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Don't chmod symlink before moving outputs around

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Co-authored-by: Théophane Hufschmitt <regnat@users.noreply.github.com>
This commit is contained in:
John Ericson 2020-09-04 14:38:45 +00:00
parent b99062b023
commit c9f1ed912c
2 changed files with 11 additions and 3 deletions
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11
src/libstore/build.cc
View file

@ -2065,7 +2065,7 @@ void linkOrCopy(const Path & from, const Path & to)
file (e.g. 32000 of ext3), which is quite possible after a
'nix-store --optimise'. FIXME: actually, why don't we just
bind-mount in this case?
It can also fail with EPERM in BeegFS v7 and earlier versions
which don't allow hard-links to other directories */
if (errno != EMLINK && errno != EPERM)
@ -4101,8 +4101,13 @@ void DerivationGoal::registerOutputs()
if (lstat(actualPath.c_str(), &st))
throw SysError("getting attributes of path '%1%'", actualPath);
mode |= 0200;
if (chmod(actualPath.c_str(), mode) == -1)
throw SysError("changing mode of '%1%' to %2$o", actualPath, mode);
/* Try to change the perms, but only if the file isn't a
symlink as symlinks permissions are mostly ignored and
calling `chmod` on it will just forward the call to the
target of the link. */
if (!S_ISLNK(st.st_mode))
if (chmod(actualPath.c_str(), mode) == -1)
throw SysError("changing mode of '%1%' to %2$o", actualPath, mode);
}
if (rename(
actualPath.c_str(),

3
tests/content-addressed.nix
View file

@ -16,11 +16,14 @@ rec {
};
rootCA = mkDerivation {
name = "dependent";
outputs = [ "out" "dev" ];
buildCommand = ''
echo "building a CA derivation"
echo "The seed is ${toString seed}"
mkdir -p $out
echo ${rootLegacy}/hello > $out/dep
# test symlink at root
ln -s $out $dev
'';
__contentAddressed = true;
outputHashMode = "recursive";