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add signal.pidfd_send_signal #82893

benjaminp opened this issue Nov 6, 2019 · 5 comments

add signal.pidfd_send_signal #82893

benjaminp opened this issue Nov 6, 2019 · 5 comments
3.9 only security fixes stdlib Python modules in the Lib dir


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BPO 38712
Nosy @benjaminp, @njsmith
  • closes bpo-38712: Add signal.pidfd_send_signal. #17070
  • Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.

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    GitHub fields:

    assignee = None
    closed_at = <Date 2019-11-20.04:39:20.824>
    created_at = <Date 2019-11-06.05:08:46.932>
    labels = ['library', '3.9']
    title = 'add signal.pidfd_send_signal'
    updated_at = <Date 2019-11-20.04:39:20.822>
    user = '' fields:

    activity = <Date 2019-11-20.04:39:20.822>
    actor = 'benjamin.peterson'
    assignee = 'none'
    closed = True
    closed_date = <Date 2019-11-20.04:39:20.824>
    closer = 'benjamin.peterson'
    components = ['Library (Lib)']
    creation = <Date 2019-11-06.05:08:46.932>
    creator = 'benjamin.peterson'
    dependencies = []
    files = []
    hgrepos = []
    issue_num = 38712
    keywords = ['patch']
    message_count = 4.0
    messages = ['356091', '356093', '356101', '357028']
    nosy_count = 2.0
    nosy_names = ['benjamin.peterson', 'njs']
    pr_nums = ['17070']
    priority = 'normal'
    resolution = 'fixed'
    stage = 'resolved'
    status = 'closed'
    superseder = None
    type = None
    url = ''
    versions = ['Python 3.9']

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    Contributor Author

    Add signal.pidfd_send_signal, which will wrap the Linux 5.1 syscall of the same name.

    @benjaminp benjaminp added 3.9 only security fixes stdlib Python modules in the Lib dir labels Nov 6, 2019
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    njsmith commented Nov 6, 2019

    I guess a bikeshed question is whether it should be os.pidfd_send_signal (like os.kill) or signal.pidfd_send_signal (like signal.pthread_kill).

    I don't actually care either way myself :-)

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    Contributor Author

    Yes, I thought about that a bit. I choose signal because:

    1. signal already has some specialized functions that send signals pthread_kill and raise_signal.
    2. If we every do want to implement the third parameter of pidfd_send_signal, the signal module already defines a siginfo structseq.
    3. (least convincing) os/posix has way too much stuff. I generally think that we should strive to find a good home for new OS-level functionality that isn't the os module.

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    Contributor Author

    New changeset 7483451 by Benjamin Peterson in branch 'master':
    closes bpo-38712: Add signal.pidfd_send_signal. (GH-17070)

    @ezio-melotti ezio-melotti transferred this issue from another repository Apr 10, 2022
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    How I do signalisation on W10?

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