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authorFathi Boudra <fathi.boudra@linaro.org>2013-03-30 21:18:24 +0200
committerFathi Boudra <fathi.boudra@linaro.org>2013-03-30 21:18:24 +0200
commit050a840ead5e51a1a9f3bffe89cc89077b2f35ed (patch)
tree36d8e48e23b64a07a914b3b34d568c747915b560 /cutils.c
parent17d4e9b1e2d6d32da51278a4165621af99bade02 (diff)
Imported Upstream version 1.4.0-2013.03upstream/1.4.0-2013.03
Diffstat (limited to 'cutils.c')
-rw-r--r--cutils.c323
1 files changed, 0 insertions, 323 deletions
diff --git a/cutils.c b/cutils.c
deleted file mode 100644
index 4f0692f..0000000
--- a/cutils.c
+++ /dev/null
@@ -1,323 +0,0 @@
-/*
- * Simple C functions to supplement the C library
- *
- * Copyright (c) 2006 Fabrice Bellard
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-#include "qemu-common.h"
-#include "host-utils.h"
-#include <math.h>
-
-#include "qemu_socket.h"
-#include "iov.h"
-
-void strpadcpy(char *buf, int buf_size, const char *str, char pad)
-{
- int len = qemu_strnlen(str, buf_size);
- memcpy(buf, str, len);
- memset(buf + len, pad, buf_size - len);
-}
-
-void pstrcpy(char *buf, int buf_size, const char *str)
-{
- int c;
- char *q = buf;
-
- if (buf_size <= 0)
- return;
-
- for(;;) {
- c = *str++;
- if (c == 0 || q >= buf + buf_size - 1)
- break;
- *q++ = c;
- }
- *q = '\0';
-}
-
-/* strcat and truncate. */
-char *pstrcat(char *buf, int buf_size, const char *s)
-{
- int len;
- len = strlen(buf);
- if (len < buf_size)
- pstrcpy(buf + len, buf_size - len, s);
- return buf;
-}
-
-int strstart(const char *str, const char *val, const char **ptr)
-{
- const char *p, *q;
- p = str;
- q = val;
- while (*q != '\0') {
- if (*p != *q)
- return 0;
- p++;
- q++;
- }
- if (ptr)
- *ptr = p;
- return 1;
-}
-
-int stristart(const char *str, const char *val, const char **ptr)
-{
- const char *p, *q;
- p = str;
- q = val;
- while (*q != '\0') {
- if (qemu_toupper(*p) != qemu_toupper(*q))
- return 0;
- p++;
- q++;
- }
- if (ptr)
- *ptr = p;
- return 1;
-}
-
-/* XXX: use host strnlen if available ? */
-int qemu_strnlen(const char *s, int max_len)
-{
- int i;
-
- for(i = 0; i < max_len; i++) {
- if (s[i] == '\0') {
- break;
- }
- }
- return i;
-}
-
-time_t mktimegm(struct tm *tm)
-{
- time_t t;
- int y = tm->tm_year + 1900, m = tm->tm_mon + 1, d = tm->tm_mday;
- if (m < 3) {
- m += 12;
- y--;
- }
- t = 86400ULL * (d + (153 * m - 457) / 5 + 365 * y + y / 4 - y / 100 +
- y / 400 - 719469);
- t += 3600 * tm->tm_hour + 60 * tm->tm_min + tm->tm_sec;
- return t;
-}
-
-int qemu_fls(int i)
-{
- return 32 - clz32(i);
-}
-
-/*
- * Make sure data goes on disk, but if possible do not bother to
- * write out the inode just for timestamp updates.
- *
- * Unfortunately even in 2009 many operating systems do not support
- * fdatasync and have to fall back to fsync.
- */
-int qemu_fdatasync(int fd)
-{
-#ifdef CONFIG_FDATASYNC
- return fdatasync(fd);
-#else
- return fsync(fd);
-#endif
-}
-
-/*
- * Checks if a buffer is all zeroes
- *
- * Attention! The len must be a multiple of 4 * sizeof(long) due to
- * restriction of optimizations in this function.
- */
-bool buffer_is_zero(const void *buf, size_t len)
-{
- /*
- * Use long as the biggest available internal data type that fits into the
- * CPU register and unroll the loop to smooth out the effect of memory
- * latency.
- */
-
- size_t i;
- long d0, d1, d2, d3;
- const long * const data = buf;
-
- assert(len % (4 * sizeof(long)) == 0);
- len /= sizeof(long);
-
- for (i = 0; i < len; i += 4) {
- d0 = data[i + 0];
- d1 = data[i + 1];
- d2 = data[i + 2];
- d3 = data[i + 3];
-
- if (d0 || d1 || d2 || d3) {
- return false;
- }
- }
-
- return true;
-}
-
-#ifndef _WIN32
-/* Sets a specific flag */
-int fcntl_setfl(int fd, int flag)
-{
- int flags;
-
- flags = fcntl(fd, F_GETFL);
- if (flags == -1)
- return -errno;
-
- if (fcntl(fd, F_SETFL, flags | flag) == -1)
- return -errno;
-
- return 0;
-}
-#endif
-
-static int64_t suffix_mul(char suffix, int64_t unit)
-{
- switch (qemu_toupper(suffix)) {
- case STRTOSZ_DEFSUFFIX_B:
- return 1;
- case STRTOSZ_DEFSUFFIX_KB:
- return unit;
- case STRTOSZ_DEFSUFFIX_MB:
- return unit * unit;
- case STRTOSZ_DEFSUFFIX_GB:
- return unit * unit * unit;
- case STRTOSZ_DEFSUFFIX_TB:
- return unit * unit * unit * unit;
- }
- return -1;
-}
-
-/*
- * Convert string to bytes, allowing either B/b for bytes, K/k for KB,
- * M/m for MB, G/g for GB or T/t for TB. End pointer will be returned
- * in *end, if not NULL. Return -1 on error.
- */
-int64_t strtosz_suffix_unit(const char *nptr, char **end,
- const char default_suffix, int64_t unit)
-{
- int64_t retval = -1;
- char *endptr;
- unsigned char c;
- int mul_required = 0;
- double val, mul, integral, fraction;
-
- errno = 0;
- val = strtod(nptr, &endptr);
- if (isnan(val) || endptr == nptr || errno != 0) {
- goto fail;
- }
- fraction = modf(val, &integral);
- if (fraction != 0) {
- mul_required = 1;
- }
- c = *endptr;
- mul = suffix_mul(c, unit);
- if (mul >= 0) {
- endptr++;
- } else {
- mul = suffix_mul(default_suffix, unit);
- assert(mul >= 0);
- }
- if (mul == 1 && mul_required) {
- goto fail;
- }
- if ((val * mul >= INT64_MAX) || val < 0) {
- goto fail;
- }
- retval = val * mul;
-
-fail:
- if (end) {
- *end = endptr;
- }
-
- return retval;
-}
-
-int64_t strtosz_suffix(const char *nptr, char **end, const char default_suffix)
-{
- return strtosz_suffix_unit(nptr, end, default_suffix, 1024);
-}
-
-int64_t strtosz(const char *nptr, char **end)
-{
- return strtosz_suffix(nptr, end, STRTOSZ_DEFSUFFIX_MB);
-}
-
-int qemu_parse_fd(const char *param)
-{
- int fd;
- char *endptr = NULL;
-
- fd = strtol(param, &endptr, 10);
- if (*endptr || (fd == 0 && param == endptr)) {
- return -1;
- }
- return fd;
-}
-
-/* round down to the nearest power of 2*/
-int64_t pow2floor(int64_t value)
-{
- if (!is_power_of_2(value)) {
- value = 0x8000000000000000ULL >> clz64(value);
- }
- return value;
-}
-
-/*
- * Implementation of ULEB128 (http://en.wikipedia.org/wiki/LEB128)
- * Input is limited to 14-bit numbers
- */
-int uleb128_encode_small(uint8_t *out, uint32_t n)
-{
- g_assert(n <= 0x3fff);
- if (n < 0x80) {
- *out++ = n;
- return 1;
- } else {
- *out++ = (n & 0x7f) | 0x80;
- *out++ = n >> 7;
- return 2;
- }
-}
-
-int uleb128_decode_small(const uint8_t *in, uint32_t *n)
-{
- if (!(*in & 0x80)) {
- *n = *in++;
- return 1;
- } else {
- *n = *in++ & 0x7f;
- /* we exceed 14 bit number */
- if (*in & 0x80) {
- return -1;
- }
- *n |= *in++ << 7;
- return 2;
- }
-}