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#include "stdio_impl.h"
#include <fcntl.h>
#include <string.h>
FILE *__fopen_rb_ca(const char *filename, FILE *f, unsigned char *buf, size_t len)
{
memset(f, 0, sizeof *f);
f->fd = sys_open(filename, O_RDONLY|O_CLOEXEC);
if (f->fd < 0) return 0;
f->flags = F_NOWR | F_PERM;
f->buf = buf + UNGET;
f->buf_size = len - UNGET;
f->read = __stdio_read;
f->seek = __stdio_seek;
f->close = __stdio_close;
f->lock = -1;
return f;
}
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