A question about BLCR source code

From: (lihongliang070_at_tom.com)
Date: Wed May 06 2009 - 00:58:42 PDT

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    hello,professor:
    
    I am reading BLCR source code these days, when I come to the source code in LIBCR, I can not understand how the user get the C/R services from the CR kernel module by invoking functions in LIBCR,since the system call declared in Cr_syscall.h were not implemented at all.. I am confused... so I need your help
    
    syscall in Cr_syscall.h:
    
    extern int __cri_ioctl(int fd, int cmd, void * arg, int * errno_p);
    extern int __cri_open(const char * pathname, int flags, int mode, int * errno_p);
    extern int __cri_close(int fd, int * errno_p);
    extern int __cri_sched_yield(int * errno_p);
    extern int __cri_nanosleep(const struct timespec * req, struct timespec * rem, int * errno_p);
    extern int __cri_exit(int code, int * errno_p);
    extern int __cri_exit_group(int code, int * errno_p);
    extern int __cri_ksigaction(int signum, const struct k_sigaction *act,
    			    struct k_sigaction *oldact, size_t setsize, int * errno_p);
    
    
    I can not find the implementaions... They are just declared....
     
    
    

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