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gelf_getsym (3)
  • >> gelf_getsym (3) ( FreeBSD man: Библиотечные вызовы )

  • BSD mandoc
     

    NAME

    gelf_getsym
    
     
    gelf_update_sym
    
     - read and update symbol information
    
     
    

    LIBRARY

    Lb libelf
    
     
    

    SYNOPSIS

       #include <gelf.h>
    GElf_Sym * gelf_getsym (Elf_Data *data int ndx GElf_Sym *sym);
    int gelf_update_sym (Elf_Data *data int ndx GElf_Sym *sym);
     

    DESCRIPTION

    These convenience functions are used to retrieve and update class-dependent Vt Elf32_Sym and Vt Elf64_Sym structures in an ELF object.

    Argument data is an Vt Elf_Data descriptor associated with a section of type SHT_SYMTAB SHT_DYNSYM or SHT_GNU_versym Argument ndx is the index of the symbol being retrieved or updated. The class-independent Vt GElf_Sym structure is described in gelf(3).

    Function gelf_getsym ();
    retrieves class-dependent symbol information at index ndx in data buffer data and copies it to the destination pointed to by argument sym after translation to class-independent form.

    Function gelf_update_sym ();
    converts the class-independent symbol information pointed to by argument sym to class-dependent form, and writes it to the symbol entry at index ndx in the data buffer described by argument data Function gelf_update_sym ();
    signals an error if any of the values in the class-independent representation exceeds the representable limits of the target type.  

    RETURN VALUES

    Function gelf_getsym ();
    returns the value of argument sym if successful, or NULL in case of an error. Function gelf_update_sym ();
    returns a non-zero value if successful, or zero in case of an error.  

    ERRORS

    These functions may fail with the following errors:

    Bq Er ELF_E_ARGUMENT
    Arguments data or sym were NULL.
    Bq Er ELF_E_ARGUMENT
    Argument ndx was less than zero or larger than the number of symbols in the data descriptor.
    Bq Er ELF_E_ARGUMENT
    Data descriptor data was not associated with a section containing symbol information.
    Bq Er ELF_E_RANGE
    A value was not representable in the target type.

     

    SEE ALSO

    elf(3), elf_getdata3, elf_getscn3, gelf(3), gelf_getsyminfo3, gelf_update_syminfo3


     

    Index

    NAME
    LIBRARY
    SYNOPSIS
    DESCRIPTION
    RETURN VALUES
    ERRORS
    SEE ALSO


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