qtree Administration 10-5
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You can use the following four file access models in working with qtrees:
CIFS user accessing a file with Windows NT security
CIFS user accessing a file with UNIX security
NFS user accessing a file with Windows NT security
NFS user accessing a file with UNIX security
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CIFS accesses to Windows files obey Windows security rules.
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The following principles apply to accessing UNIX files from CIFS:
All CIFS users are mapped to UNIX UIDs and GIDs.
File accesses use UNIX security or PC security, as chosen during the
cifs
setup program.
UNIX-style permissions are determined by the rights associated with the
UNIX UID and GID.
PC-style permissions are determined by the rights assigned in a shares
Access Control List (ACL) and are limited by the UNIX permissions assigned
to a file.
PC security is like FAT (File Allocation Table) file system security with per-file
permissions:
If the owner of a file or directory accesses an item, the owner permissions
are checked to see whether they allow access.
If someone other than the owner of a file or directory accesses an item, the
group permissions are checked to see whether they allow access.
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The following principles apply to accessing Windows files from NFS:
Windows NT permissions are mapped to UNIX permissions.
Each Windows NT user who sets Windows NT permissions is mapped to a UNIX
user and UNIX group, except that if the owner is a generic user, the owner is
mapped to root with restrictions.
Windows NT permissions for Owner are mapped to UNIX owner permissions.