read.cgi からの流用部分１

char *BigBuffer = NULL;
int lineMax = -1;
int zz_fileSize = 0;

int dat_read(char const *fname)
{
int in;

zz_fileSize = getFileSize(fname);

if (zz_fileSize > MAX_FILESIZE)
html_error(ERROR_TOO_HUGE);
if (zz_fileSize < 10)
html_error(ERROR_NOT_FOUND); /* エラー種別は別にした方がいいかも */

in = open(fname, O_RDONLY);
if (in < 0)
{
html_error(ERROR_NOT_FOUND);
return 0;
}
BigBuffer = malloc(zz_fileSize + 32);
if (!BigBuffer)
html_error(ERROR_NO_MEMORY);

read(in, BigBuffer, zz_fileSize);
close(in);
lineMax = getLineMax();
check_logtype();
get_title();
return 0;
}