plot -Tver temporary
utzoo!henry
utzoo!henry
Tue Feb 23 19:21:01 AEST 1982
As distributed, the Versatec filter in plot(1) makes its scan-conversion
temporary in /usr/tmp/raster rather than using a unique name, and leaves
it around afterwards. It creates it rw-rw-rw- so that in theory the next
user to run Versatec output simply stomps it. Problem: if the first user
has a non-zero umask, this doesn't work. Worse, vplot does not complain,
and subsequent users get copies of the first user's output rather than
their own. This is easily fixed:
1. Change the initialization of picture to be "/tmp/verXXXXXX"
(or maybe "/usr/tmp/verXXXXXX").
2. Precede the creat of picture with mktemp(picture); . You
might also want to change the creat mode to 0600.
3. Put an unlink(picture); before the exit() at the end of main.
4. Put an unlink(picture); before the exit() in onintr.
The only capability this loses is the ability to replot an old raster
file without scan-converting again. This doesn't seem a real problem.
In fact, does anybody know why such a useless capability was included
in the first place?
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