svcadm(8)을 검색하려면 섹션에서 8 을 선택하고, 맨 페이지 이름에 svcadm을 입력하고 검색을 누른다.
elf_compress(3elf)
elf_compress(3ELF) ELF Library Functions elf_compress(3ELF)
NAME
elf_compress, elf_compress_gnu - compress/decompress section data
SYNOPSIS
cc [ flag ... ] file ... -lelf [ library ... ]
#include <libelf.h>
int elf_compress(Elf_Scn *scn, uint_t type, uint_t flags);
int elf_compress_gnu(Elf_Scn *scn, int inflate, uint_t flags);
DESCRIPTION
elf_compress() is used to compress or decompress an ELF section using
the standard ELF ABI compression format. The type argument specifies
the desired compression type, and can be one of the following.
0
Decompress any compressed content.
ELF_COMPRESS_ZLIB
ZLIB compression.
ELF_COMPRESS_ZSTD
ZStandard (ZSTD) compression.
elf_compress_gnu() is used to compress or decompress an ELF section us‐
ing the original GNU compression format. inflate is set to 1 to decom‐
press, and 0 to compress.
The flags argument is used to specify compression options. The flags
argument can be 0, or can be set to the following value.
ELF_CHF_FORCE
In rare cases, compression algorithms can produce data larger than
the original uncompressed data. The default behavior of elf_com‐
press() and elf_compress_gnu() are to compress a given section only
if the resulting section is reduced in size. Set ELF_CHF_FORCE to
require that the section always be compressed.
RETURN VALUES
If an error occurs, elf_compress() and elf_compress_gnu() return -1 and
set elf_errno().
If the section was not compressed because the resulting data would be
larger than the original, 0 is returned and the section is unaltered.
If the section is successfully compressed, elf_compress() and elf_com‐
press_gnu() update the section header, and the original data associated
with the section is replaced. Any information previously returned for
the section by elf32_getshdr(), elf64_shdr(), or elf_getdata(), is in‐
validated, and should no longer be referenced by the caller. The caller
should defer calling those functions until after calling elf_compress()
or elf_compress_gnu(), or should call them again afterward in order to
obtain the new information.
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE TYPEAT‐
TRIBUTE VALUE _ Interface StabilityCommitted _ MT-LevelMT-Safe
SEE ALSO
elf(3ELF), elf32_getchdr(3ELF), elf32_getshdr(3ELF),
elf32_xlatetof(3ELF), elf64_getchdr(3ELF), elf64_getshdr(3ELF),
elf64_xlatetof(3ELF), elf_errno(3ELF), elf_flagshdr(3ELF), elf_get‐
data(3ELF), elf_getscn(3ELF), elf_update(3ELF), libelf(3LIB), attrib‐
utes(7)
https://zlib.net/
https://facebook.github.io/zstd/zstd_manual.html
NOTES
elf_compress() and elf_compress_gnu() do not set the ELF_F_DIRTY flag
for the section. The caller must explicitly call elf_flagshdr() in or‐
der to keep the changes when elf_update() is used.
elf_compress() and elf_compress_gnu() will reject a compression attempt
for a section that is already compressed. The caller must first decom‐
press the section, and then compress it into the desired format.
elf_compress() and elf_compress_gnu() will reject a decompression at‐
tempt for a section that is already uncompressed.
The original GNU compression format is deprecated. elf_compress_gnu()
is provided in order to support existing objects. The use of elf_com‐
press() when creating new objects is recommended. The original GNU com‐
pression format can only be applied to sections with names that start
with .debug. On compression, that type requires the name to be altered
to start with .zdebug. elf_compress_gnu() does not provide the replace‐
ment name. The caller is responsible for providing the replacement
name.
Oracle Solaris 11.4 2 September 2025 elf_compress(3ELF)