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factor out doBind from runChild

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Artturin 2023-09-14 04:36:25 +03:00
parent 630c2545d1
commit 11e47e7dfb
1 changed files with 20 additions and 0 deletions
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20
src/libstore/build/local-derivation-goal.cc
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@ -386,6 +386,26 @@ void LocalDerivationGoal::cleanupPostOutputsRegisteredModeNonCheck()
cleanupPostOutputsRegisteredModeCheck();
}
#if __linux__
static void doBind(const Path & source, const Path & target, bool optional = false) {
debug("bind mounting '%1%' to '%2%'", source, target);
struct stat st;
if (stat(source.c_str(), &st) == -1) {
if (optional && errno == ENOENT)
return;
else
throw SysError("getting attributes of path '%1%'", source);
}
if (S_ISDIR(st.st_mode))
createDirs(target);
else {
createDirs(dirOf(target));
writeFile(target, "");
}
if (mount(source.c_str(), target.c_str(), "", MS_BIND | MS_REC, 0) == -1)
throw SysError("bind mount from '%1%' to '%2%' failed", source, target);
};
#endif
void LocalDerivationGoal::startBuilder()
{