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#ifndef __LITEOS__ 13 fdsan_exchange_owner_tag(f->fd, 0, __get_file_tag(f)); 14#endif 15 f->flags = F_NOWR | F_PERM; 16 f->buf = buf + UNGET; 17 f->buf_size = len - UNGET; 18 f->read = __stdio_read; 19 f->seek = __stdio_seek; 20 f->close = __stdio_close; 21 f->lock = -1; 22 23 return f; 24} 25