| Commit message (Collapse) | Author | Age |
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as functions operate on a file descriptor
it should be safe to remove them; this
sets the stage for improvements to the
whitelist code
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Removes the inconsistency that some blacklisted
paths could be remounted (files specified explicitly)
and some could not. Now all blacklisted paths can
be mounted nosuid, nodev, noexec if users
specify this.
Also fixes the bug that mount id can indeed be 0.
Other than that no functional or algorithmic changes,
only readability improvements.
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Enables recursive remounting on very old kernels, which has some relevance
for SailfishOS community ports.
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always access files under control of the user
with effective user id of the user
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* move copyright statement to 2020
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my editor is weird sometimes
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* vanilla kernels before 3.15 don't expose a mount id in /proc/pid/fdinfo files.
This is still relevant on Ubuntu 14.04 with 3.13 kernel, CentOS 7 doesn't
have this problem. In this case fall back to simple a remount and print
a warning.
* drop euid switching as it doesn't really serve a purpose here (paths are not opened
in reading or writing mode, and we are not doing anything with it) and potentially
causes problems when suid programs are sandboxed
* more rigorous error handling
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noexec)
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cf. 949b924fba58dc05f1c21d6621f05047be5397f0 and 5c69440cc943f530830b8534d99d2061bdcfaf40
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