NAME

       get_kernel_syms - retrieve exported kernel and module symbols

SYNOPSIS

       #include <linux/module.h>

       [[deprecated]] int get_kernel_syms(struct kernel_sym *table);

DESCRIPTION

       Note: This system call is present only before Linux 2.6.

       If  table  is  NULL,  get_kernel_syms() returns the number of symbols available for query.
       Otherwise, it fills in a table of structures:

           struct kernel_sym {
               unsigned long value;
               char          name[60];
           };

       The symbols are interspersed with magic symbols of the form #module-name with  the  kernel
       having  an  empty name.  The value associated with a symbol of this form is the address at
       which the module is loaded.

       The symbols exported from each module follow their magic module tag and  the  modules  are
       returned in the reverse of the order in which they were loaded.

RETURN VALUE

       On  success,  returns the number of symbols copied to table.  On error, -1 is returned and
       errno is set to indicate the error.

ERRORS

       There is only one possible error return:

       ENOSYS get_kernel_syms() is not supported in this version of the kernel.

VERSIONS

       This system call is present only up until Linux 2.4; it was removed in Linux 2.6.

STANDARDS

       get_kernel_syms() is Linux-specific.

NOTES

       This obsolete system call is not supported by glibc.  No declaration is provided in  glibc
       headers,  but,  through a quirk of history, glibc versions before glibc 2.23 did export an
       ABI for this system call.  Therefore,  in  order  to  employ  this  system  call,  it  was
       sufficient to manually declare the interface in your code; alternatively, you could invoke
       the system call using syscall(2).

BUGS

       There is no way to indicate the size of the buffer allocated for table.  If  symbols  have
       been  added to the kernel since the program queried for the symbol table size, memory will
       be corrupted.

       The length of exported symbol names is limited to 59 characters.

       Because of these limitations, this system call is deprecated in favor  of  query_module(2)
       (which  is itself nowadays deprecated in favor of other interfaces described on its manual
       page).

SEE ALSO

       create_module(2), delete_module(2), init_module(2), query_module(2)