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elf32_checksum, elf64_checksum - compute the checksum for a 32-bit or 64-bit ELF object file
Contents
Attributes
For an explanation of the terms used in this section, see attributes(7).
┌─────────────────────────────────────────────────────────────────────────────┬───────────────┬─────────┐
│ Interface │ Attribute │ Value │
├─────────────────────────────────────────────────────────────────────────────┼───────────────┼─────────┤
│ elf32_checksum(), elf64_checksum() │ Thread safety │ MT-Safe │
└─────────────────────────────────────────────────────────────────────────────┴───────────────┴─────────┘
Description
Compute a checksum for the ELF object file referred to by elf. The checksum is computed from permanent
parts of the ELF file and the result is repeatable. To be repeatable, strippable sections are not
included in computing the checksum. SHT_NOBITS sections are also not included when computing the
checksum. The checksum can be used as a value for DT_CHECKSUM.
Name
elf32_checksum, elf64_checksum - compute the checksum for a 32-bit or 64-bit ELF object file
Parameters
elf The ELF object file for which the checksum is to be computed.
Reporting Bugs
Report bugs to <elfutils-devel@sourceware.org> or https://sourceware.org/bugzilla/.
Libelf 2024-08-14 ELF32_CHECKSUM(3)
Return Value
On success, return the computed checksum. If an error occurs, return -1 and set a libelf error code. The
checksum is always calculated as a 4-byte value. If longint is larger than 4 bytes, then the checksum
will be extended by padding with zeros.
See Also
elf_errno(3), libelf(3), elf(5)
Synopsis
#include<libelf.h>longintelf32_checksum(Elf*elf);longintelf64_checksum(Elf*elf);
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