1 #include "stdio_impl.h"
2 #include <fcntl.h>
3 #include <string.h>
4
__fopen_rb_ca(const char * filename,FILE * f,unsigned char * buf,size_t len)5 FILE *__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