-
Notifications
You must be signed in to change notification settings - Fork 0
/
options.c
315 lines (297 loc) · 7.46 KB
/
options.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
/*
* Copyright 2012+ Michal Soltys <soltys@ziu.info>
*
* This file is part of Yancat.
*
* Yancat is free software: you can redistribute it and/or modify it under the
* terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later
* version.
*
* Yancat is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* Yancat. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <strings.h>
#include <getopt.h>
#include <errno.h>
#ifdef h_affi
# include <sched.h>
#endif
#include "version.h"
#include "common.h"
#include "options.h"
#include "parse.h"
#define DEF_MAXCNT 1048576u
#define DEF_MAXBLK 4194304u
#define DEF_MAXHPAGE (256u*1048576u)
static void unset_in(struct options_s *opts)
{
opts->fd[0] = NULL;
opts->file[0] = NULL;
opts->sock[0].dom = 0;
}
static void unset_out(struct options_s *opts)
{
opts->fd[1] = NULL;
opts->file[1] = NULL;
opts->sock[1].dom = 0;
}
static void set_default(struct options_s *opts)
{
memset(opts, 0, sizeof *opts);
opts->bsiz = 4194304;
opts->rblk = 65536;
opts->wblk = 65536;
opts->rcnt = 1;
opts->wcnt = 1;
opts->cpuR = -1;
opts->cpuW = -1;
#ifdef h_mingw
opts->mode = sp;
#else
opts->mode = mp;
#endif
}
static void help(void)
{
fprintf(stderr,
"\n"
"Yancat\n"
YANVER "\n"
"(c) 2012+ Michal Soltys\n"
"\n"
" -i <spec> input fd specification\n"
" -o <spec> output fd specification\n"
" -b <size> reader's blocking unit\n"
" -B <size> writer's blocking unit\n"
" -m <size> buffer size\n"
" -n <size> try to read at least <n> blocks (n/a if MP)\n"
" -N <size> try to write at least <n> blocks (n/a if MP)\n"
" -H <size> request huge pages of size <n> (linux only)\n"
" -p <float> resume point after overrun (reader)\n"
" -P <float> resume point after underrun (writer)\n"
#ifdef h_affi
" -u <cpu> try to run reader only on <cpu>\n"
" -U <cpu> try to run writer only on <cpu>\n"
#endif
#ifdef h_thr
" -t use posix threads instead of processes\n"
#endif
#ifndef h_mingw
" -1 use single process\n"
#endif
" -y fsync output after the transfer\n"
" -r strict blocking writes\n"
" -l reader in byte/line mode\n"
" -L writer in byte/line mode\n"
" -g enable builtin looping until error/interruption\n"
" -c calculate crc & cksum (reader)\n"
" -C calculate crc & cksum (writer)\n"
" -h help + known socket options\n"
"\n"
"- <spec> is ([fdtu]:|:|)<string> (case insensitive), eg:\n"
" t:host.tld:12345:SO_SNDBUF=67890,TCP_NODELAY,IPTOS=1|2|IPTOS_LOWDELAY\n"
" u:host.tld:12345:SO_SNDBUF=1472\n"
" d:123\n"
" -\n"
" f:/stuff/backup.tar\n"
" 'd' and 'f:' can usually be omitted; '-' substitutes for d:0 or d:1\n"
"- <size> is an integer, which can be suffixed with [bBkKmMgG]\n"
"- <cpu> is a required cpu number, starting with 0\n"
"- <float> in -[pP] is a value >0.0 <1.0, constrained by the block sizes\n"
"- if no input and/or output is provided, sdtin/stdout are used\n\n"
"- see README for additional info\n"
"\n"
);
sp_list_known();
}
static int
opt_subparse(struct options_s *opts, const char *spec, int dir)
{
int ret = -1;
size_t len, len2;
static const char* dash[] = { "0", "1" };
if (!spec)
return -1;
len = strlen(spec);
len2 = len > 2 ? 2 : len;
if (!strncasecmp(spec, "t:", len2)) {
ret = sp_addr_parse(&opts->sock[dir], spec + 2, SPEC_IS_TCP);
} else if (!strncasecmp(spec, "u:", len2)) {
ret = sp_addr_parse(&opts->sock[dir], spec + 2, SPEC_IS_UDP);
} else if (*spec == ':' || !strncasecmp(spec, "d:", len2)) {
spec++;
if (*spec == ':')
spec++;
opts->fd[dir] = spec;
ret = 0;
} else if (!strcasecmp(spec, "-")) {
opts->fd[dir] = dash[dir];
ret = 0;
} else {
if (!strncasecmp(spec, "f:", len2))
spec += 2;
opts->file[dir] = spec;
ret = 0;
}
return ret;
}
int opt_parse(struct options_s *opts, int argc, char **argv)
{
static const char err_inv[] = "Invalid -%c value.\n";
double rs = 0, ws = 0;
int opt;
set_default(opts);
opterr = 0;
while ((opt = getopt(argc, argv, "i:o:b:B:m:n:N:H:r1ytlLcCghp:P:u:U:")) != -1) {
switch (opt) {
case 'n':
opts->rcnt = (size_t)get_ul(optarg);
if (errno || opts->rcnt < 1 || opts->rcnt > DEF_MAXCNT) {
fprintf(stderr, err_inv, opt);
goto out;
}
break;
case 'N':
opts->wcnt = (size_t)get_ul(optarg);
if (errno || opts->wcnt < 1 || opts->wcnt > DEF_MAXCNT) {
fprintf(stderr, err_inv, opt);
goto out;
}
break;
case 'i':
unset_in(opts);
if ((opt_subparse(opts, optarg, 0)) < 0) {
fprintf (stderr, "Bad input file descriptor specification.\n");
goto out;
}
break;
case 'o':
unset_out(opts);
if ((opt_subparse(opts, optarg, 1)) < 0) {
fprintf (stderr, "Bad output file descriptor specification.\n");
goto out;
}
break;
case 'b':
opts->rblk = (size_t)get_ul(optarg);
if (errno || opts->rblk < 1 || opts->rblk > DEF_MAXBLK) {
fprintf(stderr, err_inv, opt);
goto out;
}
break;
case 'B':
opts->wblk = (size_t)get_ul(optarg);
if (errno || opts->wblk < 1 || opts->wblk > DEF_MAXBLK) {
fprintf(stderr, err_inv, opt);
goto out;
}
break;
case 'm':
opts->bsiz = (size_t)get_ul(optarg);
if (errno || opts->bsiz < get_page() || opts->bsiz > SIZE_MAX/2u) {
fprintf(stderr, err_inv, opt);
goto out;
}
break;
case 'H':
opts->hpage = (size_t)get_ul(optarg);
if (errno || opts->hpage < get_page() || opts->hpage > DEF_MAXHPAGE) {
fprintf(stderr, err_inv, opt);
goto out;
}
break;
case 'p':
rs = get_double(optarg);
if (errno || rs <= 0.0 || rs >= 1.0) {
fprintf(stderr, err_inv, opt);
goto out;
}
opts->rsp = rs;
break;
case 'P':
ws = get_double(optarg);
if (errno || ws <= 0.0 || ws >= 1.0) {
fprintf(stderr, err_inv, opt);
goto out;
}
opts->wsp = ws;
break;
#ifdef h_affi
case 'u':
opts->cpuR = (int)get_ul(optarg);
if (errno || opts->cpuR >= CPU_SETSIZE) {
fprintf(stderr, err_inv, opt);
goto out;
}
break;
case 'U':
opts->cpuW = (int)get_ul(optarg);
if (errno || opts->cpuW >= CPU_SETSIZE) {
fprintf(stderr, err_inv, opt);
goto out;
}
break;
#endif
case 'g':
opts->loop = 1;
break;
#ifdef h_thr
case 't':
opts->mode = mt;
break;
#endif
#ifndef h_mingw
case '1':
opts->mode = sp;
break;
#endif
case 'y':
opts->fsync = 1;
break;
case 'r':
opts->strict = 1;
break;
case 'l':
opts->rline = 1;
break;
case 'L':
opts->wline = 1;
break;
case 'c':
opts->rcrc = 1;
break;
case 'C':
opts->wcrc = 1;
break;
case 'h':
help();
goto out;
default:
fprintf(stderr, "\nunknown option: -%c\n", opt);
goto out;
}
}
if (opts->wline && opts->strict) {
fputs("Strict mode makes no sense with writer in line mode.\n", stderr);
goto out;
}
#if 0
if (opts->rblk < opts->wblk && opts->rline && !opts->wline) {
fputs("\nrblk must be greater or equal to wblk, if the left side is in the \"line\" mode,\n and the right side is in the reblocking mode.\n", stderr);
goto out;
}
#endif
return 0;
out:
return -1;
}