vbg_set_host_capabilities(9)

✨ vbg_set_host_capabilities(9) ✨

okay so bestie, this is a page straight out of the Kernel API Manual (yes, the kernel has a manual, she's iconic like that) and it's all about vbg_set_host_capabilities — literally just setting guest capabilities on the host. that's the whole vibe. 💅

---

🌸 NAME 🌸

vbg_set_host_capabilities — set guest capabilities on the host. no cap, that's it, that's the gig 🫶

---

🦋 SYNOPSIS 🦋

int vbg_set_host_capabilities (struct vbg_dev *gdev , struct vbg_session
*session , bool session_termination );

like, copy it exactly please, the spacing is giving whatever it's giving 😭

---

🎀 ARGUMENTS 🎀

• gdev — the Guest extension device. she's the main character here 👑
• session — the session. that's her. that's the one 🌸
• session_termination — set this if we're being called by the session cleanup code. like, are we doing the goodbye shift or not? 💀

---

🔥 DESCRIPTION 🔥

Must be called with gdev->session_mutex hold.

bestie. i need you to hear me. gdev->session_mutex must be held. this is not a suggestion, this is not a vibe, this is a requirement. do not come in here without it fr fr 🙈

---

⭐ RETURN ⭐

0 or a negative errno value. that's the whole range — zero for "slay", negative for "oop" ✨

---

💜 SEE ALSO 💜

Kernel file ./drivers/virt/vboxguest/vboxguest_core.c — the source, the lore, the origin story 🧚

and the whole friend group, all of them, no one left out:

• vbg_guest_mappings_init(9)
• vbg_guest_mappings_exit(9)
• vbg_report_guest_info(9)
• vbg_report_driver_status(9)
• vbg_balloon_inflate(9)
• vbg_balloon_deflate(9)
• vbg_heartbeat_host_config(9)
• vbg_heartbeat_init(9)
• vbg_heartbeat_exit(9)
• vbg_track_bit_usage(9)
• vbg_reset_host_event_filter(9)
• vbg_set_session_event_filter(9)
• vbg_reset_host_capabilities(9)
• vbg_acquire_session_capabilities(9)
• vbg_set_session_capabilities(9)
• vbg_query_host_version(9)
• vbg_core_init(9)
• vbg_core_exit(9)
• vbg_core_open_session(9)
• vbg_core_close_session(9)
• vbg_req_allowed(9)
• vbg_core_ioctl(9)
• vbg_core_set_mouse_status(9)

like, read them all, they're all connected, iykyk 🦋

---

💖 that's the page bestie 💖 this little cutie lives at ./drivers/virt/vboxguest, dated October 2026, and she answers to the name vbg_set_host_capabilities(9). go forth and hold that mutex. mwah 🫶🎀