execution problems and executable size questions

[Alfonso Acosta]

If I define  the DEBUG_TRACE macro the output I get is:

# dropbear -F
TRACE: enter loadhostkeys
TRACE: enter buf_get_priv_key
TRACE: enter rsa_key_free
TRACE: leave rsa_key_free: key == NULL
TRACE: enter buf_get_rsa_priv_key
TRACE: enter buf_get_rsa_pub_key
TRACE: leave buf_get_rsa_pub_key: success
TRACE: leave buf_get_rsa_priv_key
TRACE: leave buf_get_priv_key: done get rsa
TRACE: enter buf_get_priv_key
TRACE: enter dsa_key_free
TRACE: enter dsa_key_free: key == NULL
TRACE: leave buf_get_priv_key: done get dss
TRACE: leave loadhostkeys
[415] Jan 01 00:01:54 Not forking
[416] Jan 01 00:02:01 Child connection from 192.168.200.2:41135
TRACE: enter session_init
TRACE: leave session_init
TRACE: enter ident_readln
TRACE: leave ident_readln: return 43
TRACE: remoteident: SSH-2.0-OpenSSH_3.8.1p1 Debian 1:3.8.1p1-8
TRACE: buf_put_algolist: diffie-hellman-group1-sha1
TRACE: buf_put_algolist: ssh-rsa,ssh-dss
TRACE: buf_put_algolist: aes128-cbc,blowfish-cbc,twofish-cbc,3des-cbc
TRACE: buf_put_algolist: aes128-cbc,blowfish-cbc,twofish-cbc,3des-cbc
TRACE: buf_put_algolist: hmac-sha1,hmac-md5
TRACE: buf_put_algolist: hmac-sha1,hmac-md5
TRACE: buf_put_algolist: none
TRACE: buf_put_algolist: none
TRACE: enter encrypt_packet()
TRACE: encrypt_packet type is 20
TRACE: enter writemac
TRACE: leave writemac
TRACE: enter enqueue
TRACE: leave enqueue
TRACE: leave encrypt_packet()
TRACE: enter write_packet
TRACE: empty queue dequeing
TRACE: leave write_packet
TRACE: enter read_packet
TRACE: enter decrypt_packet
TRACE: leave decrypt_packet
TRACE: leave read_packet
TRACE: enter process_packet
TRACE: process_packet: packet type = 20
TRACE: enter recv_msg_kexinit
TRACE: buf_match_algo:
diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1
TRACE: buf_match_algo: ssh-rsa,ssh-dss
TRACE: buf_match_algo:
aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc at lysator.liu.se,aes128-ctr,aes192-ctr,aes256-ctr
TRACE: buf_match_algo:
aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc at lysator.liu.se,aes128-ctr,aes192-ctr,aes256-ctr
TRACE: buf_match_algo:
hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160 at openssh.com,hmac-sha1-96,hmac-md5-96
TRACE: buf_match_algo:
hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160 at openssh.com,hmac-sha1-96,hmac-md5-96
TRACE: buf_match_algo: none,zlib
TRACE: buf_match_algo: none,zlib
TRACE: leave recv_msg_kexinit
TRACE: leave process_packet
TRACE: enter read_packet
TRACE: enter decrypt_packet
TRACE: leave decrypt_packet
TRACE: leave read_packet
TRACE: enter process_packet
TRACE: process_packet: packet type = 30
TRACE: enter recv_msg_kexdh_init
TRACE: enter send_msg_kexdh_reply
TRACE: enter buf_put_pub_key
TRACE: enter buf_put_rsa_pub_key
TRACE: enter buf_putmpint
TRACE: leave buf_putmpint
TRACE: enter buf_putmpint
TRACE: leave buf_putmpint
TRACE: leave buf_put_rsa_pub_key
TRACE: leave buf_put_pub_key
TRACE: enter buf_putmpint
TRACE: leave buf_putmpint
TRACE: enter buf_putmpint
TRACE: leave buf_putmpint
TRACE: enter buf_putmpint
TRACE: leave buf_putmpint
TRACE: enter buf_put_pub_key
TRACE: enter buf_put_rsa_pub_key
TRACE: enter buf_putmpint
TRACE: leave buf_putmpint
TRACE: enter buf_putmpint
TRACE: leave buf_putmpint
TRACE: leave buf_put_rsa_pub_key
TRACE: leave buf_put_pub_key
TRACE: enter buf_putmpint
TRACE: leave buf_putmpint
TRACE: enter buf_put_rsa_sign
TRACE: leave buf_put_rsa_sign
TRACE: enter encrypt_packet()
TRACE: encrypt_packet type is 31
TRACE: enter writemac
TRACE: leave writemac
TRACE: enter enqueue
TRACE: leave enqueue
TRACE: leave encrypt_packet()
TRACE: leave send_msg_kexdh_reply
TRACE: enter send_msg_newkeys
TRACE: enter encrypt_packet()
TRACE: encrypt_packet type is 21
TRACE: enter writemac
TRACE: leave writemac
TRACE: enter enqueue
TRACE: leave enqueue
TRACE: leave encrypt_packet()
TRACE: leave send_msg_newkeys
TRACE: leave recv_msg_kexdh_init
TRACE: leave process_packet
TRACE: enter write_packet
TRACE: leave write_packet
TRACE: enter write_packet
TRACE: empty queue dequeing
TRACE: leave write_packet
TRACE: enter read_packet
TRACE: enter decrypt_packet
TRACE: leave decrypt_packet
TRACE: leave read_packet
TRACE: enter process_packet
TRACE: process_packet: packet type = 21
TRACE: enter recv_msg_newkeys
TRACE: enter gen_new_keys
TRACE: enter buf_putmpint
TRACE: leave buf_putmpint
TRACE: leave gen_new_keys
TRACE: leave recv_msg_newkeys
TRACE: leave process_packet
TRACE: enter read_packet
TRACE: enter decrypt_packet
TRACE: leave decrypt_packet
TRACE: leave read_packet
TRACE: enter process_packet
TRACE: process_packet: packet type = 5
TRACE: enter recv_msg_service_request
TRACE: accepting service ssh-userauth
TRACE: enter encrypt_packet()
TRACE: encrypt_packet type is 6
TRACE: enter writemac
TRACE: leave writemac
TRACE: enter enqueue
TRACE: leave enqueue
TRACE: leave encrypt_packet()
TRACE: leave recv_msg_service_request: done ssh-userauth
TRACE: leave process_packet
TRACE: enter write_packet
TRACE: empty queue dequeing
TRACE: leave write_packet
TRACE: enter read_packet
TRACE: enter decrypt_packet
TRACE: leave decrypt_packet
TRACE: leave read_packet
TRACE: enter process_packet
TRACE: process_packet: packet type = 50
TRACE: enter recv_msg_userauth_request
TRACE: enter send_msg_userauth_failure
TRACE: enter encrypt_packet()
TRACE: encrypt_packet type is 51
TRACE: enter writemac
TRACE: leave writemac
TRACE: enter enqueue
TRACE: leave enqueue
TRACE: leave encrypt_packet()
TRACE: leave send_msg_userauth_failure
TRACE: leave process_packet
TRACE: enter write_packet
TRACE: empty queue dequeing
TRACE: leave write_packet
TRACE: enter read_packet
TRACE: enter decrypt_packet
TRACE: leave decrypt_packet
TRACE: leave read_packet
TRACE: enter process_packet
TRACE: process_packet: packet type = 50
TRACE: enter recv_msg_userauth_request
TRACE: enter checkusername
TRACE: shell is /bin/sh
TRACE: test shell is '/bin/sh'
TRACE: matching shell
TRACE: uid = 0
TRACE: leave checkusername
[416] Jan 01 00:02:13 password auth succeeded for 'admin'
TRACE: enter send_msg_userauth_success
TRACE: enter encrypt_packet()
TRACE: encrypt_packet type is 52
TRACE: enter writemac
TRACE: leave writemac
TRACE: enter enqueue
TRACE: leave enqueue
TRACE: leave encrypt_packet()
TRACE: leave send_msg_userauth_success
TRACE: leave process_packet
TRACE: enter write_packet
TRACE: empty queue dequeing
TRACE: leave write_packet
TRACE: enter read_packet
TRACE: enter decrypt_packet
TRACE: leave decrypt_packet
TRACE: leave read_packet
TRACE: enter process_packet
TRACE: process_packet: packet type = 90
TRACE: enter recv_msg_channel_open
TRACE: enter newchannel - remotechan 0, type 1
TRACE: leave newchannel
TRACE: enter send_msg_channel_open_confirmation
TRACE: enter encrypt_packet()
TRACE: encrypt_packet type is 91
TRACE: enter writemac
TRACE: leave writemac
TRACE: enter enqueue
TRACE: leave enqueue
TRACE: leave encrypt_packet()
TRACE: leave send_msg_channel_open_confirmation
TRACE: leave recv_msg_channel_open
TRACE: leave process_packet
TRACE: enter checkclose
TRACE: leave checkclose
TRACE: enter write_packet
TRACE: empty queue dequeing
TRACE: leave write_packet
TRACE: enter checkclose
TRACE: leave checkclose
TRACE: enter read_packet
TRACE: enter decrypt_packet
TRACE: leave decrypt_packet
TRACE: leave read_packet
TRACE: enter process_packet
TRACE: process_packet: packet type = 98
TRACE: enter recv_msg_channel_request
TRACE: chan type is 1
TRACE: continue recv_msg_channel_request: session request
TRACE: enter chansessionrequest
TRACE: type is pty-req
TRACE: enter sessionpty
[416] Jan 01 00:02:13 exit after auth (admin): chmod(/dev/ttyp1, 0622)
failed: Read-only file system
TRACE: enter session_cleanup
TRACE: enter sign_key_free
TRACE: enter dsa_key_free
TRACE: leave dsa_key_free
TRACE: enter rsa_key_free
TRACE: leave rsa_key_free
TRACE: leave sign_key_free
TRACE: enter chancleanup
TRACE: channel 0 closing
TRACE: enter removechannel
TRACE: channel index is 0
TRACE: enter closechansess
[416] Jan 01 00:02:13 chown /dev/ttyp1 0 0 failed: Read-only file system
[416] Jan 01 00:02:13 chmod /dev/ttyp1 0666 failed: Read-only file system
TRACE: leave closechansess
TRACE: leave removechannel
TRACE: leave chancleanup
TRACE: leave session_cleanup

-- 
Alfonso Acosta
http://babel.ls.fi.upm.es/~aacosta/