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From Eric Sit <e...@mit.edu>
Subject os-windows/7758: handling of standard pipes set to -1 when apache started by a win32 service
Date Mon, 21 May 2001 17:21:26 GMT

>Number:         7758
>Category:       os-windows
>Synopsis:       handling of standard pipes set to -1 when apache started by a win32 service
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    apache
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   apache
>Arrival-Date:   Mon May 21 10:30:04 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     esit@mit.edu
>Release:        1.3.19
>Organization:
apache
>Environment:
Win32 environment, NT 4.0 SP6, VC++ 6
>Description:
If apache is started by a windows service, it inherits standard pipes stdin, stdout, stderr
as -1.  This causes apache to fail.  What should really be done is if the pipe is -1, then
set the pipe to the appropriate.  Now Apache can be spawned properly by a win32 service.
>How-To-Repeat:
Create a windows service and have that service start apache.
>Fix:
Enclosed is a patch from 1.3.19 that will fix this bug.

--- alloc-orig.c        Mon Jan 15 10:04:56 2001
+++ alloc.c     Mon May 21 13:16:59 2001
@@ -2138,21 +2138,21 @@
        /* Now do the right thing with your pipes */
        if (pipe_in) {
            hStdIn = dup(fileno(stdin));
-           if(dup2(in_fds[0], fileno(stdin)))
-               ap_log_error(APLOG_MARK, APLOG_ERR, NULL, "dup2(stdin) failed");
+               if(dup2(in_fds[0], fileno(stdin)==-1 ? 0:fileno(stdin)) )
+                       ap_log_error(APLOG_MARK, APLOG_ERR, NULL, "dup2(stdin) failed");
            close(in_fds[0]);
        }
        if (pipe_out) {
            hStdOut = dup(fileno(stdout));
            close(fileno(stdout));
-           if(dup2(out_fds[1], fileno(stdout)))
-               ap_log_error(APLOG_MARK, APLOG_ERR, NULL, "dup2(stdout) failed");
+               if(dup2(out_fds[1], fileno(stdout)==-1 ? 1:fileno(stdout)) )
+                       ap_log_error(APLOG_MARK, APLOG_ERR, NULL, "dup2(stdout) failed");
            close(out_fds[1]);
        }
        if (pipe_err) {
            hStdErr = dup(fileno(stderr));
-           if(dup2(err_fds[1], fileno(stderr)))
-               ap_log_error(APLOG_MARK, APLOG_ERR, NULL, "dup2(stderr) failed");
+               if(dup2(err_fds[1], fileno(stderr)==-1 ? 2:fileno(stderr)) )
+                       ap_log_error(APLOG_MARK, APLOG_ERR, NULL, "dup2(stderr) failed");
            close(err_fds[1]);
        }
>Release-Note:
>Audit-Trail:
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