f6 | aliguori | } |
593 | e3aff4f6 | aliguori | |
594 | c48101ae | aliguori | if (Pflag) {
|
595 | cf57298a | Christoph Hellwig | void* cmp_buf = malloc(qiov.size);
|
596 | cf57298a | Christoph Hellwig | memset(cmp_buf, pattern, qiov.size); |
597 | cf57298a | Christoph Hellwig | if (memcmp(buf, cmp_buf, qiov.size)) {
|
598 | 0bfcd599 | Blue Swirl | printf("Pattern verification failed at offset %"
|
599 | 0bfcd599 | Blue Swirl | PRId64 ", %zd bytes\n",
|
600 | 0bfcd599 | Blue Swirl | offset, qiov.size); |
601 | c48101ae | aliguori | } |
602 | c48101ae | aliguori | free(cmp_buf); |
603 | c48101ae | aliguori | } |
604 | c48101ae | aliguori | |
605 | e3aff4f6 | aliguori | if (qflag)
|
606 | 7d8abfcb | Kevin Wolf | goto out;
|
607 | e3aff4f6 | aliguori | |
608 | e3aff4f6 | aliguori | if (vflag)
|
609 | e3aff4f6 | aliguori | dump_buffer(buf, offset, qiov.size); |
610 | e3aff4f6 | aliguori | |
611 | e3aff4f6 | aliguori | /* Finally, report back -- -C gives a parsable format */
|
612 | e3aff4f6 | aliguori | t2 = tsub(t2, t1); |
613 | e3aff4f6 | aliguori | print_report("read", &t2, offset, qiov.size, total, cnt, Cflag);
|
614 | e3aff4f6 | aliguori | |
615 | 7d8abfcb | Kevin Wolf | out:
|
616 | e3aff4f6 | aliguori | qemu_io_free(buf); |
617 | e3aff4f6 | aliguori | return 0; |
618 | e3aff4f6 | aliguori | } |
619 | e3aff4f6 | aliguori | |
620 | e3aff4f6 | aliguori | static void |
621 | e3aff4f6 | aliguori | write_help(void)
|
622 | e3aff4f6 | aliguori | { |
623 | e3aff4f6 | aliguori | printf( |
624 | e3aff4f6 | aliguori | "\n"
|
625 | e3aff4f6 | aliguori | " writes a range of bytes from the given offset\n"
|
626 | e3aff4f6 | aliguori | "\n"
|
627 | e3aff4f6 | aliguori | " Example:\n"
|
628 | e3aff4f6 | aliguori | " 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n"
|
629 | e3aff4f6 | aliguori | "\n"
|
630 | e3aff4f6 | aliguori | " Writes into a segment of the currently open file, using a buffer\n"
|
631 | e3aff4f6 | aliguori | " filled with a set pattern (0xcdcdcdcd).\n"
|
632 | ca94dbc7 | Kevin Wolf | " -b, -- write to the VM state rather than the virtual disk\n"
|
633 | e3aff4f6 | aliguori | " -p, -- use bdrv_pwrite to write the file\n"
|
634 | e3aff4f6 | aliguori | " -P, -- use different pattern to fill file\n"
|
635 | e3aff4f6 | aliguori | " -C, -- report statistics in a machine parsable format\n"
|
636 | e3aff4f6 | aliguori | " -q, -- quite mode, do not show I/O statistics\n"
|
637 | e3aff4f6 | aliguori | "\n");
|
638 | e3aff4f6 | aliguori | } |
639 | e3aff4f6 | aliguori | |
640 | 22a2bdcb | Blue Swirl | static int write_f(int argc, char **argv); |
641 | 22a2bdcb | Blue Swirl | |
642 | 22a2bdcb | Blue Swirl | static const cmdinfo_t write_cmd = { |
643 | 22a2bdcb | Blue Swirl | .name = "write",
|
644 | 22a2bdcb | Blue Swirl | .altname = "w",
|
645 | 22a2bdcb | Blue Swirl | .cfunc = write_f, |
646 | 22a2bdcb | Blue Swirl | .argmin = 2,
|
647 | 22a2bdcb | Blue Swirl | .argmax = -1,
|
648 | 22a2bdcb | Blue Swirl | .args = "[-abCpq] [-P pattern ] off len",
|
649 | 22a2bdcb | Blue Swirl | .oneline = "writes a number of bytes at a specified offset",
|
650 | 22a2bdcb | Blue Swirl | .help = write_help, |
651 | 22a2bdcb | Blue Swirl | }; |
652 | 22a2bdcb | Blue Swirl | |
653 | e3aff4f6 | aliguori | static int |
654 | e3aff4f6 | aliguori | write_f(int argc, char **argv) |
655 | e3aff4f6 | aliguori | { |
656 | e3aff4f6 | aliguori | struct timeval t1, t2;
|
657 | ca94dbc7 | Kevin Wolf | int Cflag = 0, pflag = 0, qflag = 0, bflag = 0; |
658 | e3aff4f6 | aliguori | int c, cnt;
|
659 | e3aff4f6 | aliguori | char *buf;
|
660 | e3aff4f6 | aliguori | int64_t offset; |
661 | d4ec5228 | Paul Brook | int count;
|
662 | d4ec5228 | Paul Brook | /* Some compilers get confused and warn if this is not initialized. */
|
663 | d4ec5228 | Paul Brook | int total = 0; |
664 | e3aff4f6 | aliguori | int pattern = 0xcd; |
665 | e3aff4f6 | aliguori | |
666 | ca94dbc7 | Kevin Wolf | while ((c = getopt(argc, argv, "bCpP:q")) != EOF) { |
667 | e3aff4f6 | aliguori | switch (c) {
|
668 | ca94dbc7 | Kevin Wolf | case 'b': |
669 | ca94dbc7 | Kevin Wolf | bflag = 1;
|
670 | ca94dbc7 | Kevin Wolf | break;
|
671 | e3aff4f6 | aliguori | case 'C': |
672 | e3aff4f6 | aliguori | Cflag = 1;
|
673 | e3aff4f6 | aliguori | break;
|
674 | e3aff4f6 | aliguori | case 'p': |
675 | e3aff4f6 | aliguori | pflag = 1;
|
676 | e3aff4f6 | aliguori | break;
|
677 | e3aff4f6 | aliguori | case 'P': |
678 | cf070d7e | Christoph Hellwig | pattern = parse_pattern(optarg); |
679 | cf070d7e | Christoph Hellwig | if (pattern < 0) |
680 | cf070d7e | Christoph Hellwig | return 0; |
681 | e3aff4f6 | aliguori | break;
|
682 | e3aff4f6 | aliguori | case 'q': |
683 | e3aff4f6 | aliguori | qflag = 1;
|
684 | e3aff4f6 | aliguori | break;
|
685 | e3aff4f6 | aliguori | default:
|
686 | e3aff4f6 | aliguori | return command_usage(&write_cmd);
|
687 | e3aff4f6 | aliguori | } |
688 | e3aff4f6 | aliguori | } |
689 | e3aff4f6 | aliguori | |
690 | e3aff4f6 | aliguori | if (optind != argc - 2) |
691 | e3aff4f6 | aliguori | return command_usage(&write_cmd);
|
692 | e3aff4f6 | aliguori | |
693 | ca94dbc7 | Kevin Wolf | if (bflag && pflag) {
|
694 | ca94dbc7 | Kevin Wolf | printf("-b and -p cannot be specified at the same time\n");
|
695 | ca94dbc7 | Kevin Wolf | return 0; |
696 | ca94dbc7 | Kevin Wolf | } |
697 | ca94dbc7 | Kevin Wolf | |
698 | e3aff4f6 | aliguori | offset = cvtnum(argv[optind]); |
699 | e3aff4f6 | aliguori | if (offset < 0) { |
700 | e3aff4f6 | aliguori | printf("non-numeric length argument -- %s\n", argv[optind]);
|
701 | e3aff4f6 | aliguori | return 0; |
702 | e3aff4f6 | aliguori | } |
703 | e3aff4f6 | aliguori | |
704 | e3aff4f6 | aliguori | optind++; |
705 | e3aff4f6 | aliguori | count = cvtnum(argv[optind]); |
706 | e3aff4f6 | aliguori | if (count < 0) { |
707 | e3aff4f6 | aliguori | printf("non-numeric length argument -- %s\n", argv[optind]);
|
708 | e3aff4f6 | aliguori | return 0; |
709 | e3aff4f6 | aliguori | } |
710 | e3aff4f6 | aliguori | |
711 | e3aff4f6 | aliguori | if (!pflag) {
|
712 | e3aff4f6 | aliguori | if (offset & 0x1ff) { |
713 | 0bfcd599 | Blue Swirl | printf("offset %" PRId64 " is not sector aligned\n", |
714 | 0bfcd599 | Blue Swirl | offset); |
715 | e3aff4f6 | aliguori | return 0; |
716 | e3aff4f6 | aliguori | } |
717 | e3aff4f6 | aliguori | |
718 | e3aff4f6 | aliguori | if (count & 0x1ff) { |
719 | e3aff4f6 | aliguori | printf("count %d is not sector aligned\n",
|
720 | e3aff4f6 | aliguori | count); |
721 | e3aff4f6 | aliguori | return 0; |
722 | e3aff4f6 | aliguori | } |
723 | e3aff4f6 | aliguori | } |
724 | e3aff4f6 | aliguori | |
725 | e3aff4f6 | aliguori | buf = qemu_io_alloc(count, pattern); |
726 | e3aff4f6 | aliguori | |
727 | e3aff4f6 | aliguori | gettimeofday(&t1, NULL);
|
728 | e3aff4f6 | aliguori | if (pflag)
|
729 | e3aff4f6 | aliguori | cnt = do_pwrite(buf, offset, count, &total); |
730 | ca94dbc7 | Kevin Wolf | else if (bflag) |
731 | ca94dbc7 | Kevin Wolf | cnt = do_save_vmstate(buf, offset, count, &total); |
732 | e3aff4f6 | aliguori | else
|
733 | e3aff4f6 | aliguori | cnt = do_write(buf, offset, count, &total); |
734 | e3aff4f6 | aliguori | gettimeofday(&t2, NULL);
|
735 | e3aff4f6 | aliguori | |
736 | e3aff4f6 | aliguori | if (cnt < 0) { |
737 | e3aff4f6 | aliguori | printf("write failed: %s\n", strerror(-cnt));
|
738 | 7d8abfcb | Kevin Wolf | goto out;
|
739 | e3aff4f6 | aliguori | } |
740 | e3aff4f6 | aliguori | |
741 | e3aff4f6 | aliguori | if (qflag)
|
742 | 7d8abfcb | Kevin Wolf | goto out;
|
743 | e3aff4f6 | aliguori | |
744 | e3aff4f6 | aliguori | /* Finally, report back -- -C gives a parsable format */
|
745 | e3aff4f6 | aliguori | t2 = tsub(t2, t1); |
746 | e3aff4f6 | aliguori | print_report("wrote", &t2, offset, count, total, cnt, Cflag);
|
747 | e3aff4f6 | aliguori | |
748 | 7d8abfcb | Kevin Wolf | out:
|
749 | e3aff4f6 | aliguori | qemu_io_free(buf); |
750 | e3aff4f6 | aliguori | |
751 | e3aff4f6 | aliguori | return 0; |
752 | e3aff4f6 | aliguori | } |
753 | e3aff4f6 | aliguori | |
754 | e3aff4f6 | aliguori | static void |
755 | e3aff4f6 | aliguori | writev_help(void)
|
756 | e3aff4f6 | aliguori | { |
757 | e3aff4f6 | aliguori | printf( |
758 | e3aff4f6 | aliguori | "\n"
|
759 | e3aff4f6 | aliguori | " writes a range of bytes from the given offset source from multiple buffers\n"
|
760 | e3aff4f6 | aliguori | "\n"
|
761 | e3aff4f6 | aliguori | " Example:\n"
|
762 | e3aff4f6 | aliguori | " 'write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
|
763 | e3aff4f6 | aliguori | "\n"
|
764 | e3aff4f6 | aliguori | " Writes into a segment of the currently open file, using a buffer\n"
|
765 | e3aff4f6 | aliguori | " filled with a set pattern (0xcdcdcdcd).\n"
|
766 | e3aff4f6 | aliguori | " -P, -- use different pattern to fill file\n"
|
767 | e3aff4f6 | aliguori | " -C, -- report statistics in a machine parsable format\n"
|
768 | e3aff4f6 | aliguori | " -q, -- quite mode, do not show I/O statistics\n"
|
769 | e3aff4f6 | aliguori | "\n");
|
770 | e3aff4f6 | aliguori | } |
771 | e3aff4f6 | aliguori | |
772 | 22a2bdcb | Blue Swirl | static int writev_f(int argc, char **argv); |
773 | 22a2bdcb | Blue Swirl | |
774 | 22a2bdcb | Blue Swirl | static const cmdinfo_t writev_cmd = { |
775 | 22a2bdcb | Blue Swirl | .name = "writev",
|
776 | 22a2bdcb | Blue Swirl | .cfunc = writev_f, |
777 | 22a2bdcb | Blue Swirl | .argmin = 2,
|
778 | 22a2bdcb | Blue Swirl | .argmax = -1,
|
779 | 22a2bdcb | Blue Swirl | .args = "[-Cq] [-P pattern ] off len [len..]",
|
780 | 22a2bdcb | Blue Swirl | .oneline = "writes a number of bytes at a specified offset",
|
781 | 22a2bdcb | Blue Swirl | .help = writev_help, |
782 | 22a2bdcb | Blue Swirl | }; |
783 | 22a2bdcb | Blue Swirl | |
784 | e3aff4f6 | aliguori | static int |
785 | e3aff4f6 | aliguori | writev_f(int argc, char **argv) |
786 | e3aff4f6 | aliguori | { |
787 | e3aff4f6 | aliguori | struct timeval t1, t2;
|
788 | e3aff4f6 | aliguori | int Cflag = 0, qflag = 0; |
789 | e3aff4f6 | aliguori | int c, cnt;
|
790 | cf57298a | Christoph Hellwig | char *buf;
|
791 | e3aff4f6 | aliguori | int64_t offset; |
792 | 6474bd69 | Blue Swirl | /* Some compilers get confused and warn if this is not initialized. */
|
793 | 6474bd69 | Blue Swirl | int total = 0; |
794 | cf57298a | Christoph Hellwig | int nr_iov;
|
795 | e3aff4f6 | aliguori | int pattern = 0xcd; |
796 | e3aff4f6 | aliguori | QEMUIOVector qiov; |
797 | e3aff4f6 | aliguori | |
798 | e3aff4f6 | aliguori | while ((c = getopt(argc, argv, "CqP:")) != EOF) { |
799 | e3aff4f6 | aliguori | switch (c) {
|
800 | e3aff4f6 | aliguori | case 'C': |
801 | e3aff4f6 | aliguori | Cflag = 1;
|
802 | e3aff4f6 | aliguori | break;
|
803 | e3aff4f6 | aliguori | case 'q': |
804 | e3aff4f6 | aliguori | qflag = 1;
|
805 | e3aff4f6 | aliguori | break;
|
806 | e3aff4f6 | aliguori | case 'P': |
807 | cf070d7e | Christoph Hellwig | pattern = parse_pattern(optarg); |
808 | cf070d7e | Christoph Hellwig | if (pattern < 0) |
809 | cf070d7e | Christoph Hellwig | return 0; |
810 | e3aff4f6 | aliguori | break;
|
811 | e3aff4f6 | aliguori | default:
|
812 | e3aff4f6 | aliguori | return command_usage(&writev_cmd);
|
813 | e3aff4f6 | aliguori | } |
814 | e3aff4f6 | aliguori | } |
815 | e3aff4f6 | aliguori | |
816 | e3aff4f6 | aliguori | if (optind > argc - 2) |
817 | e3aff4f6 | aliguori | return command_usage(&writev_cmd);
|
818 | e3aff4f6 | aliguori | |
819 | e3aff4f6 | aliguori | offset = cvtnum(argv[optind]); |
820 | e3aff4f6 | aliguori | if (offset < 0) { |
821 | e3aff4f6 | aliguori | printf("non-numeric length argument -- %s\n", argv[optind]);
|
822 | e3aff4f6 | aliguori | return 0; |
823 | e3aff4f6 | aliguori | } |
824 | e3aff4f6 | aliguori | optind++; |
825 | e3aff4f6 | aliguori | |
826 | e3aff4f6 | aliguori | if (offset & 0x1ff) { |
827 | 0bfcd599 | Blue Swirl | printf("offset %" PRId64 " is not sector aligned\n", |
828 | 0bfcd599 | Blue Swirl | offset); |
829 | e3aff4f6 | aliguori | return 0; |
830 | e3aff4f6 | aliguori | } |
831 | e3aff4f6 | aliguori | |
832 | e3aff4f6 | aliguori | nr_iov = argc - optind; |
833 | cf57298a | Christoph Hellwig | buf = create_iovec(&qiov, &argv[optind], nr_iov, pattern); |
834 | e3aff4f6 | aliguori | |
835 | e3aff4f6 | aliguori | gettimeofday(&t1, NULL);
|
836 | e3aff4f6 | aliguori | cnt = do_aio_writev(&qiov, offset, &total); |
837 | e3aff4f6 | aliguori | gettimeofday(&t2, NULL);
|
838 | e3aff4f6 | aliguori | |
839 | e3aff4f6 | aliguori | if (cnt < 0) { |
840 | e3aff4f6 | aliguori | printf("writev failed: %s\n", strerror(-cnt));
|
841 | 7d8abfcb | Kevin Wolf | goto out;
|
842 | e3aff4f6 | aliguori | } |
843 | e3aff4f6 | aliguori | |
844 | e3aff4f6 | aliguori | if (qflag)
|
845 | 7d8abfcb | Kevin Wolf | goto out;
|
846 | e3aff4f6 | aliguori | |
847 | e3aff4f6 | aliguori | /* Finally, report back -- -C gives a parsable format */
|
848 | e3aff4f6 | aliguori | t2 = tsub(t2, t1); |
849 | e3aff4f6 | aliguori | print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag);
|
850 | 7d8abfcb | Kevin Wolf | out:
|
851 | e3aff4f6 | aliguori | qemu_io_free(buf); |
852 | e3aff4f6 | aliguori | return 0; |
853 | e3aff4f6 | aliguori | } |
854 | e3aff4f6 | aliguori | |
855 | 776cbbbd | Kevin Wolf | static void |
856 | 776cbbbd | Kevin Wolf | multiwrite_help(void)
|
857 | 776cbbbd | Kevin Wolf | { |
858 | 776cbbbd | Kevin Wolf | printf( |
859 | 776cbbbd | Kevin Wolf | "\n"
|
860 | 776cbbbd | Kevin Wolf | " writes a range of bytes from the given offset source from multiple buffers,\n"
|
861 | 776cbbbd | Kevin Wolf | " in a batch of requests that may be merged by qemu\n"
|
862 | 776cbbbd | Kevin Wolf | "\n"
|
863 | 776cbbbd | Kevin Wolf | " Example:\n"
|
864 | 776cbbbd | Kevin Wolf | " 'multiwrite 512 1k 1k ; 4k 1k' \n"
|
865 | 776cbbbd | Kevin Wolf | " writes 2 kB at 512 bytes and 1 kB at 4 kB into the open file\n"
|
866 | 776cbbbd | Kevin Wolf | "\n"
|
867 | 776cbbbd | Kevin Wolf | " Writes into a segment of the currently open file, using a buffer\n"
|
868 | 776cbbbd | Kevin Wolf | " filled with a set pattern (0xcdcdcdcd). The pattern byte is increased\n"
|
869 | 776cbbbd | Kevin Wolf | " by one for each request contained in the multiwrite command.\n"
|
870 | 776cbbbd | Kevin Wolf | " -P, -- use different pattern to fill file\n"
|
871 | 776cbbbd | Kevin Wolf | " -C, -- report statistics in a machine parsable format\n"
|
872 | 776cbbbd | Kevin Wolf | " -q, -- quiet mode, do not show I/O statistics\n"
|
873 | 776cbbbd | Kevin Wolf | "\n");
|
874 | 776cbbbd | Kevin Wolf | } |
875 | 776cbbbd | Kevin Wolf | |
876 | 776cbbbd | Kevin Wolf | static int multiwrite_f(int argc, char **argv); |
877 | 776cbbbd | Kevin Wolf | |
878 | 776cbbbd | Kevin Wolf | static const cmdinfo_t multiwrite_cmd = { |
879 | 776cbbbd | Kevin Wolf | .name = "multiwrite",
|
880 | 776cbbbd | Kevin Wolf | .cfunc = multiwrite_f, |
881 | 776cbbbd | Kevin Wolf | .argmin = 2,
|
882 | 776cbbbd | Kevin Wolf | .argmax = -1,
|
883 | 776cbbbd | Kevin Wolf | .args = "[-Cq] [-P pattern ] off len [len..] [; off len [len..]..]",
|
884 | 776cbbbd | Kevin Wolf | .oneline = "issues multiple write requests at once",
|
885 | 776cbbbd | Kevin Wolf | .help = multiwrite_help, |
886 | 776cbbbd | Kevin Wolf | }; |
887 | 776cbbbd | Kevin Wolf | |
888 | 776cbbbd | Kevin Wolf | static int |
889 | 776cbbbd | Kevin Wolf | multiwrite_f(int argc, char **argv) |
890 | 776cbbbd | Kevin Wolf | { |
891 | 776cbbbd | Kevin Wolf | struct timeval t1, t2;
|
892 | 776cbbbd | Kevin Wolf | int Cflag = 0, qflag = 0; |
893 | 776cbbbd | Kevin Wolf | int c, cnt;
|
894 | 776cbbbd | Kevin Wolf | char **buf;
|
895 | 776cbbbd | Kevin Wolf | int64_t offset, first_offset = 0;
|
896 | 776cbbbd | Kevin Wolf | /* Some compilers get confused and warn if this is not initialized. */
|
897 | 776cbbbd | Kevin Wolf | int total = 0; |
898 | 776cbbbd | Kevin Wolf | int nr_iov;
|
899 | 776cbbbd | Kevin Wolf | int nr_reqs;
|
900 | 776cbbbd | Kevin Wolf | int pattern = 0xcd; |
901 | 776cbbbd | Kevin Wolf | QEMUIOVector *qiovs; |
902 | 776cbbbd | Kevin Wolf | int i;
|
903 | 776cbbbd | Kevin Wolf | BlockRequest *reqs; |
904 | 776cbbbd | Kevin Wolf | |
905 | 776cbbbd | Kevin Wolf | while ((c = getopt(argc, argv, "CqP:")) != EOF) { |
906 | 776cbbbd | Kevin Wolf | switch (c) {
|
907 | 776cbbbd | Kevin Wolf | case 'C': |
908 | 776cbbbd | Kevin Wolf | Cflag = 1;
|
909 | 776cbbbd | Kevin Wolf | break;
|
910 | 776cbbbd | Kevin Wolf | case 'q': |
911 | 776cbbbd | Kevin Wolf | qflag = 1;
|
912 | 776cbbbd | Kevin Wolf | break;
|
913 | 776cbbbd | Kevin Wolf | case 'P': |
914 | 776cbbbd | Kevin Wolf | pattern = parse_pattern(optarg); |
915 | 776cbbbd | Kevin Wolf | if (pattern < 0) |
916 | 776cbbbd | Kevin Wolf | return 0; |
917 | 776cbbbd | Kevin Wolf | break;
|
918 | 776cbbbd | Kevin Wolf | default:
|
919 | 776cbbbd | Kevin Wolf | return command_usage(&writev_cmd);
|
920 | 776cbbbd | Kevin Wolf | } |
921 | 776cbbbd | Kevin Wolf | } |
922 | 776cbbbd | Kevin Wolf | |
923 | 776cbbbd | Kevin Wolf | if (optind > argc - 2) |
924 | 776cbbbd | Kevin Wolf | return command_usage(&writev_cmd);
|
925 | 776cbbbd | Kevin Wolf | |
926 | 776cbbbd | Kevin Wolf | nr_reqs = 1;
|
927 | 776cbbbd | Kevin Wolf | for (i = optind; i < argc; i++) {
|
928 | 776cbbbd | Kevin Wolf | if (!strcmp(argv[i], ";")) { |
929 | 776cbbbd | Kevin Wolf | nr_reqs++; |
930 | 776cbbbd | Kevin Wolf | } |
931 | 776cbbbd | Kevin Wolf | } |
932 | 776cbbbd | Kevin Wolf | |
933 | 776cbbbd | Kevin Wolf | reqs = qemu_malloc(nr_reqs * sizeof(*reqs));
|
934 | 776cbbbd | Kevin Wolf | buf = qemu_malloc(nr_reqs * sizeof(*buf));
|
935 | 776cbbbd | Kevin Wolf | qiovs = qemu_malloc(nr_reqs * sizeof(*qiovs));
|
936 | 776cbbbd | Kevin Wolf | |
937 | 776cbbbd | Kevin Wolf | for (i = 0; i < nr_reqs; i++) { |
938 | 776cbbbd | Kevin Wolf | int j;
|
939 | 776cbbbd | Kevin Wolf | |
940 | 776cbbbd | Kevin Wolf | /* Read the offset of the request */
|
941 | 776cbbbd | Kevin Wolf | offset = cvtnum(argv[optind]); |
942 | 776cbbbd | Kevin Wolf | if (offset < 0) { |
943 | 776cbbbd | Kevin Wolf | printf("non-numeric offset argument -- %s\n", argv[optind]);
|
944 | 776cbbbd | Kevin Wolf | return 0; |
945 | 776cbbbd | Kevin Wolf | } |
946 | 776cbbbd | Kevin Wolf | optind++; |
947 | 776cbbbd | Kevin Wolf | |
948 | 776cbbbd | Kevin Wolf | if (offset & 0x1ff) { |
949 | 776cbbbd | Kevin Wolf | printf("offset %lld is not sector aligned\n",
|
950 | 776cbbbd | Kevin Wolf | (long long)offset); |
951 | 776cbbbd | Kevin Wolf | return 0; |
952 | 776cbbbd | Kevin Wolf | } |
953 | 776cbbbd | Kevin Wolf | |
954 | 776cbbbd | Kevin Wolf | if (i == 0) { |
955 | 776cbbbd | Kevin Wolf | first_offset = offset; |
956 | 776cbbbd | Kevin Wolf | } |
957 | 776cbbbd | Kevin Wolf | |
958 | 776cbbbd | Kevin Wolf | /* Read lengths for qiov entries */
|
959 | 776cbbbd | Kevin Wolf | for (j = optind; j < argc; j++) {
|
960 | 776cbbbd | Kevin Wolf | if (!strcmp(argv[j], ";")) { |
961 | 776cbbbd | Kevin Wolf | break;
|
962 | 776cbbbd | Kevin Wolf | } |
963 | 776cbbbd | Kevin Wolf | } |
964 | 776cbbbd | Kevin Wolf | |
965 | 776cbbbd | Kevin Wolf | nr_iov = j - optind; |
966 | 776cbbbd | Kevin Wolf | |
967 | 776cbbbd | Kevin Wolf | /* Build request */
|
968 | 776cbbbd | Kevin Wolf | reqs[i].qiov = &qiovs[i]; |
969 | 776cbbbd | Kevin Wolf | buf[i] = create_iovec(reqs[i].qiov, &argv[optind], nr_iov, pattern); |
970 | 776cbbbd | Kevin Wolf | reqs[i].sector = offset >> 9;
|
971 | 776cbbbd | Kevin Wolf | reqs[i].nb_sectors = reqs[i].qiov->size >> 9;
|
972 | 776cbbbd | Kevin Wolf | |
973 | 776cbbbd | Kevin Wolf | optind = j + 1;
|
974 | 776cbbbd | Kevin Wolf | |
975 | 776cbbbd | Kevin Wolf | offset += reqs[i].qiov->size; |
976 | 776cbbbd | Kevin Wolf | pattern++; |
977 | 776cbbbd | Kevin Wolf | } |
978 | 776cbbbd | Kevin Wolf | |
979 | 776cbbbd | Kevin Wolf | gettimeofday(&t1, NULL);
|
980 | 776cbbbd | Kevin Wolf | cnt = do_aio_multiwrite(reqs, nr_reqs, &total); |
981 | 776cbbbd | Kevin Wolf | gettimeofday(&t2, NULL);
|
982 | 776cbbbd | Kevin Wolf | |
983 | 776cbbbd | Kevin Wolf | if (cnt < 0) { |
984 | 776cbbbd | Kevin Wolf | printf("aio_multiwrite failed: %s\n", strerror(-cnt));
|
985 | 776cbbbd | Kevin Wolf | goto out;
|
986 | 776cbbbd | Kevin Wolf | } |
987 | 776cbbbd | Kevin Wolf | |
988 | 776cbbbd | Kevin Wolf | if (qflag)
|
989 | 776cbbbd | Kevin Wolf | goto out;
|
990 | 776cbbbd | Kevin Wolf | |
991 | 776cbbbd | Kevin Wolf | /* Finally, report back -- -C gives a parsable format */
|
992 | 776cbbbd | Kevin Wolf | t2 = tsub(t2, t1); |
993 | 776cbbbd | Kevin Wolf | print_report("wrote", &t2, first_offset, total, total, cnt, Cflag);
|
994 | 776cbbbd | Kevin Wolf | out:
|
995 | 776cbbbd | Kevin Wolf | for (i = 0; i < nr_reqs; i++) { |
996 | 776cbbbd | Kevin Wolf | qemu_io_free(buf[i]); |
997 | 776cbbbd | Kevin Wolf | qemu_iovec_destroy(&qiovs[i]); |
998 | 776cbbbd | Kevin Wolf | } |
999 | 776cbbbd | Kevin Wolf | qemu_free(buf); |
1000 | 776cbbbd | Kevin Wolf | qemu_free(reqs); |
1001 | 776cbbbd | Kevin Wolf | qemu_free(qiovs); |
1002 | 776cbbbd | Kevin Wolf | return 0; |
1003 | 776cbbbd | Kevin Wolf | } |
1004 | 776cbbbd | Kevin Wolf | |
1005 | 95533d5f | Christoph Hellwig | struct aio_ctx {
|
1006 | 95533d5f | Christoph Hellwig | QEMUIOVector qiov; |
1007 | 95533d5f | Christoph Hellwig | int64_t offset; |
1008 | 95533d5f | Christoph Hellwig | char *buf;
|
1009 | 95533d5f | Christoph Hellwig | int qflag;
|
1010 | 95533d5f | Christoph Hellwig | int vflag;
|
1011 | 95533d5f | Christoph Hellwig | int Cflag;
|
1012 | 95533d5f | Christoph Hellwig | int Pflag;
|
1013 | 95533d5f | Christoph Hellwig | int pattern;
|
1014 | 95533d5f | Christoph Hellwig | struct timeval t1;
|
1015 | 95533d5f | Christoph Hellwig | }; |
1016 | 95533d5f | Christoph Hellwig | |
1017 | 95533d5f | Christoph Hellwig | static void |
1018 | 95533d5f | Christoph Hellwig | aio_write_done(void *opaque, int ret) |
1019 | 95533d5f | Christoph Hellwig | { |
1020 | 95533d5f | Christoph Hellwig | struct aio_ctx *ctx = opaque;
|
1021 | 95533d5f | Christoph Hellwig | struct timeval t2;
|
1022 | 95533d5f | Christoph Hellwig | |
1023 | 95533d5f | Christoph Hellwig | gettimeofday(&t2, NULL);
|
1024 | 95533d5f | Christoph Hellwig | |
1025 | 95533d5f | Christoph Hellwig | |
1026 | 95533d5f | Christoph Hellwig | if (ret < 0) { |
1027 | 95533d5f | Christoph Hellwig | printf("aio_write failed: %s\n", strerror(-ret));
|
1028 | 7d8abfcb | Kevin Wolf | goto out;
|
1029 | 95533d5f | Christoph Hellwig | } |
1030 | 95533d5f | Christoph Hellwig | |
1031 | 230d4fa4 | Christoph Hellwig | if (ctx->qflag) {
|
1032 | 7d8abfcb | Kevin Wolf | goto out;
|
1033 | 230d4fa4 | Christoph Hellwig | } |
1034 | 95533d5f | Christoph Hellwig | |
1035 | 95533d5f | Christoph Hellwig | /* Finally, report back -- -C gives a parsable format */
|
1036 | 95533d5f | Christoph Hellwig | t2 = tsub(t2, ctx->t1); |
1037 | 230d4fa4 | Christoph Hellwig | print_report("wrote", &t2, ctx->offset, ctx->qiov.size,
|
1038 | 230d4fa4 | Christoph Hellwig | ctx->qiov.size, 1, ctx->Cflag);
|
1039 | 7d8abfcb | Kevin Wolf | out:
|
1040 | 95533d5f | Christoph Hellwig | qemu_io_free(ctx->buf); |
1041 | 95533d5f | Christoph Hellwig | free(ctx); |
1042 | 95533d5f | Christoph Hellwig | } |
1043 | 95533d5f | Christoph Hellwig | |
1044 | 95533d5f | Christoph Hellwig | static void |
1045 | 95533d5f | Christoph Hellwig | aio_read_done(void *opaque, int ret) |
1046 | 95533d5f | Christoph Hellwig | { |
1047 | 95533d5f | Christoph Hellwig | struct aio_ctx *ctx = opaque;
|
1048 | 95533d5f | Christoph Hellwig | struct timeval t2;
|
1049 | 95533d5f | Christoph Hellwig | |
1050 | 95533d5f | Christoph Hellwig | gettimeofday(&t2, NULL);
|
1051 | 95533d5f | Christoph Hellwig | |
1052 | 95533d5f | Christoph Hellwig | if (ret < 0) { |
1053 | 95533d5f | Christoph Hellwig | printf("readv failed: %s\n", strerror(-ret));
|
1054 | 7d8abfcb | Kevin Wolf | goto out;
|
1055 | 95533d5f | Christoph Hellwig | } |
1056 | 95533d5f | Christoph Hellwig | |
1057 | 95533d5f | Christoph Hellwig | if (ctx->Pflag) {
|
1058 | 230d4fa4 | Christoph Hellwig | void *cmp_buf = malloc(ctx->qiov.size);
|
1059 | 95533d5f | Christoph Hellwig | |
1060 | 230d4fa4 | Christoph Hellwig | memset(cmp_buf, ctx->pattern, ctx->qiov.size); |
1061 | 230d4fa4 | Christoph Hellwig | if (memcmp(ctx->buf, cmp_buf, ctx->qiov.size)) {
|
1062 | 0bfcd599 | Blue Swirl | printf("Pattern verification failed at offset %"
|
1063 | 0bfcd599 | Blue Swirl | PRId64 ", %zd bytes\n",
|
1064 | 0bfcd599 | Blue Swirl | ctx->offset, ctx->qiov.size); |
1065 | 95533d5f | Christoph Hellwig | } |
1066 | 95533d5f | Christoph Hellwig | free(cmp_buf); |
1067 | 95533d5f | Christoph Hellwig | } |
1068 | 95533d5f | Christoph Hellwig | |
1069 | 230d4fa4 | Christoph Hellwig | if (ctx->qflag) {
|
1070 | 7d8abfcb | Kevin Wolf | goto out;
|
1071 | 230d4fa4 | Christoph Hellwig | } |
1072 | 95533d5f | Christoph Hellwig | |
1073 | 230d4fa4 | Christoph Hellwig | if (ctx->vflag) {
|
1074 | 230d4fa4 | Christoph Hellwig | dump_buffer(ctx->buf, ctx->offset, ctx->qiov.size); |
1075 | 230d4fa4 | Christoph Hellwig | } |
1076 | 95533d5f | Christoph Hellwig | |
1077 | 95533d5f | Christoph Hellwig | /* Finally, report back -- -C gives a parsable format */
|
1078 | 95533d5f | Christoph Hellwig | t2 = tsub(t2, ctx->t1); |
1079 | 230d4fa4 | Christoph Hellwig | print_report("read", &t2, ctx->offset, ctx->qiov.size,
|
1080 | 230d4fa4 | Christoph Hellwig | ctx->qiov.size, 1, ctx->Cflag);
|
1081 | 7d8abfcb | Kevin Wolf | out:
|
1082 | 95533d5f | Christoph Hellwig | qemu_io_free(ctx->buf); |
1083 | 95533d5f | Christoph Hellwig | free(ctx); |
1084 | 95533d5f | Christoph Hellwig | } |
1085 | 95533d5f | Christoph Hellwig | |
1086 | 95533d5f | Christoph Hellwig | static void |
1087 | 95533d5f | Christoph Hellwig | aio_read_help(void)
|
1088 | 95533d5f | Christoph Hellwig | { |
1089 | 95533d5f | Christoph Hellwig | printf( |
1090 | 95533d5f | Christoph Hellwig | "\n"
|
1091 | 95533d5f | Christoph Hellwig | " asynchronously reads a range of bytes from the given offset\n"
|
1092 | 95533d5f | Christoph Hellwig | "\n"
|
1093 | 95533d5f | Christoph Hellwig | " Example:\n"
|
1094 | 95533d5f | Christoph Hellwig | " 'aio_read -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n"
|
1095 | 95533d5f | Christoph Hellwig | "\n"
|
1096 | 95533d5f | Christoph Hellwig | " Reads a segment of the currently open file, optionally dumping it to the\n"
|
1097 | 95533d5f | Christoph Hellwig | " standard output stream (with -v option) for subsequent inspection.\n"
|
1098 | e432cef9 | Christoph Hellwig | " The read is performed asynchronously and the aio_flush command must be\n"
|
1099 | e432cef9 | Christoph Hellwig | " used to ensure all outstanding aio requests have been completed\n"
|
1100 | 95533d5f | Christoph Hellwig | " -C, -- report statistics in a machine parsable format\n"
|
1101 | 95533d5f | Christoph Hellwig | " -P, -- use a pattern to verify read data\n"
|
1102 | 95533d5f | Christoph Hellwig | " -v, -- dump buffer to standard output\n"
|
1103 | 95533d5f | Christoph Hellwig | " -q, -- quite mode, do not show I/O statistics\n"
|
1104 | 95533d5f | Christoph Hellwig | "\n");
|
1105 | 95533d5f | Christoph Hellwig | } |
1106 | 95533d5f | Christoph Hellwig | |
1107 | 22a2bdcb | Blue Swirl | static int aio_read_f(int argc, char **argv); |
1108 | 22a2bdcb | Blue Swirl | |
1109 | 22a2bdcb | Blue Swirl | static const cmdinfo_t aio_read_cmd = { |
1110 | 22a2bdcb | Blue Swirl | .name = "aio_read",
|
1111 | 22a2bdcb | Blue Swirl | .cfunc = aio_read_f, |
1112 | 22a2bdcb | Blue Swirl | .argmin = 2,
|
1113 | 22a2bdcb | Blue Swirl | .argmax = -1,
|
1114 | 22a2bdcb | Blue Swirl | .args = "[-Cqv] [-P pattern ] off len [len..]",
|
1115 | 22a2bdcb | Blue Swirl | .oneline = "asynchronously reads a number of bytes",
|
1116 | 22a2bdcb | Blue Swirl | .help = aio_read_help, |
1117 | 22a2bdcb | Blue Swirl | }; |
1118 | 22a2bdcb | Blue Swirl | |
1119 | 95533d5f | Christoph Hellwig | static int |
1120 | 95533d5f | Christoph Hellwig | aio_read_f(int argc, char **argv) |
1121 | 95533d5f | Christoph Hellwig | { |
1122 | cf57298a | Christoph Hellwig | int nr_iov, c;
|
1123 | 95533d5f | Christoph Hellwig | struct aio_ctx *ctx = calloc(1, sizeof(struct aio_ctx)); |
1124 | 95533d5f | Christoph Hellwig | BlockDriverAIOCB *acb; |
1125 | 95533d5f | Christoph Hellwig | |
1126 | 95533d5f | Christoph Hellwig | while ((c = getopt(argc, argv, "CP:qv")) != EOF) { |
1127 | 95533d5f | Christoph Hellwig | switch (c) {
|
1128 | 95533d5f | Christoph Hellwig | case 'C': |
1129 | 95533d5f | Christoph Hellwig | ctx->Cflag = 1;
|
1130 | 95533d5f | Christoph Hellwig | break;
|
1131 | 95533d5f | Christoph Hellwig | case 'P': |
1132 | 95533d5f | Christoph Hellwig | ctx->Pflag = 1;
|
1133 | cf070d7e | Christoph Hellwig | ctx->pattern = parse_pattern(optarg); |
1134 | cf070d7e | Christoph Hellwig | if (ctx->pattern < 0) |
1135 | cf070d7e | Christoph Hellwig | return 0; |
1136 | 95533d5f | Christoph Hellwig | break;
|
1137 | 95533d5f | Christoph Hellwig | case 'q': |
1138 | 95533d5f | Christoph Hellwig | ctx->qflag = 1;
|
1139 | 95533d5f | Christoph Hellwig | break;
|
1140 | 95533d5f | Christoph Hellwig | case 'v': |
1141 | 95533d5f | Christoph Hellwig | ctx->vflag = 1;
|
1142 | 95533d5f | Christoph Hellwig | break;
|
1143 | 95533d5f | Christoph Hellwig | default:
|
1144 | 7d8abfcb | Kevin Wolf | free(ctx); |
1145 | 95533d5f | Christoph Hellwig | return command_usage(&aio_read_cmd);
|
1146 | 95533d5f | Christoph Hellwig | } |
1147 | 95533d5f | Christoph Hellwig | } |
1148 | 95533d5f | Christoph Hellwig | |
1149 | 7d8abfcb | Kevin Wolf | if (optind > argc - 2) { |
1150 | 7d8abfcb | Kevin Wolf | free(ctx); |
1151 | 95533d5f | Christoph Hellwig | return command_usage(&aio_read_cmd);
|
1152 | 7d8abfcb | Kevin Wolf | } |
1153 | 95533d5f | Christoph Hellwig | |
1154 | 95533d5f | Christoph Hellwig | ctx->offset = cvtnum(argv[optind]); |
1155 | 95533d5f | Christoph Hellwig | if (ctx->offset < 0) { |
1156 | 95533d5f | Christoph Hellwig | printf("non-numeric length argument -- %s\n", argv[optind]);
|
1157 | 7d8abfcb | Kevin Wolf | free(ctx); |
1158 | 95533d5f | Christoph Hellwig | return 0; |
1159 | 95533d5f | Christoph Hellwig | } |
1160 | 95533d5f | Christoph Hellwig | optind++; |
1161 | 95533d5f | Christoph Hellwig | |
1162 | 95533d5f | Christoph Hellwig | if (ctx->offset & 0x1ff) { |
1163 | 0bfcd599 | Blue Swirl | printf("offset %" PRId64 " is not sector aligned\n", |
1164 | 0bfcd599 | Blue Swirl | ctx->offset); |
1165 | 7d8abfcb | Kevin Wolf | free(ctx); |
1166 | 95533d5f | Christoph Hellwig | return 0; |
1167 | 95533d5f | Christoph Hellwig | } |
1168 | 95533d5f | Christoph Hellwig | |
1169 | 95533d5f | Christoph Hellwig | nr_iov = argc - optind; |
1170 | cf57298a | Christoph Hellwig | ctx->buf = create_iovec(&ctx->qiov, &argv[optind], nr_iov, 0xab);
|
1171 | 95533d5f | Christoph Hellwig | |
1172 | 95533d5f | Christoph Hellwig | gettimeofday(&ctx->t1, NULL);
|
1173 | 95533d5f | Christoph Hellwig | acb = bdrv_aio_readv(bs, ctx->offset >> 9, &ctx->qiov,
|
1174 | 95533d5f | Christoph Hellwig | ctx->qiov.size >> 9, aio_read_done, ctx);
|
1175 | 7d8abfcb | Kevin Wolf | if (!acb) {
|
1176 | 7d8abfcb | Kevin Wolf | free(ctx->buf); |
1177 | 7d8abfcb | Kevin Wolf | free(ctx); |
1178 | 95533d5f | Christoph Hellwig | return -EIO;
|
1179 | 7d8abfcb | Kevin Wolf | } |
1180 | 95533d5f | Christoph Hellwig | |
1181 | 95533d5f | Christoph Hellwig | return 0; |
1182 | 95533d5f | Christoph Hellwig | } |
1183 | 95533d5f | Christoph Hellwig | |
1184 | 95533d5f | Christoph Hellwig | static void |
1185 | 95533d5f | Christoph Hellwig | aio_write_help(void)
|
1186 | 95533d5f | Christoph Hellwig | { |
1187 | 95533d5f | Christoph Hellwig | printf( |
1188 | 95533d5f | Christoph Hellwig | "\n"
|
1189 | 95533d5f | Christoph Hellwig | " asynchronously writes a range of bytes from the given offset source \n"
|
1190 | 95533d5f | Christoph Hellwig | " from multiple buffers\n"
|
1191 | 95533d5f | Christoph Hellwig | "\n"
|
1192 | 95533d5f | Christoph Hellwig | " Example:\n"
|
1193 | 95533d5f | Christoph Hellwig | " 'aio_write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
|
1194 | 95533d5f | Christoph Hellwig | "\n"
|
1195 | 95533d5f | Christoph Hellwig | " Writes into a segment of the currently open file, using a buffer\n"
|
1196 | 95533d5f | Christoph Hellwig | " filled with a set pattern (0xcdcdcdcd).\n"
|
1197 | e432cef9 | Christoph Hellwig | " The write is performed asynchronously and the aio_flush command must be\n"
|
1198 | e432cef9 | Christoph Hellwig | " used to ensure all outstanding aio requests have been completed\n"
|
1199 | 95533d5f | Christoph Hellwig | " -P, -- use different pattern to fill file\n"
|
1200 | 95533d5f | Christoph Hellwig | " -C, -- report statistics in a machine parsable format\n"
|
1201 | 95533d5f | Christoph Hellwig | " -q, -- quite mode, do not show I/O statistics\n"
|
1202 | 95533d5f | Christoph Hellwig | "\n");
|
1203 | 95533d5f | Christoph Hellwig | } |
1204 | 95533d5f | Christoph Hellwig | |
1205 | 22a2bdcb | Blue Swirl | static int aio_write_f(int argc, char **argv); |
1206 | 22a2bdcb | Blue Swirl | |
1207 | 22a2bdcb | Blue Swirl | static const cmdinfo_t aio_write_cmd = { |
1208 | 22a2bdcb | Blue Swirl | .name = "aio_write",
|
1209 | 22a2bdcb | Blue Swirl | .cfunc = aio_write_f, |
1210 | 22a2bdcb | Blue Swirl | .argmin = 2,
|
1211 | 22a2bdcb | Blue Swirl | .argmax = -1,
|
1212 | 22a2bdcb | Blue Swirl | .args = "[-Cq] [-P pattern ] off len [len..]",
|
1213 | 22a2bdcb | Blue Swirl | .oneline = "asynchronously writes a number of bytes",
|
1214 | 22a2bdcb | Blue Swirl | .help = aio_write_help, |
1215 | 22a2bdcb | Blue Swirl | }; |
1216 | 95533d5f | Christoph Hellwig | |
1217 | 95533d5f | Christoph Hellwig | static int |
1218 | 95533d5f | Christoph Hellwig | aio_write_f(int argc, char **argv) |
1219 | 95533d5f | Christoph Hellwig | { |
1220 | cf57298a | Christoph Hellwig | int nr_iov, c;
|
1221 | 95533d5f | Christoph Hellwig | int pattern = 0xcd; |
1222 | 95533d5f | Christoph Hellwig | struct aio_ctx *ctx = calloc(1, sizeof(struct aio_ctx)); |
1223 | 95533d5f | Christoph Hellwig | BlockDriverAIOCB *acb; |
1224 | 95533d5f | Christoph Hellwig | |
1225 | 95533d5f | Christoph Hellwig | while ((c = getopt(argc, argv, "CqP:")) != EOF) { |
1226 | 95533d5f | Christoph Hellwig | switch (c) {
|
1227 | 95533d5f | Christoph Hellwig | case 'C': |
1228 | 95533d5f | Christoph Hellwig | ctx->Cflag = 1;
|
1229 | 95533d5f | Christoph Hellwig | break;
|
1230 | 95533d5f | Christoph Hellwig | case 'q': |
1231 | 95533d5f | Christoph Hellwig | ctx->qflag = 1;
|
1232 | 95533d5f | Christoph Hellwig | break;
|
1233 | 95533d5f | Christoph Hellwig | case 'P': |
1234 | cf070d7e | Christoph Hellwig | pattern = parse_pattern(optarg); |
1235 | cf070d7e | Christoph Hellwig | if (pattern < 0) |
1236 | cf070d7e | Christoph Hellwig | return 0; |
1237 | 95533d5f | Christoph Hellwig | break;
|
1238 | 95533d5f | Christoph Hellwig | default:
|
1239 | 7d8abfcb | Kevin Wolf | free(ctx); |
1240 | 95533d5f | Christoph Hellwig | return command_usage(&aio_write_cmd);
|
1241 | 95533d5f | Christoph Hellwig | } |
1242 | 95533d5f | Christoph Hellwig | } |
1243 | 95533d5f | Christoph Hellwig | |
1244 | 7d8abfcb | Kevin Wolf | if (optind > argc - 2) { |
1245 | 7d8abfcb | Kevin Wolf | free(ctx); |
1246 | 95533d5f | Christoph Hellwig | return command_usage(&aio_write_cmd);
|
1247 | 7d8abfcb | Kevin Wolf | } |
1248 | 95533d5f | Christoph Hellwig | |
1249 | 95533d5f | Christoph Hellwig | ctx->offset = cvtnum(argv[optind]); |
1250 | 95533d5f | Christoph Hellwig | if (ctx->offset < 0) { |
1251 | 95533d5f | Christoph Hellwig | printf("non-numeric length argument -- %s\n", argv[optind]);
|
1252 | 7d8abfcb | Kevin Wolf | free(ctx); |
1253 | 95533d5f | Christoph Hellwig | return 0; |
1254 | 95533d5f | Christoph Hellwig | } |
1255 | 95533d5f | Christoph Hellwig | optind++; |
1256 | 95533d5f | Christoph Hellwig | |
1257 | 95533d5f | Christoph Hellwig | if (ctx->offset & 0x1ff) { |
1258 | 0bfcd599 | Blue Swirl | printf("offset %" PRId64 " is not sector aligned\n", |
1259 | 0bfcd599 | Blue Swirl | ctx->offset); |
1260 | 7d8abfcb | Kevin Wolf | free(ctx); |
1261 | 95533d5f | Christoph Hellwig | return 0; |
1262 | 95533d5f | Christoph Hellwig | } |
1263 | 95533d5f | Christoph Hellwig | |
1264 | 95533d5f | Christoph Hellwig | nr_iov = argc - optind; |
1265 | cf57298a | Christoph Hellwig | ctx->buf = create_iovec(&ctx->qiov, &argv[optind], nr_iov, pattern); |
1266 | 95533d5f | Christoph Hellwig | |
1267 | 95533d5f | Christoph Hellwig | gettimeofday(&ctx->t1, NULL);
|
1268 | 95533d5f | Christoph Hellwig | acb = bdrv_aio_writev(bs, ctx->offset >> 9, &ctx->qiov,
|
1269 | 95533d5f | Christoph Hellwig | ctx->qiov.size >> 9, aio_write_done, ctx);
|
1270 | 7d8abfcb | Kevin Wolf | if (!acb) {
|
1271 | 7d8abfcb | Kevin Wolf | free(ctx->buf); |
1272 | 7d8abfcb | Kevin Wolf | free(ctx); |
1273 | 95533d5f | Christoph Hellwig | return -EIO;
|
1274 | 7d8abfcb | Kevin Wolf | } |
1275 | 95533d5f | Christoph Hellwig | |
1276 | 95533d5f | Christoph Hellwig | return 0; |
1277 | 95533d5f | Christoph Hellwig | } |
1278 | 95533d5f | Christoph Hellwig | |
1279 | 95533d5f | Christoph Hellwig | static int |
1280 | 95533d5f | Christoph Hellwig | aio_flush_f(int argc, char **argv) |
1281 | 95533d5f | Christoph Hellwig | { |
1282 | 95533d5f | Christoph Hellwig | qemu_aio_flush(); |
1283 | 95533d5f | Christoph Hellwig | return 0; |
1284 | 95533d5f | Christoph Hellwig | } |
1285 | 95533d5f | Christoph Hellwig | |
1286 | 95533d5f | Christoph Hellwig | static const cmdinfo_t aio_flush_cmd = { |
1287 | 95533d5f | Christoph Hellwig | .name = "aio_flush",
|
1288 | 95533d5f | Christoph Hellwig | .cfunc = aio_flush_f, |
1289 | e432cef9 | Christoph Hellwig | .oneline = "completes all outstanding aio requests"
|
1290 | 95533d5f | Christoph Hellwig | }; |
1291 | 95533d5f | Christoph Hellwig | |
1292 | e3aff4f6 | aliguori | static int |
1293 | e3aff4f6 | aliguori | flush_f(int argc, char **argv) |
1294 | e3aff4f6 | aliguori | { |
1295 | e3aff4f6 | aliguori | bdrv_flush(bs); |
1296 | e3aff4f6 | aliguori | return 0; |
1297 | e3aff4f6 | aliguori | } |
1298 | e3aff4f6 | aliguori | |
1299 | e3aff4f6 | aliguori | static const cmdinfo_t flush_cmd = { |
1300 | e3aff4f6 | aliguori | .name = "flush",
|
1301 | e3aff4f6 | aliguori | .altname = "f",
|
1302 | e3aff4f6 | aliguori | .cfunc = flush_f, |
1303 | e3aff4f6 | aliguori | .oneline = "flush all in-core file state to disk",
|
1304 | e3aff4f6 | aliguori | }; |
1305 | e3aff4f6 | aliguori | |
1306 | e3aff4f6 | aliguori | static int |
1307 | e3aff4f6 | aliguori | truncate_f(int argc, char **argv) |
1308 | e3aff4f6 | aliguori | { |
1309 | e3aff4f6 | aliguori | int64_t offset; |
1310 | e3aff4f6 | aliguori | int ret;
|
1311 | e3aff4f6 | aliguori | |
1312 | e3aff4f6 | aliguori | offset = cvtnum(argv[1]);
|
1313 | e3aff4f6 | aliguori | if (offset < 0) { |
1314 | e3aff4f6 | aliguori | printf("non-numeric truncate argument -- %s\n", argv[1]); |
1315 | e3aff4f6 | aliguori | return 0; |
1316 | e3aff4f6 | aliguori | } |
1317 | e3aff4f6 | aliguori | |
1318 | e3aff4f6 | aliguori | ret = bdrv_truncate(bs, offset); |
1319 | e3aff4f6 | aliguori | if (ret < 0) { |
1320 | 0923c577 | Kevin Wolf | printf("truncate: %s\n", strerror(-ret));
|
1321 | e3aff4f6 | aliguori | return 0; |
1322 | e3aff4f6 | aliguori | } |
1323 | e3aff4f6 | aliguori | |
1324 | e3aff4f6 | aliguori | return 0; |
1325 | e3aff4f6 | aliguori | } |
1326 | e3aff4f6 | aliguori | |
1327 | e3aff4f6 | aliguori | static const cmdinfo_t truncate_cmd = { |
1328 | e3aff4f6 | aliguori | .name = "truncate",
|
1329 | e3aff4f6 | aliguori | .altname = "t",
|
1330 | e3aff4f6 | aliguori | .cfunc = truncate_f, |
1331 | e3aff4f6 | aliguori | .argmin = 1,
|
1332 | e3aff4f6 | aliguori | .argmax = 1,
|
1333 | e3aff4f6 | aliguori | .args = "off",
|
1334 | e3aff4f6 | aliguori | .oneline = "truncates the current file at the given offset",
|
1335 | e3aff4f6 | aliguori | }; |
1336 | e3aff4f6 | aliguori | |
1337 | e3aff4f6 | aliguori | static int |
1338 | e3aff4f6 | aliguori | length_f(int argc, char **argv) |
1339 | e3aff4f6 | aliguori | { |
1340 | e3aff4f6 | aliguori | int64_t size; |
1341 | e3aff4f6 | aliguori | char s1[64]; |
1342 | e3aff4f6 | aliguori | |
1343 | e3aff4f6 | aliguori | size = bdrv_getlength(bs); |
1344 | e3aff4f6 | aliguori | if (size < 0) { |
1345 | 0923c577 | Kevin Wolf | printf("getlength: %s\n", strerror(-size));
|
1346 | e3aff4f6 | aliguori | return 0; |
1347 | e3aff4f6 | aliguori | } |
1348 | e3aff4f6 | aliguori | |
1349 | e3aff4f6 | aliguori | cvtstr(size, s1, sizeof(s1));
|
1350 | e3aff4f6 | aliguori | printf("%s\n", s1);
|
1351 | e3aff4f6 | aliguori | return 0; |
1352 | e3aff4f6 | aliguori | } |
1353 | e3aff4f6 | aliguori | |
1354 | e3aff4f6 | aliguori | |
1355 | e3aff4f6 | aliguori | static const cmdinfo_t length_cmd = { |
1356 | e3aff4f6 | aliguori | .name = "length",
|
1357 | e3aff4f6 | aliguori | .altname = "l",
|
1358 | e3aff4f6 | aliguori | .cfunc = length_f, |
1359 | e3aff4f6 | aliguori | .oneline = "gets the length of the current file",
|
1360 | e3aff4f6 | aliguori | }; |
1361 | e3aff4f6 | aliguori | |
1362 | e3aff4f6 | aliguori | |
1363 | e3aff4f6 | aliguori | static int |
1364 | e3aff4f6 | aliguori | info_f(int argc, char **argv) |
1365 | e3aff4f6 | aliguori | { |
1366 | e3aff4f6 | aliguori | BlockDriverInfo bdi; |
1367 | e3aff4f6 | aliguori | char s1[64], s2[64]; |
1368 | e3aff4f6 | aliguori | int ret;
|
1369 | e3aff4f6 | aliguori | |
1370 | e3aff4f6 | aliguori | if (bs->drv && bs->drv->format_name)
|
1371 | e3aff4f6 | aliguori | printf("format name: %s\n", bs->drv->format_name);
|
1372 | e3aff4f6 | aliguori | if (bs->drv && bs->drv->protocol_name)
|
1373 | e3aff4f6 | aliguori | printf("format name: %s\n", bs->drv->protocol_name);
|
1374 | e3aff4f6 | aliguori | |
1375 | e3aff4f6 | aliguori | ret = bdrv_get_info(bs, &bdi); |
1376 | e3aff4f6 | aliguori | if (ret)
|
1377 | e3aff4f6 | aliguori | return 0; |
1378 | e3aff4f6 | aliguori | |
1379 | e3aff4f6 | aliguori | cvtstr(bdi.cluster_size, s1, sizeof(s1));
|
1380 | e3aff4f6 | aliguori | cvtstr(bdi.vm_state_offset, s2, sizeof(s2));
|
1381 | e3aff4f6 | aliguori | |
1382 | e3aff4f6 | aliguori | printf("cluster size: %s\n", s1);
|
1383 | e3aff4f6 | aliguori | printf("vm state offset: %s\n", s2);
|
1384 | e3aff4f6 | aliguori | |
1385 | e3aff4f6 | aliguori | return 0; |
1386 | e3aff4f6 | aliguori | } |
1387 | e3aff4f6 | aliguori | |
1388 | e3aff4f6 | aliguori | |
1389 | e3aff4f6 | aliguori | |
1390 | e3aff4f6 | aliguori | static const cmdinfo_t info_cmd = { |
1391 | e3aff4f6 | aliguori | .name = "info",
|
1392 | e3aff4f6 | aliguori | .altname = "i",
|
1393 | e3aff4f6 | aliguori | .cfunc = info_f, |
1394 | e3aff4f6 | aliguori | .oneline = "prints information about the current file",
|
1395 | e3aff4f6 | aliguori | }; |
1396 | e3aff4f6 | aliguori | |
1397 | e3aff4f6 | aliguori | static int |
1398 | e3aff4f6 | aliguori | alloc_f(int argc, char **argv) |
1399 | e3aff4f6 | aliguori | { |
1400 | e3aff4f6 | aliguori | int64_t offset; |
1401 | a7824a88 | Kevin Wolf | int nb_sectors, remaining;
|
1402 | e3aff4f6 | aliguori | char s1[64]; |
1403 | a7824a88 | Kevin Wolf | int num, sum_alloc;
|
1404 | e3aff4f6 | aliguori | int ret;
|
1405 | e3aff4f6 | aliguori | |
1406 | e3aff4f6 | aliguori | offset = cvtnum(argv[1]);
|
1407 | e3aff4f6 | aliguori | if (offset & 0x1ff) { |
1408 | 0bfcd599 | Blue Swirl | printf("offset %" PRId64 " is not sector aligned\n", |
1409 | 0bfcd599 | Blue Swirl | offset); |
1410 | e3aff4f6 | aliguori | return 0; |
1411 | e3aff4f6 | aliguori | } |
1412 | e3aff4f6 | aliguori | |
1413 | e3aff4f6 | aliguori | if (argc == 3) |
1414 | e3aff4f6 | aliguori | nb_sectors = cvtnum(argv[2]);
|
1415 | e3aff4f6 | aliguori | else
|
1416 | e3aff4f6 | aliguori | nb_sectors = 1;
|
1417 | e3aff4f6 | aliguori | |
1418 | a7824a88 | Kevin Wolf | remaining = nb_sectors; |
1419 | a7824a88 | Kevin Wolf | sum_alloc = 0;
|
1420 | a7824a88 | Kevin Wolf | while (remaining) {
|
1421 | a7824a88 | Kevin Wolf | ret = bdrv_is_allocated(bs, offset >> 9, nb_sectors, &num);
|
1422 | a7824a88 | Kevin Wolf | remaining -= num; |
1423 | a7824a88 | Kevin Wolf | if (ret) {
|
1424 | a7824a88 | Kevin Wolf | sum_alloc += num; |
1425 | a7824a88 | Kevin Wolf | } |
1426 | a7824a88 | Kevin Wolf | } |
1427 | e3aff4f6 | aliguori | |
1428 | e3aff4f6 | aliguori | cvtstr(offset, s1, sizeof(s1));
|
1429 | e3aff4f6 | aliguori | |
1430 | b407a81e | Stefan Hajnoczi | printf("%d/%d sectors allocated at offset %s\n",
|
1431 | b407a81e | Stefan Hajnoczi | sum_alloc, nb_sectors, s1); |
1432 | e3aff4f6 | aliguori | return 0; |
1433 | e3aff4f6 | aliguori | } |
1434 | e3aff4f6 | aliguori | |
1435 | e3aff4f6 | aliguori | static const cmdinfo_t alloc_cmd = { |
1436 | e3aff4f6 | aliguori | .name = "alloc",
|
1437 | e3aff4f6 | aliguori | .altname = "a",
|
1438 | e3aff4f6 | aliguori | .argmin = 1,
|
1439 | e3aff4f6 | aliguori | .argmax = 2,
|
1440 | e3aff4f6 | aliguori | .cfunc = alloc_f, |
1441 | e3aff4f6 | aliguori | .args = "off [sectors]",
|
1442 | e3aff4f6 | aliguori | .oneline = "checks if a sector is present in the file",
|
1443 | e3aff4f6 | aliguori | }; |
1444 | e3aff4f6 | aliguori | |
1445 | e3aff4f6 | aliguori | static int |
1446 | e3aff4f6 | aliguori | close_f(int argc, char **argv) |
1447 | e3aff4f6 | aliguori | { |
1448 | e3aff4f6 | aliguori | bdrv_close(bs); |
1449 | e3aff4f6 | aliguori | bs = NULL;
|
1450 | e3aff4f6 | aliguori | return 0; |
1451 | e3aff4f6 | aliguori | } |
1452 | e3aff4f6 | aliguori | |
1453 | e3aff4f6 | aliguori | static const cmdinfo_t close_cmd = { |
1454 | e3aff4f6 | aliguori | .name = "close",
|
1455 | e3aff4f6 | aliguori | .altname = "c",
|
1456 | e3aff4f6 | aliguori | .cfunc = close_f, |
1457 | e3aff4f6 | aliguori | .oneline = "close the current open file",
|
1458 | e3aff4f6 | aliguori | }; |
1459 | e3aff4f6 | aliguori | |
1460 | 9c4bab26 | Christoph Hellwig | static int openfile(char *name, int flags, int growable) |
1461 | e3aff4f6 | aliguori | { |
1462 | e3aff4f6 | aliguori | if (bs) {
|
1463 | e3aff4f6 | aliguori | fprintf(stderr, "file open already, try 'help close'\n");
|
1464 | e3aff4f6 | aliguori | return 1; |
1465 | e3aff4f6 | aliguori | } |
1466 | e3aff4f6 | aliguori | |
1467 | 1db6947d | Christoph Hellwig | if (growable) {
|
1468 | 6db95603 | Christoph Hellwig | if (bdrv_file_open(&bs, name, flags)) {
|
1469 | 6db95603 | Christoph Hellwig | fprintf(stderr, "%s: can't open device %s\n", progname, name);
|
1470 | 6db95603 | Christoph Hellwig | return 1; |
1471 | 6db95603 | Christoph Hellwig | } |
1472 | 6db95603 | Christoph Hellwig | } else {
|
1473 | 6db95603 | Christoph Hellwig | bs = bdrv_new("hda");
|
1474 | 6db95603 | Christoph Hellwig | if (!bs)
|
1475 | 6db95603 | Christoph Hellwig | return 1; |
1476 | 6db95603 | Christoph Hellwig | |
1477 | 6db95603 | Christoph Hellwig | if (bdrv_open(bs, name, flags, NULL) < 0) { |
1478 | 6db95603 | Christoph Hellwig | fprintf(stderr, "%s: can't open device %s\n", progname, name);
|
1479 | 6db95603 | Christoph Hellwig | bs = NULL;
|
1480 | 6db95603 | Christoph Hellwig | return 1; |
1481 | 6db95603 | Christoph Hellwig | } |
1482 | e3aff4f6 | aliguori | } |
1483 | e3aff4f6 | aliguori | |
1484 | e3aff4f6 | aliguori | return 0; |
1485 | e3aff4f6 | aliguori | } |
1486 | e3aff4f6 | aliguori | |
1487 | e3aff4f6 | aliguori | static void |
1488 | e3aff4f6 | aliguori | open_help(void)
|
1489 | e3aff4f6 | aliguori | { |
1490 | e3aff4f6 | aliguori | printf( |
1491 | e3aff4f6 | aliguori | "\n"
|
1492 | e3aff4f6 | aliguori | " opens a new file in the requested mode\n"
|
1493 | e3aff4f6 | aliguori | "\n"
|
1494 | e3aff4f6 | aliguori | " Example:\n"
|
1495 | e3aff4f6 | aliguori | " 'open -Cn /tmp/data' - creates/opens data file read-write and uncached\n"
|
1496 | e3aff4f6 | aliguori | "\n"
|
1497 | e3aff4f6 | aliguori | " Opens a file for subsequent use by all of the other qemu-io commands.\n"
|
1498 | e3aff4f6 | aliguori | " -r, -- open file read-only\n"
|
1499 | e3aff4f6 | aliguori | " -s, -- use snapshot file\n"
|
1500 | e3aff4f6 | aliguori | " -n, -- disable host cache\n"
|
1501 | 9c4bab26 | Christoph Hellwig | " -g, -- allow file to grow (only applies to protocols)"
|
1502 | e3aff4f6 | aliguori | "\n");
|
1503 | e3aff4f6 | aliguori | } |
1504 | e3aff4f6 | aliguori | |
1505 | 22a2bdcb | Blue Swirl | static int open_f(int argc, char **argv); |
1506 | 22a2bdcb | Blue Swirl | |
1507 | 22a2bdcb | Blue Swirl | static const cmdinfo_t open_cmd = { |
1508 | 22a2bdcb | Blue Swirl | .name = "open",
|
1509 | 22a2bdcb | Blue Swirl | .altname = "o",
|
1510 | 22a2bdcb | Blue Swirl | .cfunc = open_f, |
1511 | 22a2bdcb | Blue Swirl | .argmin = 1,
|
1512 | 22a2bdcb | Blue Swirl | .argmax = -1,
|
1513 | 22a2bdcb | Blue Swirl | .flags = CMD_NOFILE_OK, |
1514 | 22a2bdcb | Blue Swirl | .args = "[-Crsn] [path]",
|
1515 | 22a2bdcb | Blue Swirl | .oneline = "open the file specified by path",
|
1516 | 22a2bdcb | Blue Swirl | .help = open_help, |
1517 | 22a2bdcb | Blue Swirl | }; |
1518 | e3aff4f6 | aliguori | |
1519 | e3aff4f6 | aliguori | static int |
1520 | e3aff4f6 | aliguori | open_f(int argc, char **argv) |
1521 | e3aff4f6 | aliguori | { |
1522 | e3aff4f6 | aliguori | int flags = 0; |
1523 | e3aff4f6 | aliguori | int readonly = 0; |
1524 | 9c4bab26 | Christoph Hellwig | int growable = 0; |
1525 | e3aff4f6 | aliguori | int c;
|
1526 | e3aff4f6 | aliguori | |
1527 | 9a2d77ad | Christoph Hellwig | while ((c = getopt(argc, argv, "snrg")) != EOF) { |
1528 | e3aff4f6 | aliguori | switch (c) {
|
1529 | e3aff4f6 | aliguori | case 's': |
1530 | e3aff4f6 | aliguori | flags |= BDRV_O_SNAPSHOT; |
1531 | e3aff4f6 | aliguori | break;
|
1532 | e3aff4f6 | aliguori | case 'n': |
1533 | e3aff4f6 | aliguori | flags |= BDRV_O_NOCACHE; |
1534 | e3aff4f6 | aliguori | break;
|
1535 | e3aff4f6 | aliguori | case 'r': |
1536 | e3aff4f6 | aliguori | readonly = 1;
|
1537 | e3aff4f6 | aliguori | break;
|
1538 | 9c4bab26 | Christoph Hellwig | case 'g': |
1539 | 9c4bab26 | Christoph Hellwig | growable = 1;
|
1540 | 9c4bab26 | Christoph Hellwig | break;
|
1541 | e3aff4f6 | aliguori | default:
|
1542 | e3aff4f6 | aliguori | return command_usage(&open_cmd);
|
1543 | e3aff4f6 | aliguori | } |
1544 | e3aff4f6 | aliguori | } |
1545 | e3aff4f6 | aliguori | |
1546 | f5edb014 | Naphtali Sprei | if (!readonly) {
|
1547 | f5edb014 | Naphtali Sprei | flags |= BDRV_O_RDWR; |
1548 | f5edb014 | Naphtali Sprei | } |
1549 | e3aff4f6 | aliguori | |
1550 | e3aff4f6 | aliguori | if (optind != argc - 1) |
1551 | e3aff4f6 | aliguori | return command_usage(&open_cmd);
|
1552 | e3aff4f6 | aliguori | |
1553 | 9c4bab26 | Christoph Hellwig | return openfile(argv[optind], flags, growable);
|
1554 | e3aff4f6 | aliguori | } |
1555 | e3aff4f6 | aliguori | |
1556 | e3aff4f6 | aliguori | static int |
1557 | e3aff4f6 | aliguori | init_args_command( |
1558 | e3aff4f6 | aliguori | int index)
|
1559 | e3aff4f6 | aliguori | { |
1560 | e3aff4f6 | aliguori | /* only one device allowed so far */
|
1561 | e3aff4f6 | aliguori | if (index >= 1) |
1562 | e3aff4f6 | aliguori | return 0; |
1563 | e3aff4f6 | aliguori | return ++index;
|
1564 | e3aff4f6 | aliguori | } |
1565 | e3aff4f6 | aliguori | |
1566 | e3aff4f6 | aliguori | static int |
1567 | e3aff4f6 | aliguori | init_check_command( |
1568 | e3aff4f6 | aliguori | const cmdinfo_t *ct)
|
1569 | e3aff4f6 | aliguori | { |
1570 | e3aff4f6 | aliguori | if (ct->flags & CMD_FLAG_GLOBAL)
|
1571 | e3aff4f6 | aliguori | return 1; |
1572 | e3aff4f6 | aliguori | if (!(ct->flags & CMD_NOFILE_OK) && !bs) {
|
1573 | e3aff4f6 | aliguori | fprintf(stderr, "no file open, try 'help open'\n");
|
1574 | e3aff4f6 | aliguori | return 0; |
1575 | e3aff4f6 | aliguori | } |
1576 | e3aff4f6 | aliguori | return 1; |
1577 | e3aff4f6 | aliguori | } |
1578 | e3aff4f6 | aliguori | |
1579 | e3aff4f6 | aliguori | static void usage(const char *name) |
1580 | e3aff4f6 | aliguori | { |
1581 | e3aff4f6 | aliguori | printf( |
1582 | 9a2d77ad | Christoph Hellwig | "Usage: %s [-h] [-V] [-rsnm] [-c cmd] ... [file]\n"
|
1583 | 84844a20 | Stefan Weil | "QEMU Disk exerciser\n"
|
1584 | e3aff4f6 | aliguori | "\n"
|
1585 | e3aff4f6 | aliguori | " -c, --cmd command to execute\n"
|
1586 | e3aff4f6 | aliguori | " -r, --read-only export read-only\n"
|
1587 | e3aff4f6 | aliguori | " -s, --snapshot use snapshot file\n"
|
1588 | e3aff4f6 | aliguori | " -n, --nocache disable host cache\n"
|
1589 | 1db6947d | Christoph Hellwig | " -g, --growable allow file to grow (only applies to protocols)\n"
|
1590 | e3aff4f6 | aliguori | " -m, --misalign misalign allocations for O_DIRECT\n"
|
1591 | 5c6c3a6c | Christoph Hellwig | " -k, --native-aio use kernel AIO implementation (on Linux only)\n"
|
1592 | e3aff4f6 | aliguori | " -h, --help display this help and exit\n"
|
1593 | e3aff4f6 | aliguori | " -V, --version output version information and exit\n"
|
1594 | e3aff4f6 | aliguori | "\n",
|
1595 | e3aff4f6 | aliguori | name); |
1596 | e3aff4f6 | aliguori | } |
1597 | e3aff4f6 | aliguori | |
1598 | e3aff4f6 | aliguori | |
1599 | e3aff4f6 | aliguori | int main(int argc, char **argv) |
1600 | e3aff4f6 | aliguori | { |
1601 | e3aff4f6 | aliguori | int readonly = 0; |
1602 | 9c4bab26 | Christoph Hellwig | int growable = 0; |
1603 | 9a2d77ad | Christoph Hellwig | const char *sopt = "hVc:rsnmgk"; |
1604 | b32bb952 | Blue Swirl | const struct option lopt[] = { |
1605 | 660f11be | Blue Swirl | { "help", 0, NULL, 'h' }, |
1606 | 660f11be | Blue Swirl | { "version", 0, NULL, 'V' }, |
1607 | 660f11be | Blue Swirl | { "offset", 1, NULL, 'o' }, |
1608 | 660f11be | Blue Swirl | { "cmd", 1, NULL, 'c' }, |
1609 | 660f11be | Blue Swirl | { "read-only", 0, NULL, 'r' }, |
1610 | 660f11be | Blue Swirl | { "snapshot", 0, NULL, 's' }, |
1611 | 660f11be | Blue Swirl | { "nocache", 0, NULL, 'n' }, |
1612 | 660f11be | Blue Swirl | { "misalign", 0, NULL, 'm' }, |
1613 | 660f11be | Blue Swirl | { "growable", 0, NULL, 'g' }, |
1614 | 5c6c3a6c | Christoph Hellwig | { "native-aio", 0, NULL, 'k' }, |
1615 | 660f11be | Blue Swirl | { NULL, 0, NULL, 0 } |
1616 | e3aff4f6 | aliguori | }; |
1617 | e3aff4f6 | aliguori | int c;
|
1618 | e3aff4f6 | aliguori | int opt_index = 0; |
1619 | e3aff4f6 | aliguori | int flags = 0; |
1620 | e3aff4f6 | aliguori | |
1621 | e3aff4f6 | aliguori | progname = basename(argv[0]);
|
1622 | e3aff4f6 | aliguori | |
1623 | e3aff4f6 | aliguori | while ((c = getopt_long(argc, argv, sopt, lopt, &opt_index)) != -1) { |
1624 | e3aff4f6 | aliguori | switch (c) {
|
1625 | e3aff4f6 | aliguori | case 's': |
1626 | e3aff4f6 | aliguori | flags |= BDRV_O_SNAPSHOT; |
1627 | e3aff4f6 | aliguori | break;
|
1628 | e3aff4f6 | aliguori | case 'n': |
1629 | e3aff4f6 | aliguori | flags |= BDRV_O_NOCACHE; |
1630 | e3aff4f6 | aliguori | break;
|
1631 | e3aff4f6 | aliguori | case 'c': |
1632 | e3aff4f6 | aliguori | add_user_command(optarg); |
1633 | e3aff4f6 | aliguori | break;
|
1634 | e3aff4f6 | aliguori | case 'r': |
1635 | e3aff4f6 | aliguori | readonly = 1;
|
1636 | e3aff4f6 | aliguori | break;
|
1637 | e3aff4f6 | aliguori | case 'm': |
1638 | e3aff4f6 | aliguori | misalign = 1;
|
1639 | e3aff4f6 | aliguori | break;
|
1640 | 9c4bab26 | Christoph Hellwig | case 'g': |
1641 | 9c4bab26 | Christoph Hellwig | growable = 1;
|
1642 | 9c4bab26 | Christoph Hellwig | break;
|
1643 | 5c6c3a6c | Christoph Hellwig | case 'k': |
1644 | 5c6c3a6c | Christoph Hellwig | flags |= BDRV_O_NATIVE_AIO; |
1645 | 5c6c3a6c | Christoph Hellwig | break;
|
1646 | e3aff4f6 | aliguori | case 'V': |
1647 | e3aff4f6 | aliguori | printf("%s version %s\n", progname, VERSION);
|
1648 | e3aff4f6 | aliguori | exit(0);
|
1649 | e3aff4f6 | aliguori | case 'h': |
1650 | e3aff4f6 | aliguori | usage(progname); |
1651 | e3aff4f6 | aliguori | exit(0);
|
1652 | e3aff4f6 | aliguori | default:
|
1653 | e3aff4f6 | aliguori | usage(progname); |
1654 | e3aff4f6 | aliguori | exit(1);
|
1655 | e3aff4f6 | aliguori | } |
1656 | e3aff4f6 | aliguori | } |
1657 | e3aff4f6 | aliguori | |
1658 | e3aff4f6 | aliguori | if ((argc - optind) > 1) { |
1659 | e3aff4f6 | aliguori | usage(progname); |
1660 | e3aff4f6 | aliguori | exit(1);
|
1661 | e3aff4f6 | aliguori | } |
1662 | e3aff4f6 | aliguori | |
1663 | e3aff4f6 | aliguori | bdrv_init(); |
1664 | e3aff4f6 | aliguori | |
1665 | e3aff4f6 | aliguori | /* initialize commands */
|
1666 | e3aff4f6 | aliguori | quit_init(); |
1667 | e3aff4f6 | aliguori | help_init(); |
1668 | e3aff4f6 | aliguori | add_command(&open_cmd); |
1669 | e3aff4f6 | aliguori | add_command(&close_cmd); |
1670 | e3aff4f6 | aliguori | add_command(&read_cmd); |
1671 | e3aff4f6 | aliguori | add_command(&readv_cmd); |
1672 | e3aff4f6 | aliguori | add_command(&write_cmd); |
1673 | e3aff4f6 | aliguori | add_command(&writev_cmd); |
1674 | 776cbbbd | Kevin Wolf | add_command(&multiwrite_cmd); |
1675 | 95533d5f | Christoph Hellwig | add_command(&aio_read_cmd); |
1676 | 95533d5f | Christoph Hellwig | add_command(&aio_write_cmd); |
1677 | 95533d5f | Christoph Hellwig | add_command(&aio_flush_cmd); |
1678 | e3aff4f6 | aliguori | add_command(&flush_cmd); |
1679 | e3aff4f6 | aliguori | add_command(&truncate_cmd); |
1680 | e3aff4f6 | aliguori | add_command(&length_cmd); |
1681 | e3aff4f6 | aliguori | add_command(&info_cmd); |
1682 | e3aff4f6 | aliguori | add_command(&alloc_cmd); |
1683 | e3aff4f6 | aliguori | |
1684 | e3aff4f6 | aliguori | add_args_command(init_args_command); |
1685 | e3aff4f6 | aliguori | add_check_command(init_check_command); |
1686 | e3aff4f6 | aliguori | |
1687 | e3aff4f6 | aliguori | /* open the device */
|
1688 | f5edb014 | Naphtali Sprei | if (!readonly) {
|
1689 | f5edb014 | Naphtali Sprei | flags |= BDRV_O_RDWR; |
1690 | f5edb014 | Naphtali Sprei | } |
1691 | e3aff4f6 | aliguori | |
1692 | e3aff4f6 | aliguori | if ((argc - optind) == 1) |
1693 | 9c4bab26 | Christoph Hellwig | openfile(argv[optind], flags, growable); |
1694 | e3aff4f6 | aliguori | command_loop(); |
1695 | e3aff4f6 | aliguori | |
1696 | 95533d5f | Christoph Hellwig | /*
|
1697 | 95533d5f | Christoph Hellwig | * Make sure all outstanding requests get flushed the program exits.
|
1698 | 95533d5f | Christoph Hellwig | */
|
1699 | 95533d5f | Christoph Hellwig | qemu_aio_flush(); |
1700 | 95533d5f | Christoph Hellwig | |
1701 | e3aff4f6 | aliguori | if (bs)
|
1702 | e3aff4f6 | aliguori | bdrv_close(bs); |
1703 | e3aff4f6 | aliguori | return 0; |
1704 | e3aff4f6 | aliguori | } |