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/*
* Copyright (c) 2015 DeNA Co., Ltd., Kazuho Oku
*
* 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 <errno.h>
#include <fcntl.h>
#include <stdint.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/uio.h>
#include <unistd.h>
#include "h2o/file.h"
h2o_iovec_t h2o_file_read(const char *fn)
{
int fd;
struct stat st;
h2o_iovec_t ret = {NULL};
/* open */
if ((fd = open(fn, O_RDONLY | O_CLOEXEC)) == -1)
goto Error;
if (fstat(fd, &st))
goto Error;
/* allocate memory */
if (st.st_size > SIZE_MAX) {
errno = ENOMEM;
goto Error;
}
if ((ret.base = malloc((size_t)st.st_size)) == NULL)
goto Error;
/* read */
while (ret.len != (size_t)st.st_size) {
ssize_t r;
while ((r = read(fd, ret.base + ret.len, (size_t)st.st_size - ret.len)) == -1 && errno == EINTR)
;
if (r <= 0)
goto Error;
ret.len += r;
}
/* close */
close(fd);
return ret;
Error:
if (fd != -1)
close(fd);
free(ret.base);
return (h2o_iovec_t){NULL};
}
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