|d_buf||Set to a valid pointer value denoting the beginning of the data area to be translated.|
|d_size||Set to the total size in bytes of the source data area to be translated.|
Set to the type of the source data being translated.
This value is one of the values defined in the
.Vt Elf_Type enumeration. The
.Vt Elf_Type enumeration is described in elf(3).
|d_version||Set to the version number of the ELF data structures being translated. Currently only version EV_CURRENT is supported.|
describes the destination buffer.
The following elements of the
.Vt Elf_Data descriptor need to be set before invoking these functions:
|d_buf||Set to a valid pointer value that denotes the start of the destination buffer that will hold translated data. This value may be the same as that of the source buffer, in which case an in-place conversion will be attempted.|
|d_size||Set to the size of the destination buffer in bytes. This value will be modified if the function call succeeds.|
|d_version||Set to the desired version number of the destination. Currently only version EV_CURRENT is supported.|
These translations routines allow the source and destination buffers to coincide, in which case an in-place translation will be done if the destination is large enough to hold the translated data. Other kinds of overlap between the source and destination buffers are not permitted.
On successful completion of the translation request the following fields of the dst descriptor would be modified:
|d_size||Set to the size in bytes of the translated data.|
|d_type||Set to the d_type value of the source data descriptor.|
Argument encode specifies the encoding in which the file objects are represented. It must be one of:
|ELFDATANONE||File objects use the librarys native byte ordering.|
|ELFDATA2LSB||File objects use a little-endian ordering.|
|ELFDATA2MSB||File objects use a big-endian ordering.|
The functions gelf_xlatetof and gelf_xlatetom select the appropriate 32 or 64 bit translations based on the class of argument elf.
These functions return argument dst if successful, or NULL in case of an error.
These functions may fail with the following errors:
[ELF_E_ARGUMENT] One of arguments src, dst or elf was NULL. [ELF_E_ARGUMENT] Arguments src and dst were equal. [ELF_E_ARGUMENT] The desired encoding parameter was not one of ELFDATANONE, ELFDATA2LSB or ELFDATA2MSB. [ELF_E_ARGUMENT] The d_type field of argument src specified an unsupported type. [ELF_E_DATA] The src argument specified a buffer size that was not an integral multiple of its underlying type. [ELF_E_DATA] The dst argument specified a buffer size that was too small. [ELF_E_DATA] Argument dst specified a destination buffer that overlaps with the source buffer. [ELF_E_DATA] The destination buffer for a conversion to memory had an alignment inappropriate for the underlying ELF type. [ELF_E_DATA] The source buffer for a conversion to file had an alignment inappropriate for the underlying ELF type. [ELF_E_UNIMPL] The version numbers for arguments dst and src were not identical. [ELF_E_UNIMPL] The argument src requested conversion for a type which is not currently supported. [ELF_E_VERSION] Argument src specified an unsupported version number.
elf(3), elf_getdata(3), gelf(3)