Hello
I have compiled a dso version of apache 1.3.14 on V5.1 which runs smoothly
without my module for apache. In fact, it runs smoothly in single process
mode with our module. But in multi-process mode ( normal ) all the child
processes exit, and leave the parent hanging.
I have looked at the error logs which show nothing of interest, - an unclean
shutdown error which is due to me killing the hanging parent process.
I've run apache under trace which shows that when apache goes to fork it's
children it never execs the httpd process. The following is a portion of the
trace files I generated with my module, and without:
Without :
[473079]: close (8) = 0
[473079]: syscall_224 () = -1, Errno 2 (No such file or directory)
[473079]: fork () = 473080
Tracing process /proc/473080
473080
[473079]: sigprocmask (SIG_BLOCK, {SIGINT}, ) = 0, [ , ,
{SIGILL|SIGABRT|SIGEMT|
SIGKILL|SIGBUS|SIGSEGV|SIGPIPE|SIGALRM|SIGURG|SIGSTOP|SIGTSTP|SIGCONT|SIGCHL
D|SI
GTTIN|SIGTTOU|SIGIO|SIGXCPU|SIGXFSZ|SIGVTALRM|SIGPROF|SIGWINCH|SIGINFO}]
[473080]: sigaction (SIGTERM, {{0x12000b500,0x0,0}}, 0x0) = 0, [ , , NULL ]
[473080]: sigaction (SIGALRM, {{0x12000b500,0x0,0}}, 0x0) = 0, [ , , NULL ]
[473080]: sigaction (SIGPIPE, {{0x12000a010,0x0,0}}, 0x0) = 0, [ , , NULL ]
[473080]: sigaction (SIGSYS, {{0x12000a010,0x0,0}}, 0x0) = 0, [ , , NULL ]
[473080]: sigaction (SIGBUS, {{0x12000a010,0x0,0}}, 0x0) = 0, [ , , NULL ]
[473080]: sigaction (SIGFPE, {{0x12000a010,0x0,0}}, 0x0) = 0, [ , , NULL ]
[473080]: sigaction (SIGEMT, {{0x12000a010,0x0,0}}, 0x0) = 0, [ , , NULL ]
[473080]: sigaction (SIGABRT, {{0x12000a010,0x0,0}}, 0x0) = 0, [ , , NULL ]
[473080]: sigaction (SIGTRAP, {{0x12000a010,0x0,0}}, 0x0) = 0, [ , , NULL ]
[473080]: sigaction (SIGILL, {{0x12000a010,0x0,0}}, 0x0) = 0, [ , , NULL ]
[473080]: sigaction (SIGQUIT, {{0x12000b500,0x0,0}}, 0x0) = 0, [ , , NULL ]
[473080]: sigaction (SIGINT, {{0x12000b500,0x0,0}}, 0x0) = 0, [ , , NULL ]
[473080]: sigaction (SIGHUP, {{0x12000a010,0x0,0}}, 0x0) = 0, [ , , NULL ]
[473080]: execve ("/home1/ecampo/dev/apacheservers/dso/apache/bin/httpd",
0x1203
0, 0x12040) = 0
[473080]: getpagesize () = 8192
----------------------------------------------------------------------------
-----------------------------------------------------------
With my module:
[473039]: close (8) = 0
[473039]: syscall_224 () = 0
[473039]: pipe (0x11fffb6b0) = 8
[473039]: link ("/tmp/sh4730390", "/tmp/sh4730391") = 0
[473039]: fork () = 473067
[473039]: close (9) = 0
Tracing process /proc/473067
473067
[473067]: sigaction (SIGTERM, {{0x12000b500,0x0,0}}, 0x0) = 0, [ , , NULL ]
[473067]: sigaction (SIGALRM, {{0x12000b500,0x0,0}}, 0x0) = 0, [ , , NULL ]
[473067]: sigaction (SIGPIPE, {{0x12000a010,0x0,0}}, 0x0) = 0, [ , , NULL ]
[473067]: sigaction (SIGSYS, {{0x12000a010,0x0,0}}, 0x0) = 0, [ , , NULL ]
[473067]: sigaction (SIGBUS, {{0x12000a010,0x0,0}}, 0x0) = 0, [ , , NULL ]
[473067]: sigaction (SIGFPE, {{0x12000a010,0x0,0}}, 0x0) = 0, [ , , NULL ]
[473067]: sigaction (SIGEMT, {{0x12000a010,0x0,0}}, 0x0) = 0, [ , , NULL ]
[473067]: sigaction (SIGABRT, {{0x12000a010,0x0,0}}, 0x0) = 0, [ , , NULL ]
[473067]: sigaction (SIGTRAP, {{0x12000a010,0x0,0}}, 0x0) = 0, [ , , NULL ]
[473067]: sigaction (SIGILL, {{0x12000a010,0x0,0}}, 0x0) = 0, [ , , NULL ]
[473067]: sigaction (SIGQUIT, {{0x12000b500,0x0,0}}, 0x0) = 0, [ , , NULL ]
[473067]: sigaction (SIGINT, {{0x12000b500,0x0,0}}, 0x0) = 0, [ , , NULL ]
[473067]: sigaction (SIGHUP, {{0x12000a010,0x0,0}}, 0x0) = 0, [ , , NULL ]
[473067]: close (8) = 0
[473067]: dup2 (9, 1) = 1
[473067]: close (9) = 0
[473067]: access ("./cat", X_OK) = -1, Errno 2 (No such file or directory)
[473067]: access ("/usr/users/ecampo/bin/cat", X_OK) = -1, Errno 2 (No such
file
or directory)
----------------------------------------------------------------------------
-------------------------------------------------
With my module the syscall_224 returns 0, and then apache never execs httpd.
I'm wondering if anyone has tried to compile apache 1.3.14 on V5.1 and if
so, if you've encountered any similar problems.
Thanks,
Enrique
Enrique Martin del Campo
Software Engineer
Securant Technologies
ecampo_at_securant.com
Received on Fri Apr 20 2001 - 00:13:59 NZST