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mike155
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Joined: 17 Sep 2010
Posts: 4438
Location: Frankfurt, Germany
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 Posted: Mon Sep 18, 2017 12:11 pm Post subject: [solved] zstd -t modifies /dev/null file mode bits |
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I installed app-arch/zstd-1.3.0. It works fine. But if I run "zstd -t" as root, it modifies file mode bits of /dev/null:
| Code: | # ls -la /dev/null
crw-rw-rw- 1 root root 1, 3 Sep 18 13:12 /dev/null
# zstd -t linux.tgz
linux.tgz : 27002880 bytes
# ls -la /dev/null
crw-r----- 1 root root 1, 3 Sep 18 13:12 /dev/null
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A strace shows:
| Code: | # strace -o trace.txt -f zstd -t linux.tgz
linux.tgz : 27002880 bytes
# grep "/dev/null" trace.txt
20269 open("/dev/null", O_WRONLY|O_CREAT|O_TRUNC, 0666) = 3
20269 utime("/dev/null", {actime=2017-09-18T13:50:14+0200, modtime=2017-09-18T13:12:41+0200}) = 0
20269 chown("/dev/null", 0, 0) = 0
20269 chmod("/dev/null", 0640) = 0
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What the hell is going on? Does anyone else see this?
Last edited by mike155 on Mon Sep 18, 2017 9:18 pm; edited 1 time in total |
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mike155
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Posts: 4438
Location: Frankfurt, Germany
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mike155
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Joined: 17 Sep 2010
Posts: 4438
Location: Frankfurt, Germany
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| Posted: Mon Sep 18, 2017 9:16 pm Post subject: |
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| Upstream confirmed the bug and proposed a fix, which will probably be part of the next release. |
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