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List:       openbsd-bugs
Subject:    documentation/1218: execve(2) says NCARGS is 20480.
From:       akr () m17n ! org
Date:       2000-04-28 20:03:09
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>Number:         1218
>Category:       documentation
>Synopsis:       execve(2) says that NCARGS is 20480 but actually it is 256 * 1024.
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    bugs
>State:          open
>Class:          doc-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Apr 28 14:00:01 MDT 2000
>Last-Modified:
>Originator:     Tanaka Akira
>Organization:
net
>Release:        2.6
>Environment:
        System      : OpenBSD 2.6
        Architecture: OpenBSD.i386
        Machine     : i386
>Description:
execve(2) says:

     [E2BIG]       The number of bytes in the new process's argument list is
                   larger than the system-imposed limit.  The limit in the
                   system as released is 20480 bytes (NCARGS in
                   <sys/param.h>).

But actually NCARGS is 256 * 1024.

>How-To-Repeat:

$ grep NCARGS /usr/include/sys/param.h 
#define NCARGS          ARG_MAX         /* max bytes for an exec function */
$ grep ARG_MAX /usr/include/sys/syslimits.h 
#define ARG_MAX          (256 * 1024)   /* max bytes for an exec function */
$ 

>Fix:

>Audit-Trail:
>Unformatted:

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