Indeed and setgid happens here:
29977: ksh93 -p /var/tmp/pcred/Test.ksh
ffffffff7f0c80e8 setgid (32)
ffffffff7e635758 sh_argopts (1001025b0, ffffffff7fffeaa8, 0, ffffffff7e2ec388,
ffffffff7e7a4b00, ffffffff7e7a0000) + a18
ffffffff7e640914 sh_init (3, ffffffff7fffeaa8, 0, ffffffff7e7a3140, 10010aa00,
ffffffff7e7a0000) + 654
ffffffff7e657de8 sh_main (3, ffffffff7fffeaa8, 0, 18, 124900, 0) + 40
0000000100000d58 main (3, ffffffff7fffeaa8, ffffffff7fffeac8, 1f3ee8, 1c80,
10000) + 44
0000000100000cfc _start (0, 0, 0, 0, 0, 0) + 17c
and not in sh_init() where SHOPT_P_SUID is tested.
I also found a different problem; when I start a set-gid shell script with
(ksh linked to ksh93)
#!/bin/ksh -p
It works.
But when I tryL
#!/bin/ksh93 -p
I get:
/usr/bin/ksh93: syntax error at line 1: `(' unexpected
And this is what truss says:
105: *** SGID: rgid/egid/sgid = 0 / 320 / 320 ***
105: execve("/usr/bin/ksh93", 0xFFBFEC8C, 0xFFBFEC9C) argc = 3
105: argv: /usr/bin/ksh93 -p /dev/fd/3
105: execve("/usr/bin/sparcv9/ksh93", 0xFFBFEC8C, 0xFFBFEC9C) argc = 3
105: argv: /usr/bin/ksh93 -p /dev/fd/3
105: execve("/bin/sh", 0xFFFFFFFF7FFFEAA8, 0xFFFFFFFF7FFFEAC8) argc = 3
105: *** SGID: rgid/egid/sgid = 320 / 320 / 320 ***
105: argv: xterm /usr/bin/ksh93 /dev/fd/3
Where did that xterm came from and why is /bin/sh executed?
(the xterm was clearly taken from "_").
I see where this came from; my shell doesn't use $_ but the dtlogin
shell does set it and it sets it to the last command (/.../xterm). This
confuses ksh93 (unsetting it or setting it not to ksh)
% env _=/usr/bin/ksh93 ./test
foo
*** SGID: rgid/egid/sgid = 0 / 320 / 320 ***
execve("/usr/bin/ksh93", 0xFFBFFF34, 0xFFBFFF44) argc = 3
argv: /usr/bin/ksh93 -p /dev/fd/3
envp: _=/bin/ksh93
execve("/usr/bin/sparcv9/ksh93", 0xFFBFFF34, 0xFFBFFF44) argc = 3
argv: /usr/bin/ksh93 -p /dev/fd/3
envp: _=/bin/ksh93
foo
% env - ./test
/usr/bin/ksh93: syntax error at line 1: `(' unexpected
*** SGID: rgid/egid/sgid = 0 / 320 / 320 ***
execve("/usr/bin/ksh93", 0xFFBFFF4C, 0xFFBFFF5C) argc = 3
argv: /usr/bin/ksh93 -p /dev/fd/3
envp:
execve("/usr/bin/sparcv9/ksh93", 0xFFBFFF4C, 0xFFBFFF5C) argc = 3
argv: /usr/bin/ksh93 -p /dev/fd/3
envp:
execve("/bin/sh", 0xFFFFFFFF7FFFFEB8, 0xFFFFFFFF7FFFFED8) argc = 3
*** SGID: rgid/egid/sgid = 320 / 320 / 320 ***
argv: ksh93 /usr/bin/ksh93 /dev/fd/3
envp:
/usr/bin/ksh93: syntax error at line 1: `(' unexpected
Perhaps someone can explain what happens here?
Casper
