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authorJoey Hess <joeyh@joeyh.name>2017-10-10 13:37:46 -0400
committerJoey Hess <joeyh@joeyh.name>2017-10-10 13:37:46 -0400
commit05bd13187d754c5555d1956b9b2e7ea41ca283c9 (patch)
tree8c8671713674da188e5296cb4a9864279d2512da
parentfe854fbd41cb3190402e9ce249674de871cd71f0 (diff)
response
-rw-r--r--doc/bugs/--shared_setting_of_git_causes_annex__39__ed_files_to_be_writeable__33__/comment_2_0619eec44cddf3d3b1aae27c7bd1389a._comment22
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+[[!comment format=mdwn
+ username="joey"
+ subject="""comment 2"""
+ date="2017-10-10T17:23:14Z"
+ content="""
+The write bit is necessary so that the files can be opened in write mode to
+lock them. Normally the write bit is temporarily enabled and then disabled
+for locking, but in a shared repository, some other user may own the file,
+which prevents the user from changing its permissions.
+
+Similarly, the parent directory is not made unwritable in a shared
+repository, because other users won't be able to temporarily flip the write
+bit on when making changes.
+
+[[!commit 0d432dd1a4f718225c4192d0834a4e0a34b3e4bd]] used the latter as a
+rationalle to allow the former.
+
+I suppose it could use separate lock files from the content file,
+as is already done in direct mode. However interaction between different
+versions of git-annex with different ideas about locking could result in
+`git annex drop` losing data.
+"""]]