v4l2_fh_open(9)

💅 v4l2_fh_open(9) 💅

okay so bestie, this is the v4l2_fh_open page straight out of the Kernel API Manual, and it's lowkey iconic. 💖

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✨ NAME ✨

v4l2_fh_open — Ancillary routine that can be used as the open op of v4l2_file_operations.

periodt. that's the whole vibe. 💅

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🎀 SYNOPSIS 🎀

the signature is giving one-liner main character energy:

int v4l2_fh_open (struct file *filp );

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🫶 ARGUMENTS 🫶

• filp — pointer to struct file.

no cap, that's the whole argument list. 🫶

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💖 DESCRIPTION 💖

so what does it do, bestie? It allocates a v4l2_fh and inits and adds it to the struct video_device associated with the file pointer. slay. ✨

now for the important part — error vibe check: on error, filp->private_data will be NULL; otherwise it will point to the struct v4l2_fh. literally that simple. 💖

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🌈 SEE ALSO 🌈

go read these next, iykyk:

• Kernel file ./include/media/v4l2-fh.h
• struct v4l2_fh(9)
• file_to_v4l2_fh(9)
• v4l2_fh_init(9)
• v4l2_fh_add(9)
• v4l2_fh_del(9)
• v4l2_fh_exit(9)
• v4l2_fh_release(9)
• v4l2_fh_is_singular(9)
• v4l2_fh_is_singular_file(9)

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mwah 💋 — source/version: ./include/media · date: October 2026 · page: v4l2_fh_open(9). byeee 🫶✨