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{libutil,libstore}: Factor out chmodIfNeeded

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Using std::filesystem::path directly because we need .c_str()
anyway to interact with chmod. Path/string views don't have to be
null-terminated.
This commit is contained in:
Sergei Zimmerman 2025-03-05 02:43:11 +03:00
parent c99edc840c
commit 82f337de10
4 changed files with 57 additions and 4 deletions
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14
src/libutil/file-system.cc
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@ -776,4 +776,18 @@ std::filesystem::path makeParentCanonical(const std::filesystem::path & rawPath)
}
}
bool chmodIfNeeded(const fs::path & path, mode_t mode, mode_t mask)
{
auto pathString = path.string();
auto prevMode = lstat(pathString).st_mode;
if (((prevMode ^ mode) & mask) == 0)
return false;
if (chmod(pathString.c_str(), mode) != 0)
throw SysError("could not set permissions on '%s' to %o", pathString, mode);
return true;
}
} // namespace nix