I write a code with indirecting execve() system call as below..
OS : HP-UX 11.11i, (64-bit Kernel)
Memory : 512 MB

int my_execve(char *path, char *argv[], char *envp[])
{
/* call original system call */
return execve(path, argv, envp);
}

After loading a module, telnet to system which load my module from remote.
Then, fail to prompt a shell...error occurred as below...
---------------------------
login: root
Password:
Please wait...checking for disk quotas

Pid 4025 received a SIGSEGV for stack growth failure.
Possible causes: insufficient memory or swap space,
or stack size exceeded maxssiz.
No shell
----------------------------

So, Reconfigure Kernel parameters, maxdsiz, maxtsiz, maxssiz, nfile, nproc, etc.
But....I have the same result....
Belows are truss text for inetd...(only catching for execve)

HELP ME....!!!!

( Attached to process 516 ("/usr/sbin/inetd") [32-bit] )
516: select(31, 0x7aff0390, NULL, NULL, NULL) [sleeping]
4024: execve("/usr/lbin/telnetd", 0x4000a8a8, 0x7aff017c) [entry]
argv[0] @ 0x4000a898: "telnetd"
env[0] @ 0x7aff0044: "LANG=ko_KR.eucKR"
env[1] @ 0x7aff0140: "TZ=KST-9"
4024: execve("/usr/lbin/telnetd", 0x4000a8a8, 0x7aff017c) = 0 [32-bit]
4025: execve("/usr/bin/login", 0x7aff0808, 0x40004d60) [entry]
argv[0] @ 0x40001cf8: "login"
argv[1] @ 0x40001d00: "-h"
argv[2] @ 0x7aff0238: "192.168.1.68"
argv[3] @ 0x40001d08: "-p"
env[0] @ 0x40002270: "TERM=vt100"
4025: execve("/usr/bin/login", 0x7aff0808, 0x40004d60) = 0 [32-bit]
4025: In user-mode [running]
4026: execve("/usr/bin/sh", 0x7aff0418, 0x400010e0) [entry]
argv[0] @ 0xffffffffc01402b8:
argv[1] @ 0xffffffffc01402c0:
argv[2] @ 0x7aff01b8: "/usr/bin/quota root"
env[0] @ 0x40001690: "HOME=/"
env[1] @ 0x40002550: "PATH=:/usr/sbin:/usr/bin:/sbin"
env[2] @ 0x40001670: "LOGNAME=root"
env[3] @ 0x40001630: "TERM=vt100"
env[4] @ 0x40001a98: "SHELL=/sbin/sh"
env[5] @ 0x400011f8: "MAIL=/var/mail/root"
4026: execve("/usr/bin/sh", 0x7aff0418, 0x400010e0) = 0 [32-bit]
4027: execve("/usr/bin/quota", 0x400128e8, 0x40012928) [entry]
argv[0] @ 0x40012900: "/usr/bin/quota"
argv[1] @ 0x40012918: "root"
env[0] @ 0x40012960: "_=/usr/bin/quota"
env[1] @ 0x40012980: "PATH=:/usr/sbin:/usr/bin:/sbin"
env[2] @ 0x400129a8: "COLUMNS=122"
env[3] @ 0x400129c0: "LOGNAME=root"
env[4] @ 0x400129d8: "MAIL=/var/mail/root"
env[5] @ 0x400129f8: "SHELL=/sbin/sh"
env[6] @ 0x40012a10: "HOME=/"
env[7] @ 0x40012a20: "TERM=vt100"
env[8] @ 0x40012a38: "PWD=/"
env[9] @ 0x40012a48: "LINES=31"
4027: execve("/usr/bin/quota", 0x400128e8, 0x40012928) = 0 [32-bit]
4025: execve("/sbin/sh", 0x400038907aff01c8, 0x400010e0) [entry]
env[0] @ 0x40001690: "HOME=/"
env[1] @ 0x40002550: "PATH=:/usr/sbin:/usr/bin:/sbin"
env[2] @ 0x40001670: "LOGNAME=root"
env[3] @ 0x40001630: "TERM=vt100"
env[4] @ 0x40001a98: "SHELL=/sbin/sh"
env[5] @ 0x400011f8: "MAIL=/var/mail/root"
4025: execve("/sbin/sh", 0x400038907aff01c8, 0x400010e0) ERR#14 EFAULT
4024: Received signal 18, SIGCLD, in getmsg(), [caught], no siginfo
516: Received signal 18, SIGCLD, in select(), [caught], no siginfo
516: select(31, 0x7aff0390, NULL, NULL, NULL) [sleeping]

In article <9e1964cc.0309080143.35be3987@posting.google.com >, ujoo wrote:

>int my_execve(char *path, char *argv[], char *envp[])
>{
> /* call original system call */
> return execve(path, argv, envp);
>}

I suspect you may not have terminated argv[] and envp[] with (char *)0.
Why do this anyway ? You don't get a return from a successful execve().

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