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| author | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2014-11-07 14:44:26 -0500 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2014-11-07 16:19:49 -0500 |
| commit | 95d871f03cae6b49de040265cf88cbe2a16b9f05 (patch) | |
| tree | 911d8bed4226e4e87e1411145c7fe0e275dea545 /fs/nfsd/nfs4proc.c | |
| parent | 72c72bdf7bf53353d2d8e055194d27f0128be92b (diff) | |
| download | linux-95d871f03cae6b49de040265cf88cbe2a16b9f05.tar.bz2 | |
nfsd: Add ALLOCATE support
The ALLOCATE operation is used to preallocate space in a file. I can do
this by using vfs_fallocate() to do the actual preallocation.
ALLOCATE only returns a status indicator, so we don't need to write a
special encode() function.
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd/nfs4proc.c')
| -rw-r--r-- | fs/nfsd/nfs4proc.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c index 0beb023f25ac..a261f1800922 100644 --- a/fs/nfsd/nfs4proc.c +++ b/fs/nfsd/nfs4proc.c @@ -1014,6 +1014,36 @@ nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, } static __be32 +nfsd4_fallocate(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, + struct nfsd4_fallocate *fallocate, int flags) +{ + __be32 status = nfserr_notsupp; + struct file *file; + + status = nfs4_preprocess_stateid_op(SVC_NET(rqstp), cstate, + &fallocate->falloc_stateid, + WR_STATE, &file); + if (status != nfs_ok) { + dprintk("NFSD: nfsd4_fallocate: couldn't process stateid!\n"); + return status; + } + + status = nfsd4_vfs_fallocate(rqstp, &cstate->current_fh, file, + fallocate->falloc_offset, + fallocate->falloc_length, + flags); + fput(file); + return status; +} + +static __be32 +nfsd4_allocate(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, + struct nfsd4_fallocate *fallocate) +{ + return nfsd4_fallocate(rqstp, cstate, fallocate, 0); +} + +static __be32 nfsd4_seek(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_seek *seek) { @@ -1929,6 +1959,12 @@ static struct nfsd4_operation nfsd4_ops[] = { }, /* NFSv4.2 operations */ + [OP_ALLOCATE] = { + .op_func = (nfsd4op_func)nfsd4_allocate, + .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME, + .op_name = "OP_ALLOCATE", + .op_rsize_bop = (nfsd4op_rsize)nfsd4_write_rsize, + }, [OP_SEEK] = { .op_func = (nfsd4op_func)nfsd4_seek, .op_name = "OP_SEEK", |