Re: [PATCH 4/7] build: add infrastructure for using close_range()/closefrom()

Subject: Re: [PATCH 4/7] build: add infrastructure for using close_range()/closefrom()

Date: Sun, 25 Jan 2026 09:27:46 +0900

To: Anton Khirnov, notmuch@notmuchmail.org

Cc:

From: David Bremner

Anton Khirnov <anton@khirnov.net> writes:

> +void
> +closefrom (int lowfd)
> +{
> +    for (int i = lowfd; i < 1024; i++)
> +	close (i);
> +}

Maybe I'm revealing my ignorance, but I feel like the magic number 1024
deserves an explanation?

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• Anton Khirnov—[PATCH 0/7] indexing attachment contents [inbox, unread]
  • Anton Khirnov—[PATCH 1/7] bindings/python-cffi: do not use an unbound variable [inbox, notmuch::patch, notmuch::pushed, unread]
    • David Bremner—Re: [PATCH 1/7] bindings/python-cffi: do not use an unbound variable [inbox, unread]
  • Anton Khirnov—[PATCH 2/7] Add API for filtering attachments with an external program. [inbox, notmuch::needs-review, notmuch::patch, unread]
  • Anton Khirnov—[PATCH 3/7] indexopts: avoid a memleak in the error path [inbox, notmuch::needs-review, notmuch::patch, unread]
    • David Bremner—Re: [PATCH 3/7] indexopts: avoid a memleak in the error path [inbox, unread]
  • Anton Khirnov—[PATCH 4/7] build: add infrastructure for using close_range()/closefrom() [inbox, notmuch::needs-review, notmuch::patch, unread]
    • David Bremner—Re: [PATCH 4/7] build: add infrastructure for using close_range()/closefrom() [inbox, unread]
      • Anton Khirnov—Re: [PATCH 4/7] build: add infrastructure for using close_range()/closefrom() [inbox, unread]
  • Anton Khirnov—[PATCH 5/7] index: implement filtering attachments with an external program [inbox, notmuch::needs-review, notmuch::patch, unread]
  • Anton Khirnov—[PATCH 6/7] contrib/filter: add a Firejail profile to sandbox filtering programs [inbox, notmuch::needs-review, notmuch::patch, unread]
  • Anton Khirnov—[PATCH 7/7] contrib/filter: add an attachment filtering program [inbox, notmuch::needs-review, notmuch::patch, unread]
  • Olly Betts—Re: [PATCH 0/7] indexing attachment contents [inbox, unread]
    • Anton Khirnov—Re: [PATCH 0/7] indexing attachment contents [inbox, unread]
      • Olly Betts—Re: [PATCH 0/7] indexing attachment contents [inbox, unread]
  • Anton Khirnov—Re: [PATCH 0/7] indexing attachment contents [inbox, unread]
  • David Bremner—Re: [PATCH 0/7] indexing attachment contents [inbox, unread]
    • Anton Khirnov—Re: [PATCH 0/7] indexing attachment contents [inbox, unread]
      • David Bremner—Re: [PATCH 0/7] indexing attachment contents [inbox, unread]
        • Anton Khirnov—Re: [PATCH 0/7] indexing attachment contents [inbox, unread]