1#include "stdio_impl.h"
2#include <fcntl.h>
3#include <string.h>
4
5FILE *__fopen_rb_ca(const char *filename, FILE *f, unsigned char *buf, size_t len)
6{
7	memset(f, 0, sizeof *f);
8
9	f->fd = sys_open(filename, O_RDONLY|O_CLOEXEC);
10	if (f->fd < 0) return 0;
11	__syscall(SYS_fcntl, f->fd, F_SETFD, FD_CLOEXEC);
12
13	f->flags = F_NOWR | F_PERM;
14	f->buf = buf + UNGET;
15	f->buf_size = len - UNGET;
16	f->read = __stdio_read;
17	f->seek = __stdio_seek;
18	f->close = __stdio_close;
19	f->lock = -1;
20
21	return f;
22}
23