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more documentation for TMPDIR

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Johannes Schauer Marin Rodrigues 2022-05-22 02:57:42 +02:00
parent 29b23bbcbc
commit 5c5f7de898
Signed by: josch
GPG key ID: F2CBA5C78FBD83E1
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@ -7032,7 +7032,12 @@ or fill them with reproducible content:
When creating a tarball, a temporary directory is populated with the rootfs
before the tarball is packed. The location of that temporary directory will be
in F</tmp> or the location pointed to by C<TMPDIR> if that environment variable
is set.
is set. Setting C<TMPDIR> to a different directory than F</tmp> is useful if
you have F</tmp> on a tmpfs that is too small for your rootfs.
If you set C<TMPDIR> in B<unshare> mode, then the unshared user must be able to
access the directory. This means that the directory itself must be
world-writable and all its ancestors must be at least world-executable.
Since C<TMPDIR> is only valid outside the chroot, the variable is being unset
when running hook scripts. If you need a valid temporary directory in a hook,