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| author | Kees Cook <kees+treewide@kernel.org> | 2026-09-02 15:31:14 -0700 |
|---|---|---|
| committer | Kees Cook <kees@kernel.org> | 2026-09-04 21:37:00 -0700 |
| commit | 3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d (patch) | |
| tree | c65086f9bdcd48c6360fb7cb4598bca084da1f32 /lib/xz/Kconfig | |
| download | linux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.tar.gz linux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.zip | |
treewide: refresh kmalloc_obj() conversionsgrafted
This is another run of the Coccinelle script for converting kmalloc()
family of allocations to kmalloc_obj() via the existing rules in
scripts/coccinelle/api/kmalloc_objs.cocci
This catches both the set of kmalloc() uses added since the first
kmalloc_obj() conversions in v7.0 and adds a large group missed in the
first pass due to Coccinelle not interacting well with the cleanup.h
scoped_...() family of macros[1]. I worked around this with spatch's
"--macro-file" argument to a file with all the scoped_...() macros mapped
to Coccinelle's YACFE_ITERATOR[2] as that was the closest viable control
flow indicator I could find.
Build tested allmodconfig on x86, arm64, arm, loongarch, mips, powerpc,
riscv, and s390 with no new warnings.
Link: https://lore.kernel.org/lkml/202609021314.8A9C0B8@keescook/ [1]
Link: https://github.com/coccinelle/coccinelle/blob/master/standard.h [2]
Signed-off-by: Kees Cook <kees+treewide@kernel.org>
Diffstat (limited to 'lib/xz/Kconfig')
| -rw-r--r-- | lib/xz/Kconfig | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/lib/xz/Kconfig b/lib/xz/Kconfig new file mode 100644 index 000000000..20aa459bf --- /dev/null +++ b/lib/xz/Kconfig @@ -0,0 +1,77 @@ +# SPDX-License-Identifier: GPL-2.0-only +config XZ_DEC + tristate "XZ decompression support" + select CRC32 + help + LZMA2 compression algorithm and BCJ filters are supported using + the .xz file format as the container. For integrity checking, + CRC32 is supported. See Documentation/staging/xz.rst for more + information. + +if XZ_DEC + +config XZ_DEC_X86 + bool "x86 BCJ filter decoder" if EXPERT + default y + select XZ_DEC_BCJ + +config XZ_DEC_POWERPC + bool "PowerPC BCJ filter decoder" if EXPERT + default y + select XZ_DEC_BCJ + +config XZ_DEC_ARM + bool "ARM BCJ filter decoder" if EXPERT + default y + select XZ_DEC_BCJ + +config XZ_DEC_ARMTHUMB + bool "ARM-Thumb BCJ filter decoder" if EXPERT + default y + select XZ_DEC_BCJ + +config XZ_DEC_ARM64 + bool "ARM64 BCJ filter decoder" if EXPERT + default y + select XZ_DEC_BCJ + +config XZ_DEC_SPARC + bool "SPARC BCJ filter decoder" if EXPERT + default y + select XZ_DEC_BCJ + +config XZ_DEC_RISCV + bool "RISC-V BCJ filter decoder" if EXPERT + default y + select XZ_DEC_BCJ + +config XZ_DEC_MICROLZMA + bool "MicroLZMA decoder" + default n + help + MicroLZMA is a header format variant where the first byte + of a raw LZMA stream (without the end of stream marker) has + been replaced with a bitwise-negation of the lc/lp/pb + properties byte. MicroLZMA was created to be used in EROFS + but can be used by other things too where wasting minimal + amount of space for headers is important. + + Unless you know that you need this, say N. + +endif + +config XZ_DEC_BCJ + bool + default n + +config XZ_DEC_TEST + tristate "XZ decompressor tester" + default n + depends on XZ_DEC + help + This allows passing .xz files to the in-kernel XZ decoder via + a character special file. It calculates CRC32 of the decompressed + data and writes diagnostics to the system log. + + Unless you are developing the XZ decoder, you don't need this + and should say N. |
