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usr /
src /
linux-headers-5.15.0-25 /
include /
linux /
[ HOME SHELL ]
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amba
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drwxr-xr-x
atomic
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drwxr-xr-x
avf
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drwxr-xr-x
bcma
[ DIR ]
drwxr-xr-x
byteorder
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drwxr-xr-x
can
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drwxr-xr-x
ceph
[ DIR ]
drwxr-xr-x
clk
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drwxr-xr-x
crush
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decompress
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device
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dma
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dsa
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fsl
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gpio
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greybus
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hsi
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i3c
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input
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irqchip
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isdn
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lockd
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mailbox
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mfd
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mlx4
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mmc
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mtd
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mux
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net
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netfilter
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netfilter_arp
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netfilter_bridge
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drwxr-xr-x
netfilter_ipv4
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netfilter_ipv6
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pcs
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perf
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phy
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pinctrl
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platform_data
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power
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qed
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raid
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regulator
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remoteproc
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drwxr-xr-x
reset
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rpmsg
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rtc
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drwxr-xr-x
sched
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drwxr-xr-x
soc
[ DIR ]
drwxr-xr-x
soundwire
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drwxr-xr-x
spi
[ DIR ]
drwxr-xr-x
ssb
[ DIR ]
drwxr-xr-x
sunrpc
[ DIR ]
drwxr-xr-x
surface_aggregator
[ DIR ]
drwxr-xr-x
ulpi
[ DIR ]
drwxr-xr-x
unaligned
[ DIR ]
drwxr-xr-x
usb
[ DIR ]
drwxr-xr-x
8250_pci.h
1.01
KB
-rw-r--r--
a.out.h
354
B
-rw-r--r--
acct.h
2.49
KB
-rw-r--r--
acpi.h
39.5
KB
-rw-r--r--
acpi_dma.h
3.08
KB
-rw-r--r--
acpi_iort.h
2.27
KB
-rw-r--r--
acpi_mdio.h
631
B
-rw-r--r--
acpi_pmtmr.h
674
B
-rw-r--r--
acpi_viot.h
389
B
-rw-r--r--
adb.h
1.79
KB
-rw-r--r--
adfs_fs.h
574
B
-rw-r--r--
adreno-smmu-priv.h
2.74
KB
-rw-r--r--
adxl.h
310
B
-rw-r--r--
aer.h
1.78
KB
-rw-r--r--
agp_backend.h
3.45
KB
-rw-r--r--
agpgart.h
3.79
KB
-rw-r--r--
ahci-remap.h
607
B
-rw-r--r--
ahci_platform.h
1.54
KB
-rw-r--r--
aio.h
651
B
-rw-r--r--
alarmtimer.h
1.94
KB
-rw-r--r--
alcor_pci.h
8.83
KB
-rw-r--r--
align.h
552
B
-rw-r--r--
altera_jtaguart.h
379
B
-rw-r--r--
altera_uart.h
397
B
-rw-r--r--
amd-iommu.h
6.18
KB
-rw-r--r--
anon_inodes.h
670
B
-rw-r--r--
apm-emulation.h
1.56
KB
-rw-r--r--
apm_bios.h
2.25
KB
-rw-r--r--
apple-gmux.h
918
B
-rw-r--r--
apple_bl.h
498
B
-rw-r--r--
arch_topology.h
2.49
KB
-rw-r--r--
arm-cci.h
1.36
KB
-rw-r--r--
arm-smccc.h
17.7
KB
-rw-r--r--
arm_ffa.h
7.36
KB
-rw-r--r--
arm_sdei.h
2.51
KB
-rw-r--r--
armada-37xx-rwtm-mailbox.h
431
B
-rw-r--r--
ascii85.h
555
B
-rw-r--r--
asn1.h
1.79
KB
-rw-r--r--
asn1_ber_bytecode.h
2.52
KB
-rw-r--r--
asn1_decoder.h
468
B
-rw-r--r--
asn1_encoder.h
1006
B
-rw-r--r--
assoc_array.h
2.88
KB
-rw-r--r--
assoc_array_priv.h
5.3
KB
-rw-r--r--
async.h
4.26
KB
-rw-r--r--
async_tx.h
6.7
KB
-rw-r--r--
ata.h
32.52
KB
-rw-r--r--
ata_platform.h
749
B
-rw-r--r--
atalk.h
4.48
KB
-rw-r--r--
ath9k_platform.h
1.44
KB
-rw-r--r--
atm.h
287
B
-rw-r--r--
atm_tcp.h
511
B
-rw-r--r--
atmdev.h
9.99
KB
-rw-r--r--
atmel-isc-media.h
2.07
KB
-rw-r--r--
atmel-mci.h
1.4
KB
-rw-r--r--
atmel-ssc.h
9.74
KB
-rw-r--r--
atmel_pdc.h
1.26
KB
-rw-r--r--
atomic.h
2.58
KB
-rw-r--r--
attribute_container.h
2.74
KB
-rw-r--r--
audit.h
19.45
KB
-rw-r--r--
auto_dev-ioctl.h
296
B
-rw-r--r--
auto_fs.h
278
B
-rw-r--r--
auxiliary_bus.h
2.48
KB
-rw-r--r--
auxvec.h
304
B
-rw-r--r--
average.h
2.42
KB
-rw-r--r--
backing-dev-defs.h
8.55
KB
-rw-r--r--
backing-dev.h
11.81
KB
-rw-r--r--
backlight.h
13.13
KB
-rw-r--r--
badblocks.h
2.14
KB
-rw-r--r--
balloon_compaction.h
6.59
KB
-rw-r--r--
bcd.h
559
B
-rw-r--r--
bch.h
2.1
KB
-rw-r--r--
bcm47xx_nvram.h
1.01
KB
-rw-r--r--
bcm47xx_sprom.h
616
B
-rw-r--r--
bcm47xx_wdt.h
555
B
-rw-r--r--
bcm963xx_nvram.h
2.96
KB
-rw-r--r--
bcm963xx_tag.h
3.6
KB
-rw-r--r--
binfmts.h
4.48
KB
-rw-r--r--
bio.h
19.64
KB
-rw-r--r--
bit_spinlock.h
2.3
KB
-rw-r--r--
bitfield.h
4.75
KB
-rw-r--r--
bitmap.h
21.62
KB
-rw-r--r--
bitops.h
8.53
KB
-rw-r--r--
bitrev.h
2.53
KB
-rw-r--r--
bits.h
1.35
KB
-rw-r--r--
blk-cgroup.h
21.4
KB
-rw-r--r--
blk-crypto.h
4.02
KB
-rw-r--r--
blk-mq-pci.h
269
B
-rw-r--r--
blk-mq-rdma.h
273
B
-rw-r--r--
blk-mq-virtio.h
293
B
-rw-r--r--
blk-mq.h
19.37
KB
-rw-r--r--
blk-pm.h
708
B
-rw-r--r--
blk_types.h
15.42
KB
-rw-r--r--
blkdev.h
56.35
KB
-rw-r--r--
blkpg.h
436
B
-rw-r--r--
blktrace_api.h
3.77
KB
-rw-r--r--
blockgroup_lock.h
810
B
-rw-r--r--
bma150.h
1.26
KB
-rw-r--r--
bootconfig.h
8.51
KB
-rw-r--r--
bootmem_info.h
1.61
KB
-rw-r--r--
bottom_half.h
974
B
-rw-r--r--
bpf-cgroup.h
18.52
KB
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bpf-netns.h
1.52
KB
-rw-r--r--
bpf.h
69.46
KB
-rw-r--r--
bpf_lirc.h
698
B
-rw-r--r--
bpf_local_storage.h
5.23
KB
-rw-r--r--
bpf_lsm.h
1.42
KB
-rw-r--r--
bpf_trace.h
166
B
-rw-r--r--
bpf_types.h
5.41
KB
-rw-r--r--
bpf_verifier.h
18.45
KB
-rw-r--r--
bpfilter.h
791
B
-rw-r--r--
bpfptr.h
1.83
KB
-rw-r--r--
brcmphy.h
13.67
KB
-rw-r--r--
bsearch.h
624
B
-rw-r--r--
bsg-lib.h
1.72
KB
-rw-r--r--
bsg.h
492
B
-rw-r--r--
btf.h
7.26
KB
-rw-r--r--
btf_ids.h
5.32
KB
-rw-r--r--
btree-128.h
2.67
KB
-rw-r--r--
btree-type.h
3.9
KB
-rw-r--r--
btree.h
6.84
KB
-rw-r--r--
btrfs.h
145
B
-rw-r--r--
buffer_head.h
13.54
KB
-rw-r--r--
bug.h
2.17
KB
-rw-r--r--
build-salt.h
375
B
-rw-r--r--
build_bug.h
2.76
KB
-rw-r--r--
buildid.h
561
B
-rw-r--r--
bvec.h
6.17
KB
-rw-r--r--
c2port.h
1.35
KB
-rw-r--r--
cache.h
2.55
KB
-rw-r--r--
cacheinfo.h
3.75
KB
-rw-r--r--
capability.h
8.29
KB
-rw-r--r--
cb710.h
5.36
KB
-rw-r--r--
cc_platform.h
2.32
KB
-rw-r--r--
cciss_ioctl.h
1.03
KB
-rw-r--r--
ccp.h
18.14
KB
-rw-r--r--
cdev.h
845
B
-rw-r--r--
cdrom.h
8.98
KB
-rw-r--r--
cfag12864b.h
1.47
KB
-rw-r--r--
cfi.h
1.13
KB
-rw-r--r--
cgroup-defs.h
24.1
KB
-rw-r--r--
cgroup.h
28.19
KB
-rw-r--r--
cgroup_rdma.h
1.18
KB
-rw-r--r--
cgroup_subsys.h
1.23
KB
-rw-r--r--
circ_buf.h
1.09
KB
-rw-r--r--
cleancache.h
3.89
KB
-rw-r--r--
clk-provider.h
56.38
KB
-rw-r--r--
clk.h
29.59
KB
-rw-r--r--
clkdev.h
1.29
KB
-rw-r--r--
clockchips.h
7.27
KB
-rw-r--r--
clocksource.h
9.57
KB
-rw-r--r--
clocksource_ids.h
247
B
-rw-r--r--
cm4000_cs.h
199
B
-rw-r--r--
cma.h
1.59
KB
-rw-r--r--
cn_proc.h
1.85
KB
-rw-r--r--
cnt32_to_63.h
3.46
KB
-rw-r--r--
coda.h
2.16
KB
-rw-r--r--
compaction.h
7.15
KB
-rw-r--r--
compat.h
31.35
KB
-rw-r--r--
compiler-clang.h
2.27
KB
-rw-r--r--
compiler-gcc.h
4.44
KB
-rw-r--r--
compiler-intel.h
949
B
-rw-r--r--
compiler-version.h
517
B
-rw-r--r--
compiler.h
7.78
KB
-rw-r--r--
compiler_attributes.h
12.15
KB
-rw-r--r--
compiler_types.h
10.46
KB
-rw-r--r--
completion.h
4
KB
-rw-r--r--
component.h
4.07
KB
-rw-r--r--
configfs.h
8.48
KB
-rw-r--r--
connector.h
3.83
KB
-rw-r--r--
console.h
7.28
KB
-rw-r--r--
console_struct.h
7.08
KB
-rw-r--r--
consolemap.h
1.05
KB
-rw-r--r--
const.h
421
B
-rw-r--r--
container.h
610
B
-rw-r--r--
context_tracking.h
3.28
KB
-rw-r--r--
context_tracking_state.h
1.58
KB
-rw-r--r--
cookie.h
1.22
KB
-rw-r--r--
cordic.h
2.08
KB
-rw-r--r--
coredump.h
1.23
KB
-rw-r--r--
coresight-pmu.h
1.32
KB
-rw-r--r--
coresight-stm.h
152
B
-rw-r--r--
coresight.h
17.81
KB
-rw-r--r--
count_zeros.h
1.42
KB
-rw-r--r--
counter.h
15.13
KB
-rw-r--r--
counter_enum.h
1.43
KB
-rw-r--r--
cper.h
16.41
KB
-rw-r--r--
cpu.h
7.31
KB
-rw-r--r--
cpu_cooling.h
1.86
KB
-rw-r--r--
cpu_pm.h
2.38
KB
-rw-r--r--
cpu_rmap.h
1.68
KB
-rw-r--r--
cpufeature.h
1.71
KB
-rw-r--r--
cpufreq.h
32.57
KB
-rw-r--r--
cpuhotplug.h
16.47
KB
-rw-r--r--
cpuidle.h
10.27
KB
-rw-r--r--
cpuidle_haltpoll.h
312
B
-rw-r--r--
cpumask.h
28.61
KB
-rw-r--r--
cpuset.h
7.34
KB
-rw-r--r--
crash_core.h
3.38
KB
-rw-r--r--
crash_dump.h
4.05
KB
-rw-r--r--
crc-ccitt.h
609
B
-rw-r--r--
crc-itu-t.h
531
B
-rw-r--r--
crc-t10dif.h
453
B
-rw-r--r--
crc16.h
540
B
-rw-r--r--
crc32.h
2.83
KB
-rw-r--r--
crc32c.h
331
B
-rw-r--r--
crc32poly.h
610
B
-rw-r--r--
crc4.h
192
B
-rw-r--r--
crc64.h
280
B
-rw-r--r--
crc7.h
316
B
-rw-r--r--
crc8.h
3.66
KB
-rw-r--r--
cred.h
12.48
KB
-rw-r--r--
crypto.h
27.08
KB
-rw-r--r--
cs5535.h
6.13
KB
-rw-r--r--
ctype.h
1.87
KB
-rw-r--r--
cuda.h
613
B
-rw-r--r--
damon.h
10.35
KB
-rw-r--r--
dasd_mod.h
204
B
-rw-r--r--
davinci_emac.h
1.05
KB
-rw-r--r--
dax.h
6.56
KB
-rw-r--r--
dca.h
1.88
KB
-rw-r--r--
dcache.h
18.63
KB
-rw-r--r--
dccp.h
10.73
KB
-rw-r--r--
debug_locks.h
1.59
KB
-rw-r--r--
debugfs.h
11.22
KB
-rw-r--r--
debugobjects.h
3.99
KB
-rw-r--r--
delay.h
2.43
KB
-rw-r--r--
delayacct.h
5.45
KB
-rw-r--r--
delayed_call.h
709
B
-rw-r--r--
dev_printk.h
9.05
KB
-rw-r--r--
devcoredump.h
2.21
KB
-rw-r--r--
devfreq-event.h
5.95
KB
-rw-r--r--
devfreq.h
13.98
KB
-rw-r--r--
devfreq_cooling.h
2.7
KB
-rw-r--r--
device-mapper.h
18.92
KB
-rw-r--r--
device.h
32.89
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-rw-r--r--
device_cgroup.h
1.57
KB
-rw-r--r--
devm-helpers.h
2.68
KB
-rw-r--r--
devpts_fs.h
1.13
KB
-rw-r--r--
dfl.h
2.38
KB
-rw-r--r--
digsig.h
1.18
KB
-rw-r--r--
dim.h
9.13
KB
-rw-r--r--
dio.h
10.76
KB
-rw-r--r--
dirent.h
215
B
-rw-r--r--
dlm.h
5.86
KB
-rw-r--r--
dlm_plock.h
532
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-rw-r--r--
dm-bufio.h
4.88
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dm-dirty-log.h
3.94
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-rw-r--r--
dm-io.h
1.93
KB
-rw-r--r--
dm-kcopyd.h
2.94
KB
-rw-r--r--
dm-region-hash.h
3.11
KB
-rw-r--r--
dm9000.h
987
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-rw-r--r--
dma-buf-map.h
8.12
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-rw-r--r--
dma-buf.h
20.47
KB
-rw-r--r--
dma-direct.h
3.59
KB
-rw-r--r--
dma-direction.h
407
B
-rw-r--r--
dma-fence-array.h
2.14
KB
-rw-r--r--
dma-fence-chain.h
3.07
KB
-rw-r--r--
dma-fence.h
20.25
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-rw-r--r--
dma-heap.h
1.58
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-rw-r--r--
dma-iommu.h
2.21
KB
-rw-r--r--
dma-map-ops.h
12.73
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-rw-r--r--
dma-mapping.h
19.81
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-rw-r--r--
dma-resv.h
9.05
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-rw-r--r--
dmaengine.h
53.53
KB
-rw-r--r--
dmapool.h
1.79
KB
-rw-r--r--
dmar.h
7.74
KB
-rw-r--r--
dmi.h
4.27
KB
-rw-r--r--
dnotify.h
1.02
KB
-rw-r--r--
dns_resolver.h
1.36
KB
-rw-r--r--
dqblk_qtree.h
2.19
KB
-rw-r--r--
dqblk_v1.h
327
B
-rw-r--r--
dqblk_v2.h
406
B
-rw-r--r--
drbd.h
10.07
KB
-rw-r--r--
drbd_genl.h
21.49
KB
-rw-r--r--
drbd_genl_api.h
1.77
KB
-rw-r--r--
drbd_limits.h
7.82
KB
-rw-r--r--
ds2782_battery.h
158
B
-rw-r--r--
dtlk.h
3.5
KB
-rw-r--r--
dtpm.h
1.64
KB
-rw-r--r--
dw_apb_timer.h
1.53
KB
-rw-r--r--
dynamic_debug.h
6.6
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elevator.h
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elf-fdpic.h
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elf-randomize.h
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elfcore-compat.h
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elfcore.h
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energy_model.h
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errseq.h
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etherdevice.h
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ethtool.h
31.72
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ethtool_netlink.h
1.98
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eventfd.h
2.1
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eventpoll.h
2.4
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evm.h
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export.h
5.24
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exportfs.h
8.25
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ext2_fs.h
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extable.h
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extcon-provider.h
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extcon.h
10.17
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f2fs_fs.h
19
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fanotify.h
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fault-inject-usercopy.h
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fault-inject.h
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fb.h
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fbcon.h
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833
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fileattr.h
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fips.h
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firewire.h
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firmware-map.h
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firmware.h
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fixp-arith.h
4.19
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flat.h
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font.h
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fortify-string.h
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freelist.h
3.8
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freezer.h
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frontswap.h
3.04
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fs.h
120.45
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fs_context.h
8.68
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fs_enet_pd.h
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fs_parser.h
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fs_stack.h
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629
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fsl-diu-fb.h
3.87
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fsl_devices.h
4.16
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fsl_hypervisor.h
2.76
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fsnotify.h
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fsnotify_backend.h
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fsverity.h
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ftrace_irq.h
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gameport.h
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genalloc.h
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generic-radix-tree.h
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genetlink.h
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genhd.h
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genl_magic_func.h
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genl_magic_struct.h
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getcpu.h
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gfp.h
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glob.h
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gnss.h
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goldfish.h
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gpio-pxa.h
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gpio.h
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gpio_keys.h
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greybus.h
4.14
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hardirq.h
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hash.h
3
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hashtable.h
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hdlc.h
3.19
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hdlcdrv.h
6.32
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hdmi.h
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hid-debug.h
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hid-roccat.h
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hidden.h
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hiddev.h
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highmem.h
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highuid.h
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hil_mlc.h
5.13
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hippidevice.h
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hmm.h
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host1x.h
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hp_sdc.h
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hpet.h
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hrtimer_defs.h
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htcpld.h
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huge_mm.h
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hugetlb.h
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hugetlb_cgroup.h
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hugetlb_inline.h
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hw_breakpoint.h
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hw_random.h
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hwmon-sysfs.h
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hwmon-vid.h
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hwmon.h
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hwspinlock.h
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hyperv.h
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hypervisor.h
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i2c-algo-bit.h
1.4
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icmp.h
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icmpv6.h
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idle_inject.h
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idr.h
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ieee80211.h
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ieee802154.h
11.12
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if_arp.h
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if_bridge.h
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if_eql.h
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if_ether.h
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if_fddi.h
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if_hsr.h
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if_ltalk.h
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if_tunnel.h
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if_vlan.h
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igmp.h
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ihex.h
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ima.h
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imx-media.h
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in6.h
1.63
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indirect_call_wrapper.h
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inet.h
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inet_diag.h
2.74
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inetdevice.h
8.87
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init.h
11.39
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init_ohci1394_dma.h
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init_syscalls.h
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init_task.h
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initrd.h
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inotify.h
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input.h
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instrumentation.h
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instrumented.h
3.6
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integrity.h
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intel-iommu.h
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intel-ish-client-if.h
3.97
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intel-svm.h
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intel_rapl.h
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intel_th.h
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interconnect-provider.h
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interconnect.h
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interrupt.h
23.81
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interval_tree.h
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interval_tree_generic.h
6.7
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io-64-nonatomic-lo-hi.h
2.41
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io-mapping.h
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io-pgtable.h
8.39
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io.h
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io_uring.h
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226
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ioam6_genl.h
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ioam6_iptunnel.h
285
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iocontext.h
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iomap.h
11.67
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iommu-helper.h
1.12
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iommu.h
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iopoll.h
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ioport.h
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ioprio.h
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iova.h
6.15
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ip.h
1
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ipack.h
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ipc.h
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ipc_namespace.h
4.98
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ipmi.h
10.88
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ipmi_smi.h
7.98
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ipv6.h
8.67
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ipv6_route.h
372
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irq.h
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irq_poll.h
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irq_sim.h
789
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irq_work.h
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irqbypass.h
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irqchip.h
2.33
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irqdesc.h
7.75
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irqdomain.h
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irqflags.h
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irqhandler.h
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irqnr.h
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irqreturn.h
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isapnp.h
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iscsi_boot_sysfs.h
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iscsi_ibft.h
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iversion.h
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jbd2.h
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jhash.h
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jiffies.h
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journal-head.h
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joystick.h
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jump_label.h
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jump_label_ratelimit.h
2.77
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jz4740-adc.h
1023
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jz4780-nemc.h
976
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kallsyms.h
4.5
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kasan-checks.h
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kasan-tags.h
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kasan.h
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kbd_diacr.h
198
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kbd_kern.h
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kbuild.h
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kconfig.h
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kcore.h
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kcov.h
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1.88
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kdb.h
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kdebug.h
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kdev_t.h
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kern_levels.h
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kernel-page-flags.h
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kernel.h
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kernel_read_file.h
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kernel_stat.h
2.97
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kernelcapi.h
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kernfs.h
18.11
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kexec.h
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key-type.h
6.53
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key.h
15.75
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keyboard.h
665
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keyctl.h
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keyslot-manager.h
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kfence.h
8
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kfifo.h
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kgdb.h
12.05
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khugepaged.h
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klist.h
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kmemleak.h
3.27
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kmsg_dump.h
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kobj_map.h
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kobject.h
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kobject_ns.h
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kprobes.h
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472
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kthread.h
6.9
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ktime.h
5.38
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kvm_dirty_ring.h
2.73
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kvm_host.h
58.09
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kvm_irqfd.h
2
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kvm_para.h
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kvm_types.h
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l2tp.h
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lantiq.h
365
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lapb.h
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latencytop.h
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lcd.h
3.78
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lcm.h
275
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led-class-flash.h
6.74
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led-class-multicolor.h
3.26
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led-lm3530.h
3.7
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leds-bd2802.h
476
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leds-lp3944.h
950
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leds-lp3952.h
2.35
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leds-pca9532.h
866
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leds-regulator.h
1.14
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leds-ti-lmu-common.h
1.12
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leds.h
18.26
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libata.h
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qcom_scm.h
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radix-tree.h
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raid_class.h
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ramfs.h
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random.h
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rcu_segcblist.h
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rcu_sync.h
1.46
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rculist.h
28.56
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rculist_bl.h
3.29
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rculist_nulls.h
6.57
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rcupdate.h
36.33
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rcupdate_trace.h
3.08
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rcupdate_wait.h
1.73
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rcutiny.h
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rcutree.h
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rcuwait.h
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reboot-mode.h
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reboot.h
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reciprocal_div.h
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refcount.h
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regmap.h
62.95
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regset.h
11.35
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relay.h
8.47
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remoteproc.h
24.77
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resctrl.h
6.5
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reset-controller.h
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reset.h
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resource_ext.h
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restart_block.h
1.11
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rfkill.h
10.52
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3.45
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rhashtable.h
37.59
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ring_buffer.h
7.43
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rio.h
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rio_drv.h
14.32
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rio_ids.h
1.08
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rio_regs.h
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rmap.h
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rmi.h
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rodata_test.h
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root_dev.h
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rpmsg.h
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rslib.h
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rtmutex.h
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rtnetlink.h
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rtsx_common.h
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rtsx_pci.h
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rtsx_usb.h
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rwbase_rt.h
876
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rwlock.h
4.55
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rwlock_api_smp.h
7.65
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rwlock_rt.h
2.98
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rwlock_types.h
1.77
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rwsem.h
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s3c_adc_battery.h
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scc.h
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sched.h
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sched_clock.h
1.44
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scmi_protocol.h
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scpi_protocol.h
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screen_info.h
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scs.h
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scx200.h
1.82
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scx200_gpio.h
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sdb.h
4.17
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seccomp.h
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secretmem.h
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securebits.h
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security.h
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sed-opal.h
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seg6.h
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seg6_genl.h
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seg6_local.h
100
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selection.h
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sem.h
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semaphore.h
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seq_buf.h
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seq_file.h
8.75
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seq_file_net.h
730
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seqlock.h
38.18
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seqno-fence.h
3.57
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serdev.h
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serial.h
630
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serial_8250.h
6.57
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serial_bcm63xx.h
4.73
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serial_core.h
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serial_max3100.h
1.19
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serial_s3c.h
9.42
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serial_sci.h
1.6
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serio.h
4.28
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set_memory.h
1.66
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sfp.h
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sh_clk.h
5.96
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sh_dma.h
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sh_eth.h
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shdma-base.h
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shm.h
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shmem_fs.h
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shrinker.h
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signal.h
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signal_types.h
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signalfd.h
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siox.h
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siphash.h
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sizes.h
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skb_array.h
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skbuff.h
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skmsg.h
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slab_def.h
3.02
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slimbus.h
6.93
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slub_def.h
6.22
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sm501-regs.h
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sm501.h
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smc911x.h
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smc91x.h
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smp.h
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smp_types.h
1.35
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smpboot.h
1.68
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smscphy.h
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sock_diag.h
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socket.h
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sockptr.h
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sonet.h
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sony-laptop.h
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sonypi.h
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sort.h
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sound.h
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soundcard.h
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spinlock.h
14.07
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spinlock_api_smp.h
5.47
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spinlock_api_up.h
3.31
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spinlock_rt.h
4.11
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spinlock_types.h
1.78
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spinlock_types_raw.h
1.69
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spinlock_types_up.h
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spinlock_up.h
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splice.h
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spmi.h
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sram.h
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srcu.h
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srcutiny.h
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srcutree.h
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ssbi.h
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stackdepot.h
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stackprotector.h
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statfs.h
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static_call_types.h
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static_key.h
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stddef.h
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stmmac.h
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stmp3xxx_rtc_wdt.h
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stmp_device.h
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stop_machine.h
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string.h
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string_helpers.h
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stringhash.h
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stringify.h
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sungem_phy.h
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sunserialcore.h
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sunxi-rsb.h
2.89
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superhyway.h
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surface_acpi_notify.h
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suspend.h
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svga.h
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swapops.h
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swiotlb.h
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switchtec.h
10.9
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sxgbe_platform.h
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sync_core.h
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sync_file.h
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synclink.h
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sys.h
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sys_soc.h
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syscalls.h
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syscore_ops.h
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sysctl.h
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sysfb.h
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sysfs.h
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sysrq.h
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sysv_fs.h
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t10-pi.h
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task_io_accounting_ops.h
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task_work.h
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taskstats_kern.h
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tboot.h
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tc.h
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tcp.h
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tee_drv.h
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textsearch.h
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textsearch_fsm.h
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tfrc.h
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thermal.h
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thread_info.h
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threads.h
1.28
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thunderbolt.h
20.78
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ti-emif-sram.h
5.15
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ti_wilink_st.h
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tick.h
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tifm.h
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timb_dma.h
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timb_gpio.h
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time.h
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time32.h
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time_namespace.h
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timecounter.h
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timekeeper_internal.h
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timekeeping.h
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timer.h
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timerfd.h
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timeriomem-rng.h
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timerqueue.h
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timex.h
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tnum.h
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topology.h
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torture.h
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toshiba.h
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tpm.h
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tpm_command.h
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tpm_eventlog.h
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trace.h
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trace_clock.h
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trace_seq.h
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tracefs.h
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tracehook.h
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tracepoint-defs.h
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tracepoint.h
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transport_class.h
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ts-nbus.h
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tsacct_kern.h
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tty.h
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tty_buffer.h
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tty_port.h
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typecheck.h
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types.h
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u64_stats_sync.h
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uaccess.h
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ucb1400.h
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ucs2_string.h
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udp.h
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uidgid.h
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uio_driver.h
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unicode.h
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units.h
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uprobes.h
6
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usb.h
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usb_usual.h
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usbdevice_fs.h
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user-return-notifier.h
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user.h
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user_namespace.h
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userfaultfd_k.h
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util_macros.h
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utsname.h
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uuid.h
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vbox_utils.h
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vdpa.h
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verification.h
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vermagic.h
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vfio.h
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vfio_pci_core.h
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vfs.h
116
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vga_switcheroo.h
8.62
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vgaarb.h
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vhost_iotlb.h
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via-core.h
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via.h
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6.7
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virtio_byteorder.h
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virtio_caif.h
513
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virtio_config.h
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virtio_console.h
1.93
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virtio_dma_buf.h
1.12
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virtio_net.h
5.38
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virtio_pci_modern.h
3.25
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virtio_ring.h
2.95
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virtio_vsock.h
4.79
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visorbus.h
12.23
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vlynq.h
3.22
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vm_event_item.h
3.46
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vmacache.h
722
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vmalloc.h
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vme.h
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vmpressure.h
1.68
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vmstat.h
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vmw_vmci_api.h
2.88
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vmw_vmci_defs.h
27.5
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vringh.h
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vt.h
611
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vt_buffer.h
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vt_kern.h
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vtime.h
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w1-gpio.h
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w1.h
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wait.h
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wait_bit.h
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watch_queue.h
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watchdog.h
8.21
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win_minmax.h
832
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wireless.h
1.4
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wkup_m3_ipc.h
1.75
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wl12xx.h
810
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wm97xx.h
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wmi.h
1.56
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Code Editor : lsm_hooks.h
/* * Linux Security Module interfaces * * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com> * Copyright (C) 2001 Greg Kroah-Hartman <greg@kroah.com> * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com> * Copyright (C) 2001 James Morris <jmorris@intercode.com.au> * Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group) * Copyright (C) 2015 Intel Corporation. * Copyright (C) 2015 Casey Schaufler <casey@schaufler-ca.com> * Copyright (C) 2016 Mellanox Techonologies * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * Due to this file being licensed under the GPL there is controversy over * whether this permits you to write a module that #includes this file * without placing your module under the GPL. Please consult a lawyer for * advice before doing this. * */ #ifndef __LINUX_LSM_HOOKS_H #define __LINUX_LSM_HOOKS_H #include <linux/security.h> #include <linux/init.h> #include <linux/rculist.h> /** * union security_list_options - Linux Security Module hook function list * * Security hooks for program execution operations. * * @bprm_creds_for_exec: * If the setup in prepare_exec_creds did not setup @bprm->cred->security * properly for executing @bprm->file, update the LSM's portion of * @bprm->cred->security to be what commit_creds needs to install for the * new program. This hook may also optionally check permissions * (e.g. for transitions between security domains). * The hook must set @bprm->secureexec to 1 if AT_SECURE should be set to * request libc enable secure mode. * @bprm contains the linux_binprm structure. * Return 0 if the hook is successful and permission is granted. * @bprm_creds_from_file: * If @file is setpcap, suid, sgid or otherwise marked to change * privilege upon exec, update @bprm->cred to reflect that change. * This is called after finding the binary that will be executed. * without an interpreter. This ensures that the credentials will not * be derived from a script that the binary will need to reopen, which * when reopend may end up being a completely different file. This * hook may also optionally check permissions (e.g. for transitions * between security domains). * The hook must set @bprm->secureexec to 1 if AT_SECURE should be set to * request libc enable secure mode. * The hook must add to @bprm->per_clear any personality flags that * should be cleared from current->personality. * @bprm contains the linux_binprm structure. * Return 0 if the hook is successful and permission is granted. * @bprm_check_security: * This hook mediates the point when a search for a binary handler will * begin. It allows a check against the @bprm->cred->security value * which was set in the preceding creds_for_exec call. The argv list and * envp list are reliably available in @bprm. This hook may be called * multiple times during a single execve. * @bprm contains the linux_binprm structure. * Return 0 if the hook is successful and permission is granted. * @bprm_committing_creds: * Prepare to install the new security attributes of a process being * transformed by an execve operation, based on the old credentials * pointed to by @current->cred and the information set in @bprm->cred by * the bprm_creds_for_exec hook. @bprm points to the linux_binprm * structure. This hook is a good place to perform state changes on the * process such as closing open file descriptors to which access will no * longer be granted when the attributes are changed. This is called * immediately before commit_creds(). * @bprm_committed_creds: * Tidy up after the installation of the new security attributes of a * process being transformed by an execve operation. The new credentials * have, by this point, been set to @current->cred. @bprm points to the * linux_binprm structure. This hook is a good place to perform state * changes on the process such as clearing out non-inheritable signal * state. This is called immediately after commit_creds(). * * Security hooks for mount using fs_context. * [See also Documentation/filesystems/mount_api.rst] * * @fs_context_dup: * Allocate and attach a security structure to sc->security. This pointer * is initialised to NULL by the caller. * @fc indicates the new filesystem context. * @src_fc indicates the original filesystem context. * @fs_context_parse_param: * Userspace provided a parameter to configure a superblock. The LSM may * reject it with an error and may use it for itself, in which case it * should return 0; otherwise it should return -ENOPARAM to pass it on to * the filesystem. * @fc indicates the filesystem context. * @param The parameter * * Security hooks for filesystem operations. * * @sb_alloc_security: * Allocate and attach a security structure to the sb->s_security field. * The s_security field is initialized to NULL when the structure is * allocated. * @sb contains the super_block structure to be modified. * Return 0 if operation was successful. * @sb_delete: * Release objects tied to a superblock (e.g. inodes). * @sb contains the super_block structure being released. * @sb_free_security: * Deallocate and clear the sb->s_security field. * @sb contains the super_block structure to be modified. * @sb_free_mnt_opts: * Free memory associated with @mnt_ops. * @sb_eat_lsm_opts: * Eat (scan @orig options) and save them in @mnt_opts. * @sb_statfs: * Check permission before obtaining filesystem statistics for the @mnt * mountpoint. * @dentry is a handle on the superblock for the filesystem. * Return 0 if permission is granted. * @sb_mount: * Check permission before an object specified by @dev_name is mounted on * the mount point named by @nd. For an ordinary mount, @dev_name * identifies a device if the file system type requires a device. For a * remount (@flags & MS_REMOUNT), @dev_name is irrelevant. For a * loopback/bind mount (@flags & MS_BIND), @dev_name identifies the * pathname of the object being mounted. * @dev_name contains the name for object being mounted. * @path contains the path for mount point object. * @type contains the filesystem type. * @flags contains the mount flags. * @data contains the filesystem-specific data. * Return 0 if permission is granted. * @sb_copy_data: * Allow mount option data to be copied prior to parsing by the filesystem, * so that the security module can extract security-specific mount * options cleanly (a filesystem may modify the data e.g. with strsep()). * This also allows the original mount data to be stripped of security- * specific options to avoid having to make filesystems aware of them. * @orig the original mount data copied from userspace. * @copy copied data which will be passed to the security module. * Returns 0 if the copy was successful. * @sb_mnt_opts_compat: * Determine if the new mount options in @mnt_opts are allowed given * the existing mounted filesystem at @sb. * @sb superblock being compared * @mnt_opts new mount options * Return 0 if options are compatible. * @sb_remount: * Extracts security system specific mount options and verifies no changes * are being made to those options. * @sb superblock being remounted * @data contains the filesystem-specific data. * Return 0 if permission is granted. * @sb_kern_mount: * Mount this @sb if allowed by permissions. * @sb_show_options: * Show (print on @m) mount options for this @sb. * @sb_umount: * Check permission before the @mnt file system is unmounted. * @mnt contains the mounted file system. * @flags contains the unmount flags, e.g. MNT_FORCE. * Return 0 if permission is granted. * @sb_pivotroot: * Check permission before pivoting the root filesystem. * @old_path contains the path for the new location of the * current root (put_old). * @new_path contains the path for the new root (new_root). * Return 0 if permission is granted. * @sb_set_mnt_opts: * Set the security relevant mount options used for a superblock * @sb the superblock to set security mount options for * @opts binary data structure containing all lsm mount data * @sb_clone_mnt_opts: * Copy all security options from a given superblock to another * @oldsb old superblock which contain information to clone * @newsb new superblock which needs filled in * @sb_add_mnt_opt: * Add one mount @option to @mnt_opts. * @sb_parse_opts_str: * Parse a string of security data filling in the opts structure * @options string containing all mount options known by the LSM * @opts binary data structure usable by the LSM * @move_mount: * Check permission before a mount is moved. * @from_path indicates the mount that is going to be moved. * @to_path indicates the mountpoint that will be mounted upon. * @dentry_init_security: * Compute a context for a dentry as the inode is not yet available * since NFSv4 has no label backed by an EA anyway. * @dentry dentry to use in calculating the context. * @mode mode used to determine resource type. * @name name of the last path component used to create file * @ctx pointer to place the pointer to the resulting context in. * @ctxlen point to place the length of the resulting context. * @dentry_create_files_as: * Compute a context for a dentry as the inode is not yet available * and set that context in passed in creds so that new files are * created using that context. Context is calculated using the * passed in creds and not the creds of the caller. * @dentry dentry to use in calculating the context. * @mode mode used to determine resource type. * @name name of the last path component used to create file * @old creds which should be used for context calculation * @new creds to modify * * * Security hooks for inode operations. * * @inode_alloc_security: * Allocate and attach a security structure to @inode->i_security. The * i_security field is initialized to NULL when the inode structure is * allocated. * @inode contains the inode structure. * Return 0 if operation was successful. * @inode_free_security: * @inode contains the inode structure. * Deallocate the inode security structure and set @inode->i_security to * NULL. * @inode_init_security: * Obtain the security attribute name suffix and value to set on a newly * created inode and set up the incore security field for the new inode. * This hook is called by the fs code as part of the inode creation * transaction and provides for atomic labeling of the inode, unlike * the post_create/mkdir/... hooks called by the VFS. The hook function * is expected to allocate the name and value via kmalloc, with the caller * being responsible for calling kfree after using them. * If the security module does not use security attributes or does * not wish to put a security attribute on this particular inode, * then it should return -EOPNOTSUPP to skip this processing. * @inode contains the inode structure of the newly created inode. * @dir contains the inode structure of the parent directory. * @qstr contains the last path component of the new object * @name will be set to the allocated name suffix (e.g. selinux). * @value will be set to the allocated attribute value. * @len will be set to the length of the value. * Returns 0 if @name and @value have been successfully set, * -EOPNOTSUPP if no security attribute is needed, or * -ENOMEM on memory allocation failure. * @inode_init_security_anon: * Set up the incore security field for the new anonymous inode * and return whether the inode creation is permitted by the security * module or not. * @inode contains the inode structure * @name name of the anonymous inode class * @context_inode optional related inode * Returns 0 on success, -EACCES if the security module denies the * creation of this inode, or another -errno upon other errors. * @inode_create: * Check permission to create a regular file. * @dir contains inode structure of the parent of the new file. * @dentry contains the dentry structure for the file to be created. * @mode contains the file mode of the file to be created. * Return 0 if permission is granted. * @inode_link: * Check permission before creating a new hard link to a file. * @old_dentry contains the dentry structure for an existing * link to the file. * @dir contains the inode structure of the parent directory * of the new link. * @new_dentry contains the dentry structure for the new link. * Return 0 if permission is granted. * @path_link: * Check permission before creating a new hard link to a file. * @old_dentry contains the dentry structure for an existing link * to the file. * @new_dir contains the path structure of the parent directory of * the new link. * @new_dentry contains the dentry structure for the new link. * Return 0 if permission is granted. * @inode_unlink: * Check the permission to remove a hard link to a file. * @dir contains the inode structure of parent directory of the file. * @dentry contains the dentry structure for file to be unlinked. * Return 0 if permission is granted. * @path_unlink: * Check the permission to remove a hard link to a file. * @dir contains the path structure of parent directory of the file. * @dentry contains the dentry structure for file to be unlinked. * Return 0 if permission is granted. * @inode_symlink: * Check the permission to create a symbolic link to a file. * @dir contains the inode structure of parent directory of * the symbolic link. * @dentry contains the dentry structure of the symbolic link. * @old_name contains the pathname of file. * Return 0 if permission is granted. * @path_symlink: * Check the permission to create a symbolic link to a file. * @dir contains the path structure of parent directory of * the symbolic link. * @dentry contains the dentry structure of the symbolic link. * @old_name contains the pathname of file. * Return 0 if permission is granted. * @inode_mkdir: * Check permissions to create a new directory in the existing directory * associated with inode structure @dir. * @dir contains the inode structure of parent of the directory * to be created. * @dentry contains the dentry structure of new directory. * @mode contains the mode of new directory. * Return 0 if permission is granted. * @path_mkdir: * Check permissions to create a new directory in the existing directory * associated with path structure @path. * @dir contains the path structure of parent of the directory * to be created. * @dentry contains the dentry structure of new directory. * @mode contains the mode of new directory. * Return 0 if permission is granted. * @inode_rmdir: * Check the permission to remove a directory. * @dir contains the inode structure of parent of the directory * to be removed. * @dentry contains the dentry structure of directory to be removed. * Return 0 if permission is granted. * @path_rmdir: * Check the permission to remove a directory. * @dir contains the path structure of parent of the directory to be * removed. * @dentry contains the dentry structure of directory to be removed. * Return 0 if permission is granted. * @inode_mknod: * Check permissions when creating a special file (or a socket or a fifo * file created via the mknod system call). Note that if mknod operation * is being done for a regular file, then the create hook will be called * and not this hook. * @dir contains the inode structure of parent of the new file. * @dentry contains the dentry structure of the new file. * @mode contains the mode of the new file. * @dev contains the device number. * Return 0 if permission is granted. * @path_mknod: * Check permissions when creating a file. Note that this hook is called * even if mknod operation is being done for a regular file. * @dir contains the path structure of parent of the new file. * @dentry contains the dentry structure of the new file. * @mode contains the mode of the new file. * @dev contains the undecoded device number. Use new_decode_dev() to get * the decoded device number. * Return 0 if permission is granted. * @inode_rename: * Check for permission to rename a file or directory. * @old_dir contains the inode structure for parent of the old link. * @old_dentry contains the dentry structure of the old link. * @new_dir contains the inode structure for parent of the new link. * @new_dentry contains the dentry structure of the new link. * Return 0 if permission is granted. * @path_rename: * Check for permission to rename a file or directory. * @old_dir contains the path structure for parent of the old link. * @old_dentry contains the dentry structure of the old link. * @new_dir contains the path structure for parent of the new link. * @new_dentry contains the dentry structure of the new link. * Return 0 if permission is granted. * @path_chmod: * Check for permission to change a mode of the file @path. The new * mode is specified in @mode. * @path contains the path structure of the file to change the mode. * @mode contains the new DAC's permission, which is a bitmask of * constants from <include/uapi/linux/stat.h> * Return 0 if permission is granted. * @path_chown: * Check for permission to change owner/group of a file or directory. * @path contains the path structure. * @uid contains new owner's ID. * @gid contains new group's ID. * Return 0 if permission is granted. * @path_chroot: * Check for permission to change root directory. * @path contains the path structure. * Return 0 if permission is granted. * @path_notify: * Check permissions before setting a watch on events as defined by @mask, * on an object at @path, whose type is defined by @obj_type. * @inode_readlink: * Check the permission to read the symbolic link. * @dentry contains the dentry structure for the file link. * Return 0 if permission is granted. * @inode_follow_link: * Check permission to follow a symbolic link when looking up a pathname. * @dentry contains the dentry structure for the link. * @inode contains the inode, which itself is not stable in RCU-walk * @rcu indicates whether we are in RCU-walk mode. * Return 0 if permission is granted. * @inode_permission: * Check permission before accessing an inode. This hook is called by the * existing Linux permission function, so a security module can use it to * provide additional checking for existing Linux permission checks. * Notice that this hook is called when a file is opened (as well as many * other operations), whereas the file_security_ops permission hook is * called when the actual read/write operations are performed. * @inode contains the inode structure to check. * @mask contains the permission mask. * Return 0 if permission is granted. * @inode_setattr: * Check permission before setting file attributes. Note that the kernel * call to notify_change is performed from several locations, whenever * file attributes change (such as when a file is truncated, chown/chmod * operations, transferring disk quotas, etc). * @dentry contains the dentry structure for the file. * @attr is the iattr structure containing the new file attributes. * Return 0 if permission is granted. * @path_truncate: * Check permission before truncating a file. * @path contains the path structure for the file. * Return 0 if permission is granted. * @inode_getattr: * Check permission before obtaining file attributes. * @path contains the path structure for the file. * Return 0 if permission is granted. * @inode_setxattr: * Check permission before setting the extended attributes * @value identified by @name for @dentry. * Return 0 if permission is granted. * @inode_post_setxattr: * Update inode security field after successful setxattr operation. * @value identified by @name for @dentry. * @inode_getxattr: * Check permission before obtaining the extended attributes * identified by @name for @dentry. * Return 0 if permission is granted. * @inode_listxattr: * Check permission before obtaining the list of extended attribute * names for @dentry. * Return 0 if permission is granted. * @inode_removexattr: * Check permission before removing the extended attribute * identified by @name for @dentry. * Return 0 if permission is granted. * @inode_getsecurity: * Retrieve a copy of the extended attribute representation of the * security label associated with @name for @inode via @buffer. Note that * @name is the remainder of the attribute name after the security prefix * has been removed. @alloc is used to specify of the call should return a * value via the buffer or just the value length Return size of buffer on * success. * @inode_setsecurity: * Set the security label associated with @name for @inode from the * extended attribute value @value. @size indicates the size of the * @value in bytes. @flags may be XATTR_CREATE, XATTR_REPLACE, or 0. * Note that @name is the remainder of the attribute name after the * security. prefix has been removed. * Return 0 on success. * @inode_listsecurity: * Copy the extended attribute names for the security labels * associated with @inode into @buffer. The maximum size of @buffer * is specified by @buffer_size. @buffer may be NULL to request * the size of the buffer required. * Returns number of bytes used/required on success. * @inode_need_killpriv: * Called when an inode has been changed. * @dentry is the dentry being changed. * Return <0 on error to abort the inode change operation. * Return 0 if inode_killpriv does not need to be called. * Return >0 if inode_killpriv does need to be called. * @inode_killpriv: * The setuid bit is being removed. Remove similar security labels. * Called with the dentry->d_inode->i_mutex held. * @mnt_userns: user namespace of the mount * @dentry is the dentry being changed. * Return 0 on success. If error is returned, then the operation * causing setuid bit removal is failed. * @inode_getsecid: * Get the secid associated with the node. * @inode contains a pointer to the inode. * @secid contains a pointer to the location where result will be saved. * In case of failure, @secid will be set to zero. * @inode_copy_up: * A file is about to be copied up from lower layer to upper layer of * overlay filesystem. Security module can prepare a set of new creds * and modify as need be and return new creds. Caller will switch to * new creds temporarily to create new file and release newly allocated * creds. * @src indicates the union dentry of file that is being copied up. * @new pointer to pointer to return newly allocated creds. * Returns 0 on success or a negative error code on error. * @inode_copy_up_xattr: * Filter the xattrs being copied up when a unioned file is copied * up from a lower layer to the union/overlay layer. * @name indicates the name of the xattr. * Returns 0 to accept the xattr, 1 to discard the xattr, -EOPNOTSUPP if * security module does not know about attribute or a negative error code * to abort the copy up. Note that the caller is responsible for reading * and writing the xattrs as this hook is merely a filter. * @d_instantiate: * Fill in @inode security information for a @dentry if allowed. * @getprocattr: * Read attribute @name for process @p and store it into @value if allowed. * @setprocattr: * Write (set) attribute @name to @value, size @size if allowed. * * Security hooks for kernfs node operations * * @kernfs_init_security: * Initialize the security context of a newly created kernfs node based * on its own and its parent's attributes. * * @kn_dir the parent kernfs node * @kn the new child kernfs node * * Security hooks for file operations * * @file_permission: * Check file permissions before accessing an open file. This hook is * called by various operations that read or write files. A security * module can use this hook to perform additional checking on these * operations, e.g. to revalidate permissions on use to support privilege * bracketing or policy changes. Notice that this hook is used when the * actual read/write operations are performed, whereas the * inode_security_ops hook is called when a file is opened (as well as * many other operations). * Caveat: Although this hook can be used to revalidate permissions for * various system call operations that read or write files, it does not * address the revalidation of permissions for memory-mapped files. * Security modules must handle this separately if they need such * revalidation. * @file contains the file structure being accessed. * @mask contains the requested permissions. * Return 0 if permission is granted. * @file_alloc_security: * Allocate and attach a security structure to the file->f_security field. * The security field is initialized to NULL when the structure is first * created. * @file contains the file structure to secure. * Return 0 if the hook is successful and permission is granted. * @file_free_security: * Deallocate and free any security structures stored in file->f_security. * @file contains the file structure being modified. * @file_ioctl: * @file contains the file structure. * @cmd contains the operation to perform. * @arg contains the operational arguments. * Check permission for an ioctl operation on @file. Note that @arg * sometimes represents a user space pointer; in other cases, it may be a * simple integer value. When @arg represents a user space pointer, it * should never be used by the security module. * Return 0 if permission is granted. * @mmap_addr : * Check permissions for a mmap operation at @addr. * @addr contains virtual address that will be used for the operation. * Return 0 if permission is granted. * @mmap_file : * Check permissions for a mmap operation. The @file may be NULL, e.g. * if mapping anonymous memory. * @file contains the file structure for file to map (may be NULL). * @reqprot contains the protection requested by the application. * @prot contains the protection that will be applied by the kernel. * @flags contains the operational flags. * Return 0 if permission is granted. * @file_mprotect: * Check permissions before changing memory access permissions. * @vma contains the memory region to modify. * @reqprot contains the protection requested by the application. * @prot contains the protection that will be applied by the kernel. * Return 0 if permission is granted. * @file_lock: * Check permission before performing file locking operations. * Note the hook mediates both flock and fcntl style locks. * @file contains the file structure. * @cmd contains the posix-translated lock operation to perform * (e.g. F_RDLCK, F_WRLCK). * Return 0 if permission is granted. * @file_fcntl: * Check permission before allowing the file operation specified by @cmd * from being performed on the file @file. Note that @arg sometimes * represents a user space pointer; in other cases, it may be a simple * integer value. When @arg represents a user space pointer, it should * never be used by the security module. * @file contains the file structure. * @cmd contains the operation to be performed. * @arg contains the operational arguments. * Return 0 if permission is granted. * @file_set_fowner: * Save owner security information (typically from current->security) in * file->f_security for later use by the send_sigiotask hook. * @file contains the file structure to update. * Return 0 on success. * @file_send_sigiotask: * Check permission for the file owner @fown to send SIGIO or SIGURG to the * process @tsk. Note that this hook is sometimes called from interrupt. * Note that the fown_struct, @fown, is never outside the context of a * struct file, so the file structure (and associated security information) * can always be obtained: container_of(fown, struct file, f_owner) * @tsk contains the structure of task receiving signal. * @fown contains the file owner information. * @sig is the signal that will be sent. When 0, kernel sends SIGIO. * Return 0 if permission is granted. * @file_receive: * This hook allows security modules to control the ability of a process * to receive an open file descriptor via socket IPC. * @file contains the file structure being received. * Return 0 if permission is granted. * @file_open: * Save open-time permission checking state for later use upon * file_permission, and recheck access if anything has changed * since inode_permission. * * Security hooks for task operations. * * @task_alloc: * @task task being allocated. * @clone_flags contains the flags indicating what should be shared. * Handle allocation of task-related resources. * Returns a zero on success, negative values on failure. * @task_free: * @task task about to be freed. * Handle release of task-related resources. (Note that this can be called * from interrupt context.) * @cred_alloc_blank: * @cred points to the credentials. * @gfp indicates the atomicity of any memory allocations. * Only allocate sufficient memory and attach to @cred such that * cred_transfer() will not get ENOMEM. * @cred_free: * @cred points to the credentials. * Deallocate and clear the cred->security field in a set of credentials. * @cred_prepare: * @new points to the new credentials. * @old points to the original credentials. * @gfp indicates the atomicity of any memory allocations. * Prepare a new set of credentials by copying the data from the old set. * @cred_transfer: * @new points to the new credentials. * @old points to the original credentials. * Transfer data from original creds to new creds * @cred_getsecid: * Retrieve the security identifier of the cred structure @c * @c contains the credentials, secid will be placed into @secid. * In case of failure, @secid will be set to zero. * @kernel_act_as: * Set the credentials for a kernel service to act as (subjective context). * @new points to the credentials to be modified. * @secid specifies the security ID to be set * The current task must be the one that nominated @secid. * Return 0 if successful. * @kernel_create_files_as: * Set the file creation context in a set of credentials to be the same as * the objective context of the specified inode. * @new points to the credentials to be modified. * @inode points to the inode to use as a reference. * The current task must be the one that nominated @inode. * Return 0 if successful. * @kernel_module_request: * Ability to trigger the kernel to automatically upcall to userspace for * userspace to load a kernel module with the given name. * @kmod_name name of the module requested by the kernel * Return 0 if successful. * @kernel_load_data: * Load data provided by userspace. * @id kernel load data identifier * @contents if a subsequent @kernel_post_load_data will be called. * Return 0 if permission is granted. * @kernel_post_load_data: * Load data provided by a non-file source (usually userspace buffer). * @buf pointer to buffer containing the data contents. * @size length of the data contents. * @id kernel load data identifier * @description a text description of what was loaded, @id-specific * Return 0 if permission is granted. * This must be paired with a prior @kernel_load_data call that had * @contents set to true. * @kernel_read_file: * Read a file specified by userspace. * @file contains the file structure pointing to the file being read * by the kernel. * @id kernel read file identifier * @contents if a subsequent @kernel_post_read_file will be called. * Return 0 if permission is granted. * @kernel_post_read_file: * Read a file specified by userspace. * @file contains the file structure pointing to the file being read * by the kernel. * @buf pointer to buffer containing the file contents. * @size length of the file contents. * @id kernel read file identifier * This must be paired with a prior @kernel_read_file call that had * @contents set to true. * Return 0 if permission is granted. * @task_fix_setuid: * Update the module's state after setting one or more of the user * identity attributes of the current process. The @flags parameter * indicates which of the set*uid system calls invoked this hook. If * @new is the set of credentials that will be installed. Modifications * should be made to this rather than to @current->cred. * @old is the set of credentials that are being replaces * @flags contains one of the LSM_SETID_* values. * Return 0 on success. * @task_fix_setgid: * Update the module's state after setting one or more of the group * identity attributes of the current process. The @flags parameter * indicates which of the set*gid system calls invoked this hook. * @new is the set of credentials that will be installed. Modifications * should be made to this rather than to @current->cred. * @old is the set of credentials that are being replaced. * @flags contains one of the LSM_SETID_* values. * Return 0 on success. * @task_setpgid: * Check permission before setting the process group identifier of the * process @p to @pgid. * @p contains the task_struct for process being modified. * @pgid contains the new pgid. * Return 0 if permission is granted. * @task_getpgid: * Check permission before getting the process group identifier of the * process @p. * @p contains the task_struct for the process. * Return 0 if permission is granted. * @task_getsid: * Check permission before getting the session identifier of the process * @p. * @p contains the task_struct for the process. * Return 0 if permission is granted. * @task_getsecid_subj: * Retrieve the subjective security identifier of the task_struct in @p * and return it in @secid. Special care must be taken to ensure that @p * is the either the "current" task, or the caller has exclusive access * to @p. * In case of failure, @secid will be set to zero. * @task_getsecid_obj: * Retrieve the objective security identifier of the task_struct in @p * and return it in @secid. * In case of failure, @secid will be set to zero. * * @task_setnice: * Check permission before setting the nice value of @p to @nice. * @p contains the task_struct of process. * @nice contains the new nice value. * Return 0 if permission is granted. * @task_setioprio: * Check permission before setting the ioprio value of @p to @ioprio. * @p contains the task_struct of process. * @ioprio contains the new ioprio value * Return 0 if permission is granted. * @task_getioprio: * Check permission before getting the ioprio value of @p. * @p contains the task_struct of process. * Return 0 if permission is granted. * @task_prlimit: * Check permission before getting and/or setting the resource limits of * another task. * @cred points to the cred structure for the current task. * @tcred points to the cred structure for the target task. * @flags contains the LSM_PRLIMIT_* flag bits indicating whether the * resource limits are being read, modified, or both. * Return 0 if permission is granted. * @task_setrlimit: * Check permission before setting the resource limits of process @p * for @resource to @new_rlim. The old resource limit values can * be examined by dereferencing (p->signal->rlim + resource). * @p points to the task_struct for the target task's group leader. * @resource contains the resource whose limit is being set. * @new_rlim contains the new limits for @resource. * Return 0 if permission is granted. * @task_setscheduler: * Check permission before setting scheduling policy and/or parameters of * process @p. * @p contains the task_struct for process. * Return 0 if permission is granted. * @task_getscheduler: * Check permission before obtaining scheduling information for process * @p. * @p contains the task_struct for process. * Return 0 if permission is granted. * @task_movememory: * Check permission before moving memory owned by process @p. * @p contains the task_struct for process. * Return 0 if permission is granted. * @task_kill: * Check permission before sending signal @sig to @p. @info can be NULL, * the constant 1, or a pointer to a kernel_siginfo structure. If @info is 1 or * SI_FROMKERNEL(info) is true, then the signal should be viewed as coming * from the kernel and should typically be permitted. * SIGIO signals are handled separately by the send_sigiotask hook in * file_security_ops. * @p contains the task_struct for process. * @info contains the signal information. * @sig contains the signal value. * @cred contains the cred of the process where the signal originated, or * NULL if the current task is the originator. * Return 0 if permission is granted. * @task_prctl: * Check permission before performing a process control operation on the * current process. * @option contains the operation. * @arg2 contains a argument. * @arg3 contains a argument. * @arg4 contains a argument. * @arg5 contains a argument. * Return -ENOSYS if no-one wanted to handle this op, any other value to * cause prctl() to return immediately with that value. * @task_to_inode: * Set the security attributes for an inode based on an associated task's * security attributes, e.g. for /proc/pid inodes. * @p contains the task_struct for the task. * @inode contains the inode structure for the inode. * * Security hooks for Netlink messaging. * * @netlink_send: * Save security information for a netlink message so that permission * checking can be performed when the message is processed. The security * information can be saved using the eff_cap field of the * netlink_skb_parms structure. Also may be used to provide fine * grained control over message transmission. * @sk associated sock of task sending the message. * @skb contains the sk_buff structure for the netlink message. * Return 0 if the information was successfully saved and message * is allowed to be transmitted. * * Security hooks for Unix domain networking. * * @unix_stream_connect: * Check permissions before establishing a Unix domain stream connection * between @sock and @other. * @sock contains the sock structure. * @other contains the peer sock structure. * @newsk contains the new sock structure. * Return 0 if permission is granted. * @unix_may_send: * Check permissions before connecting or sending datagrams from @sock to * @other. * @sock contains the socket structure. * @other contains the peer socket structure. * Return 0 if permission is granted. * * The @unix_stream_connect and @unix_may_send hooks were necessary because * Linux provides an alternative to the conventional file name space for Unix * domain sockets. Whereas binding and connecting to sockets in the file name * space is mediated by the typical file permissions (and caught by the mknod * and permission hooks in inode_security_ops), binding and connecting to * sockets in the abstract name space is completely unmediated. Sufficient * control of Unix domain sockets in the abstract name space isn't possible * using only the socket layer hooks, since we need to know the actual target * socket, which is not looked up until we are inside the af_unix code. * * Security hooks for socket operations. * * @socket_create: * Check permissions prior to creating a new socket. * @family contains the requested protocol family. * @type contains the requested communications type. * @protocol contains the requested protocol. * @kern set to 1 if a kernel socket. * Return 0 if permission is granted. * @socket_post_create: * This hook allows a module to update or allocate a per-socket security * structure. Note that the security field was not added directly to the * socket structure, but rather, the socket security information is stored * in the associated inode. Typically, the inode alloc_security hook will * allocate and attach security information to * SOCK_INODE(sock)->i_security. This hook may be used to update the * SOCK_INODE(sock)->i_security field with additional information that * wasn't available when the inode was allocated. * @sock contains the newly created socket structure. * @family contains the requested protocol family. * @type contains the requested communications type. * @protocol contains the requested protocol. * @kern set to 1 if a kernel socket. * @socket_socketpair: * Check permissions before creating a fresh pair of sockets. * @socka contains the first socket structure. * @sockb contains the second socket structure. * Return 0 if permission is granted and the connection was established. * @socket_bind: * Check permission before socket protocol layer bind operation is * performed and the socket @sock is bound to the address specified in the * @address parameter. * @sock contains the socket structure. * @address contains the address to bind to. * @addrlen contains the length of address. * Return 0 if permission is granted. * @socket_connect: * Check permission before socket protocol layer connect operation * attempts to connect socket @sock to a remote address, @address. * @sock contains the socket structure. * @address contains the address of remote endpoint. * @addrlen contains the length of address. * Return 0 if permission is granted. * @socket_listen: * Check permission before socket protocol layer listen operation. * @sock contains the socket structure. * @backlog contains the maximum length for the pending connection queue. * Return 0 if permission is granted. * @socket_accept: * Check permission before accepting a new connection. Note that the new * socket, @newsock, has been created and some information copied to it, * but the accept operation has not actually been performed. * @sock contains the listening socket structure. * @newsock contains the newly created server socket for connection. * Return 0 if permission is granted. * @socket_sendmsg: * Check permission before transmitting a message to another socket. * @sock contains the socket structure. * @msg contains the message to be transmitted. * @size contains the size of message. * Return 0 if permission is granted. * @socket_recvmsg: * Check permission before receiving a message from a socket. * @sock contains the socket structure. * @msg contains the message structure. * @size contains the size of message structure. * @flags contains the operational flags. * Return 0 if permission is granted. * @socket_getsockname: * Check permission before the local address (name) of the socket object * @sock is retrieved. * @sock contains the socket structure. * Return 0 if permission is granted. * @socket_getpeername: * Check permission before the remote address (name) of a socket object * @sock is retrieved. * @sock contains the socket structure. * Return 0 if permission is granted. * @socket_getsockopt: * Check permissions before retrieving the options associated with socket * @sock. * @sock contains the socket structure. * @level contains the protocol level to retrieve option from. * @optname contains the name of option to retrieve. * Return 0 if permission is granted. * @socket_setsockopt: * Check permissions before setting the options associated with socket * @sock. * @sock contains the socket structure. * @level contains the protocol level to set options for. * @optname contains the name of the option to set. * Return 0 if permission is granted. * @socket_shutdown: * Checks permission before all or part of a connection on the socket * @sock is shut down. * @sock contains the socket structure. * @how contains the flag indicating how future sends and receives * are handled. * Return 0 if permission is granted. * @socket_sock_rcv_skb: * Check permissions on incoming network packets. This hook is distinct * from Netfilter's IP input hooks since it is the first time that the * incoming sk_buff @skb has been associated with a particular socket, @sk. * Must not sleep inside this hook because some callers hold spinlocks. * @sk contains the sock (not socket) associated with the incoming sk_buff. * @skb contains the incoming network data. * @socket_getpeersec_stream: * This hook allows the security module to provide peer socket security * state for unix or connected tcp sockets to userspace via getsockopt * SO_GETPEERSEC. For tcp sockets this can be meaningful if the * socket is associated with an ipsec SA. * @sock is the local socket. * @optval userspace memory where the security state is to be copied. * @optlen userspace int where the module should copy the actual length * of the security state. * @len as input is the maximum length to copy to userspace provided * by the caller. * Return 0 if all is well, otherwise, typical getsockopt return * values. * @socket_getpeersec_dgram: * This hook allows the security module to provide peer socket security * state for udp sockets on a per-packet basis to userspace via * getsockopt SO_GETPEERSEC. The application must first have indicated * the IP_PASSSEC option via getsockopt. It can then retrieve the * security state returned by this hook for a packet via the SCM_SECURITY * ancillary message type. * @sock contains the peer socket. May be NULL. * @skb is the sk_buff for the packet being queried. May be NULL. * @secid pointer to store the secid of the packet. * Return 0 on success, error on failure. * @sk_alloc_security: * Allocate and attach a security structure to the sk->sk_security field, * which is used to copy security attributes between local stream sockets. * @sk_free_security: * Deallocate security structure. * @sk_clone_security: * Clone/copy security structure. * @sk_getsecid: * Retrieve the LSM-specific secid for the sock to enable caching * of network authorizations. * @sock_graft: * Sets the socket's isec sid to the sock's sid. * @inet_conn_request: * Sets the openreq's sid to socket's sid with MLS portion taken * from peer sid. * @inet_csk_clone: * Sets the new child socket's sid to the openreq sid. * @inet_conn_established: * Sets the connection's peersid to the secmark on skb. * @secmark_relabel_packet: * check if the process should be allowed to relabel packets to * the given secid * @secmark_refcount_inc: * tells the LSM to increment the number of secmark labeling rules loaded * @secmark_refcount_dec: * tells the LSM to decrement the number of secmark labeling rules loaded * @req_classify_flow: * Sets the flow's sid to the openreq sid. * @tun_dev_alloc_security: * This hook allows a module to allocate a security structure for a TUN * device. * @security pointer to a security structure pointer. * Returns a zero on success, negative values on failure. * @tun_dev_free_security: * This hook allows a module to free the security structure for a TUN * device. * @security pointer to the TUN device's security structure * @tun_dev_create: * Check permissions prior to creating a new TUN device. * @tun_dev_attach_queue: * Check permissions prior to attaching to a TUN device queue. * @security pointer to the TUN device's security structure. * @tun_dev_attach: * This hook can be used by the module to update any security state * associated with the TUN device's sock structure. * @sk contains the existing sock structure. * @security pointer to the TUN device's security structure. * @tun_dev_open: * This hook can be used by the module to update any security state * associated with the TUN device's security structure. * @security pointer to the TUN devices's security structure. * * Security hooks for SCTP * * @sctp_assoc_request: * Passes the @ep and @chunk->skb of the association INIT packet to * the security module. * @ep pointer to sctp endpoint structure. * @skb pointer to skbuff of association packet. * Return 0 on success, error on failure. * @sctp_bind_connect: * Validiate permissions required for each address associated with sock * @sk. Depending on @optname, the addresses will be treated as either * for a connect or bind service. The @addrlen is calculated on each * ipv4 and ipv6 address using sizeof(struct sockaddr_in) or * sizeof(struct sockaddr_in6). * @sk pointer to sock structure. * @optname name of the option to validate. * @address list containing one or more ipv4/ipv6 addresses. * @addrlen total length of address(s). * Return 0 on success, error on failure. * @sctp_sk_clone: * Called whenever a new socket is created by accept(2) (i.e. a TCP * style socket) or when a socket is 'peeled off' e.g userspace * calls sctp_peeloff(3). * @ep pointer to current sctp endpoint structure. * @sk pointer to current sock structure. * @sk pointer to new sock structure. * * Security hooks for Infiniband * * @ib_pkey_access: * Check permission to access a pkey when modifing a QP. * @subnet_prefix the subnet prefix of the port being used. * @pkey the pkey to be accessed. * @sec pointer to a security structure. * @ib_endport_manage_subnet: * Check permissions to send and receive SMPs on a end port. * @dev_name the IB device name (i.e. mlx4_0). * @port_num the port number. * @sec pointer to a security structure. * @ib_alloc_security: * Allocate a security structure for Infiniband objects. * @sec pointer to a security structure pointer. * Returns 0 on success, non-zero on failure * @ib_free_security: * Deallocate an Infiniband security structure. * @sec contains the security structure to be freed. * * Security hooks for XFRM operations. * * @xfrm_policy_alloc_security: * @ctxp is a pointer to the xfrm_sec_ctx being added to Security Policy * Database used by the XFRM system. * @sec_ctx contains the security context information being provided by * the user-level policy update program (e.g., setkey). * Allocate a security structure to the xp->security field; the security * field is initialized to NULL when the xfrm_policy is allocated. * Return 0 if operation was successful (memory to allocate, legal context) * @gfp is to specify the context for the allocation * @xfrm_policy_clone_security: * @old_ctx contains an existing xfrm_sec_ctx. * @new_ctxp contains a new xfrm_sec_ctx being cloned from old. * Allocate a security structure in new_ctxp that contains the * information from the old_ctx structure. * Return 0 if operation was successful (memory to allocate). * @xfrm_policy_free_security: * @ctx contains the xfrm_sec_ctx * Deallocate xp->security. * @xfrm_policy_delete_security: * @ctx contains the xfrm_sec_ctx. * Authorize deletion of xp->security. * @xfrm_state_alloc: * @x contains the xfrm_state being added to the Security Association * Database by the XFRM system. * @sec_ctx contains the security context information being provided by * the user-level SA generation program (e.g., setkey or racoon). * Allocate a security structure to the x->security field; the security * field is initialized to NULL when the xfrm_state is allocated. Set the * context to correspond to sec_ctx. Return 0 if operation was successful * (memory to allocate, legal context). * @xfrm_state_alloc_acquire: * @x contains the xfrm_state being added to the Security Association * Database by the XFRM system. * @polsec contains the policy's security context. * @secid contains the secid from which to take the mls portion of the * context. * Allocate a security structure to the x->security field; the security * field is initialized to NULL when the xfrm_state is allocated. Set the * context to correspond to secid. Return 0 if operation was successful * (memory to allocate, legal context). * @xfrm_state_free_security: * @x contains the xfrm_state. * Deallocate x->security. * @xfrm_state_delete_security: * @x contains the xfrm_state. * Authorize deletion of x->security. * @xfrm_policy_lookup: * @ctx contains the xfrm_sec_ctx for which the access control is being * checked. * @fl_secid contains the flow security label that is used to authorize * access to the policy xp. * @dir contains the direction of the flow (input or output). * Check permission when a flow selects a xfrm_policy for processing * XFRMs on a packet. The hook is called when selecting either a * per-socket policy or a generic xfrm policy. * Return 0 if permission is granted, -ESRCH otherwise, or -errno * on other errors. * @xfrm_state_pol_flow_match: * @x contains the state to match. * @xp contains the policy to check for a match. * @flic contains the flowi_common struct to check for a match. * Return 1 if there is a match. * @xfrm_decode_session: * @skb points to skb to decode. * @secid points to the flow key secid to set. * @ckall says if all xfrms used should be checked for same secid. * Return 0 if ckall is zero or all xfrms used have the same secid. * * Security hooks affecting all Key Management operations * * @key_alloc: * Permit allocation of a key and assign security data. Note that key does * not have a serial number assigned at this point. * @key points to the key. * @flags is the allocation flags * Return 0 if permission is granted, -ve error otherwise. * @key_free: * Notification of destruction; free security data. * @key points to the key. * No return value. * @key_permission: * See whether a specific operational right is granted to a process on a * key. * @key_ref refers to the key (key pointer + possession attribute bit). * @cred points to the credentials to provide the context against which to * evaluate the security data on the key. * @perm describes the combination of permissions required of this key. * Return 0 if permission is granted, -ve error otherwise. * @key_getsecurity: * Get a textual representation of the security context attached to a key * for the purposes of honouring KEYCTL_GETSECURITY. This function * allocates the storage for the NUL-terminated string and the caller * should free it. * @key points to the key to be queried. * @_buffer points to a pointer that should be set to point to the * resulting string (if no label or an error occurs). * Return the length of the string (including terminating NUL) or -ve if * an error. * May also return 0 (and a NULL buffer pointer) if there is no label. * * Security hooks affecting all System V IPC operations. * * @ipc_permission: * Check permissions for access to IPC * @ipcp contains the kernel IPC permission structure * @flag contains the desired (requested) permission set * Return 0 if permission is granted. * @ipc_getsecid: * Get the secid associated with the ipc object. * @ipcp contains the kernel IPC permission structure. * @secid contains a pointer to the location where result will be saved. * In case of failure, @secid will be set to zero. * * Security hooks for individual messages held in System V IPC message queues * * @msg_msg_alloc_security: * Allocate and attach a security structure to the msg->security field. * The security field is initialized to NULL when the structure is first * created. * @msg contains the message structure to be modified. * Return 0 if operation was successful and permission is granted. * @msg_msg_free_security: * Deallocate the security structure for this message. * @msg contains the message structure to be modified. * * Security hooks for System V IPC Message Queues * * @msg_queue_alloc_security: * Allocate and attach a security structure to the * @perm->security field. The security field is initialized to * NULL when the structure is first created. * @perm contains the IPC permissions of the message queue. * Return 0 if operation was successful and permission is granted. * @msg_queue_free_security: * Deallocate security field @perm->security for the message queue. * @perm contains the IPC permissions of the message queue. * @msg_queue_associate: * Check permission when a message queue is requested through the * msgget system call. This hook is only called when returning the * message queue identifier for an existing message queue, not when a * new message queue is created. * @perm contains the IPC permissions of the message queue. * @msqflg contains the operation control flags. * Return 0 if permission is granted. * @msg_queue_msgctl: * Check permission when a message control operation specified by @cmd * is to be performed on the message queue with permissions @perm. * The @perm may be NULL, e.g. for IPC_INFO or MSG_INFO. * @perm contains the IPC permissions of the msg queue. May be NULL. * @cmd contains the operation to be performed. * Return 0 if permission is granted. * @msg_queue_msgsnd: * Check permission before a message, @msg, is enqueued on the message * queue with permissions @perm. * @perm contains the IPC permissions of the message queue. * @msg contains the message to be enqueued. * @msqflg contains operational flags. * Return 0 if permission is granted. * @msg_queue_msgrcv: * Check permission before a message, @msg, is removed from the message * queue. The @target task structure contains a pointer to the * process that will be receiving the message (not equal to the current * process when inline receives are being performed). * @perm contains the IPC permissions of the message queue. * @msg contains the message destination. * @target contains the task structure for recipient process. * @type contains the type of message requested. * @mode contains the operational flags. * Return 0 if permission is granted. * * Security hooks for System V Shared Memory Segments * * @shm_alloc_security: * Allocate and attach a security structure to the @perm->security * field. The security field is initialized to NULL when the structure is * first created. * @perm contains the IPC permissions of the shared memory structure. * Return 0 if operation was successful and permission is granted. * @shm_free_security: * Deallocate the security structure @perm->security for the memory segment. * @perm contains the IPC permissions of the shared memory structure. * @shm_associate: * Check permission when a shared memory region is requested through the * shmget system call. This hook is only called when returning the shared * memory region identifier for an existing region, not when a new shared * memory region is created. * @perm contains the IPC permissions of the shared memory structure. * @shmflg contains the operation control flags. * Return 0 if permission is granted. * @shm_shmctl: * Check permission when a shared memory control operation specified by * @cmd is to be performed on the shared memory region with permissions @perm. * The @perm may be NULL, e.g. for IPC_INFO or SHM_INFO. * @perm contains the IPC permissions of the shared memory structure. * @cmd contains the operation to be performed. * Return 0 if permission is granted. * @shm_shmat: * Check permissions prior to allowing the shmat system call to attach the * shared memory segment with permissions @perm to the data segment of the * calling process. The attaching address is specified by @shmaddr. * @perm contains the IPC permissions of the shared memory structure. * @shmaddr contains the address to attach memory region to. * @shmflg contains the operational flags. * Return 0 if permission is granted. * * Security hooks for System V Semaphores * * @sem_alloc_security: * Allocate and attach a security structure to the @perm->security * field. The security field is initialized to NULL when the structure is * first created. * @perm contains the IPC permissions of the semaphore. * Return 0 if operation was successful and permission is granted. * @sem_free_security: * Deallocate security structure @perm->security for the semaphore. * @perm contains the IPC permissions of the semaphore. * @sem_associate: * Check permission when a semaphore is requested through the semget * system call. This hook is only called when returning the semaphore * identifier for an existing semaphore, not when a new one must be * created. * @perm contains the IPC permissions of the semaphore. * @semflg contains the operation control flags. * Return 0 if permission is granted. * @sem_semctl: * Check permission when a semaphore operation specified by @cmd is to be * performed on the semaphore. The @perm may be NULL, e.g. for * IPC_INFO or SEM_INFO. * @perm contains the IPC permissions of the semaphore. May be NULL. * @cmd contains the operation to be performed. * Return 0 if permission is granted. * @sem_semop: * Check permissions before performing operations on members of the * semaphore set. If the @alter flag is nonzero, the semaphore set * may be modified. * @perm contains the IPC permissions of the semaphore. * @sops contains the operations to perform. * @nsops contains the number of operations to perform. * @alter contains the flag indicating whether changes are to be made. * Return 0 if permission is granted. * * @binder_set_context_mgr: * Check whether @mgr is allowed to be the binder context manager. * @mgr contains the struct cred for the current binder process. * Return 0 if permission is granted. * @binder_transaction: * Check whether @from is allowed to invoke a binder transaction call * to @to. * @from contains the struct cred for the sending process. * @to contains the struct cred for the receiving process. * @binder_transfer_binder: * Check whether @from is allowed to transfer a binder reference to @to. * @from contains the struct cred for the sending process. * @to contains the struct cred for the receiving process. * @binder_transfer_file: * Check whether @from is allowed to transfer @file to @to. * @from contains the struct cred for the sending process. * @file contains the struct file being transferred. * @to contains the struct cred for the receiving process. * * @ptrace_access_check: * Check permission before allowing the current process to trace the * @child process. * Security modules may also want to perform a process tracing check * during an execve in the set_security or apply_creds hooks of * tracing check during an execve in the bprm_set_creds hook of * binprm_security_ops if the process is being traced and its security * attributes would be changed by the execve. * @child contains the task_struct structure for the target process. * @mode contains the PTRACE_MODE flags indicating the form of access. * Return 0 if permission is granted. * @ptrace_traceme: * Check that the @parent process has sufficient permission to trace the * current process before allowing the current process to present itself * to the @parent process for tracing. * @parent contains the task_struct structure for debugger process. * Return 0 if permission is granted. * @capget: * Get the @effective, @inheritable, and @permitted capability sets for * the @target process. The hook may also perform permission checking to * determine if the current process is allowed to see the capability sets * of the @target process. * @target contains the task_struct structure for target process. * @effective contains the effective capability set. * @inheritable contains the inheritable capability set. * @permitted contains the permitted capability set. * Return 0 if the capability sets were successfully obtained. * @capset: * Set the @effective, @inheritable, and @permitted capability sets for * the current process. * @new contains the new credentials structure for target process. * @old contains the current credentials structure for target process. * @effective contains the effective capability set. * @inheritable contains the inheritable capability set. * @permitted contains the permitted capability set. * Return 0 and update @new if permission is granted. * @capable: * Check whether the @tsk process has the @cap capability in the indicated * credentials. * @cred contains the credentials to use. * @ns contains the user namespace we want the capability in * @cap contains the capability <include/linux/capability.h>. * @opts contains options for the capable check <include/linux/security.h> * Return 0 if the capability is granted for @tsk. * @quotactl: * Check whether the quotactl syscall is allowed for this @sb. * @quota_on: * Check whether QUOTAON is allowed for this @dentry. * @syslog: * Check permission before accessing the kernel message ring or changing * logging to the console. * See the syslog(2) manual page for an explanation of the @type values. * @type contains the SYSLOG_ACTION_* constant from <include/linux/syslog.h> * Return 0 if permission is granted. * @settime: * Check permission to change the system time. * struct timespec64 is defined in <include/linux/time64.h> and timezone * is defined in <include/linux/time.h> * @ts contains new time * @tz contains new timezone * Return 0 if permission is granted. * @vm_enough_memory: * Check permissions for allocating a new virtual mapping. * @mm contains the mm struct it is being added to. * @pages contains the number of pages. * Return 0 if permission is granted. * * @getprocattr: * Provide the named process attribute for display in special files in * the /proc/.../attr directory. Attribute naming and the data displayed * is at the discretion of the security modules. The exception is the * "context" attribute, which will contain the security context of the * task as a nul terminated text string without trailing whitespace. * @ismaclabel: * Check if the extended attribute specified by @name * represents a MAC label. Returns 1 if name is a MAC * attribute otherwise returns 0. * @name full extended attribute name to check against * LSM as a MAC label. * * @secid_to_secctx: * Convert secid to security context. If secdata is NULL the length of * the result will be returned in seclen, but no secdata will be returned. * This does mean that the length could change between calls to check the * length and the next call which actually allocates and returns the * secdata. * @secid contains the security ID. * @secdata contains the pointer that stores the converted security * context. * @seclen pointer which contains the length of the data * @secctx_to_secid: * Convert security context to secid. * @secid contains the pointer to the generated security ID. * @secdata contains the security context. * * @release_secctx: * Release the security context. * @secdata contains the security context. * @seclen contains the length of the security context. * * Security hooks for Audit * * @audit_rule_init: * Allocate and initialize an LSM audit rule structure. * @field contains the required Audit action. * Fields flags are defined in <include/linux/audit.h> * @op contains the operator the rule uses. * @rulestr contains the context where the rule will be applied to. * @lsmrule contains a pointer to receive the result. * Return 0 if @lsmrule has been successfully set, * -EINVAL in case of an invalid rule. * * @audit_rule_known: * Specifies whether given @krule contains any fields related to * current LSM. * @krule contains the audit rule of interest. * Return 1 in case of relation found, 0 otherwise. * * @audit_rule_match: * Determine if given @secid matches a rule previously approved * by @audit_rule_known. * @secid contains the security id in question. * @field contains the field which relates to current LSM. * @op contains the operator that will be used for matching. * @lrule points to the audit rule that will be checked against. * Return 1 if secid matches the rule, 0 if it does not, -ERRNO on failure. * * @audit_rule_free: * Deallocate the LSM audit rule structure previously allocated by * audit_rule_init. * @lsmrule contains the allocated rule * * @inode_invalidate_secctx: * Notify the security module that it must revalidate the security context * of an inode. * * @inode_notifysecctx: * Notify the security module of what the security context of an inode * should be. Initializes the incore security context managed by the * security module for this inode. Example usage: NFS client invokes * this hook to initialize the security context in its incore inode to the * value provided by the server for the file when the server returned the * file's attributes to the client. * Must be called with inode->i_mutex locked. * @inode we wish to set the security context of. * @ctx contains the string which we wish to set in the inode. * @ctxlen contains the length of @ctx. * * @inode_setsecctx: * Change the security context of an inode. Updates the * incore security context managed by the security module and invokes the * fs code as needed (via __vfs_setxattr_noperm) to update any backing * xattrs that represent the context. Example usage: NFS server invokes * this hook to change the security context in its incore inode and on the * backing filesystem to a value provided by the client on a SETATTR * operation. * Must be called with inode->i_mutex locked. * @dentry contains the inode we wish to set the security context of. * @ctx contains the string which we wish to set in the inode. * @ctxlen contains the length of @ctx. * * @inode_getsecctx: * On success, returns 0 and fills out @ctx and @ctxlen with the security * context for the given @inode. * @inode we wish to get the security context of. * @ctx is a pointer in which to place the allocated security context. * @ctxlen points to the place to put the length of @ctx. * * Security hooks for the general notification queue: * * @post_notification: * Check to see if a watch notification can be posted to a particular * queue. * @w_cred: The credentials of the whoever set the watch. * @cred: The event-triggerer's credentials * @n: The notification being posted * * @watch_key: * Check to see if a process is allowed to watch for event notifications * from a key or keyring. * @key: The key to watch. * * Security hooks for using the eBPF maps and programs functionalities through * eBPF syscalls. * * @bpf: * Do a initial check for all bpf syscalls after the attribute is copied * into the kernel. The actual security module can implement their own * rules to check the specific cmd they need. * * @bpf_map: * Do a check when the kernel generate and return a file descriptor for * eBPF maps. * * @map: bpf map that we want to access * @mask: the access flags * * @bpf_prog: * Do a check when the kernel generate and return a file descriptor for * eBPF programs. * * @prog: bpf prog that userspace want to use. * * @bpf_map_alloc_security: * Initialize the security field inside bpf map. * * @bpf_map_free_security: * Clean up the security information stored inside bpf map. * * @bpf_prog_alloc_security: * Initialize the security field inside bpf program. * * @bpf_prog_free_security: * Clean up the security information stored inside bpf prog. * * @locked_down: * Determine whether a kernel feature that potentially enables arbitrary * code execution in kernel space should be permitted. * * @what: kernel feature being accessed * * @lock_kernel_down * Put the kernel into lock-down mode. * * @where: Where the lock-down is originating from (e.g. command line option) * @level: The lock-down level (can only increase) * * Security hooks for perf events * * @perf_event_open: * Check whether the @type of perf_event_open syscall is allowed. * @perf_event_alloc: * Allocate and save perf_event security info. * @perf_event_free: * Release (free) perf_event security info. * @perf_event_read: * Read perf_event security info if allowed. * @perf_event_write: * Write perf_event security info if allowed. */ union security_list_options { #define LSM_HOOK(RET, DEFAULT, NAME, ...) RET (*NAME)(__VA_ARGS__); #include "lsm_hook_defs.h" #undef LSM_HOOK }; struct security_hook_heads { #define LSM_HOOK(RET, DEFAULT, NAME, ...) struct hlist_head NAME; #include "lsm_hook_defs.h" #undef LSM_HOOK } __randomize_layout; /* * Information that identifies a security module. */ struct lsm_id { const char *lsm; /* Name of the LSM */ int slot; /* Slot in lsmblob if one is allocated */ }; /* * Security module hook list structure. * For use with generic list macros for common operations. */ struct security_hook_list { struct hlist_node list; struct hlist_head *head; union security_list_options hook; struct lsm_id *lsmid; } __randomize_layout; /* * Security blob size or offset data. */ struct lsm_blob_sizes { int lbs_cred; int lbs_file; int lbs_inode; int lbs_superblock; int lbs_sock; int lbs_ipc; int lbs_msg_msg; int lbs_task; }; /* * LSM_RET_VOID is used as the default value in LSM_HOOK definitions for void * LSM hooks (in include/linux/lsm_hook_defs.h). */ #define LSM_RET_VOID ((void) 0) /* * Initializing a security_hook_list structure takes * up a lot of space in a source file. This macro takes * care of the common case and reduces the amount of * text involved. */ #define LSM_HOOK_INIT(HEAD, HOOK) \ { .head = &security_hook_heads.HEAD, .hook = { .HEAD = HOOK } } extern struct security_hook_heads security_hook_heads; extern char *lsm_names; extern void security_add_hooks(struct security_hook_list *hooks, int count, struct lsm_id *lsmid); #define LSM_FLAG_LEGACY_MAJOR BIT(0) #define LSM_FLAG_EXCLUSIVE BIT(1) enum lsm_order { LSM_ORDER_FIRST = -1, /* This is only for capabilities. */ LSM_ORDER_MUTABLE = 0, }; struct lsm_info { const char *name; /* Required. */ enum lsm_order order; /* Optional: default is LSM_ORDER_MUTABLE */ unsigned long flags; /* Optional: flags describing LSM */ int *enabled; /* Optional: controlled by CONFIG_LSM */ int (*init)(void); /* Required. */ struct lsm_blob_sizes *blobs; /* Optional: for blob sharing. */ }; extern struct lsm_info __start_lsm_info[], __end_lsm_info[]; extern struct lsm_info __start_early_lsm_info[], __end_early_lsm_info[]; #define DEFINE_LSM(lsm) \ static struct lsm_info __lsm_##lsm \ __used __section(".lsm_info.init") \ __aligned(sizeof(unsigned long)) #define DEFINE_EARLY_LSM(lsm) \ static struct lsm_info __early_lsm_##lsm \ __used __section(".early_lsm_info.init") \ __aligned(sizeof(unsigned long)) #ifdef CONFIG_SECURITY_SELINUX_DISABLE /* * Assuring the safety of deleting a security module is up to * the security module involved. This may entail ordering the * module's hook list in a particular way, refusing to disable * the module once a policy is loaded or any number of other * actions better imagined than described. * * The name of the configuration option reflects the only module * that currently uses the mechanism. Any developer who thinks * disabling their module is a good idea needs to be at least as * careful as the SELinux team. */ static inline void security_delete_hooks(struct security_hook_list *hooks, int count) { int i; for (i = 0; i < count; i++) hlist_del_rcu(&hooks[i].list); } #endif /* CONFIG_SECURITY_SELINUX_DISABLE */ /* Currently required to handle SELinux runtime hook disable. */ #ifdef CONFIG_SECURITY_WRITABLE_HOOKS #define __lsm_ro_after_init #else #define __lsm_ro_after_init __ro_after_init #endif /* CONFIG_SECURITY_WRITABLE_HOOKS */ extern int lsm_inode_alloc(struct inode *inode); /** * lsm_task_display - the "display" LSM for this task * @task: The task to report on * * Returns the task's display LSM slot. */ static inline int lsm_task_display(struct task_struct *task) { #ifdef CONFIG_SECURITY int *display = task->security; if (display) return *display; #endif return LSMBLOB_INVALID; } /* Same as lsm_task_display(), using struct cred as input */ static inline int lsm_cred_display(struct cred *cred) { #ifdef CONFIG_SECURITY int *display = cred->security; if (display) return *display; #endif return LSMBLOB_INVALID; } #endif /* ! __LINUX_LSM_HOOKS_H */
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