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sandbox: allow SystemVersionCompat.plist on Darwin

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For whatever reason, many programs trying to access SystemVersion.plist
also open SystemVersionCompat.plist; this includes Python code and
coreutils’ `cat(1)` (but not the native macOS `/bin/cat`). Illustratory
`dtruss(1m)` output:

    open("/System/Library/CoreServices/SystemVersion.plist\0", 0x0, 0x0)		 = 3 0
    open("/System/Library/CoreServices/SystemVersionCompat.plist\0", 0x0, 0x0)		 = 4 0

I assume this is a Big Sur change relating to the 10.16.x/11.x
version compatibility divide and that it’s something along the lines of
a hook inside libSystem.

Fixes a lot of sandboxed package builds under Big Sur.
This commit is contained in:
Emily 2021-05-17 00:15:30 +01:00
parent de9e43c2ea
commit 559a504da7
1 changed files with 3 additions and 1 deletions
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4
src/libstore/sandbox-defaults.sb
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@ -32,7 +32,9 @@
(literal "/tmp") (subpath TMPDIR))
; Some packages like to read the system version.
(allow file-read* (literal "/System/Library/CoreServices/SystemVersion.plist"))
(allow file-read*
(literal "/System/Library/CoreServices/SystemVersion.plist")
(literal "/System/Library/CoreServices/SystemVersionCompat.plist"))
; Without this line clang cannot write to /dev/null, breaking some configure tests.
(allow file-read-metadata (literal "/dev"))