jms@tardis.Tymnet.COM (Joe Smith) (01/16/90)
After seeing some bug reports listed in the docs for SKSH, I tried some of experiments of my own. HARDCOPY v1.0 recorded on 15-Jan-90 23:12:01 to file "ffs.bug" To end the HARDCOPY session and close the file, type HARDCOPY END 1.FFS1:Misc> echo >test test 1.FFS1:Misc> type test test 1.FFS1:Misc> protect test sub w ;Turn off the writeable bit 1.FFS1:Misc> list test test 5 ----r-ed Today 23:12:34 1.FFS1:Misc> echo >>test next ;This should fail - cannot append 1.FFS1:Misc> type test ;It does test 1.FFS1:Misc> echo >test foo ;This should fail 1.FFS1:Misc> type test ;What happened?? 1.FFS1:Misc> list test ;It got wiped out!! test empty ----r-ed Today 23:13:19 1.FFS1:Misc> echo >foo foo 1.FFS1:Misc> copy foo test ;This should fail Error while Writing Destination file "test" removed 1.FFS1:Misc> list test ;"Removed"? That should not happen! Can't examine "test": object not found 1.FFS1:Misc> list foo foo 4 ----rwed Today 23:13:50 1.FFS1:Misc> type foo foo 1.FFS1:Misc> copy foo * foo 1.FFS1:Misc> protect foo sub r ;Turn off the readable bit 1.FFS1:Misc> type foo ;Why is there no error message here? 1.FFS1:Misc> copy foo * ;This does report an error Error while Reading 1.FFS1:Misc> echo >test test 1.FFS1:Misc> protect test re ;Turn off both the w and deleteable bits 1.FFS1:Misc> list test test 5 ----r-e- Today 23:15:03 1.FFS1:Misc> echo >>test 2nd ;This fails, but no error message 1.FFS1:Misc> type test test 1.FFS1:Misc> echo >test foo ;This fails, with correct error message SHELL error: Unable to open redirection file 1.FFS1:Misc> list test test 5 ----r-e- Today 23:15:03 1.FFS1:Misc> copy foo test ;This fails, with correct error message Can't open test - file is protected from deletion 1.FFS1:Misc> hardcopy end Summary: If the W bit is off but the D bit is on, AmigaDos and/or c:copy can still destroy your file. These tests were performed on a hard disk using C:copy and L:FastFileSystem from the WB 1.3.2 disk. -- Joe Smith (408)922-6220 | SMTP: JMS@F74.TYMNET.COM or jms@gemini.tymnet.com BT Tymnet Tech Services | UUCP: ...!{ames,pyramid}!oliveb!tymix!tardis!jms PO Box 49019, MS-D21 | PDP-10 support: My car's license plate is "POPJ P," San Jose, CA 95161-9019 | humorous dislaimer: "My Amiga speaks for me."
stefanb@cip-s02.informatik.rwth-aachen.de (Becker) (01/17/90)
This happens with DME too. If the w-bit is off an the d-bit is on, your file will be empty, but DME says 'OK'. Does this bug occur under the old file system? Stefan