On 02/19/2013 11:13 AM, Rainer Jung wrote:
It will be tedious, but if we want to check whether the OS disallows
some syscalls when running as suid under root, then truss should provide
insight.
So run iPlanet (the iPlanet start script) under truss -f -o
/some/path/tr.out once in the working config and once in the non-working
one and try to find differences w.r.t. to syscalls that return an error.
Once you know what you are looking after, the additional truss flags "-v
all -w all -r all" will provide aditional insight (and a huge volume of
output).
I was hoping to avoid truss and that someone else had experienced this,
or had an idea of what might be new in Solaris 11 that would cause this :)
This is in the case where it works:
8435/2: read(7, 0xFC1FDF50, 4096) Err#11 EAGAIN
8435/3: lwp_create() (returning as new lwp ...) = 0
8435/3: setustack(0xFC8D0AA0)
8435/3: schedctl() = 0xFC975020
8435/3: open("/etc/netconfig", O_RDONLY) = 13
8435/3: fstat64(13, 0xFC07F720) = 0
8435/3: fstat64(13, 0xFC07F630) = 0
thread 3 was created and that's what does the systhread_start stuff.
In the case where it doesn't work:
8207/2: read(8, 0xFC1FDF50, 4096) Err#11 EAGAIN
8205: pollsys(0x080B9008, 1, 0x080471D8, 0x00000000) = 1
8205: accept(4, 0x00000000, 0x00000000, SOV_DEFAULT) = 5
8192: waitid(P_ALL, 0, 0x080461D0,
WEXITED|WTRAPPED|WSTOPPED|WCONTINUED) (sleeping...)
8203: sigsuspend(0x08047220) (sleeping...)
8207/1: pollsys(0x00000000, 0, 0x080427F8, 0x00000000) = 0
8207/2: pollsys(0xFC1FDEB0, 1, 0xFC1FDE78, 0x00000000) (sleeping...)
8205: pollsys(0x080B9008, 2, 0x080471D8, 0x00000000) (sleeping...)
8207/1: pollsys(0x00000000, 0, 0x080427F8, 0x00000000) (sleeping...)
8207/1: pollsys(0x00000000, 0, 0x080427F8, 0x00000000) = 0
8207/1: pollsys(0x00000000, 0, 0x080427F8, 0x00000000) (sleeping...)
8207/1: pollsys(0x00000000, 0, 0x080427F8, 0x00000000) = 0
8207/1: pollsys(0x00000000, 0, 0x080427F8, 0x00000000) (sleeping...)
8207/1: pollsys(0x00000000, 0, 0x080427F8, 0x00000000) = 0
8207/1: pollsys(0x00000000, 0, 0x080427F8, 0x00000000) (sleeping...)
8207/1: pollsys(0x00000000, 0, 0x080427F8, 0x00000000) = 0
8207/2: pollsys(0xFC1FDEB0, 1, 0xFC1FDE78, 0x00000000) = 0
So something is definitely preventing the systhread_start call to even
get as far as the system call to lwp_create.
Unfortunately, this is now quite a bit beyond me. Might have to figure
out our partner contacts at oracle to see what's up.
Andy
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