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export const modeFix = (mode, isDir, portable) => {
mode &= 0o7777;
// in portable mode, use the minimum reasonable umask
// if this system creates files with 0o664 by default
// (as some linux distros do), then we'll write the
// archive with 0o644 instead. Also, don't ever create
// a file that is not readable/writable by the owner.
if (portable) {
mode = (mode | 0o600) & ~0o22;
}
// if dirs are readable, then they should be listable
if (isDir) {
if (mode & 0o400) {
mode |= 0o100;
}
if (mode & 0o40) {
mode |= 0o10;
}
if (mode & 0o4) {
mode |= 0o1;
}
}
return mode;
};
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