From: sudipm.mukherjee@gmail.com (Sudip Mukherjee)
To: kernelnewbies@lists.kernelnewbies.org
Subject: what happens to "open" if the slot is left empty in file_operations.
Date: Sat, 14 Nov 2015 13:46:14 +0530 [thread overview]
Message-ID: <CADVatmMKWmbPx9kH__pW6YTDFvktvzv8KDQDajXD7srSnqApVA@mail.gmail.com> (raw)
In-Reply-To: <CAJQX3DxuuqqW1KFUBrvi3EC_eNU127BH-6_9S+CneXWCLy4LKw@mail.gmail.com>
On Sat, Nov 14, 2015 at 12:40 PM, Shiyao Ma <i@introo.me> wrote:
> Hi,
>
>
> When writing a char device driver, if the "open" slots is left vacant in
> the file_operations structure, what will happen if "open" is called ?
>
You can have a loot at chrdev_open() function in fs/char_dev.c file.
regards
sudip
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Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-14 7:10 what happens to "open" if the slot is left empty in file_operations Shiyao Ma
2015-11-14 8:16 ` Sudip Mukherjee [this message]
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