android -/system 文件夹不可装载 : mount: '/system' not in/proc/mounts

Question

我正在尝试按照本教程进行操作:https://ivrodriguez.com/installing-self-signed-certificates-on-android/

当我到达尝试将 /system 重新挂载为可写的步骤时，我遇到了问题。有人可以帮我弄清楚出了什么问题吗？或者我接下来的故障排除步骤应该是什么？

提前谢谢你。

以下是我从我的基本 Linux 经验中能够看到的内容。

$ /Users/me/Library/Android/sdk/platform-tools/adb devices
List of devices attached
emulator-5554   device

$ /Users/me/Library/Android/sdk/platform-tools/adb -s emulator-5554 shell
generic_x86:/ $ su
generic_x86:/ # mount -o rw,remount /system                 
mount: '/system' not in /proc/mounts

似乎 /system 不存在于 /proc/mounts 中(但我对 Android 文件挂载的了解还不够，不知道该怎么做):

generic_x86:/ # cat /proc/mounts | grep system
# nothing

generic_x86:/ # cat /proc/mounts       
tmpfs /dev tmpfs rw,seclabel,nosuid,relatime,mode=755 0 0                                                                               
devpts /dev/pts devpts rw,seclabel,relatime,mode=600,ptmxmode=000 0 0
proc /proc proc rw,relatime,gid=3009,hidepid=2 0 0
sysfs /sys sysfs rw,seclabel,relatime 0 0
selinuxfs /sys/fs/selinux selinuxfs rw,relatime 0 0
tmpfs /mnt tmpfs rw,seclabel,nosuid,nodev,noexec,relatime,mode=755,gid=1000 0 0
tmpfs /apex tmpfs rw,seclabel,nosuid,nodev,noexec,relatime,mode=755 0 0
/dev/block/dm-2 / ext4 ro,seclabel,nodev,relatime,block_validity,delalloc,barrier,user_xattr 0 0
/dev/block/dm-1 /vendor ext4 ro,seclabel,relatime,block_validity,delalloc,barrier,user_xattr 0 0
none /dev/cg2_bpf cgroup2 rw,nosuid,nodev,noexec,relatime 0 0
none /dev/cpuctl cgroup rw,nosuid,nodev,noexec,relatime,cpu 0 0
none /acct cgroup rw,nosuid,nodev,noexec,relatime,cpuacct 0 0
none /dev/cpuset cgroup rw,nosuid,nodev,noexec,relatime,cpuset,noprefix,release_agent=/sbin/cpuset_release_agent 0 0
none /dev/memcg cgroup rw,nosuid,nodev,noexec,relatime,memory 0 0
none /dev/stune cgroup rw,nosuid,nodev,noexec,relatime,schedtune 0 0 
/dev/block/dm-2 /apex/com.android.tzdata@290000000 ext4 ro,seclabel,relatime,block_validity,delalloc,barrier,user_xattr 0 0
/dev/block/dm-2 /apex/com.android.tzdata ext4 ro,seclabel,relatime,block_validity,delalloc,barrier,user_xattr 0 0
/dev/block/dm-2 /apex/com.android.runtime@1 ext4 ro,seclabel,relatime,block_validity,delalloc,barrier,user_xattr 0 0
/dev/block/dm-2 /apex/com.android.runtime ext4 ro,seclabel,relatime,block_validity,delalloc,barrier,user_xattr 0 0
debugfs /sys/kernel/debug debugfs rw,seclabel,relatime,mode=755 0 0
none /config configfs rw,nosuid,nodev,noexec,relatime 0 0
bpf /sys/fs/bpf bpf rw,nosuid,nodev,noexec,relatime 0 0
pstore /sys/fs/pstore pstore rw,seclabel,nosuid,nodev,noexec,relatime 0 0
tracefs /sys/kernel/debug/tracing tracefs rw,seclabel,relatime 0 0
/dev/block/vdc /data ext4 rw,seclabel,nosuid,nodev,noatime,resgid=1065,errors=panic,data=ordered 0 0
tmpfs /storage tmpfs rw,seclabel,nosuid,nodev,noexec,relatime,mode=755,gid=1000 0 0
/dev/block/dm-2 /apex/com.android.conscrypt@290000000 ext4 ro,seclabel,nodev,relatime,block_validity,delalloc,barrier,user_xattr 0 0
/dev/block/dm-2 /apex/com.android.conscrypt ext4 ro,seclabel,nodev,relatime,block_validity,delalloc,barrier,user_xattr 0 0
/dev/block/dm-2 /apex/com.android.resolv@290000000 ext4 ro,seclabel,nodev,relatime,block_validity,delalloc,barrier,user_xattr 0 0
/dev/block/dm-2 /apex/com.android.resolv ext4 ro,seclabel,nodev,relatime,block_validity,delalloc,barrier,user_xattr 0 0
/dev/block/dm-2 /apex/com.android.media.swcodec@290000000 ext4 ro,seclabel,nodev,relatime,block_validity,delalloc,barrier,user_xattr 0 0 
/dev/block/dm-2 /apex/com.android.media.swcodec ext4 ro,seclabel,nodev,relatime,block_validity,delalloc,barrier,user_xattr 0 0
/dev/block/dm-2 /apex/com.android.media@290000000 ext4 ro,seclabel,nodev,relatime,block_validity,delalloc,barrier,user_xattr 0 0
/dev/block/dm-2 /apex/com.android.media ext4 ro,seclabel,nodev,relatime,block_validity,delalloc,barrier,user_xattr 0 0
adb /dev/usb-ffs/adb functionfs rw,relatime 0 0
nsfs /data/vendor/var/run/netns/router nsfs rw 0 0
/data/media /mnt/runtime/default/emulated sdcardfs rw,nosuid,nodev,noexec,noatime,fsuid=1023,fsgid=1023,gid=1015,multiuser,mask=6,derive_gid,default_normal 0 0
/data/media /storage/emulated sdcardfs rw,nosuid,nodev,noexec,noatime,fsuid=1023,fsgid=1023,gid=1015,multiuser,mask=6,derive_gid,default_normal 0 0
/data/media /mnt/runtime/read/emulated sdcardfs rw,nosuid,nodev,noexec,noatime,fsuid=1023,fsgid=1023,gid=9997,multiuser,mask=23,derive_gid,default_normal 0 0
/data/media /mnt/runtime/write/emulated sdcardfs rw,nosuid,nodev,noexec,noatime,fsuid=1023,fsgid=1023,gid=9997,multiuser,mask=7,derive_gid,default_normal 0 0
/data/media /mnt/runtime/full/emulated sdcardfs rw,nosuid,nodev,noexec,noatime,fsuid=1023,fsgid=1023,gid=9997,multiuser,mask=7,derive_gid,default_normal 0 0
/dev/block/vold/public:253,80 /mnt/media_rw/091C-2D02 vfat rw,dirsync,nosuid,nodev,noexec,noatime,uid=1023,gid=1023,fmask=0007,dmask=0007,allow_utime=0020,codepage=437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0
/mnt/media_rw/091C-2D02 /mnt/runtime/default/091C-2D02 sdcardfs rw,nosuid,nodev,noexec,noatime,fsuid=1023,fsgid=1023,gid=1015,mask=6 0 0 
/mnt/media_rw/091C-2D02 /storage/091C-2D02 sdcardfs rw,nosuid,nodev,noexec,noatime,fsuid=1023,fsgid=1023,gid=1015,mask=6 0 0
/mnt/media_rw/091C-2D02 /mnt/runtime/read/091C-2D02 sdcardfs rw,nosuid,nodev,noexec,noatime,fsuid=1023,fsgid=1023,gid=9997,mask=18 0 0
/mnt/media_rw/091C-2D02 /mnt/runtime/write/091C-2D02 sdcardfs rw,nosuid,nodev,noexec,noatime,fsuid=1023,fsgid=1023,gid=9997,mask=18 0 0
/mnt/media_rw/091C-2D02 /mnt/runtime/full/091C-2D02 sdcardfs rw,nosuid,nodev,noexec,noatime,fsuid=1023,fsgid=1023,gid=9997,mask=7 0 0

/system 文件夹确实存在:

generic_x86:/ # ls -la / | grep system
lrw-r--r--   1 root   root      11 2019-09-20 19:50 bin -> /system/bin
drwxrwx---   2 system cache   4096 2019-09-20 19:22 cache
lrw-r--r--   1 root   root      19 2019-09-20 19:50 charger -> /system/bin/charger
drwxrwx--x  45 system system  4096 2019-10-01 15:58 data
lrw-------   1 root   root      23 2019-09-20 19:50 default.prop -> system/etc/prop.default
lrw-r--r--   1 root   root      11 2019-09-20 19:50 etc -> /system/etc
lrwxr-x---   1 root   shell     16 2019-09-20 19:50 init -> /system/bin/init
drwxr-xr-x  12 root   system   260 2019-10-08 10:10 mnt
lrw-r--r--   1 root   root      15 2019-09-20 19:50 product -> /system/product
lrw-r--r--   1 root   root      24 2019-09-20 19:50 product_services -> /system/product_services
drwxr-xr-x  13 root   root    4096 2019-09-20 19:50 system

generic_x86:/ # ls -la /              
total 136
drwxr-xr-x  21 root   root    4096 2019-09-20 19:50 .
drwxr-xr-x  21 root   root    4096 2019-09-20 19:50 ..
dr-xr-xr-x  70 root   root       0 2019-10-08 10:10 acct
-rw-r--r--   1 root   root     723 2019-09-20 19:39 adb_keys
drwxr-xr-x  14 root   root     280 2019-10-08 10:10 apex
lrw-r--r--   1 root   root      11 2019-09-20 19:50 bin -> /system/bin
lrw-r--r--   1 root   root      50 2019-09-20 19:50 bugreports -> /data/user_de/0/com.android.shell/files/bugreports
drwxrwx---   2 system cache   4096 2019-09-20 19:22 cache
lrw-r--r--   1 root   root      19 2019-09-20 19:50 charger -> /system/bin/charger
drwxr-xr-x   4 root   root       0 2019-10-08 10:09 config
lrw-r--r--   1 root   root      17 2019-09-20 19:50 d -> /sys/kernel/debug
drwxrwx--x  45 system system  4096 2019-10-01 15:58 data
drwxr-xr-x   2 root   root    4096 2019-09-20 19:22 debug_ramdisk
lrw-------   1 root   root      23 2019-09-20 19:50 default.prop -> system/etc/prop.default
drwxr-xr-x  19 root   root    1420 2019-10-08 10:10 dev
lrw-r--r--   1 root   root      11 2019-09-20 19:50 etc -> /system/etc
lrwxr-x---   1 root   shell     16 2019-09-20 19:50 init -> /system/bin/init
-rwxr-x---   1 root   shell   1653 2019-09-20 19:22 init.environ.rc
-rwxr-x---   1 root   shell  33152 2019-09-20 19:39 init.rc
-rwxr-x---   1 root   shell   7690 2019-09-20 19:39 init.usb.configfs.rc
-rwxr-x---   1 root   shell   5649 2019-09-20 19:39 init.usb.rc
-rwxr-x---   1 root   shell    563 2019-09-20 19:39 init.zygote32.rc
drwx------   2 root   root   16384 2019-09-20 19:51 lost+found
drwxr-xr-x   2 root   root    4096 2019-09-20 19:22 metadata
drwxr-xr-x  12 root   system   260 2019-10-08 10:10 mnt
drwxr-xr-x   2 root   root    4096 2019-09-20 19:22 odm
drwxr-xr-x   2 root   root    4096 2019-09-20 19:22 oem
dr-xr-xr-x 201 root   root       0 2019-10-08 10:09 proc
lrw-r--r--   1 root   root      15 2019-09-20 19:50 product -> /system/product
lrw-r--r--   1 root   root      24 2019-09-20 19:50 product_services -> /system/product_services
drwxr-xr-x   3 root   root    4096 2019-09-20 19:39 res
drwxr-x---   2 root   shell   4096 2019-09-20 19:22 sbin
lrw-r--r--   1 root   root      21 2019-09-20 19:50 sdcard -> /storage/self/primary
drwxr-xr-x   5 root   root     100 2019-10-08 10:10 storage
dr-xr-xr-x  12 root   root       0 2019-10-08 10:09 sys
drwxr-xr-x  13 root   root    4096 2019-09-20 19:50 system
-rw-r--r--   1 root   root    2608 2019-09-20 19:22 ueventd.rc
drwxr-xr-x   8 root   root    4096 2019-09-20 19:40 vendor

Answer 1

我通过运行带有可写系统磁盘的模拟器(Android 9)通过了这个

例如

emulator.exe -writable-system -no-snapshot -avd virtual_device

其中 virtual_device 是您配置的虚拟设备 (AVD) 的名称

也许这也可以帮助

mount -o rw,remount /