dlopen-note: move all dlopen notes to dlopen-note.h
This also switches all these notes to be defined via SD_ELF_NOTE_DLOPEN_ANCHORED(). Consequently, any notes added within unreachable or unused functions will be automatically garbage-collected by the linker (--gc-sections) instead of bloating the final binary. E.g. unused p11-kit library dependency is now dropped from systemd-repart.standalone binary. Before: ``` $ systemd-analyze dlopen-metadata build/systemd-repart.standalone FEATURE DESCRIPTION SONAME PRIORITY cryptsetup Support for disk encryption, integrity, and authentication libcryptsetup.so.12 recommended blkid Support for block device identification libblkid.so.1 required libcrypto Support for cryptographic operations libcrypto.so.4 libcrypto.so.3 recommended mount Support for mount enumeration libmount.so.1 required fdisk Support for reading and writing partition tables libfdisk.so.1 required blkid Support for block device identification libblkid.so.1 recommended libcrypto Support for cryptographic operations libcrypto.so.4 libcrypto.so.3 suggested cryptsetup Support for disk encryption, integrity, and authentication libcryptsetup.so.12 suggested fdisk Support for reading and writing partition tables libfdisk.so.1 suggested idn Support for internationalized domain names libidn2.so.0 suggested mount Support for mount enumeration libmount.so.1 recommended selinux Support for SELinux libselinux.so.1 recommended tpm Support for TPM libtss2-esys.so.0 suggested tpm Support for TPM libtss2-rc.so.0 suggested tpm Support for TPM libtss2-mu.so.0 suggested tpm Support for TPM libtss2-tcti-device.so.0 suggested p11-kit Support for PKCS11 hardware tokens libp11-kit.so.0 suggested ``` After: ``` $ systemd-analyze dlopen-metadata build/systemd-repart.standalone FEATURE DESCRIPTION SONAME PRIORITY cryptsetup Support for disk encryption, integrity, and authentication libcryptsetup.so.12 recommended blkid Support for block device identification libblkid.so.1 required libcrypto Support for cryptographic operations libcrypto.so.4 libcrypto.so.3 recommended mount Support for mount enumeration libmount.so.1 required fdisk Support for reading and writing partition tables libfdisk.so.1 required blkid Support for block device identification libblkid.so.1 recommended libcrypto Support for cryptographic operations libcrypto.so.4 libcrypto.so.3 suggested cryptsetup Support for disk encryption, integrity, and authentication libcryptsetup.so.12 suggested fdisk Support for reading and writing partition tables libfdisk.so.1 suggested mount Support for mount enumeration libmount.so.1 recommended selinux Support for SELinux libselinux.so.1 recommended tpm Support for TPM libtss2-esys.so.0 suggested tpm Support for TPM libtss2-rc.so.0 suggested tpm Support for TPM libtss2-mu.so.0 suggested tpm Support for TPM libtss2-tcti-device.so.0 suggested ```
This commit is contained in:
Yu Watanabe
@@ -0,0 +1,91 @@
|
||||
/* SPDX-License-Identifier: LGPL-2.1-or-later */
|
||||
#pragma once
|
||||
|
||||
#include "sd-dlopen.h"
|
||||
|
||||
#include "basic-forward.h"
|
||||
#include "strv.h"
|
||||
|
||||
/* Avoid invalid priority. */
|
||||
#define _DLOPEN_CHECK_PRIORITY_required 1
|
||||
#define _DLOPEN_CHECK_PRIORITY_recommended 1
|
||||
#define _DLOPEN_CHECK_PRIORITY_suggested 1
|
||||
|
||||
/* Unlike SD_ELF_NOTE_DLOPEN_ANCHORED(), this takes feature and priority without quotation. */
|
||||
#define ELF_NOTE_DLOPEN_ANCHORED(feature, description, priority, ...) \
|
||||
assert_cc(_DLOPEN_CHECK_PRIORITY_##priority); \
|
||||
SD_ELF_NOTE_DLOPEN_ANCHORED( \
|
||||
feature##_##priority, \
|
||||
STRINGIFY(feature), \
|
||||
description, \
|
||||
STRINGIFY(priority), \
|
||||
__VA_ARGS__)
|
||||
|
||||
#if HAVE_BZIP2
|
||||
# define LIBBZ2_NOTE(priority) \
|
||||
ELF_NOTE_DLOPEN_ANCHORED( \
|
||||
bzip2, \
|
||||
"Support bzip2 compression and decompression", \
|
||||
priority, \
|
||||
"libbz2.so.1")
|
||||
#else
|
||||
# define LIBBZ2_NOTE(priority)
|
||||
#endif
|
||||
|
||||
#if HAVE_LZ4
|
||||
# define LIBLZ4_NOTE(priority) \
|
||||
ELF_NOTE_DLOPEN_ANCHORED( \
|
||||
lz4, \
|
||||
"Support lz4 compression in journal and coredump files", \
|
||||
priority, \
|
||||
"liblz4.so.1")
|
||||
#else
|
||||
# define LIBLZ4_NOTE(priority)
|
||||
#endif
|
||||
|
||||
#if HAVE_XZ
|
||||
# define LIBLZMA_NOTE(priority) \
|
||||
ELF_NOTE_DLOPEN_ANCHORED( \
|
||||
lzma, \
|
||||
"Support lzma compression in journal and coredump files", \
|
||||
priority, \
|
||||
"liblzma.so.5")
|
||||
#else
|
||||
# define LIBLZMA_NOTE(priority)
|
||||
#endif
|
||||
|
||||
#if HAVE_ZLIB
|
||||
# define LIBZ_NOTE(priority) \
|
||||
ELF_NOTE_DLOPEN_ANCHORED( \
|
||||
zlib, \
|
||||
"Support gzip compression and decompression", \
|
||||
priority, \
|
||||
"libz.so.1")
|
||||
#else
|
||||
# define LIBZ_NOTE(priority)
|
||||
#endif
|
||||
|
||||
#if HAVE_ZSTD
|
||||
# define LIBZSTD_NOTE(priority) \
|
||||
ELF_NOTE_DLOPEN_ANCHORED( \
|
||||
zstd, \
|
||||
"Support zstd compression in journal and coredump files", \
|
||||
priority, \
|
||||
"libzstd.so.1")
|
||||
#else
|
||||
# define LIBZSTD_NOTE(priority)
|
||||
#endif
|
||||
|
||||
#define COMPRESS_NOTE(priority) \
|
||||
LIBBZ2_NOTE(priority); \
|
||||
LIBLZ4_NOTE(priority); \
|
||||
LIBLZMA_NOTE(priority); \
|
||||
LIBZ_NOTE(priority); \
|
||||
LIBZSTD_NOTE(priority)
|
||||
|
||||
#define COMPRESS_DEFAULT_NOTE \
|
||||
LIBBZ2_NOTE(suggested); \
|
||||
LIBLZ4_NOTE(COMPRESSION_PRIORITY_LZ4); \
|
||||
LIBLZMA_NOTE(COMPRESSION_PRIORITY_XZ); \
|
||||
LIBZ_NOTE(suggested); \
|
||||
LIBZSTD_NOTE(COMPRESSION_PRIORITY_ZSTD)
|
||||
Reference in New Issue
Block a user