comparison: src/server/util/io.c
src/server/util/io.c
- changeset 32
- ebba53de8b18
- parent 25
- 5dee29c7c530
- child 41
- bb7a1f5a8b48
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| 31:280250e45ba6 | 32:ebba53de8b18 |
|---|---|
| 28 | 28 |
| 29 #include <unistd.h> | 29 #include <unistd.h> |
| 30 #include <stdlib.h> | 30 #include <stdlib.h> |
| 31 #include <sys/uio.h> | 31 #include <sys/uio.h> |
| 32 | 32 |
| 33 #include <limits.h> /* asprintf */ | |
| 34 | |
| 33 #include "io.h" | 35 #include "io.h" |
| 34 #include "pool.h" | 36 #include "pool.h" |
| 35 | 37 |
| 36 IOStream native_io_funcs = { | 38 IOStream native_io_funcs = { |
| 37 system_write, | 39 system_write, |
| 137 } | 139 } |
| 138 | 140 |
| 139 ssize_t iovec_buf_flush(iovec_buf_t *io, int fd) { | 141 ssize_t iovec_buf_flush(iovec_buf_t *io, int fd) { |
| 140 return writev(fd, io->iov, io->iovctn); | 142 return writev(fd, io->iov, io->iovctn); |
| 141 } | 143 } |
| 144 | |
| 145 | |
| 146 /* TODO: add asprintf to new file */ | |
| 147 | |
| 148 /* | |
| 149 * asprintf implementation for Solaris 10 | |
| 150 * source from OpenSolaris | |
| 151 * file: /onnv/onnv-gate/usr/src/lib/libc/port/print/asprintf.c | |
| 152 */ | |
| 153 | |
| 154 /* | |
| 155 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. | |
| 156 * Use is subject to license terms. | |
| 157 */ | |
| 158 | |
| 159 /* | |
| 160 * Copyright (c) 2004 Darren Tucker. | |
| 161 * | |
| 162 * Based originally on asprintf.c from OpenBSD: | |
| 163 * Copyright (c) 1997 Todd C. Miller <Todd.Miller@courtesan.com> | |
| 164 * | |
| 165 * Permission to use, copy, modify, and distribute this software for any | |
| 166 * purpose with or without fee is hereby granted, provided that the above | |
| 167 * copyright notice and this permission notice appear in all copies. | |
| 168 * | |
| 169 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
| 170 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
| 171 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
| 172 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
| 173 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
| 174 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
| 175 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
| 176 */ | |
| 177 | |
| 178 #ifdef __SunOS_5_10 | |
| 179 | |
| 180 #define INIT_SZ 128 | |
| 181 | |
| 182 /* VARARGS2 */ | |
| 183 int | |
| 184 vasprintf(char **str, const char *format, va_list ap) | |
| 185 { | |
| 186 char string[INIT_SZ]; | |
| 187 char *newstr; | |
| 188 int ret; | |
| 189 size_t len; | |
| 190 | |
| 191 *str = NULL; | |
| 192 ret = vsnprintf(string, INIT_SZ, format, ap); | |
| 193 if (ret < 0) /* retain the value of errno from vsnprintf() */ | |
| 194 return (-1); | |
| 195 if (ret < INIT_SZ) { | |
| 196 len = ret + 1; | |
| 197 if ((newstr = malloc(len)) == NULL) | |
| 198 return (-1); /* retain errno from malloc() */ | |
| 199 (void) strlcpy(newstr, string, len); | |
| 200 *str = newstr; | |
| 201 return (ret); | |
| 202 } | |
| 203 /* | |
| 204 * We will perform this loop more than once only if some other | |
| 205 * thread modifies one of the vasprintf() arguments after our | |
| 206 * previous call to vsnprintf(). | |
| 207 */ | |
| 208 for (;;) { | |
| 209 if (ret == INT_MAX) { /* Bad length */ | |
| 210 errno = ENOMEM; | |
| 211 return (-1); | |
| 212 } | |
| 213 len = ret + 1; | |
| 214 if ((newstr = malloc(len)) == NULL) | |
| 215 return (-1); /* retain errno from malloc() */ | |
| 216 ret = vsnprintf(newstr, len, format, ap); | |
| 217 if (ret < 0) { /* retain errno from vsnprintf() */ | |
| 218 free(newstr); | |
| 219 return (-1); | |
| 220 } | |
| 221 if (ret < len) { | |
| 222 *str = newstr; | |
| 223 return (ret); | |
| 224 } | |
| 225 free(newstr); | |
| 226 } | |
| 227 } | |
| 228 | |
| 229 int | |
| 230 asprintf(char **str, const char *format, ...) | |
| 231 { | |
| 232 va_list ap; | |
| 233 int ret; | |
| 234 | |
| 235 *str = NULL; | |
| 236 va_start(ap, format); | |
| 237 ret = vasprintf(str, format, ap); | |
| 238 va_end(ap); | |
| 239 | |
| 240 return (ret); | |
| 241 } | |
| 242 | |
| 243 #endif |
