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Merge bitcoin/bitcoin#24659: util: add linkat to syscall sandbox (AllowFileSystem)

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9809db3577 util: add linkat to syscall sandbox (AllowFileSystem) (fanquake)

Pull request description:

  Should fix #24536.

ACKs for top commit:
  MarcoFalke:
    cr ACK 9809db3577
  Rspigler:
    Tested ACK (commit 9809db3577) - this fixes https://github.com/bitcoin/bitcoin/issues/24536

Tree-SHA512: 2642f7dfa806e166fb32639a29b509b2edc8b919516c1f12430fc96f9887952395e157d71ef99fbaef8f7bcce1920530c24ecbce605b8a374b05d586f1f22a24
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MarcoFalke 2022-03-28 09:04:35 +02:00
commit dc0ba8ce9f
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src/util/syscall_sandbox.cpp
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@ -592,6 +592,7 @@ public:
allowed_syscalls.insert(__NR_getcwd); // get current working directory
allowed_syscalls.insert(__NR_getdents); // get directory entries
allowed_syscalls.insert(__NR_getdents64); // get directory entries
allowed_syscalls.insert(__NR_linkat); // create relative to a directory file descriptor
allowed_syscalls.insert(__NR_lstat); // get file status
allowed_syscalls.insert(__NR_mkdir); // create a directory
allowed_syscalls.insert(__NR_newfstatat); // get file status