https://bugs.kde.org/show_bug.cgi?id=478769
Bug ID: 478769
Summary: Permission denied for sshfs-mounted filesystem with
android 13 / latest kdeconnect app
Classification: Applications
Product: kdeconnect
Version: unspecified
Platform: Android
OS: Android 13.x
Status: REPORTED
Severity: normal
Priority: NOR
Component: android-application
Assignee: albertv...@gmail.com
Reporter: yan...@sembritzki.me
CC: andrew.g.r.hol...@gmail.com
Target Milestone: ---
SUMMARY
Access of files on a kdeconnect mounted filesystem is broken, resulting in
permission denied error.
STEPS TO REPRODUCE
1. Do a fresh install of kdeconnect 1.29.0 on android 13
2. Ensure that MANAGE_EXTERNAL_STORAGE permission is granted to kdeconnect app
3. Pair laptop with android device using kdeconnect or gsconnect
4. Mount android filesystem using `sshfs -p 1739 kdeconnect@192.168.1.40:/ -o
ssh_command='ssh -i ~/.config/gsconnect/private.pem -o IdentitiesOnly=yes -o
PubkeyAcceptedKeyTypes=+ssh-rsa -v' -d -f mountdir`
5. try to list files with `ls mountdir`
OBSERVED RESULT
`ls mountdir` results in `permission denied` (even when using sudo)
We can see from the sshfs command output that the connection is fine:
SSHFS version 3.7.3
executing <ssh> <-i> <~/.config/gsconnect/private.pem> <-o>
<IdentitiesOnly=yes> <-o> <PubkeyAcceptedKeyTypes=+ssh-rsa> <-v> <-x> <-a>
<-oClearAllForwardings=yes> <-oPort=1739> <-2> <kdeconnect@192.168.1.40> <-s>
<sftp>
OpenSSH_9.0p1, OpenSSL 3.0.9 30 May 2023
debug1: Reading configuration data /home/yannik/.ssh/config
debug1: /home/yannik/.ssh/config line 1: Applying options for *
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Reading configuration data /etc/ssh/ssh_config.d/50-redhat.conf
debug1: Reading configuration data
/etc/crypto-policies/back-ends/openssh.config
debug1: configuration requests final Match pass
debug1: re-parsing configuration
debug1: Reading configuration data /home/yannik/.ssh/config
debug1: /home/yannik/.ssh/config line 1: Applying options for *
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Reading configuration data /etc/ssh/ssh_config.d/50-redhat.conf
debug1: Reading configuration data
/etc/crypto-policies/back-ends/openssh.config
debug1: Connecting to 192.168.1.40 [192.168.1.40] port 1739.
debug1: Connection established.
debug1: identity file /home/yannik/.config/gsconnect/private.pem type -1
debug1: identity file /home/yannik/.config/gsconnect/private.pem-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_9.0
debug1: Remote protocol version 2.0, remote software version SSHD-CORE-0.14.0
debug1: compat_banner: no match: SSHD-CORE-0.14.0
debug1: Authenticating to 192.168.1.40:1739 as 'kdeconnect'
debug1: load_hostkeys: fopen /home/yannik/.ssh/known_hosts2: No such file or
directory
debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts: No such file or
directory
debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts2: No such file or
directory
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: ecdh-sha2-nistp384
debug1: kex: host key algorithm: ecdsa-sha2-nistp256
debug1: kex: server->client cipher: aes256-ctr MAC: hmac-sha2-256 compression:
none
debug1: kex: client->server cipher: aes256-ctr MAC: hmac-sha2-256 compression:
none
debug1: kex: ecdh-sha2-nistp384 need=32 dh_need=32
debug1: kex: ecdh-sha2-nistp384 need=32 dh_need=32
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: SSH2_MSG_KEX_ECDH_REPLY received
debug1: Server host key: ecdsa-sha2-nistp256
SHA256:jeQHsA4OYuqtgdzmrUFYWR1wnhyhNyPtH4Ak9p7z8So
debug1: load_hostkeys: fopen /home/yannik/.ssh/known_hosts2: No such file or
directory
debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts: No such file or
directory
debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts2: No such file or
directory
debug1: Host '[192.168.1.40]:1739' is known and matches the ECDSA host key.
debug1: Found key in /home/yannik/.ssh/known_hosts:1993
debug1: rekey out after 4294967296 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: rekey in after 4294967296 blocks
debug1: get_agent_identities: bound agent to hostkey
debug1: get_agent_identities: agent returned 5 keys
debug1: Will attempt key: /home/yannik/.config/gsconnect/private.pem explicit
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue:
password,keyboard-interactive,publickey
debug1: Next authentication method: publickey
debug1: Trying private key: /home/yannik/.config/gsconnect/private.pem
Authenticated to 192.168.1.40 ([192.168.1.40]:1739) using "publickey".
debug1: pkcs11_del_provider: called, provider_id = (null)
debug1: channel 0: new [client-session]
debug1: Entering interactive session.
debug1: pledge: filesystem
debug1: Sending subsystem: sftp
Server version: 3
[00001] LSTAT
[00002] LSTAT
[00001] STATUS 26bytes (10ms)
[00003] LSTAT
[00002] ATTRS 33bytes (14ms)
[00003] STATUS 38bytes (148ms)
[00004] LSTAT
[00004] STATUS 33bytes (50ms)
[00005] LSTAT
[00005] STATUS 28bytes (4ms)
[00006] OPENDIR
[00006] STATUS 22bytes (5ms)
[00007] LSTAT
[00007] STATUS 33bytes (4ms)
[00008] OPENDIR
[00008] STATUS 22bytes (4ms)
[00009] OPENDIR
[00009] STATUS 22bytes (5ms)
[00010] OPENDIR
[00010] STATUS 22bytes (7ms)
[00011] OPENDIR
[00011] STATUS 22bytes (6ms)
[00012] OPENDIR
[00012] STATUS 22bytes (4ms)
[00013] OPENDIR
[00013] STATUS 22bytes (5ms)
[00014] OPENDIR
[00014] STATUS 22bytes (4ms)
[00015] OPENDIR
[00015] STATUS 22bytes (5ms)
[00016] OPENDIR
[00016] STATUS 22bytes (6ms)
[00017] OPENDIR
[00017] STATUS 22bytes (6ms)
[00018] OPENDIR
[00018] STATUS 22bytes (6ms)
[00019] OPENDIR
[00019] STATUS 22bytes (5ms)
[00020] OPENDIR
[00020] STATUS 22bytes (5ms)
[00021] OPENDIR
[00021] STATUS 22bytes (7ms)
[00022] OPENDIR
[00022] STATUS 22bytes (7ms)
[00023] OPENDIR
[00023] STATUS 22bytes (5ms)
[00024] OPENDIR
[00024] STATUS 22bytes (5ms)
[00025] OPENDIR
[00025] STATUS 22bytes (5ms)
[00026] OPENDIR
[00026] STATUS 22bytes (10ms)
[00027] OPENDIR
[00027] STATUS 22bytes (7ms)
[00028] OPENDIR
[00028] STATUS 22bytes (10ms)
[00029] OPENDIR
[00029] STATUS 22bytes (5ms)
[00030] OPENDIR
[00030] STATUS 22bytes (4ms)
[00031] OPENDIR
[00031] STATUS 22bytes (4ms)
[00032] OPENDIR
[00032] STATUS 22bytes (10ms)
[00033] LSTAT
[00033] STATUS 33bytes (6ms)
[00034] OPENDIR
[00034] STATUS 22bytes (217ms)
EXPECTED RESULT
`ls` should list the files on the android phone.
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