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Add group ID for reading tracefs 

Add AID_READTRACEFS and mount tracefs with gid=AID_READTRACEFS

Bug: 209513178
Bug: 214061655
Test: adb shell ls -l /sys/kernel/tracing/events
Change-Id: Ibbfdf8a4b771bd7520ecbaaf15a1153d6bf0e599
Merged-In: Ibbfdf8a4b771bd7520ecbaaf15a1153d6bf0e599
This commit is contained in:
Kalesh Singh 2021-12-06 16:13:06 -08:00
parent 739f4f5f60
commit 71429a9738
2 changed files with 3 additions and 2 deletions
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1
libcutils/include/private/android_filesystem_config.h
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@ -157,6 +157,7 @@
#define AID_READPROC 3009 /* Allow /proc read access */
#define AID_WAKELOCK 3010 /* Allow system wakelock read/write access */
#define AID_UHID 3011 /* Allow read/write to /dev/uhid node */
#define AID_READTRACEFS 3012 /* Allow tracefs read */
/* The range 5000-5999 is also reserved for vendor partition. */
#define AID_OEM_RESERVED_2_START 5000

4
rootdir/init.rc
View File

@ -78,8 +78,8 @@ on early-init
mkdir /dev/boringssl 0755 root root
mkdir /dev/boringssl/selftest 0755 root root
# Mount tracefs
mount tracefs tracefs /sys/kernel/tracing
# Mount tracefs (with GID=AID_READTRACEFS)
mount tracefs tracefs /sys/kernel/tracing gid=3012
# create sys dirctory
mkdir /dev/sys 0755 system system