33 lines
1.3 KiB
Plaintext
33 lines
1.3 KiB
Plaintext
# $NetBSD: README.hardlinks,v 1.1 2016/05/29 22:32:03 dholland Exp $
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#
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catman.8 notes that this code doesn't handle hard links.
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To fix this, one might proceed as follows:
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(1) Add an additional data structure mapping (fsid_t, ino_t) pairs
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from stat to filenames.
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(2) In scanmandir(), in the readdir loop, next to the code that checks
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for a symlink, check if the page's linkcount > 1 (manstat.st_nlink > 1)
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and if so:
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a. Check the new data structure to see if this file's been seen before.
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If so, use the saved name of the page to construct a hard link in the
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cat directory, and continue to the next directory entry.
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b. If not, add to the new data structure to remember this page and
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process it as normal.
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One might clear the data structure for each mandir or not; probably
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for each man tree is best. The size of the structure isn't
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prohibitive; but the chances of ever seeing the same hardlinked page
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in two different man trees (e.g. in both /usr/share/man and
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/usr/pkg/man) are pretty well zero.
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All of this seems like a SMOP, but it doesn't really seem worth doing
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at the moment given that we don't build catpages at all by default and
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they aren't particularly useful to have any more except on the slowest
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of slow hardware. I've left this note so that someone else can take it
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up if they see fit.
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- dholland 20160529
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