Files
lix/tests/functional/build.sh
T
Raito Bezarius 22a1d233bb libstore: fallback on creating a safe space in the default tempdir
If `settings.buildDir` cannot be written to, because we are in a chroot
store, unprivileged or anything.

We can and should always gracefully fallback to a *secure* location
inside of /tmp, i.e. `/tmp/<a directory under 0700>/<our temporary
directory for build under 0700>/...`.

This does not reintroduce CVE-2025-52991 because we are creating a
directory in-between compared to creating only ONE level of directory.

Under macOS, the first level of directory has actually mode 0755 instead
of 0700 as macOS often do not possess the right primitives to chroot
inside of these directories, leading to
https://github.com/NixOS/nix/pull/11031.

Thanks to Emily for the heads-up on this type of matter.

Fixes #876.

Change-Id: Ie521202923f763225e1901ab1b9b6c6132aaf548
Signed-off-by: Raito Bezarius <raito@lix.systems>
2025-06-29 20:36:57 +00:00

182 lines
7.1 KiB
Bash

source common.sh
clearStore
# Make sure that 'nix build' returns all outputs by default.
nix build -f multiple-outputs.nix --json a b --no-link | jq --exit-status '
(.[0] |
(.drvPath | match(".*multiple-outputs-a.drv")) and
(.outputs |
(keys | length == 2) and
(.first | match(".*multiple-outputs-a-first")) and
(.second | match(".*multiple-outputs-a-second"))))
and (.[1] |
(.drvPath | match(".*multiple-outputs-b.drv")) and
(.outputs |
(keys | length == 1) and
(.out | match(".*multiple-outputs-b"))))
'
# Test output selection using the '^' syntax.
nix build -f multiple-outputs.nix --json a^first --no-link | jq --exit-status '
(.[0] |
(.drvPath | match(".*multiple-outputs-a.drv")) and
(.outputs | keys == ["first"]))
'
nix build -f multiple-outputs.nix --json a^second,first --no-link | jq --exit-status '
(.[0] |
(.drvPath | match(".*multiple-outputs-a.drv")) and
(.outputs | keys == ["first", "second"]))
'
nix build -f multiple-outputs.nix --json 'a^*' --no-link | jq --exit-status '
(.[0] |
(.drvPath | match(".*multiple-outputs-a.drv")) and
(.outputs | keys == ["first", "second"]))
'
# Test that 'outputsToInstall' is respected by default.
nix build -f multiple-outputs.nix --json e --no-link | jq --exit-status '
(.[0] |
(.drvPath | match(".*multiple-outputs-e.drv")) and
(.outputs | keys == ["a_a", "b"]))
'
# But not when it's overriden.
nix build -f multiple-outputs.nix --json e^a_a --no-link
nix build -f multiple-outputs.nix --json e^a_a --no-link | jq --exit-status '
(.[0] |
(.drvPath | match(".*multiple-outputs-e.drv")) and
(.outputs | keys == ["a_a"]))
'
nix build -f multiple-outputs.nix --json 'e^*' --no-link | jq --exit-status '
(.[0] |
(.drvPath | match(".*multiple-outputs-e.drv")) and
(.outputs | keys == ["a_a", "b", "c"]))
'
# test buidling from non-drv attr path
nix build -f multiple-outputs.nix --json 'e.a_a.outPath' --no-link | jq --exit-status '
(.[0] |
(.drvPath | match(".*multiple-outputs-e.drv")) and
(.outputs | keys == ["a_a"]))
'
# Illegal type of string context
expectStderr 1 nix build -f multiple-outputs.nix 'e.a_a.drvPath' \
| grepQuiet "has a context which refers to a complete source and binary closure."
# No string context
expectStderr 1 nix build --expr '""' --no-link \
| grepQuiet "has 0 entries in its context. It should only have exactly one entry"
# Too much string context
expectStderr 1 nix build --impure --expr 'with (import ./multiple-outputs.nix).e.a_a; "${drvPath}${outPath}"' --no-link \
| grepQuiet "has 2 entries in its context. It should only have exactly one entry"
nix build --impure --json --expr 'builtins.unsafeDiscardOutputDependency (import ./multiple-outputs.nix).e.a_a.drvPath' --no-link | jq --exit-status '
(.[0] | match(".*multiple-outputs-e.drv"))
'
# Test building from raw store path to drv not expression.
drv=$(nix eval -f multiple-outputs.nix --raw a.drvPath)
if nix build "$drv^not-an-output" --no-link --json; then
fail "'not-an-output' should fail to build"
fi
if nix build "$drv^" --no-link --json; then
fail "'empty outputs list' should fail to build"
fi
if nix build "$drv^*nope" --no-link --json; then
fail "'* must be entire string' should fail to build"
fi
nix build "$drv^first" --no-link --json | jq --exit-status '
(.[0] |
(.drvPath | match(".*multiple-outputs-a.drv")) and
(.outputs |
(keys | length == 1) and
(.first | match(".*multiple-outputs-a-first")) and
(has("second") | not)))
'
nix build "$drv^first,second" --no-link --json | jq --exit-status '
(.[0] |
(.drvPath | match(".*multiple-outputs-a.drv")) and
(.outputs |
(keys | length == 2) and
(.first | match(".*multiple-outputs-a-first")) and
(.second | match(".*multiple-outputs-a-second"))))
'
nix build "$drv^*" --no-link --json | jq --exit-status '
(.[0] |
(.drvPath | match(".*multiple-outputs-a.drv")) and
(.outputs |
(keys | length == 2) and
(.first | match(".*multiple-outputs-a-first")) and
(.second | match(".*multiple-outputs-a-second"))))
'
# Make sure that `--impure` works (regression test for https://github.com/NixOS/nix/issues/6488)
nix build --impure -f multiple-outputs.nix --json e --no-link | jq --exit-status '
(.[0] |
(.drvPath | match(".*multiple-outputs-e.drv")) and
(.outputs | keys == ["a_a", "b"]))
'
# Make sure that `--stdin` works and does not apply any defaults
printf "" | nix build --no-link --stdin --json | jq --exit-status '. == []'
printf "%s\n" "$drv^*" | nix build --no-link --stdin --json | jq --exit-status '.[0]|has("drvPath")'
# URL reporting
out="$(nix-build fod-failing.nix -A x1 2>&1)" && status=0 || status=$?
test "$status" = 102
test "$(<<<"$out" grep -E '^error:' | wc -l)" = 1
<<<"$out" grepQuiet -E "hash mismatch in fixed-output derivation '.*-x1\\.drv'"
<<<"$out" grepQuiet -E "likely URL: https://meow.puppy.forge/puppy.tar.gz"
# --keep-going and FOD
out="$(nix build -f fod-failing.nix -L 2>&1)" && status=0 || status=$?
test "$status" = 1
# at least one "hash mismatch" error, one "build of ... failed"
test "$(<<<"$out" grep -E '^error:' | wc -l)" -ge 2
<<<"$out" grepQuiet -E "hash mismatch in fixed-output derivation '.*-x.\\.drv'"
<<<"$out" grepQuiet -E "likely URL: "
<<<"$out" grepQuiet -E "error: build of '.*-x[1-4]\\.drv\\^out', '.*-x[1-4]\\.drv\\^out', '.*-x[1-4]\\.drv\\^out', '.*-x[1-4]\\.drv\\^out' failed"
out="$(nix build -f fod-failing.nix -L x1 x2 x3 --keep-going 2>&1)" && status=0 || status=$?
test "$status" = 1
# three "hash mismatch" errors - for each failing fod, one "build of ... failed"
test "$(<<<"$out" grep -E '^error:' | wc -l)" = 4
<<<"$out" grepQuiet -E "hash mismatch in fixed-output derivation '.*-x1\\.drv'"
<<<"$out" grepQuiet -E "hash mismatch in fixed-output derivation '.*-x3\\.drv'"
<<<"$out" grepQuiet -E "hash mismatch in fixed-output derivation '.*-x2\\.drv'"
<<<"$out" grepQuiet -E "likely URL: https://meow.puppy.forge/puppy.tar.gz"
<<<"$out" grepQuiet -E "likely URL: https://kitty.forge/cat.tar.gz"
<<<"$out" grepQuiet -E "likely URL: \(unknown\)"
<<<"$out" grepQuiet -E "error: build of '.*-x[1-3]\\.drv\\^out', '.*-x[1-3]\\.drv\\^out', '.*-x[1-3]\\.drv\\^out' failed"
out="$(nix build -f fod-failing.nix -L x4 2>&1)" && status=0 || status=$?
test "$status" = 1
test "$(<<<"$out" grep -E '^error:' | wc -l)" -ge 2
<<<"$out" grepQuiet -E "error: [12] dependencies of derivation '.*-x4\\.drv' failed to build"
<<<"$out" grepQuiet -E "hash mismatch in fixed-output derivation '.*-x[23]\\.drv'"
out="$(nix build -f fod-failing.nix -L x4 --keep-going 2>&1)" && status=0 || status=$?
test "$status" = 1
test "$(<<<"$out" grep -E '^error:' | wc -l)" = 3
<<<"$out" grepQuiet -E "error: 2 dependencies of derivation '.*-x4\\.drv' failed to build"
<<<"$out" grepQuiet -vE "hash mismatch in fixed-output derivation '.*-x3\\.drv'"
<<<"$out" grepQuiet -vE "hash mismatch in fixed-output derivation '.*-x2\\.drv'"
# Ensure when if the system build dir is inaccessible, we can still build things
BUILD_DIR=$(mktemp -d)
chmod 0000 "$BUILD_DIR"
nix --build-dir "$BUILD_DIR" build -E 'with import ./config.nix; mkDerivation { name = "test"; buildCommand = "echo rawr > $out"; }' --impure --no-link