iommufd_ctx_from_fd(9)

💖 NAME 💖

okay so bestie, this is the iommufd_ctx_from_fd(9) page from the Kernel API Manual, and it's all about grabbing a reference to the iommufd context. yes, that's the whole assignment. 🫶

✨ SYNOPSIS ✨

struct iommufd_ctx * iommufd_ctx_from_fd (int fd );

🎀 ARGUMENTS 🎀

• fd — the file descriptor you're obtaining the reference from. that's the input, bestie 💅

🌸 DESCRIPTION 🌸

If it works out, you get a pointer to the iommufd_ctx; if it doesn't, you get ERR_PTR instead. On success, the caller is responsible for calling iommufd_ctx_put — like, that's literally your cleanup era, do not skip it. 😭

👑 SEE ALSO 👑

• Kernel file ./drivers/iommu/iommufd/main.c
• iommufd_ctx_get(9)
• iommufd_ctx_from_file(9)
• iommufd_ctx_put(9)

mwah 💋 source/version check: ./drivers/iommu/iommufd, dated October 2026, manual iommufd_ctx_from_fd(9). slay and hydrate. 💖