gelf_checksum(3) [freebsd man page]

GELF_CHECKSUM(3)					   BSD Library Functions Manual 					  GELF_CHECKSUM(3)

NAME

     elf32_checksum, elf64_checksum, gelf_checksum -- return the checksum of an ELF object

LIBRARY

     ELF Access Library (libelf, -lelf)

SYNOPSIS

     #include <libelf.h>

     long
     elf32_checksum(Elf *elf);

     long
     elf64_checksum(Elf *elf);

     #include <gelf.h>

     long
     gelf_checksum(Elf *elf);

DESCRIPTION

     These functions return a simple checksum of the ELF object described by their argument elf.  The checksum is computed in way that allows its
     value to remain unchanged in presence of modifications to the ELF object by utilities like strip(1).

     Function elf32_checksum() returns a checksum for an ELF descriptor elf of class ELFCLASS32.

     Function elf64_checksum() returns a checksum for an ELF descriptor elf of class ELFCLASS64.

     Function gelf_checksum() provides a class-independent way retrieving the checksum for ELF object elf.

RETURN VALUES

     These functions return the checksum of the ELF object, or zero in case an error was encountered.

ERRORS

     These functions may fail with the following errors:

     [ELF_E_ARGUMENT]  Argument elf was NULL.

     [ELF_E_ARGUMENT]  Argument elf was not a descriptor for an ELF file.

     [ELF_E_ARGUMENT]  The ELF descriptor elf was not opened for reading or updating.

     [ELF_E_CLASS]     For functions elf32_checksum() and elf64_checksum(), ELF descriptor elf did not match the class of the called function.

     [ELF_E_HEADER]    The ELF object specified by argument elf had a malformed executable header.

     [ELF_E_RESOURCE]  An out of memory condition was detected during processing.

     [ELF_E_SECTION]   The ELF object specified by argument elf contained a section with a malformed section header.

     [ELF_E_VERSION]   The ELF object was of an unsupported version.

SEE ALSO

     strip(1), elf(3), gelf(3)

BSD
								  August 29, 2006							       BSD

GELF_GETEHDR(3) 					   BSD Library Functions Manual 					   GELF_GETEHDR(3)

NAME

     elf32_getehdr, elf64_getehdr, gelf_getehdr -- retrieve the object file header

LIBRARY

     ELF Access Library (libelf, -lelf)

SYNOPSIS

     #include <libelf.h>

     Elf32_Ehdr *
     elf32_getehdr(Elf *elf);

     Elf64_Ehdr *
     elf64_getehdr(Elf *elf);

     #include <gelf.h>

     GElf_Ehdr *
     gelf_getehdr(Elf *elf, GElf_Ehdr *dst);

DESCRIPTION

     These functions retrieve the ELF object file header from the ELF descriptor elf and return a translated header descriptor to their callers.

     Functions elf32_getehdr() and elf64_getehdr() return a pointer to the appropriate class-specific header descriptor if it exists in the file
     referenced by descriptor elf.  These functions return NULL if an ELF header was not found in file elf.

     Function gelf_getehdr() stores a translated copy of the header for ELF file elf into the descriptor pointed to by argument dst.  It returns
     argument dst if successful or NULL in case of failure.

RETURN VALUES

     These functions return a pointer to a translated header descriptor if successful, or NULL on failure.

ERRORS

     These functions can fail with the following errors:

     [ELF_E_ARGUMENT]  The argument elf was null.

     [ELF_E_ARGUMENT]  Argument elf was not a descriptor for an ELF file.

     [ELF_E_ARGUMENT]  The elf class of descriptor elf was not recognized.

     [ELF_E_ARGUMENT]  Argument dst was null.

     [ELF_E_CLASS]     The ELF class of descriptor elf did not match that of the API function being called.

     [ELF_E_HEADER]    ELF descriptor elf does not have an associated header.

     [ELF_E_RESOURCE]  An out of memory condition was detected during execution.

     [ELF_E_SECTION]   The ELF descriptor in argument elf did not adhere to the conventions used for extended numbering.

     [ELF_E_VERSION]   The ELF descriptor elf had an unsupported ELF version number.

SEE ALSO

     elf(3), elf32_newehdr(3), elf64_newehdr(3), elf_flagehdr(3), elf_getident(3), gelf(3), gelf_newehdr(3), elf(5)

BSD
								 December 16, 2006							       BSD