drivers/cdrom/cdrom.c

File Facts

System

Linux kernel

Corpus path

drivers/cdrom/cdrom.c

Extension

.c

Size

101069 bytes

Lines

3731

Domain

Driver Families

Bucket

drivers/cdrom

Inferred role

Driver Families: exported/initcall integration point

Status

integration implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

• Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• Touches user memory; correctness depends on fault-safe copying and privilege boundary handling.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/atomic.h
• linux/module.h
• linux/fs.h
• linux/major.h
• linux/types.h
• linux/errno.h
• linux/kernel.h
• linux/mm.h
• linux/nospec.h
• linux/slab.h
• linux/cdrom.h
• linux/sysctl.h
• linux/proc_fs.h
• linux/blkpg.h
• linux/init.h
• linux/fcntl.h
• linux/blkdev.h
• linux/times.h
• linux/uaccess.h
• scsi/scsi_common.h

Detected Declarations

• struct compat_cdrom_read_audio
• enum cdrom_print_option
• function signal_media_change
• function cdrom_dummy_generic_packet
• function cdrom_flush_cache
• function cdrom_get_disc_info
• function cdrom_mrw_probe_pc
• function cdrom_is_mrw
• function cdrom_mrw_bgformat
• function cdrom_mrw_bgformat_susp
• function cdrom_mrw_exit
• function cdrom_mrw_set_lba_space
• function register_cdrom
• function unregister_cdrom
• function cdrom_get_media_event
• function cdrom_get_random_writable
• function cdrom_has_defect_mgt
• function cdrom_is_random_writable
• function page
• function cdrom_media_erasable
• function cdrom_dvdram_open_write
• function cdrom_mrw_open_write
• function mo_open_write
• function cdrom_ram_open_write
• function cdrom_mmc3_profile
• function cdrom_is_dvd_rw
• function cdrom_open_write
• function cdrom_dvd_rw_close_write
• function cdrom_count_tracks
• function open_for_data
• function cdrom_open
• function check_for_audio_disc
• function cdrom_release
• function cdrom_read_mech_status
• function cdrom_slot_status
• function cdrom_number_of_slots
• function cdrom_load_unload
• function cdrom_select_disc
• function cdrom_update_events
• function cdrom_check_events
• function media_changed
• function sanitize_format
• function init_cdrom_command
• function setup_report_key
• function setup_send_key
• function dvd_do_auth
• function dvd_read_physical
• function dvd_read_copyright

Annotated Snippet

module_init(cdrom_init);
module_exit(cdrom_exit);
MODULE_DESCRIPTION("Uniform CD-ROM driver");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/atomic.h`, `linux/module.h`, `linux/fs.h`, `linux/major.h`, `linux/types.h`, `linux/errno.h`, `linux/kernel.h`, `linux/mm.h`.
• Detected declarations: `struct compat_cdrom_read_audio`, `enum cdrom_print_option`, `function signal_media_change`, `function cdrom_dummy_generic_packet`, `function cdrom_flush_cache`, `function cdrom_get_disc_info`, `function cdrom_mrw_probe_pc`, `function cdrom_is_mrw`, `function cdrom_mrw_bgformat`, `function cdrom_mrw_bgformat_susp`.
• Atlas domain: Driver Families / drivers/cdrom.
• Implementation status: integration implementation candidate.
• This snippet crosses the user/kernel memory boundary; validate fault handling and access checks before translating the pattern.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.