ima_file_mmap(9)

💖 ima_file_mmap(9) 💖

okay so bestie, this page is from the Kernel API Manual and it's all about ima_file_mmap. no cap, it's short but important 👑

🌸 NAME 🌸

ima_file_mmap — based on policy, collect/store measurement.

✨ SYNOPSIS ✨

int ima_file_mmap (struct file *file , unsigned long reqprot , unsigned long prot , unsigned long flags );

🎀 ARGUMENTS 🎀

• file — pointer to the file to be measured (May be NULL) 👀
• reqprot — protection requested by the application
• prot — protection that will be applied by the kernel
• flags — operational flags

💜 DESCRIPTION 💜

okay so the vibe here is: measure files being mmapped executable based on the ima_must_measure policy decision. that's the whole job, and it's giving kernel-security main character energy 🔥

On success return 0. On integrity appraisal error, assuming the file is in policy and IMA-appraisal is in enforcing mode, return -EACCES. so yeah, that's the error case bestie 😭

🌈 SEE ALSO 🌈

Kernel file: ./security/integrity/ima/ima_main.c

• ima_file_free(9)
• ima_file_mprotect(9)
• ima_bprm_check(9)
• ima_creds_check(9)
• ima_bprm_creds_for_exec(9)
• ima_file_check(9)
• ima_file_hash(9)
• ima_inode_hash(9)
• ima_post_create_tmpfile(9)
• ima_post_path_mknod(9)
• ima_read_file(9)
• ima_post_read_file(9)
• ima_load_data(9)
• ima_post_load_data(9)
• process_buffer_measurement(9)
• ima_kexec_cmdline(9)
• ima_measure_critical_data(9)
• ima_measure_raw_policy(9)
• ima_kernel_module_request(9)

that's the whole page, bestie 🫶 the footer's source is ./security/integrity/ima and the date is October 2026 — slay and bye 💅