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vfs_shadow_copy2: Preserve all open flags assuming ROFS

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Instead of replacing open flags with just O_RDONLY, filter out all those
flags unrelated to a Read Only File System

BUG: https://bugzilla.samba.org/show_bug.cgi?id=14573

Signed-off-by: Anoop C S <anoopcs@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>

Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Thu Nov 12 17:23:19 UTC 2020 on sn-devel-184
This commit is contained in:
Anoop C S 2020-11-12 20:27:24 +05:30 committed by Ralph Boehme
parent 8036bf9717
commit e9e06a11da
1 changed files with 2 additions and 2 deletions
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4
source3/modules/vfs_shadow_copy2.c
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@ -1351,7 +1351,7 @@ static int shadow_copy2_openat(vfs_handle_struct *handle,
* EINVAL which we carefully map to EROFS. In sum, this
* matches Windows behaviour.
*/
flags = O_RDONLY;
flags &= ~(O_WRONLY | O_RDWR | O_CREAT);
}
return SMB_VFS_NEXT_OPENAT(handle,
dirfsp,
@ -1385,7 +1385,7 @@ static int shadow_copy2_openat(vfs_handle_struct *handle,
* pwrite() syscall with EINVAL which we carefully map to EROFS. In sum,
* this matches Windows behaviour.
*/
flags = O_RDONLY;
flags &= ~(O_WRONLY | O_RDWR | O_CREAT);
ret = SMB_VFS_NEXT_OPENAT(handle,
dirfsp,