index : litmus-rt.git	archive/unc-master-3.0 archived-2013.1 archived-private-master archived-semi-part demo ecrts-pgm-final ecrts14-pgm-final gpusync-rtss12 gpusync/staging linux-tip litmus2008-patch-series master pgm prop/litmus-signals prop/robust-tie-break staging test tracing-devel v2.6.34-with-arm-patches v2015.1 wip-2011.2-bbb wip-2011.2-bbb-trace wip-2012.3-gpu wip-2012.3-gpu-preport wip-2012.3-gpu-rtss13 wip-2012.3-gpu-sobliv-budget-w-kshark wip-aedzl-final wip-aedzl-revised wip-arbit-deadline wip-aux-tasks wip-bbb wip-bbb-prio-don wip-better-break wip-binary-heap wip-budget wip-color wip-color-jlh wip-d10-hz1000 wip-default-clustering wip-dissipation-jerickso wip-dissipation2-jerickso wip-ecrts14-pgm wip-edf-hsb wip-edf-os wip-edf-tie-break wip-edzl-critique wip-edzl-final wip-edzl-revised wip-events wip-extra-debug wip-fix-switch-jerickso wip-fix3 wip-fmlp-dequeue wip-ft-irq-flag wip-gpu-cleanup wip-gpu-interrupts wip-gpu-rtas12 wip-gpu-rtss12 wip-gpu-rtss12-srp wip-gpusync-merge wip-ikglp wip-k-fmlp wip-kernel-coloring wip-kernthreads wip-klmirqd-to-aux wip-kshark wip-litmus-3.2 wip-litmus2011.2 wip-litmus3.0-2011.2 wip-master-2.6.33-rt wip-mc wip-mc-bipasa wip-mc-jerickso wip-mc2-cache-slack wip-mcrit-mac wip-merge-3.0 wip-merge-v3.0 wip-migration-affinity wip-mmap-uncache wip-modechange wip-nested-locking wip-omlp-gedf wip-pai wip-percore-lib wip-performance wip-pgm wip-pgm-split wip-pm-ovd wip-prio-inh wip-prioq-dgl wip-refactored-gedf wip-release-master-fix wip-robust-tie-break wip-rt-kshark wip-rtas12-pgm wip-semi-part wip-semi-part-edfos-jerickso wip-shared-lib wip-shared-lib2 wip-shared-mem wip-splitting-jerickso wip-splitting-omlp-jerickso wip-stage-binheap wip-sun-port wip-timer-trace wip-tracepoints
	The LITMUS^RT kernel.	Bjoern Brandenburg

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Branch	Commit message	Author	Age
archive/unc-master-3.0	P-FP: fix BUG_ON releated to priority inheritance	Bjoern Brandenburg	13 years
archived-2013.1	uncachedev: mmap memory that is not cached by CPUs	Glenn Elliott	12 years
archived-private-master	Merge branch 'wip-2.6.34' into old-private-master	Andrea Bastoni	15 years
archived-semi-part	Merge branch 'wip-semi-part' of ssh://cvs/cvs/proj/litmus/repo/litmus2010 int...	Andrea Bastoni	15 years
demo	Further refinements	Jonathan Herman	14 years
ecrts-pgm-final	Merge branch 'wip-ecrts14-pgm' of ssh://rtsrv.cs.unc.edu/home/litmus/litmus-r...	Glenn Elliott	12 years
ecrts14-pgm-final	Merge branch 'wip-ecrts14-pgm' of ssh://rtsrv.cs.unc.edu/home/litmus/litmus-r...	Glenn Elliott	12 years
gpusync-rtss12	Final GPUSync implementation.	Glenn Elliott	12 years
gpusync/staging	Rename IKGLP R2DGLP.	Glenn Elliott	12 years
linux-tip	Merge branch 'slab/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/p...	Linus Torvalds	15 years
litmus2008-patch-series	add i386 feather-trace implementation	Bjoern B. Brandenburg	16 years
master	PSN-EDF: use inferred_sporadic_job_release_at	Bjoern Brandenburg	9 years
pgm	make it compile	Glenn Elliott	12 years
prop/litmus-signals	Infrastructure for Litmus signals.	Glenn Elliott	13 years
prop/robust-tie-break	Fixed bug in edf_higher_prio().	Glenn Elliott	13 years
staging	Fix tracepoint compilation error	Felipe Cerqueira	13 years
test	9/23/2016	Namhoon Kim	9 years
tracing-devel	Test kernel tracing events capabilities	Andrea Bastoni	16 years
v2.6.34-with-arm-patches	smsc911x: Add spinlocks around registers access	Catalin Marinas	15 years
v2015.1	Add ARM syscall def for get_current_budget	Bjoern Brandenburg	10 years
wip-2011.2-bbb	Litmus core: simplify np-section protocol	Bjoern B. Brandenburg	14 years
wip-2011.2-bbb-trace	Refactor sched_trace_log_message() -> debug_trace_log_message()	Andrea Bastoni	14 years
wip-2012.3-gpu	SOBLIV draining support for C-EDF.	Glenn Elliott	12 years
wip-2012.3-gpu-preport	pick up last C-RM file	Glenn Elliott	12 years
wip-2012.3-gpu-rtss13	Fix critical bug in GPU tracker.	Glenn Elliott	12 years
wip-2012.3-gpu-sobliv-budget-w-kshark	Proper sobliv draining and many bug fixes.	Glenn Elliott	12 years
wip-aedzl-final	Make it easier to compile AEDZL interfaces in liblitmus.	Glenn Elliott	15 years
wip-aedzl-revised	Add sched_trace data for Apative EDZL	Glenn Elliott	15 years
wip-arbit-deadline	Fix compilation bug.	Glenn Elliott	13 years
wip-aux-tasks	Description of refined aux task inheritance.	Glenn Elliott	13 years
wip-bbb	GSN-EDF & Core: improve debug TRACE'ing for NP sections	Bjoern B. Brandenburg	14 years
wip-bbb-prio-don	use correct timestamp	Bjoern B. Brandenburg	14 years
wip-better-break	Implement hash-based EDF tie-breaking.	Glenn Elliott	13 years
wip-binary-heap	Make C-EDF work with simplified binheap_delete	Glenn Elliott	13 years
wip-budget	Added support for choices in budget policy enforcement.	Glenn Elliott	15 years
wip-color	Summarize schedulability with final record	Jonathan Herman	13 years
wip-color-jlh	sched_color: Fixed two bugs causing crashing on experiment restart and a rare...	Jonathan Herman	13 years
wip-d10-hz1000	Enable HZ=1000 on District 10	Bjoern B. Brandenburg	15 years
wip-default-clustering	Feature: Make default C-EDF clustering compile-time configurable.	Glenn Elliott	15 years
wip-dissipation-jerickso	Update from 2.6.36 to 2.6.36.4	Jeremy Erickson	11 years
wip-dissipation2-jerickso	Update 2.6.36 to 2.6.36.4	Jeremy Erickson	11 years
wip-ecrts14-pgm	Merge branch 'wip-ecrts14-pgm' of ssh://rtsrv.cs.unc.edu/home/litmus/litmus-r...	Glenn Elliott	12 years
wip-edf-hsb	last tested version	Jonathan Herman	14 years
wip-edf-os	Lookup table EDF-os	Jeremy Erickson	12 years
wip-edf-tie-break	Merge branch 'wip-edf-tie-break' of ssh://rtsrv.cs.unc.edu/home/litmus/litmus...	Glenn Elliott	13 years
wip-edzl-critique	Use hr_timer's active checks instead of having own flag.	Glenn Elliott	15 years
wip-edzl-final	Implementation of the EDZL scheduler.	Glenn Elliott	15 years
wip-edzl-revised	Clean up comments.	Glenn Elliott	15 years
wip-events	Added support for tracing arbitrary actions.	Jonathan Herman	15 years
wip-extra-debug	DBG: add additional tracing	Bjoern B. Brandenburg	15 years
wip-fix-switch-jerickso	Attempt to fix race condition with plugin switching	Jeremy Erickson	15 years
wip-fix3	sched: show length of runqueue clock deactivation in /proc/sched_debug	Bjoern B. Brandenburg	15 years
wip-fmlp-dequeue	Improve FMLP queue management.	Glenn Elliott	14 years
wip-ft-irq-flag	Feather-Trace: keep track of interrupt-related interference.	Bjoern B. Brandenburg	14 years
wip-gpu-cleanup	Enable sched_trace log injection from userspace	Glenn Elliott	13 years
wip-gpu-interrupts	Remove option for threading of all softirqs.	Glenn Elliott	14 years
wip-gpu-rtas12	Generalized GPU cost predictors + EWMA. (untested)	Glenn Elliott	13 years
wip-gpu-rtss12	Final GPUSync implementation.	Glenn Elliott	13 years
wip-gpu-rtss12-srp	experimental changes to support GPUs under SRP	Glenn Elliott	13 years
wip-gpusync-merge	Cleanup priority tracking for budget enforcement.	Glenn Elliott	12 years
wip-ikglp	Move RSM and IKGLP imp. to own .c files	Glenn Elliott	13 years
wip-k-fmlp	Merge branch 'mpi-master' into wip-k-fmlp	Glenn Elliott	14 years
wip-kernel-coloring	Added recolor syscall	Namhoon Kim	8 years
wip-kernthreads	Kludge work-queue processing into klitirqd.	Glenn Elliott	15 years
wip-klmirqd-to-aux	Allow klmirqd threads to be given names.	Glenn Elliott	13 years
wip-kshark	Merge branch 'mpi-staging' into wip-kshark	Jonathan Herman	13 years
wip-litmus-3.2	Merge commit 'v3.2' into litmus-staging	Andrea Bastoni	13 years
wip-litmus2011.2	Cleanup: Coding conformance for affinity stuff.	Glenn Elliott	14 years
wip-litmus3.0-2011.2	Feather-Trace: keep track of interrupt-related interference.	Bjoern B. Brandenburg	14 years
wip-master-2.6.33-rt	Avoid deadlock when switching task policy to BACKGROUND (ugly)	Andrea Bastoni	15 years
wip-mc	Removed ARM-specific hacks which disabled less common mixed-criticality featu...	Jonathan Herman	12 years
wip-mc-bipasa	MC-EDF added	bipasa chattopadhyay	13 years
wip-mc-jerickso	Split C/D queues	Jeremy Erickson	15 years
wip-mc2-cache-slack	Manually patched mc^2 related code	Ming Yang	10 years
wip-mcrit-mac	cosmetic	Mac Mollison	15 years
wip-merge-3.0	Prevent Linux to send IPI and queue tasks on remote CPUs.	Andrea Bastoni	14 years
wip-merge-v3.0	Prevent Linux to send IPI and queue tasks on remote CPUs.	Andrea Bastoni	14 years
wip-migration-affinity	NULL affinity dereference in C-EDF.	Glenn Elliott	14 years
wip-mmap-uncache	share branch with others	Glenn Elliott	13 years
wip-modechange	RTSS 2017 submission	Namhoon Kim	8 years
wip-nested-locking	Appears to be working.	Bryan Ward	12 years
wip-omlp-gedf	First implementation of G-OMLP.	Glenn Elliott	15 years
wip-pai	Some cleanup of PAI	Glenn Elliott	14 years
wip-percore-lib	9/21/2016	Namhoon Kim	9 years
wip-performance	CONFIG_DONT_PREEMPT_ON_TIE: Don't preeempt a scheduled task on priority tie.	Glenn Elliott	14 years
wip-pgm	Add PGM support to C-FL	Glenn Elliott	12 years
wip-pgm-split	First draft of C-FL-split	Namhoon Kim	12 years
wip-pm-ovd	Add preemption-and-migration overhead tracing support	Andrea Bastoni	15 years
wip-prio-inh	P-EDF updated to use the generic pi framework.	Glenn Elliott	15 years
wip-prioq-dgl	BUG FIX: Support DGLs with PRIOQ_MUTEX	Glenn Elliott	13 years
wip-refactored-gedf	Generalizd architecture for GEDF-style scheduelrs to reduce code redundancy.	Glenn Elliott	15 years
wip-release-master-fix	bugfix: release master CPU must signal task was picked	Bjoern B. Brandenburg	14 years
wip-robust-tie-break	EDF priority tie-breaks.	Glenn Elliott	13 years
wip-rt-kshark	Move task time accounting into the complete_job method.	Jonathan Herman	13 years
wip-rtas12-pgm	Scheduling of PGM jobs.	Glenn Elliott	13 years
wip-semi-part	Fix compile error with newer GCC	Jeremy Erickson	12 years
wip-semi-part-edfos-jerickso	Use initial CPU set by client	Jeremy Erickson	12 years
wip-shared-lib	TODO: Fix condition checks in replicate_page_move_mapping()	Namhoon Kim	9 years
wip-shared-lib2	RTAS 2017 Submission ver.	Namhoon Kim	9 years
wip-shared-mem	Initial commit for shared library	Namhoon Kim	9 years
wip-splitting-jerickso	Fix release behavior	Jeremy Erickson	13 years
wip-splitting-omlp-jerickso	Bjoern's Dissertation Code with Priority Donation	Jeremy Erickson	13 years
wip-stage-binheap	An efficient binary heap implementation.	Glenn Elliott	13 years
wip-sun-port	Dynamic memory allocation and clean exit for FeatherTrace	Christopher Kenna	15 years
wip-timer-trace	bugfix: C-EDF, clear scheduled field of the correct CPU upon task_exit	Andrea Bastoni	15 years
wip-tracepoints	Add kernel-style events for sched_trace_XXX() functions	Andrea Bastoni	14 years
Tag	Download	Author	Age
2015.1	commit 8e51b37822...	Bjoern Brandenburg	10 years
2013.1	commit bcaacec1ca...	Glenn Elliott	12 years
2012.3	commit c158b5fbe4...	Jonathan Herman	13 years
2012.2	commit b53c479a0f...	Glenn Elliott	13 years
2012.1	commit 83b11ea1c6...	Bjoern B. Brandenburg	14 years
rtas12-mc-beta-exp	commit 8e236ee20f...	Christopher Kenna	14 years
2011.1	commit d11808b5c6...	Christopher Kenna	15 years
v2.6.37-rc4	commit e8a7e48bb2...	Linus Torvalds	15 years
v2.6.37-rc3	commit 3561d43fd2...	Linus Torvalds	15 years
v2.6.37-rc2	commit e53beacd23...	Linus Torvalds	15 years
v2.6.37-rc1	commit c8ddb2713c...	Linus Torvalds	15 years
v2.6.36	commit f6f94e2ab1...	Linus Torvalds	15 years
2010.2	commit 5c5456402d...	Bjoern B. Brandenburg	15 years
v2.6.36-rc8	commit cd07202cc8...	Linus Torvalds	15 years
v2.6.36-rc7	commit cb655d0f3d...	Linus Torvalds	15 years
v2.6.36-rc6	commit 899611ee7d...	Linus Torvalds	15 years
v2.6.36-rc5	commit b30a3f6257...	Linus Torvalds	15 years
v2.6.36-rc4	commit 49553c2ef8...	Linus Torvalds	15 years
v2.6.36-rc3	commit 2bfc96a127...	Linus Torvalds	15 years
v2.6.36-rc2	commit 76be97c1fc...	Linus Torvalds	15 years
v2.6.36-rc1	commit da5cabf80e...	Linus Torvalds	15 years
v2.6.35	commit 9fe6206f40...	Linus Torvalds	15 years
v2.6.35-rc6	commit b37fa16e78...	Linus Torvalds	15 years
v2.6.35-rc5	commit 1c5474a65b...	Linus Torvalds	15 years
v2.6.35-rc4	commit 815c4163b6...	Linus Torvalds	15 years
v2.6.35-rc3	commit 7e27d6e778...	Linus Torvalds	15 years
v2.6.35-rc2	commit e44a21b726...	Linus Torvalds	15 years
v2.6.35-rc1	commit 67a3e12b05...	Linus Torvalds	15 years
2010.1	commit 7c1ff4c544...	Andrea Bastoni	15 years
v2.6.34	commit e40152ee1e...	Linus Torvalds	15 years
v2.6.33.4	commit 4640b4e7d9...	Greg Kroah-Hartman	15 years
v2.6.34-rc7	commit b57f95a382...	Linus Torvalds	15 years
v2.6.34-rc6	commit 66f41d4c5c...	Linus Torvalds	15 years
v2.6.33.3	commit 3e7ad8ed97...	Greg Kroah-Hartman	15 years
v2.6.34-rc5	commit 01bf0b6457...	Linus Torvalds	15 years
v2.6.34-rc4	commit 0d0fb0f9c5...	Linus Torvalds	15 years
v2.6.33.2	commit 19f00f070c...	Greg Kroah-Hartman	15 years
v2.6.34-rc3	commit 2eaa9cfdf3...	Linus Torvalds	15 years
v2.6.34-rc2	commit 220bf991b0...	Linus Torvalds	16 years
v2.6.33.1	commit dbdafe5ccf...	Greg Kroah-Hartman	16 years
v2.6.34-rc1	commit 57d54889cd...	Linus Torvalds	16 years
v2.6.33	commit 60b341b778...	Linus Torvalds	16 years
v2.6.33-rc8	commit 724e6d3fe8...	Linus Torvalds	16 years
v2.6.33-rc7	commit 29275254ca...	Linus Torvalds	16 years
v2.6.33-rc6	commit abe94c756c...	Linus Torvalds	16 years
v2.6.33-rc5	commit 92dcffb916...	Linus Torvalds	16 years
v2.6.33-rc4	commit 7284ce6c9f...	Linus Torvalds	16 years
v2.6.33-rc3	commit 74d2e4f8d7...	Linus Torvalds	16 years
v2.6.33-rc2	commit 6b7b284958...	Linus Torvalds	16 years
v2.6.33-rc1	commit 55639353a0...	Linus Torvalds	16 years
v2.6.32	commit 22763c5cf3...	Linus Torvalds	16 years
v2.6.32-rc8	commit 648f4e3e50...	Linus Torvalds	16 years
v2.6.32-rc7	commit 156171c71a...	Linus Torvalds	16 years
v2.6.32-rc6	commit b419148e56...	Linus Torvalds	16 years
v2.6.32-rc5	commit 012abeea66...	Linus Torvalds	16 years
v2.6.32-rc4	commit 161291396e...	Linus Torvalds	16 years
v2.6.32-rc3	commit 374576a8b6...	Linus Torvalds	16 years
v2.6.32-rc1	commit 17d857be64...	Linus Torvalds	16 years
v2.6.32-rc2	commit 17d857be64...	Linus Torvalds	16 years
v2.6.31	commit 74fca6a428...	Linus Torvalds	16 years
v2.6.31-rc9	commit e07cccf404...	Linus Torvalds	16 years
v2.6.31-rc8	commit 326ba5010a...	Linus Torvalds	16 years
v2.6.31-rc7	commit 422bef879e...	Linus Torvalds	16 years
v2.6.31-rc6	commit 64f1607ffb...	Linus Torvalds	16 years
v2.6.31-rc5	commit ed680c4ad4...	Linus Torvalds	16 years
v2.6.31-rc4	commit 4be3bd7849...	Linus Torvalds	16 years
v2.6.31-rc3	commit 6847e154e3...	Linus Torvalds	16 years
v2.6.31-rc2	commit 8e4a718ff3...	Linus Torvalds	16 years
v2.6.31-rc1	commit 28d0325ce6...	Linus Torvalds	16 years
v2.6.30	commit 07a2039b8e...	Linus Torvalds	16 years
v2.6.30-rc8	commit 9fa7eb283c...	Linus Torvalds	16 years
v2.6.30-rc7	commit 59a3759d0f...	Linus Torvalds	16 years
v2.6.30-rc6	commit 1406de8e11...	Linus Torvalds	16 years
v2.6.30-rc5	commit 091bf7624d...	Linus Torvalds	16 years
v2.6.30-rc4	commit 091438dd56...	Linus Torvalds	16 years
v2.6.30-rc3	commit 0910697403...	Linus Torvalds	16 years
v2.6.30-rc2	commit 0882e8dd3a...	Linus Torvalds	16 years
v2.6.30-rc1	commit 577c9c456f...	Linus Torvalds	16 years
v2.6.29	commit 8e0ee43bc2...	Linus Torvalds	16 years
v2.6.29-rc8	commit 041b62374c...	Linus Torvalds	17 years
v2.6.29-rc7	commit fec6c6fec3...	Linus Torvalds	17 years
v2.6.29-rc6	commit 20f4d6c3a2...	Linus Torvalds	17 years
v2.6.29-rc5	commit d2f8d7ee1a...	Linus Torvalds	17 years
v2.6.29-rc4	commit 8e4921515c...	Linus Torvalds	17 years
v2.6.29-rc3	commit 18e352e4a7...	Linus Torvalds	17 years
v2.6.29-rc2	commit 1de9e8e70f...	Linus Torvalds	17 years
v2.6.29-rc1	commit c59765042f...	Linus Torvalds	17 years
v2.6.28	commit 4a6908a3a0...	Linus Torvalds	17 years
v2.6.28-rc9	commit 929096fe9f...	Linus Torvalds	17 years
v2.6.28-rc8	commit 8b1fae4e42...	Linus Torvalds	17 years
v2.6.28-rc7	commit 061e41fdb5...	Linus Torvalds	17 years
v2.6.28-rc6	commit 13d428afc0...	Linus Torvalds	17 years
v2.6.28-rc5	commit 9bf1a2445f...	Linus Torvalds	17 years
v2.6.28-rc4	commit f7160c7573...	Linus Torvalds	17 years
v2.6.28-rc3	commit 45beca08dd...	Linus Torvalds	17 years
v2.6.28-rc2	commit 0173a3265b...	Linus Torvalds	17 years
v2.6.28-rc1	commit 57f8f7b60d...	Linus Torvalds	17 years
v2.6.27	commit 3fa8749e58...	Linus Torvalds	17 years
v2.6.27-rc9	commit 4330ed8ed4...	Linus Torvalds	17 years
v2.6.27-rc8	commit 94aca1dac6...	Linus Torvalds	17 years
v2.6.27-rc7	commit 72d31053f6...	Linus Torvalds	17 years
v2.6.27-rc6	commit adee14b2e1...	Linus Torvalds	17 years
v2.6.27-rc5	commit 24342c34a0...	Linus Torvalds	17 years
v2.6.27-rc4	commit 6a55617ed5...	Linus Torvalds	17 years
v2.6.27-rc3	commit 30a2f3c60a...	Linus Torvalds	17 years
v2.6.27-rc2	commit 0967d61ea0...	Linus Torvalds	17 years
v2.6.27-rc1	commit 6e86841d05...	Linus Torvalds	17 years
v2.6.26	commit bce7f793da...	Linus Torvalds	17 years
v2.6.26-rc9	commit b7279469d6...	Linus Torvalds	17 years
v2.6.26-rc8	commit 543cf4cb3f...	Linus Torvalds	17 years
v2.6.26-rc7	commit d70ac829b7...	Linus Torvalds	17 years
v2.6.26-rc6	commit 5dd34572ad...	Linus Torvalds	17 years
v2.6.26-rc5	commit 53c8ba9540...	Linus Torvalds	17 years
v2.6.26-rc4	commit e490517a03...	Linus Torvalds	17 years
v2.6.26-rc3	commit b8291ad07a...	Linus Torvalds	17 years
v2.6.26-rc2	commit 492c2e476e...	Linus Torvalds	17 years
v2.6.26-rc1	commit 2ddcca36c8...	Linus Torvalds	17 years
v2.6.25	commit 4b119e21d0...	Linus Torvalds	17 years
v2.6.25-rc9	commit 120dd64cac...	Linus Torvalds	17 years
v2.6.25-rc8	commit 0e81a8ae37...	Linus Torvalds	17 years
v2.6.25-rc7	commit 05dda977f2...	Linus Torvalds	17 years
v2.6.25-rc6	commit a978b30af3...	Linus Torvalds	18 years
v2.6.25-rc5	commit cdeeeae056...	Linus Torvalds	18 years
v2.6.25-rc4	commit 29e8c3c304...	Linus Torvalds	18 years
v2.6.25-rc3	commit bfa274e243...	Linus Torvalds	18 years
v2.6.25-rc2	commit 101142c37b...	Linus Torvalds	18 years
v2.6.25-rc1	commit 19af35546d...	Linus Torvalds	18 years
v2.6.24	commit 49914084e7...	Linus Torvalds	18 years
v2.6.24-rc8	commit cbd9c88369...	Linus Torvalds	18 years
v2.6.24-rc7	commit 3ce5445046...	Linus Torvalds	18 years
v2.6.24-rc6	commit ea67db4cdb...	Linus Torvalds	18 years
v2.6.24-rc5	commit 82d29bf6dc...	Linus Torvalds	18 years
v2.6.24-rc4	commit 09b56adc98...	Linus Torvalds	18 years
v2.6.24-rc3	commit d9f8bcbf67...	Linus Torvalds	18 years
v2.6.24-rc2	commit dbeeb816e8...	Linus Torvalds	18 years
v2.6.24-rc1	commit c9927c2bf4...	Linus Torvalds	18 years
v2.6.23	commit bbf25010f1...	Linus Torvalds	18 years
v2.6.23-rc9	commit 3146b39c18...	Linus Torvalds	18 years
v2.6.23-rc8	commit 4942de4a0e...	Linus Torvalds	18 years
v2.6.23-rc7	commit 81cfe79b9c...	Linus Torvalds	18 years
v2.6.23-rc6	commit 0d4cbb5e7f...	Linus Torvalds	18 years
v2.6.23-rc5	commit 40ffbfad6b...	Linus Torvalds	18 years
v2.6.23-rc4	commit b07d68b5ca...	Linus Torvalds	18 years
v2.6.23-rc3	commit 39d3520c92...	Linus Torvalds	18 years
v2.6.23-rc2	commit d4ac2477fa...	Linus Torvalds	18 years
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generated by cgit v1.2.2 (git 2.25.0) at 2025-09-16 06:37:18 -0400

/* linux/drivers/cdrom/cdrom.c
   Copyright (c) 1996, 1997 David A. van Leeuwen.
   Copyright (c) 1997, 1998 Erik Andersen <andersee@debian.org>
   Copyright (c) 1998, 1999 Jens Axboe <axboe@image.dk>

   May be copied or modified under the terms of the GNU General Public
   License.  See linux/COPYING for more information.

   Uniform CD-ROM driver for Linux.
   See Documentation/cdrom/cdrom-standard.tex for usage information.

   The routines in the file provide a uniform interface between the
   software that uses CD-ROMs and the various low-level drivers that
   actually talk to the hardware. Suggestions are welcome.
   Patches that work are more welcome though.  ;-)

 To Do List:
 ----------------------------------

 -- Modify sysctl/proc interface. I plan on having one directory per
 drive, with entries for outputing general drive information, and sysctl
 based tunable parameters such as whether the tray should auto-close for
 that drive. Suggestions (or patches) for this welcome!


 Revision History
 ----------------------------------
 1.00  Date Unknown -- David van Leeuwen <david@tm.tno.nl>
 -- Initial version by David A. van Leeuwen. I don't have a detailed
  changelog for the 1.x series, David?

2.00  Dec  2, 1997 -- Erik Andersen <andersee@debian.org>
  -- New maintainer! As David A. van Leeuwen has been too busy to activly
  maintain and improve this driver, I am now carrying on the torch. If
  you have a problem with this driver, please feel free to contact me.

  -- Added (rudimentary) sysctl interface. I realize this is really weak
  right now, and is _very_ badly implemented. It will be improved...

  -- Modified CDROM_DISC_STATUS so that it is now incorporated into
  the Uniform CD-ROM driver via the cdrom_count_tracks function.
  The cdrom_count_tracks function helps resolve some of the false
  assumptions of the CDROM_DISC_STATUS ioctl, and is also used to check
  for the correct media type when mounting or playing audio from a CD.

  -- Remove the calls to verify_area and only use the copy_from_user and
  copy_to_user stuff, since these calls now provide their own memory
  checking with the 2.1.x kernels.

  -- Major update to return codes so that errors from low-level drivers
  are passed on through (thanks to Gerd Knorr for pointing out this
  problem).

  -- Made it so if a function isn't implemented in a low-level driver,
  ENOSYS is now returned instead of EINVAL.

  -- Simplified some complex logic so that the source code is easier to read.

  -- Other stuff I probably forgot to mention (lots of changes).

2.01 to 2.11 Dec 1997-Jan 1998
  -- TO-DO!  Write changelogs for 2.01 to 2.12.

2.12  Jan  24, 1998 -- Erik Andersen <andersee@debian.org>
  -- Fixed a bug in the IOCTL_IN and IOCTL_OUT macros.  It turns out that
  copy_*_user does not return EFAULT on error, but instead returns the number 
  of bytes not copied.  I was returning whatever non-zero stuff came back from 
  the copy_*_user functions directly, which would result in strange errors.

2.13  July 17, 1998 -- Erik Andersen <andersee@debian.org>
  -- Fixed a bug in CDROM_SELECT_SPEED where you couldn't lower the speed
  of the drive.  Thanks to Tobias Ringstr|m <tori@prosolvia.se> for pointing
  this out and providing a simple fix.
  -- Fixed the procfs-unload-module bug with the fill_inode procfs callback.
  thanks to Andrea Arcangeli
  -- Fixed it so that the /proc entry now also shows up when cdrom is
  compiled into the kernel.  Before it only worked when loaded as a module.

  2.14 August 17, 1998 -- Erik Andersen <andersee@debian.org>
  -- Fixed a bug in cdrom_media_changed and handling of reporting that
  the media had changed for devices that _don't_ implement media_changed.  
  Thanks to Grant R. Guenther <grant@torque.net> for spotting this bug.
  -- Made a few things more pedanticly correct.

2.50 Oct 19, 1998 - Jens Axboe <axboe@image.dk>
  -- New maintainers! Erik was too busy to continue the work on the driver,
  so now Chris Zwilling <chris@cloudnet.com> and Jens Axboe <axboe@image.dk>
  will do their best to follow in his footsteps
  
  2.51 Dec 20, 1998 - Jens Axboe <axboe@image.dk>
  -- Check if drive is capable of doing what we ask before blindly changing
  cdi->options in various ioctl.
  -- Added version to proc entry.
  
  2.52 Jan 16, 1999 - Jens Axboe <axboe@image.dk>
  -- Fixed an error in open_for_data where we would sometimes not return
  the correct error value. Thanks Huba Gaspar <huba@softcell.hu>.
  -- Fixed module usage count - usage was based on /proc/sys/dev
  instead of /proc/sys/dev/cdrom. This could lead to an oops when other
  modules had entries in dev. Feb 02 - real bug was in sysctl.c where
  dev would be removed even though it was used. cdrom.c just illuminated
  that bug.
  
  2.53 Feb 22, 1999 - Jens Axboe <axboe@image.dk>
  -- Fixup of several ioctl calls, in particular CDROM_SET_OPTIONS has
  been "rewritten" because capabilities and options aren't in sync. They
  should be...
  -- Added CDROM_LOCKDOOR ioctl. Locks the door and keeps it that way.
  -- Added CDROM_RESET ioctl.
  -- Added CDROM_DEBUG ioctl. Enable debug messages on-the-fly.
  -- Added CDROM_GET_CAPABILITY ioctl. This relieves userspace programs
  from parsing /proc/sys/dev/cdrom/info.
  
  2.54 Mar 15, 1999 - Jens Axboe <axboe@image.dk>
  -- Check capability mask from low level driver when counting tracks as
  per suggestion from Corey J. Scotts <cstotts@blue.weeg.uiowa.edu>.
  
  2.55 Apr 25, 1999 - Jens Axboe <axboe@image.dk>
  -- autoclose was mistakenly checked against CDC_OPEN_TRAY instead of
  CDC_CLOSE_TRAY.
  -- proc info didn't mask against capabilities mask.
  
  3.00 Aug 5, 1999 - Jens Axboe <axboe@image.dk>
  -- Unified audio ioctl handling across CD-ROM drivers. A lot of the
  code was duplicated before. Drives that support the generic packet
  interface are now being fed packets from here instead.
  -- First attempt at adding support for MMC2 commands - for DVD and
  CD-R(W) drives. Only the DVD parts are in now - the interface used is
  the same as for the audio ioctls.
  -- ioctl cleanups. if a drive couldn't play audio, it didn't get
  a change to perform device specific ioctls as well.
  -- Defined CDROM_CAN(CDC_XXX) for checking the capabilities.
  -- Put in sysctl files for autoclose, autoeject, check_media, debug,
  and lock.
  -- /proc/sys/dev/cdrom/info has been updated to also contain info about
  CD-Rx and DVD capabilities.
  -- Now default to checking media type.
  -- CDROM_SEND_PACKET ioctl added. The infrastructure was in place for
  doing this anyway, with the generic_packet addition.
  
  3.01 Aug 6, 1999 - Jens Axboe <axboe@image.dk>
  -- Fix up the sysctl handling so that the option flags get set
  correctly.
  -- Fix up ioctl handling so the device specific ones actually get
  called :).
  
  3.02 Aug 8, 1999 - Jens Axboe <axboe@image.dk>
  -- Fixed volume control on SCSI drives (or others with longer audio
  page).
  -- Fixed a couple of DVD minors. Thanks to Andrew T. Veliath
  <andrewtv@usa.net> for telling me and for having defined the various
  DVD structures and ioctls in the first place! He designed the original
  DVD patches for ide-cd and while I rearranged and unified them, the
  interface is still the same.
  
  3.03 Sep 1, 1999 - Jens Axboe <axboe@image.dk>
  -- Moved the rest of the audio ioctls from the CD-ROM drivers here. Only
  CDROMREADTOCENTRY and CDROMREADTOCHDR are left.
  -- Moved the CDROMREADxxx ioctls in here.
  -- Defined the cdrom_get_last_written and cdrom_get_next_block as ioctls
  and exported functions.
  -- Erik Andersen <andersen@xmission.com> modified all SCMD_ commands
  to now read GPCMD_ for the new generic packet interface. All low level
  drivers are updated as well.
  -- Various other cleanups.

  3.04 Sep 12, 1999 - Jens Axboe <axboe@image.dk>
  -- Fixed a couple of possible memory leaks (if an operation failed and
  we didn't free the buffer before returning the error).
  -- Integrated Uniform CD Changer handling from Richard Sharman
  <rsharman@pobox.com>.
  -- Defined CD_DVD and CD_CHANGER log levels.
  -- Fixed the CDROMREADxxx ioctls.
  -- CDROMPLAYTRKIND uses the GPCMD_PLAY_AUDIO_MSF command - too few
  drives supported it. We lose the index part, however.
  -- Small modifications to accommodate opens of /dev/hdc1, required
  for ide-cd to handle multisession discs.
  -- Export cdrom_mode_sense and cdrom_mode_select.
  -- init_cdrom_command() for setting up a cgc command.
  
  3.05 Oct 24, 1999 - Jens Axboe <axboe@image.dk>
  -- Changed the interface for CDROM_SEND_PACKET. Before it was virtually
  impossible to send the drive data in a sensible way.
  -- Lowered stack usage in mmc_ioctl(), dvd_read_disckey(), and
  dvd_read_manufact.
  -- Added setup of write mode for packet writing.
  -- Fixed CDDA ripping with cdda2wav - accept much larger requests of
  number of frames and split the reads in blocks of 8.

  3.06 Dec 13, 1999 - Jens Axboe <axboe@image.dk>
  -- Added support for changing the region of DVD drives.
  -- Added sense data to generic command.

  3.07 Feb 2, 2000 - Jens Axboe <axboe@suse.de>
  -- Do same "read header length" trick in cdrom_get_disc_info() as
  we do in cdrom_get_track_info() -- some drive don't obey specs and
  fail if they can't supply the full Mt Fuji size table.
  -- Deleted stuff related to setting up write modes. It has a different
  home now.
  -- Clear header length in mode_select unconditionally.
  -- Removed the register_disk() that was added, not needed here.

  3.08 May 1, 2000 - Jens Axboe <axboe@suse.de>
  -- Fix direction flag in setup_send_key and setup_report_key. This
  gave some SCSI adapters problems.
  -- Always return -EROFS for write opens
  -- Convert to module_init/module_exit style init and remove some
  of the #ifdef MODULE stuff
  -- Fix several dvd errors - DVD_LU_SEND_ASF should pass agid,
  DVD_HOST_SEND_RPC_STATE did not set buffer size in cdb, and
  dvd_do_auth passed uninitialized data to drive because init_cdrom_command
  did not clear a 0 sized buffer.
  
  3.09 May 12, 2000 - Jens Axboe <axboe@suse.de>
  -- Fix Video-CD on SCSI drives that don't support READ_CD command. In
  that case switch block size and issue plain READ_10 again, then switch
  back.

  3.10 Jun 10, 2000 - Jens Axboe <axboe@suse.de>
  -- Fix volume control on CD's - old SCSI-II drives now use their own
  code, as doing MODE6 stuff in here is really not my intention.
  -- Use READ_DISC_INFO for more reliable end-of-disc.

  3.11 Jun 12, 2000 - Jens Axboe <axboe@suse.de>
  -- Fix bug in getting rpc phase 2 region info.
  -- Reinstate "correct" CDROMPLAYTRKIND

   3.12 Oct 18, 2000 - Jens Axboe <axboe@suse.de>
  -- Use quiet bit on packet commands not known to work

   3.20 Dec 17, 2003 - Jens Axboe <axboe@suse.de>
  -- Various fixes and lots of cleanups not listed :-)
  -- Locking fixes
  -- Mt Rainier support
  -- DVD-RAM write open fixes

  Nov 5 2001, Aug 8 2002. Modified by Andy Polyakov
  <appro@fy.chalmers.se> to support MMC-3 compliant DVD+RW units.

  Modified by Nigel Kukard <nkukard@lbsd.net> - support DVD+RW
  2.4.x patch by Andy Polyakov <appro@fy.chalmers.se>

-------------------------------------------------------------------------*/

#define REVISION "Revision: 3.20"
#define VERSION "Id: cdrom.c 3.20 2003/12/17"

/* I use an error-log mask to give fine grain control over the type of
   messages dumped to the system logs.  The available masks include: */
#define CD_NOTHING      0x0
#define CD_WARNING	0x1
#define CD_REG_UNREG	0x2
#define CD_DO_IOCTL	0x4
#define CD_OPEN		0x8
#define CD_CLOSE	0x10
#define CD_COUNT_TRACKS 0x20
#define CD_CHANGER	0x40
#define CD_DVD		0x80

/* Define this to remove _all_ the debugging messages */
/* #define ERRLOGMASK CD_NOTHING */
#define ERRLOGMASK CD_WARNING
/* #define ERRLOGMASK (CD_WARNING|CD_OPEN|CD_COUNT_TRACKS|CD_CLOSE) */
/* #define ERRLOGMASK (CD_WARNING|CD_REG_UNREG|CD_DO_IOCTL|CD_OPEN|CD_CLOSE|CD_COUNT_TRACKS) */

#include <linux/module.h>
#include <linux/fs.h>
#include <linux/buffer_head.h>
#include <linux/major.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/slab.h> 
#include <linux/cdrom.h>
#include <linux/sysctl.h>
#include <linux/proc_fs.h>
#include <linux/blkpg.h>
#include <linux/init.h>
#include <linux/fcntl.h>
#include <linux/blkdev.h>
#include <linux/times.h>

#include <asm/uaccess.h>

/* used to tell the module to turn on full debugging messages */
static int debug;
/* used to keep tray locked at all times */
static int keeplocked;
/* default compatibility mode */
static int autoclose=1;
static int autoeject;
static int lockdoor = 1;
/* will we ever get to use this... sigh. */
static int check_media_type;
/* automatically restart mrw format */
static int mrw_format_restart = 1;
module_param(debug, bool, 0);
module_param(autoclose, bool, 0);
module_param(autoeject, bool, 0);
module_param(lockdoor, bool, 0);
module_param(check_media_type, bool, 0);
module_param(mrw_format_restart, bool, 0);

static DEFINE_MUTEX(cdrom_mutex);

static const char *mrw_format_status[] = {
	"not mrw",
	"bgformat inactive",
	"bgformat active",
	"mrw complete",
};

static const char *mrw_address_space[] = { "DMA", "GAA" };

#if (ERRLOGMASK!=CD_NOTHING)
#define cdinfo(type, fmt, args...) \
        if ((ERRLOGMASK & type) || debug==1 ) \
            printk(KERN_INFO "cdrom: " fmt, ## args)
#else
#define cdinfo(type, fmt, args...) 
#endif

/* These are used to simplify getting data in from and back to user land */
#define IOCTL_IN(arg, type, in)					\
	if (copy_from_user(&(in), (type __user *) (arg), sizeof (in)))	\
		return -EFAULT;

#define IOCTL_OUT(arg, type, out) \
	if (copy_to_user((type __user *) (arg), &(out), sizeof (out)))	\
		return -EFAULT;

/* The (cdo->capability & ~cdi->mask & CDC_XXX) construct was used in
   a lot of places. This macro makes the code more clear. */
#define CDROM_CAN(type) (cdi->ops->capability & ~cdi->mask & (type))

/* used in the audio ioctls */
#define CHECKAUDIO if ((ret=check_for_audio_disc(cdi, cdo))) return ret

/*
 * Another popular OS uses 7 seconds as the hard timeout for default
 * commands, so it is a good choice for us as well.
 */
#define CDROM_DEF_TIMEOUT	(7 * HZ)

/* Not-exported routines. */
static int open_for_data(struct cdrom_device_info * cdi);
static int check_for_audio_disc(struct cdrom_device_info * cdi,
			 struct cdrom_device_ops * cdo);
static void sanitize_format(union cdrom_addr *addr, 
		u_char * curr, u_char requested);
static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd,
		     unsigned long arg);

int cdrom_get_last_written(struct cdrom_device_info *, long *);
static int cdrom_get_next_writable(struct cdrom_device_info *, long *);
static void cdrom_count_tracks(struct cdrom_device_info *, tracktype*);

static int cdrom_mrw_exit(struct cdrom_device_info *cdi);

static int cdrom_get_disc_info(struct cdrom_device_info *cdi, disc_information *di);

static void cdrom_sysctl_register(void);

static LIST_HEAD(cdrom_list);

static int cdrom_dummy_generic_packet(struct cdrom_device_info *cdi,
				      struct packet_command *cgc)
{
	if (cgc->sense) {
		cgc->sense->sense_key = 0x05;
		cgc->sense->asc = 0x20;
		cgc->sense->ascq = 0x00;
	}

	cgc->stat = -EIO;
	return -EIO;
}

/* This macro makes sure we don't have to check on cdrom_device_ops
 * existence in the run-time routines below. Change_capability is a
 * hack to have the capability flags defined const, while we can still
 * change it here without gcc complaining at every line.
 */
#define ENSURE(call, bits) if (cdo->call == NULL) *change_capability &= ~(bits)

int register_cdrom(struct cdrom_device_info *cdi)
{
	static char banner_printed;
        struct cdrom_device_ops *cdo = cdi->ops;
        int *change_capability = (int *)&cdo->capability; /* hack */

	cdinfo(CD_OPEN, "entering register_cdrom\n"); 

	if (cdo->open == NULL || cdo->release == NULL)
		return -EINVAL;
	if (!banner_printed) {
		printk(KERN_INFO "Uniform CD-ROM driver " REVISION "\n");
		banner_printed = 1;
		cdrom_sysctl_register();
	}

	ENSURE(drive_status, CDC_DRIVE_STATUS );
	ENSURE(media_changed, CDC_MEDIA_CHANGED);
	ENSURE(tray_move, CDC_CLOSE_TRAY | CDC_OPEN_TRAY);
	ENSURE(lock_door, CDC_LOCK);
	ENSURE(select_speed, CDC_SELECT_SPEED);
	ENSURE(get_last_session, CDC_MULTI_SESSION);
	ENSURE(get_mcn, CDC_MCN);
	ENSURE(reset, CDC_RESET);
	ENSURE(generic_packet, CDC_GENERIC_PACKET);
	cdi->mc_flags = 0;
	cdo->n_minors = 0;
        cdi->options = CDO_USE_FFLAGS;
	
	if (autoclose==1 && CDROM_CAN(CDC_CLOSE_TRAY))
		cdi->options |= (int) CDO_AUTO_CLOSE;
	if (autoeject==1 && CDROM_CAN(CDC_OPEN_TRAY))
		cdi->options |= (int) CDO_AUTO_EJECT;
	if (lockdoor==1)
		cdi->options |= (int) CDO_LOCK;
	if (check_media_type==1)
		cdi->options |= (int) CDO_CHECK_TYPE;

	if (CDROM_CAN(CDC_MRW_W))
		cdi->exit = cdrom_mrw_exit;

	if (cdi->disk)
		cdi->cdda_method = CDDA_BPC_FULL;
	else
		cdi->cdda_method = CDDA_OLD;

	if (!cdo->generic_packet)
		cdo->generic_packet = cdrom_dummy_generic_packet;

	cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" registered\n", cdi->name);
	mutex_lock(&cdrom_mutex);
	list_add(&cdi->list, &cdrom_list);
	mutex_unlock(&cdrom_mutex);
	return 0;
}
#undef ENSURE

void unregister_cdrom(struct cdrom_device_info *cdi)
{
	cdinfo(CD_OPEN, "entering unregister_cdrom\n"); 

	mutex_lock(&cdrom_mutex);
	list_del(&cdi->list);
	mutex_unlock(&cdrom_mutex);

	if (cdi->exit)
		cdi->exit(cdi);

	cdi->ops->n_minors--;
	cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" unregistered\n", cdi->name);
}

int cdrom_get_media_event(struct cdrom_device_info *cdi,
			  struct media_event_desc *med)
{
	struct packet_command cgc;
	unsigned char buffer[8];
	struct event_header *eh = (struct event_header *) buffer;

	init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
	cgc.cmd[0] = GPCMD_GET_EVENT_STATUS_NOTIFICATION;
	cgc.cmd[1] = 1;		/* IMMED */
	cgc.cmd[4] = 1 << 4;	/* media event */
	cgc.cmd[8] = sizeof(buffer);
	cgc.quiet = 1;

	if (cdi->ops->generic_packet(cdi, &cgc))
		return 1;

	if (be16_to_cpu(eh->data_len) < sizeof(*med))
		return 1;

	if (eh->nea || eh->notification_class != 0x4)
		return 1;

	memcpy(med, &buffer[sizeof(*eh)], sizeof(*med));
	return 0;
}

/*
 * the first prototypes used 0x2c as the page code for the mrw mode page,
 * subsequently this was changed to 0x03. probe the one used by this drive
 */
static int cdrom_mrw_probe_pc(struct cdrom_device_info *cdi)
{
	struct packet_command cgc;
	char buffer[16];

	init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);

	cgc.timeout = HZ;
	cgc.quiet = 1;

	if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC, 0)) {
		cdi->mrw_mode_page = MRW_MODE_PC;
		return 0;
	} else if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC_PRE1, 0)) {
		cdi->mrw_mode_page = MRW_MODE_PC_PRE1;
		return 0;
	}

	return 1;
}

static int cdrom_is_mrw(struct cdrom_device_info *cdi, int *write)
{
	struct packet_command cgc;
	struct mrw_feature_desc *mfd;
	unsigned char buffer[16];
	int ret;

	*write = 0;

	init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);

	cgc.cmd[0] = GPCMD_GET_CONFIGURATION;
	cgc.cmd[3] = CDF_MRW;
	cgc.cmd[8] = sizeof(buffer);
	cgc.quiet = 1;

	if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
		return ret;

	mfd = (struct mrw_feature_desc *)&buffer[sizeof(struct feature_header)];
	if (be16_to_cpu(mfd->feature_code) != CDF_MRW)
		return 1;
	*write = mfd->write;

	if ((ret = cdrom_mrw_probe_pc(cdi))) {
		*write = 0;
		return ret;
	}

	return 0;
}

static int cdrom_mrw_bgformat(struct cdrom_device_info *cdi, int cont)
{
	struct packet_command cgc;
	unsigned char buffer[12];
	int ret;

	printk(KERN_INFO "cdrom: %sstarting format\n", cont ? "Re" : "");

	/*
	 * FmtData bit set (bit 4), format type is 1
	 */
	init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_WRITE);
	cgc.cmd[0] = GPCMD_FORMAT_UNIT;
	cgc.cmd[1] = (1 << 4) | 1;

	cgc.timeout = 5 * 60 * HZ;

	/*
	 * 4 byte format list header, 8 byte format list descriptor
	 */
	buffer[1] = 1 << 1;
	buffer[3] = 8;

	/*
	 * nr_blocks field
	 */
	buffer[4] = 0xff;
	buffer[5] = 0xff;
	buffer[6] = 0xff;
	buffer[7] = 0xff;