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[PATCH] knfsd: nfsd4: represent nfsv4 acl with array instead of linked list

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Simplify the memory management and code a bit by representing acls with an
array instead of a linked list.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
J. Bruce Fields
2007-02-16 01:28:30 -08:00
committed by Linus Torvalds
parent 575a6290f0
commit 28e05dd845
4 changed files with 67 additions and 137 deletions
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43
fs/nfsd/nfs4xdr.c
View File

@@ -273,42 +273,42 @@ nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, struct iattr *ia
iattr->ia_valid |= ATTR_SIZE;
}
if (bmval[0] & FATTR4_WORD0_ACL) {
int nace, i;
struct nfs4_ace ace;
int nace;
struct nfs4_ace *ace;
READ_BUF(4); len += 4;
READ32(nace);
*acl = nfs4_acl_new();
if (nace > NFS4_ACL_MAX)
return nfserr_resource;
*acl = nfs4_acl_new(nace);
if (*acl == NULL) {
host_err = -ENOMEM;
goto out_nfserr;
}
defer_free(argp, (void (*)(const void *))nfs4_acl_free, *acl);
defer_free(argp, kfree, *acl);
for (i = 0; i < nace; i++) {
(*acl)->naces = nace;
for (ace = (*acl)->aces; ace < (*acl)->aces + nace; ace++) {
READ_BUF(16); len += 16;
READ32(ace.type);
READ32(ace.flag);
READ32(ace.access_mask);
READ32(ace->type);
READ32(ace->flag);
READ32(ace->access_mask);
READ32(dummy32);
READ_BUF(dummy32);
len += XDR_QUADLEN(dummy32) << 2;
READMEM(buf, dummy32);
ace.whotype = nfs4_acl_get_whotype(buf, dummy32);
ace->whotype = nfs4_acl_get_whotype(buf, dummy32);
host_err = 0;
if (ace.whotype != NFS4_ACL_WHO_NAMED)
ace.who = 0;
else if (ace.flag & NFS4_ACE_IDENTIFIER_GROUP)
if (ace->whotype != NFS4_ACL_WHO_NAMED)
ace->who = 0;
else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP)
host_err = nfsd_map_name_to_gid(argp->rqstp,
buf, dummy32, &ace.who);
buf, dummy32, &ace->who);
else
host_err = nfsd_map_name_to_uid(argp->rqstp,
buf, dummy32, &ace.who);
if (host_err)
goto out_nfserr;
host_err = nfs4_acl_add_ace(*acl, ace.type, ace.flag,
ace.access_mask, ace.whotype, ace.who);
buf, dummy32, &ace->who);
if (host_err)
goto out_nfserr;
}
@@ -1596,7 +1596,6 @@ nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
}
if (bmval0 & FATTR4_WORD0_ACL) {
struct nfs4_ace *ace;
struct list_head *h;
if (acl == NULL) {
if ((buflen -= 4) < 0)
@@ -1609,9 +1608,7 @@ nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
goto out_resource;
WRITE32(acl->naces);
list_for_each(h, &acl->ace_head) {
ace = list_entry(h, struct nfs4_ace, l_ace);
for (ace = acl->aces; ace < acl->aces + acl->naces; ace++) {
if ((buflen -= 4*3) < 0)
goto out_resource;
WRITE32(ace->type);
@@ -1821,7 +1818,7 @@ out_acl:
status = nfs_ok;
out:
nfs4_acl_free(acl);
kfree(acl);
if (fhp == &tempfh)
fh_put(&tempfh);
return status;