2 * Simple C functions to supplement the C library
4 * Copyright (c) 2006 Fabrice Bellard
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
24 #include "qemu-common.h"
25 #include "host-utils.h"
27 void pstrcpy(char *buf, int buf_size, const char *str)
37 if (c == 0 || q >= buf + buf_size - 1)
44 /* strcat and truncate. */
45 char *pstrcat(char *buf, int buf_size, const char *s)
50 pstrcpy(buf + len, buf_size - len, s);
54 int strstart(const char *str, const char *val, const char **ptr)
70 int stristart(const char *str, const char *val, const char **ptr)
76 if (qemu_toupper(*p) != qemu_toupper(*q))
86 time_t mktimegm(struct tm *tm)
89 int y = tm->tm_year + 1900, m = tm->tm_mon + 1, d = tm->tm_mday;
94 t = 86400 * (d + (153 * m - 457) / 5 + 365 * y + y / 4 - y / 100 +
96 t += 3600 * tm->tm_hour + 60 * tm->tm_min + tm->tm_sec;
102 return 32 - clz32(i);
107 void qemu_iovec_init(QEMUIOVector *qiov, int alloc_hint)
109 qiov->iov = qemu_malloc(alloc_hint * sizeof(struct iovec));
111 qiov->nalloc = alloc_hint;
115 void qemu_iovec_init_external(QEMUIOVector *qiov, struct iovec *iov, int niov)
123 for (i = 0; i < niov; i++)
124 qiov->size += iov[i].iov_len;
127 void qemu_iovec_add(QEMUIOVector *qiov, void *base, size_t len)
129 assert(qiov->nalloc != -1);
131 if (qiov->niov == qiov->nalloc) {
132 qiov->nalloc = 2 * qiov->nalloc + 1;
133 qiov->iov = qemu_realloc(qiov->iov, qiov->nalloc * sizeof(struct iovec));
135 qiov->iov[qiov->niov].iov_base = base;
136 qiov->iov[qiov->niov].iov_len = len;
141 void qemu_iovec_destroy(QEMUIOVector *qiov)
143 assert(qiov->nalloc != -1);
145 qemu_free(qiov->iov);
148 void qemu_iovec_reset(QEMUIOVector *qiov)
150 assert(qiov->nalloc != -1);
156 void qemu_iovec_to_buffer(QEMUIOVector *qiov, void *buf)
158 uint8_t *p = (uint8_t *)buf;
161 for (i = 0; i < qiov->niov; ++i) {
162 memcpy(p, qiov->iov[i].iov_base, qiov->iov[i].iov_len);
163 p += qiov->iov[i].iov_len;
167 void qemu_iovec_from_buffer(QEMUIOVector *qiov, const void *buf, size_t count)
169 const uint8_t *p = (const uint8_t *)buf;
173 for (i = 0; i < qiov->niov && count; ++i) {
175 if (copy > qiov->iov[i].iov_len)
176 copy = qiov->iov[i].iov_len;
177 memcpy(qiov->iov[i].iov_base, p, copy);