On Fri, 2 Jul 2010 07:19:24 -0500, McKown, John wrote: > >No. UNIX does not have that functionality. I've looked for it. The closest is >called an "advisory lock". This is the flock() function in UNIX. But all >programs which access the file must code the flock() themselves. > Even as all z/OS programs desiring serialization must code DISP=OLD themselves.
The UNIX kernel provides internal serialization sufficient to prevent directory corruption (as z/OS protects VTOCs). Neither UNIX nor z/OS protects against data corruption except by various elective mechanisms. >http://linux.about.com/library/cmd/blcmdl2_flock.htm > Is there a shell interface to flock()? Is the lock automatically freed when the requesting process terminates, for whatever cause? -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
