Implement open file descriptor locks in fcntl #1195
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I've added the CHANGELOG entry. I'll try to come up with a test. Does the CI run on Linux? I see only FreeBSD mentioned, and |
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CI runs on quite a few platforms. Cirrus does FreeBSD, and Travis does Linux, OSX, NetBSD (build only), and Android (build only) |
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So, I've added The failing tests in some architectures are caused by fcntl returning Do you think it would be fine for now to simply not run this test for aarch64, arm, armv7, i686, mips64, mips64el and powerpc64? |
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Travis now only fails for i686. I don't know why that test is running despite the |
test/test_fcntl.rs
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| #[cfg(not(any(target_arch = "aarch64", | ||
| target_arch = "arm", | ||
| target_arch = "armv7", | ||
| target_arch = "i686", |
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Try "x86" instead of "i686". Also, please explain in a comment why the test is disabled on certain architectures.
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I've added a comment and switched to x86.
test/test_fcntl.rs
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| tmp.path().file_name().unwrap(), | ||
| OFlag::O_RDONLY, | ||
| Mode::empty()).unwrap(); | ||
| let dirfd = open(tmp.path().parent().unwrap(), OFlag::empty(), Mode::empty()).unwrap(); |
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It looks like you made some formatting changes unrelated to this PR. Could you please back those out?
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Sorry, forgot to disable rustfmt while editing. It's fixed.
test/test_fcntl.rs
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| // This test is disabled for the target architectures below | ||
| // due to OFD locks not being available in the kernel/libc | ||
| // versions used in the CI environment. |
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It's probably related to the fact that CI for these platforms runs under QEMU.
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I've amended the comment.
test/test_fcntl.rs
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| fcntl(fd, FcntlArg::F_OFD_SETLKW(&flock)).expect("write unlock failed"); | ||
| assert_eq!(None, lock_info(inode)); | ||
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| flock.l_type = libc::F_RDLCK as libc::c_short; |
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It looks like this test is doing two separate things: setting and clearing a write lock, and setting and clearing a read lock. Please split it up into two separate tests. That will make it easier to debug.
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Hello
This PR updates libc to 0.2.68, which adds the
F_OFD_*fcntl commands, and uses them innix::fcntl::fcntl.