mirror of
https://github.com/dynup/kpatch
synced 2024-12-13 00:44:34 +00:00
07433e98c0
To support building out-of-tree kernel modules, the source tree prefix
is attempted to be stripped from change object file paths to make them
relative. However, if the path is already relative, the change can
strip a substring instead, resulting in build errors.
Ensure just the prefix is stripped instead of any substring.
Fixes: #1282
Fixes: 51a8fad34f ("Add support for building out-of-tree modules")
92 lines
2.0 KiB
Bash
Executable File
92 lines
2.0 KiB
Bash
Executable File
#!/bin/bash
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if [[ ${KPATCH_GCC_DEBUG:-0} -ne 0 ]]; then
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set -o xtrace
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fi
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TOOLCHAINCMD="$1"
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shift
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if [[ -z "$KPATCH_GCC_TEMPDIR" ]]; then
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exec "$TOOLCHAINCMD" "$@"
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fi
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declare -a args=("$@")
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if [[ "$TOOLCHAINCMD" =~ ^(.*-)?gcc$ || "$TOOLCHAINCMD" =~ ^(.*-)?clang$ ]] ; then
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while [ "$#" -gt 0 ]; do
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if [ "$1" = "-o" ]; then
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obj="$2"
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# skip copying the temporary .o files created by
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# recordmcount.pl
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[[ "$obj" = */.tmp_mc_*.o ]] && break;
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[[ "$obj" = */.tmp_*.o ]] && obj="${obj/.tmp_/}"
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relobj=${obj##$KPATCH_GCC_SRCDIR/}
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case "$relobj" in
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*.mod.o|\
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*built-in.o|\
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*built-in.a|\
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vmlinux.o|\
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.tmp_kallsyms1.o|\
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.tmp_kallsyms2.o|\
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init/version.o|\
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arch/x86/boot/version.o|\
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arch/x86/boot/compressed/eboot.o|\
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arch/x86/boot/header.o|\
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arch/x86/boot/compressed/efi_stub_64.o|\
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arch/x86/boot/compressed/piggy.o|\
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kernel/system_certificates.o|\
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arch/x86/vdso/*|\
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arch/x86/entry/vdso/*|\
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drivers/firmware/efi/libstub/*|\
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arch/powerpc/kernel/prom_init.o|\
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arch/powerpc/kernel/vdso64/*|\
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arch/s390/boot/*|\
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arch/s390/purgatory/*|\
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arch/s390/kernel/vdso64/*|\
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lib/*|\
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.*.o|\
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*/.lib_exports.o)
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break
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;;
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*.o)
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mkdir -p "$KPATCH_GCC_TEMPDIR/orig/$(dirname "$relobj")"
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[[ -e "$obj" ]] && cp -f "$obj" "$KPATCH_GCC_TEMPDIR/orig/$relobj"
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echo "$relobj" >> "$KPATCH_GCC_TEMPDIR/changed_objs"
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break
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;;
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*)
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break
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;;
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esac
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fi
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shift
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done
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elif [[ "$TOOLCHAINCMD" =~ ^(.*-)?ld || "$TOOLCHAINCMD" =~ ^(.*-)?ld.lld ]] ; then
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while [ "$#" -gt 0 ]; do
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if [ "$1" = "-o" ]; then
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obj="$2"
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relobj=${obj//$KPATCH_GCC_SRCDIR\//}
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case "$obj" in
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*.ko)
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mkdir -p "$KPATCH_GCC_TEMPDIR/module/$(dirname "$relobj")"
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cp -f "$obj" "$KPATCH_GCC_TEMPDIR/module/$relobj"
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break
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;;
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.tmp_vmlinux*|vmlinux)
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args+=(--warn-unresolved-symbols)
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break
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;;
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*)
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break
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;;
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esac
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fi
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shift
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done
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fi
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exec "$TOOLCHAINCMD" "${args[@]}"
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