mei_cl_vtag_by_fp(9)

💅 mei_cl_vtag_by_fp(9) — the kernel API manual, but make it make sense

okay bestie, so this is a page straight out of the Kernel API Manual and it's literally about grabbing a vtag by file pointer. that's the whole vibe. it's giving "small function, big responsibility" 🎀

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✨ NAME ✨

mei_cl_vtag_by_fp — obtain the vtag by file pointer 🫶

like, you hand it a file pointer and it hands you back the vtag. no cap.

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🌸 SYNOPSIS 🌸

u8 mei_cl_vtag_by_fp (const struct mei_cl *cl , const struct file *fp );

that's it. two args, returns a u8. clean, minimal, iconic. 👑

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🦋 ARGUMENTS 🦋

• cl — the host client 💖 that's your const struct mei_cl *, the lil connection entity you're working with.
• fp — pointer to file structure 🌈 literally a const struct file *, the file you're snooping the vtag out of.

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⭐ RETURN ⭐

vtag value on success ✨ otherwise 0 😭

so like... 0 is the "nope, nothing, no vtag for you" answer. don't @ me, that's just what the page says. if you get a zero back you did not slay, you got the miss. 💀

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🧚 SEE ALSO 🧚

okay this is the part where the manpage goes full main-character and name-drops the entire friend group. all of these, no skips, periodt:

the kernel file 👑 ./drivers/misc/mei/main.c and inside it mei_open(9), plus:

• mei_cl_vtag_remove_by_fp(9)
• mei_release(9)
• mei_read(9)
• mei_write(9)
• mei_ioctl_connect_client(9)
• mei_vt_support_check(9)
• mei_ioctl_connect_vtag(9)
• mei_ioctl_client_notify_request(9)
• mei_ioctl_client_notify_get(9)
• mei_ioctl(9)
• mei_poll(9)
• mei_cl_is_write_queued(9)
• mei_fsync(9)
• mei_fasync(9)
• trc_show(9)
• fw_status_show(9)
• hbm_ver_show(9)
• hbm_ver_drv_show(9)
• fw_ver_show(9)
• dev_state_show(9)
• mei_set_devstate(9)
• kind_show(9)
• mei_minor_get(9)
• mei_minor_free(9)

that's the whole group chat right there, iykyk 💅

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and that's the page, bestie!! 🍓 tysm for reading, this one lives in ./drivers/misc/mei, dated October 2026, and it's filed under mei_cl_vtag_by_fp(9) — go forth and get those vtags 🧚‍♀️💜