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    Command:

    kldsym

    
    
    
    

    SYNOPSIS

         #include <sys/param.h>
         #include <sys/linker.h>
    
         int
         kldsym(int fileid, int command, void *data);
    
    
    

    DESCRIPTION

         The kldsym() system call returns the address of the symbol specified in
         data in the module specified by fileid.  If fileid is 0, all loaded mod-
         ules are searched.  Currently, the only command implemented is
         KLDSYM_LOOKUP.
    
         The data argument is of the following structure:
    
               struct kld_sym_lookup {
                   int         version;        /* sizeof(struct kld_sym_lookup) */
                   char        *symname;       /* Symbol name we are looking up */
                   u_long      symvalue;
                   size_t      symsize;
               };
    
         The version member is to be set by the code calling kldsym() to
         sizeof(struct kld_sym_lookup).  The next two members, version and
         symname, are specified by the user.  The last two, symvalue and symsize,
         are filled in by kldsym() and contain the address associated with symname
         and the size of the data it points to, respectively.
    
    
    

    RETURN VALUES

         The kldsym() function returns the value 0 if successful; otherwise the
         value -1 is returned and the global variable errno is set to indicate the
         error.
    
    
    

    ERRORS

         The kldsym() system call will fail if:
    
         [EINVAL]           Invalid value in data->version or command.
    
         [ENOENT]           The fileid argument is invalid, or the specified sym-
                            bol could not be found.
    
    
    

    SEE ALSO

         kldfind(2), kldfirstmod(2), kldload(2), kldnext(2), kldunload(2),
         modfind(2), modnext(2), modstat(2), kld(4)
    
    
    

    HISTORY

         The kldsym() system call first appeared in FreeBSD 3.0.
    
    
    

    BSD July 26, 2001 BSD

    
    
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