linux/fs/udf
Steven J. Magnani c3367a1b47 udf: augment UDF permissions on new inodes
Windows presents files created within Linux as read-only, even when
permissions in Linux indicate the file should be writable.

UDF defines a slightly different set of basic file permissions than Linux.
Specifically, UDF has "delete" and "change attribute" permissions for each
access class (user/group/other). Linux has no equivalents for these.

When the Linux UDF driver creates a file (or directory), no UDF delete or
change attribute permissions are granted. The lack of delete permission
appears to cause Windows to mark an item read-only when its permissions
otherwise indicate that it should be read-write.

Fix this by having UDF delete permissions track Linux write permissions.
Also grant UDF change attribute permission to the owner when creating a
new inode.

Reported by: Ty Young
Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
Link: https://lore.kernel.org/r/20190827121359.9954-1-steve@digidescorp.com
Signed-off-by: Jan Kara <jack@suse.cz>
2019-08-27 15:38:46 +02:00
..
balloc.c udf: prevent allocation beyond UDF partition 2019-07-31 18:41:37 +02:00
dir.c udf: Fix 64-bit sign extension issues affecting blocks > 0x7FFFFFFF 2017-10-17 11:56:45 +02:00
directory.c udf: Provide function for calculating dir entry length 2018-06-20 11:05:49 +02:00
ecma_167.h udf: use __packed instead of __attribute__ ((packed)) 2017-01-10 11:29:11 +01:00
file.c udf: augment UDF permissions on new inodes 2019-08-27 15:38:46 +02:00
ialloc.c udf: augment UDF permissions on new inodes 2019-08-27 15:38:46 +02:00
inode.c udf: augment UDF permissions on new inodes 2019-08-27 15:38:46 +02:00
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
lowlevel.c udf: atomically read inode size 2017-01-10 11:57:34 +01:00
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
misc.c udf: Fix signed/unsigned format specifiers 2017-10-17 12:00:58 +02:00
namei.c udf: fix an uninitialized read bug and remove dead code 2019-04-17 13:13:24 +02:00
osta_udf.h udf: use __packed instead of __attribute__ ((packed)) 2017-01-10 11:29:11 +01:00
partition.c udf: Fix signed/unsigned format specifiers 2017-10-17 12:00:58 +02:00
super.c udf: Use dynamic debug infrastructure 2019-08-26 11:36:19 +02:00
symlink.c statx: Add a system call to make enhanced file info available 2017-03-02 20:51:15 -05:00
truncate.c udf: Propagate errors from udf_truncate_extents() 2019-03-18 16:30:02 +01:00
udf_i.h udf: augment UDF permissions on new inodes 2019-08-27 15:38:46 +02:00
udf_sb.h udf: Drop pack pragma from udf_sb.h 2018-09-07 10:32:23 +02:00
udfdecl.h udf: augment UDF permissions on new inodes 2019-08-27 15:38:46 +02:00
udfend.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
udftime.c udf: convert inode stamps to timespec64 2018-06-27 13:58:00 +02:00
unicode.c udf: Allow mounting volumes with incorrect identification strings 2018-11-19 10:27:59 +01:00