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Received: by minnie.vk1xwt.ampr.org with NNTP id AA1298 ; Tue, 23 Feb 93 14:34:15 EST Path: sserve!manuel.anu.edu.au!munnari.oz.au!hp9000.csc.cuhk.hk!saimiri.primate.wisc.edu!ames!elroy.jpl.nasa.gov!usc!wupost!gumby!yale!mintaka.lcs.mit.edu!ai-lab!hal.gnu.ai.mit.edu!mycroft From: mycroft@hal.gnu.ai.mit.edu (Charles Hannum) Newsgroups: comp.unix.bsd Subject: [386BSD] truncating the beginning of a file Date: 14 Feb 1993 19:16:33 GMT Organization: MIT Artificial Intelligence Lab Lines: 17 Distribution: world Message-ID: <1lm5qhINN8vb@life.ai.mit.edu> NNTP-Posting-Host: hal.ai.mit.edu Has anyone implemented this yet? If I don't get any `yae's in a week, I will write the requisite code and post patches (at least for UFS) myself. My current plan is to use one of the `spare' inode fields to contain an offset from the beginning of the file's allocated space to the actual beginning of data. (After Terry's patch, this should be initialized to 0 for all existing files.) Changes to `rdump' and `rrestore' may also be required. [It is truly a crock that this wasn't designed into Unix from the start.] -- \ / Charles Hannum, mycroft@ai.mit.edu /\ \ PGP public key available on request. MIME, AMS, NextMail accepted. Scheme White heterosexual atheist male (WHAM) pride!