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nfsd: add support for the umask attribute

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Clients can set the umask attribute when creating files to cause the
server to apply it always except when inheriting permissions from the
parent directory.  That way, the new files will end up with the same
permissions as files created locally.

See https://tools.ietf.org/html/draft-ietf-nfsv4-umask-02 for more
details.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Andreas Gruenbacher
2016-01-12 20:24:14 +01:00
committed by J. Bruce Fields
parent 3eb15f2828
commit 47057abde5
5 changed files with 34 additions and 9 deletions
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include/linux/nfs4.h
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@@ -440,6 +440,7 @@ enum lock_type4 {
#define FATTR4_WORD2_MDSTHRESHOLD (1UL << 4)
#define FATTR4_WORD2_CLONE_BLKSIZE (1UL << 13)
#define FATTR4_WORD2_SECURITY_LABEL (1UL << 16)
#define FATTR4_WORD2_MODE_UMASK (1UL << 17)
/* MDS threshold bitmap bits */
#define THRESHOLD_RD (1UL << 0)