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Diffstat (limited to 'tests/tst-library-search-runner.sh')
| -rwxr-xr-x | tests/tst-library-search-runner.sh | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/tests/tst-library-search-runner.sh b/tests/tst-library-search-runner.sh new file mode 100755 index 0000000..6c5ee73 --- /dev/null +++ b/tests/tst-library-search-runner.sh @@ -0,0 +1,118 @@ +#!/bin/sh +set -eu + +: "${CPU_AS:?}" "${CPU_LD:?}" "${CPU_RUN:?}" "${TEST_SRCDIR:?}" + +TMP=${TMPDIR:-/tmp}/libmcpu-library-search-$$ +HOME="$TMP/home" +export HOME +mkdir -p "$HOME/.mcpu/etc" "$TMP/root/lib" "$TMP/first" "$TMP/second" "$TMP/user/lib" +trap 'rm -rf "$TMP"' EXIT HUP INT TERM + +EXAMPLES=`cd "$TEST_SRCDIR/fixtures/shared-libs" && pwd` + +"$CPU_AS" -o "$TMP/main.o" "$EXAMPLES/dynamic-main.s" +"$CPU_AS" -o "$TMP/a.o" "$EXAMPLES/dynamic-liba.s" +"$CPU_AS" -o "$TMP/b.o" "$EXAMPLES/dynamic-libb.s" +"$CPU_LD" --dynamic --stack-size=4096 --no-heap \ + -o "$TMP/main-program" "$TMP/main.o" +"$CPU_LD" --shared --soname=liba.so.1 -o "$TMP/liba.so" "$TMP/a.o" +"$CPU_LD" --shared --soname=libb.so.1 -o "$TMP/libb.so" "$TMP/b.o" + +cp "$TMP/liba.so" "$TMP/root/lib/liba.so" +cp "$TMP/libb.so" "$TMP/root/lib/libb.so" +cp "$TMP/liba.so" "$TMP/root/lib/libpick.so" +cp "$TMP/libb.so" "$TMP/first/libpick.so" +cp "$TMP/liba.so" "$TMP/first/libfirst.so" +cp "$TMP/liba.so" "$TMP/first/liborder.so" +cp "$TMP/libb.so" "$TMP/second/libpick.so" +cp "$TMP/libb.so" "$TMP/second/libsecond.so" +cp "$TMP/libb.so" "$TMP/second/liborder.so" + +# A bare preload name is resolved through <sys-root>/lib. +[ "`"$CPU_RUN" --sys-root="$TMP/root" --int-reg=r64@0x00018 \ + --ldpreload=liba.so "$TMP/main-program"`" = 42 ] + +# Explicit --library-path directories have priority over the system tree. +[ "`"$CPU_RUN" --sys-root="$TMP/root" --library-path="$TMP/first" \ + --int-reg=r64@0x00018 --ldpreload=libpick.so "$TMP/main-program"`" = 43 ] + +# Colon-list order is the actual search order. +[ "`"$CPU_RUN" --sys-root="$TMP/root" \ + --library-path="$TMP/first:$TMP/second" --int-reg=r64@0x00018 \ + --ldpreload=liborder.so "$TMP/main-program"`" = 42 ] +[ "`"$CPU_RUN" --sys-root="$TMP/root" \ + --library-path="$TMP/second:$TMP/first" --int-reg=r64@0x00018 \ + --ldpreload=liborder.so "$TMP/main-program"`" = 43 ] + +# Repeated --library-path occurrences append in command-line order. +cat > "$TMP/run-search.expected" <<EOT +libraries: + $TMP/first + $TMP/second + $TMP/root/lib +EOT +"$CPU_RUN" --sys-root="$TMP/root" --library-path="$TMP/first" \ + --library-path "$TMP/second" --print-search-dirs > "$TMP/run-search.txt" +cmp "$TMP/run-search.expected" "$TMP/run-search.txt" + +# mcpu-ld uses the same common search state through -L. +cat > "$TMP/ld-search.expected" <<EOT +libraries: + $TMP/first + $TMP/second + $TMP/root/lib +EOT +"$CPU_LD" --sys-root="$TMP/root" -L"$TMP/first" -L "$TMP/second" \ + --print-search-dirs > "$TMP/ld-search.txt" +cmp "$TMP/ld-search.expected" "$TMP/ld-search.txt" + +# Explicit pathnames keep the historical behavior and bypass name lookup. +[ "`"$CPU_RUN" --sys-root="$TMP/root" --library-path="$TMP/first" \ + --int-reg=r64@0x00018 --ldpreload="$TMP/root/lib/liba.so" \ + "$TMP/main-program"`" = 42 ] + +# Resolving a list does not change the established rightmost preload priority. +[ "`"$CPU_RUN" --sys-root="$TMP/root" --int-reg=r64@0x00018 \ + --ldpreload=liba.so:libb.so "$TMP/main-program"`" = 43 ] +[ "`"$CPU_RUN" --sys-root="$TMP/root" --int-reg=r64@0x00018 \ + --ldpreload=libb.so:liba.so "$TMP/main-program"`" = 42 ] + +# The configured system path participates in real name lookup. +cp "$TMP/liba.so" "$TMP/user/lib/libuser.so" +cat > "$HOME/.mcpu/etc/mcpu-ld.conf" <<EOC +MCPU_LD_SYSTEM_LIBRARY_PATH = $TMP/user/lib; +EOC +[ "`"$CPU_RUN" --int-reg=r64@0x00018 --ldpreload=libuser.so \ + "$TMP/main-program"`" = 42 ] + +# An explicitly empty system path has no fallback, while an explicit path works. +printf '%s\n' 'MCPU_LD_SYSTEM_LIBRARY_PATH = ;' \ + > "$HOME/.mcpu/etc/mcpu-ld.conf" +if "$CPU_RUN" --ldpreload=liba.so "$TMP/main-program" >/dev/null 2>&1; then + echo "bare preload unexpectedly resolved with empty system path" >&2 + exit 1 +fi +[ "`"$CPU_RUN" --library-path="$TMP/root/lib" --int-reg=r64@0x00018 \ + --ldpreload=liba.so "$TMP/main-program"`" = 42 ] + +# Missing names and empty path-list elements are errors. +if "$CPU_RUN" --sys-root="$TMP/root" --ldpreload=does-not-exist.so \ + "$TMP/main-program" >/dev/null 2>&1; then + echo "missing preload name unexpectedly resolved" >&2 + exit 1 +fi +if "$CPU_RUN" --sys-root="$TMP/root" --library-path="$TMP/first::$TMP/second" \ + --print-search-dirs >/dev/null 2>&1; then + echo "empty --library-path element unexpectedly accepted" >&2 + exit 1 +fi + +# 0.2.15 exposes -l for real link-time dependency resolution. Search-dir +# diagnostics remain independent of whether a later link uses library operands. +"$CPU_LD" --help 2>&1 | grep -q -- '-l <name>' + +"$CPU_RUN" --help 2>&1 | grep -q -- '--library-path' +"$CPU_LD" --help 2>&1 | grep -q -- '-L <dir>' + +exit 0 |