mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-24 02:10:52 +07:00
nfs: use generic posix ACL infrastructure for v3 Posix ACLs
This causes a small behaviour change in that we don't bother to set ACLs on file creation if the mode bit can express the access permissions fully, and thus behaving identical to local filesystems. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Christoph Hellwig
Al Viro
parent
e01580bf9e
commit
013cdf1088
@ -1641,10 +1641,6 @@ struct inode *nfs_alloc_inode(struct super_block *sb)
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return NULL;
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nfsi->flags = 0UL;
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nfsi->cache_validity = 0UL;
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#ifdef CONFIG_NFS_V3_ACL
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nfsi->acl_access = ERR_PTR(-EAGAIN);
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nfsi->acl_default = ERR_PTR(-EAGAIN);
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#endif
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#if IS_ENABLED(CONFIG_NFS_V4)
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nfsi->nfs4_acl = NULL;
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#endif /* CONFIG_NFS_V4 */
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289
fs/nfs/nfs3acl.c
289
fs/nfs/nfs3acl.c
@ -10,179 +10,7 @@
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#define NFSDBG_FACILITY NFSDBG_PROC
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ssize_t nfs3_listxattr(struct dentry *dentry, char *buffer, size_t size)
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{
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struct inode *inode = dentry->d_inode;
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struct posix_acl *acl;
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int pos=0, len=0;
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# define output(s) do { \
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if (pos + sizeof(s) <= size) { \
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memcpy(buffer + pos, s, sizeof(s)); \
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pos += sizeof(s); \
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} \
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len += sizeof(s); \
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} while(0)
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acl = nfs3_proc_getacl(inode, ACL_TYPE_ACCESS);
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if (IS_ERR(acl))
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return PTR_ERR(acl);
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if (acl) {
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output("system.posix_acl_access");
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posix_acl_release(acl);
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}
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if (S_ISDIR(inode->i_mode)) {
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acl = nfs3_proc_getacl(inode, ACL_TYPE_DEFAULT);
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if (IS_ERR(acl))
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return PTR_ERR(acl);
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if (acl) {
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output("system.posix_acl_default");
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posix_acl_release(acl);
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}
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}
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# undef output
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if (!buffer || len <= size)
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return len;
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return -ERANGE;
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}
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ssize_t nfs3_getxattr(struct dentry *dentry, const char *name,
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void *buffer, size_t size)
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{
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struct inode *inode = dentry->d_inode;
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struct posix_acl *acl;
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int type, error = 0;
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if (strcmp(name, POSIX_ACL_XATTR_ACCESS) == 0)
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type = ACL_TYPE_ACCESS;
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else if (strcmp(name, POSIX_ACL_XATTR_DEFAULT) == 0)
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type = ACL_TYPE_DEFAULT;
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else
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return -EOPNOTSUPP;
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acl = nfs3_proc_getacl(inode, type);
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if (IS_ERR(acl))
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return PTR_ERR(acl);
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else if (acl) {
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if (type == ACL_TYPE_ACCESS && acl->a_count == 0)
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error = -ENODATA;
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else
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error = posix_acl_to_xattr(&init_user_ns, acl, buffer, size);
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posix_acl_release(acl);
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} else
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error = -ENODATA;
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return error;
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}
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int nfs3_setxattr(struct dentry *dentry, const char *name,
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const void *value, size_t size, int flags)
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{
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struct inode *inode = dentry->d_inode;
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struct posix_acl *acl;
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int type, error;
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if (strcmp(name, POSIX_ACL_XATTR_ACCESS) == 0)
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type = ACL_TYPE_ACCESS;
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else if (strcmp(name, POSIX_ACL_XATTR_DEFAULT) == 0)
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type = ACL_TYPE_DEFAULT;
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else
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return -EOPNOTSUPP;
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acl = posix_acl_from_xattr(&init_user_ns, value, size);
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if (IS_ERR(acl))
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return PTR_ERR(acl);
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error = nfs3_proc_setacl(inode, type, acl);
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posix_acl_release(acl);
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return error;
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}
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int nfs3_removexattr(struct dentry *dentry, const char *name)
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{
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struct inode *inode = dentry->d_inode;
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int type;
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if (strcmp(name, POSIX_ACL_XATTR_ACCESS) == 0)
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type = ACL_TYPE_ACCESS;
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else if (strcmp(name, POSIX_ACL_XATTR_DEFAULT) == 0)
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type = ACL_TYPE_DEFAULT;
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else
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return -EOPNOTSUPP;
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return nfs3_proc_setacl(inode, type, NULL);
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}
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static void __nfs3_forget_cached_acls(struct nfs_inode *nfsi)
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{
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if (!IS_ERR(nfsi->acl_access)) {
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posix_acl_release(nfsi->acl_access);
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nfsi->acl_access = ERR_PTR(-EAGAIN);
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}
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if (!IS_ERR(nfsi->acl_default)) {
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posix_acl_release(nfsi->acl_default);
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nfsi->acl_default = ERR_PTR(-EAGAIN);
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}
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}
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void nfs3_forget_cached_acls(struct inode *inode)
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{
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dprintk("NFS: nfs3_forget_cached_acls(%s/%ld)\n", inode->i_sb->s_id,
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inode->i_ino);
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spin_lock(&inode->i_lock);
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__nfs3_forget_cached_acls(NFS_I(inode));
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spin_unlock(&inode->i_lock);
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}
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static struct posix_acl *nfs3_get_cached_acl(struct inode *inode, int type)
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{
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struct nfs_inode *nfsi = NFS_I(inode);
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struct posix_acl *acl = ERR_PTR(-EINVAL);
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spin_lock(&inode->i_lock);
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switch(type) {
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case ACL_TYPE_ACCESS:
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acl = nfsi->acl_access;
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break;
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case ACL_TYPE_DEFAULT:
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acl = nfsi->acl_default;
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break;
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default:
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goto out;
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}
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if (IS_ERR(acl))
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acl = ERR_PTR(-EAGAIN);
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else
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acl = posix_acl_dup(acl);
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out:
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spin_unlock(&inode->i_lock);
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dprintk("NFS: nfs3_get_cached_acl(%s/%ld, %d) = %p\n", inode->i_sb->s_id,
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inode->i_ino, type, acl);
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return acl;
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}
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static void nfs3_cache_acls(struct inode *inode, struct posix_acl *acl,
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struct posix_acl *dfacl)
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{
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struct nfs_inode *nfsi = NFS_I(inode);
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dprintk("nfs3_cache_acls(%s/%ld, %p, %p)\n", inode->i_sb->s_id,
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inode->i_ino, acl, dfacl);
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spin_lock(&inode->i_lock);
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__nfs3_forget_cached_acls(NFS_I(inode));
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if (!IS_ERR(acl))
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nfsi->acl_access = posix_acl_dup(acl);
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if (!IS_ERR(dfacl))
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nfsi->acl_default = posix_acl_dup(dfacl);
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spin_unlock(&inode->i_lock);
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}
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struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type)
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struct posix_acl *nfs3_get_acl(struct inode *inode, int type)
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{
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struct nfs_server *server = NFS_SERVER(inode);
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struct page *pages[NFSACL_MAXPAGES] = { };
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@ -198,7 +26,6 @@ struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type)
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.rpc_argp = &args,
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.rpc_resp = &res,
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};
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struct posix_acl *acl;
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int status, count;
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if (!nfs_server_capable(inode, NFS_CAP_ACLS))
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@ -207,10 +34,6 @@ struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type)
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status = nfs_revalidate_inode(server, inode);
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if (status < 0)
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return ERR_PTR(status);
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acl = nfs3_get_cached_acl(inode, type);
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if (acl != ERR_PTR(-EAGAIN))
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return acl;
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acl = NULL;
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/*
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* Only get the access acl when explicitly requested: We don't
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@ -257,40 +80,41 @@ struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type)
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}
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if (res.acl_access != NULL) {
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if (posix_acl_equiv_mode(res.acl_access, NULL) == 0) {
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if (posix_acl_equiv_mode(res.acl_access, NULL) ||
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res.acl_access->a_count == 0) {
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posix_acl_release(res.acl_access);
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res.acl_access = NULL;
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}
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}
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nfs3_cache_acls(inode,
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(res.mask & NFS_ACL) ? res.acl_access : ERR_PTR(-EINVAL),
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(res.mask & NFS_DFACL) ? res.acl_default : ERR_PTR(-EINVAL));
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switch(type) {
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case ACL_TYPE_ACCESS:
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acl = res.acl_access;
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res.acl_access = NULL;
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break;
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if (res.mask & NFS_ACL)
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set_cached_acl(inode, ACL_TYPE_ACCESS, res.acl_access);
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else
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forget_cached_acl(inode, ACL_TYPE_ACCESS);
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case ACL_TYPE_DEFAULT:
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acl = res.acl_default;
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res.acl_default = NULL;
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if (res.mask & NFS_DFACL)
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set_cached_acl(inode, ACL_TYPE_DEFAULT, res.acl_default);
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else
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forget_cached_acl(inode, ACL_TYPE_DEFAULT);
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nfs_free_fattr(res.fattr);
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if (type == ACL_TYPE_ACCESS) {
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posix_acl_release(res.acl_default);
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return res.acl_access;
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} else {
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posix_acl_release(res.acl_access);
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return res.acl_default;
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}
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getout:
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posix_acl_release(res.acl_access);
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posix_acl_release(res.acl_default);
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nfs_free_fattr(res.fattr);
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if (status != 0) {
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posix_acl_release(acl);
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acl = ERR_PTR(status);
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}
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return acl;
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return ERR_PTR(status);
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}
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static int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl,
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struct posix_acl *dfacl)
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int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl,
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struct posix_acl *dfacl)
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{
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struct nfs_server *server = NFS_SERVER(inode);
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struct nfs_fattr *fattr;
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@ -353,7 +177,8 @@ static int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl,
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switch (status) {
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case 0:
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status = nfs_refresh_inode(inode, fattr);
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nfs3_cache_acls(inode, acl, dfacl);
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set_cached_acl(inode, ACL_TYPE_ACCESS, acl);
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set_cached_acl(inode, ACL_TYPE_DEFAULT, dfacl);
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break;
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case -EPFNOSUPPORT:
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case -EPROTONOSUPPORT:
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@ -373,33 +198,27 @@ static int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl,
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return status;
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}
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int nfs3_proc_setacl(struct inode *inode, int type, struct posix_acl *acl)
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int nfs3_set_acl(struct inode *inode, struct posix_acl *acl, int type)
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{
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struct posix_acl *alloc = NULL, *dfacl = NULL;
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int status;
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if (S_ISDIR(inode->i_mode)) {
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switch(type) {
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case ACL_TYPE_ACCESS:
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alloc = dfacl = nfs3_proc_getacl(inode,
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ACL_TYPE_DEFAULT);
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if (IS_ERR(alloc))
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goto fail;
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break;
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case ACL_TYPE_ACCESS:
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alloc = dfacl = get_acl(inode, ACL_TYPE_DEFAULT);
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if (IS_ERR(alloc))
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goto fail;
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break;
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case ACL_TYPE_DEFAULT:
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dfacl = acl;
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alloc = acl = nfs3_proc_getacl(inode,
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ACL_TYPE_ACCESS);
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if (IS_ERR(alloc))
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goto fail;
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break;
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default:
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return -EINVAL;
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case ACL_TYPE_DEFAULT:
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dfacl = acl;
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alloc = acl = get_acl(inode, ACL_TYPE_ACCESS);
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if (IS_ERR(alloc))
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goto fail;
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break;
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}
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} else if (type != ACL_TYPE_ACCESS)
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return -EINVAL;
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}
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if (acl == NULL) {
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alloc = acl = posix_acl_from_mode(inode->i_mode, GFP_KERNEL);
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@ -417,24 +236,24 @@ int nfs3_proc_setacl(struct inode *inode, int type, struct posix_acl *acl)
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int nfs3_proc_set_default_acl(struct inode *dir, struct inode *inode,
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umode_t mode)
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{
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struct posix_acl *dfacl, *acl;
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int error = 0;
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struct posix_acl *default_acl, *acl;
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int error;
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dfacl = nfs3_proc_getacl(dir, ACL_TYPE_DEFAULT);
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if (IS_ERR(dfacl)) {
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error = PTR_ERR(dfacl);
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error = posix_acl_create(dir, &mode, &default_acl, &acl);
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if (error)
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return (error == -EOPNOTSUPP) ? 0 : error;
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}
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if (!dfacl)
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return 0;
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acl = posix_acl_dup(dfacl);
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error = __posix_acl_create(&acl, GFP_KERNEL, &mode);
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if (error < 0)
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goto out_release_dfacl;
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error = nfs3_proc_setacls(inode, acl, S_ISDIR(inode->i_mode) ?
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dfacl : NULL);
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posix_acl_release(acl);
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out_release_dfacl:
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posix_acl_release(dfacl);
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error = nfs3_proc_setacls(inode, acl, default_acl);
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if (acl)
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posix_acl_release(acl);
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if (default_acl)
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posix_acl_release(default_acl);
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return error;
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}
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const struct xattr_handler *nfs3_xattr_handlers[] = {
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&posix_acl_access_xattr_handler,
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&posix_acl_default_xattr_handler,
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NULL,
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};
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@ -317,8 +317,8 @@ static int
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nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
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int flags)
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{
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struct posix_acl *default_acl, *acl;
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struct nfs3_createdata *data;
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umode_t mode = sattr->ia_mode;
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int status = -ENOMEM;
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dprintk("NFS call create %pd\n", dentry);
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@ -340,7 +340,9 @@ nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
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data->arg.create.verifier[1] = cpu_to_be32(current->pid);
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}
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sattr->ia_mode &= ~current_umask();
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status = posix_acl_create(dir, &sattr->ia_mode, &default_acl, &acl);
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if (status)
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goto out;
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for (;;) {
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status = nfs3_do_create(dir, dentry, data);
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@ -366,7 +368,7 @@ nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
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}
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if (status != 0)
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goto out;
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goto out_release_acls;
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/* When we created the file with exclusive semantics, make
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* sure we set the attributes afterwards. */
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@ -385,9 +387,14 @@ nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
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nfs_post_op_update_inode(dentry->d_inode, data->res.fattr);
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dprintk("NFS reply setattr (post-create): %d\n", status);
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if (status != 0)
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goto out;
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goto out_release_acls;
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}
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status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode);
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status = nfs3_proc_setacls(dentry->d_inode, acl, default_acl);
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out_release_acls:
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posix_acl_release(acl);
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posix_acl_release(default_acl);
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out:
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nfs3_free_createdata(data);
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dprintk("NFS reply create: %d\n", status);
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@ -572,18 +579,20 @@ nfs3_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page,
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static int
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nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
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{
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struct posix_acl *default_acl, *acl;
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struct nfs3_createdata *data;
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umode_t mode = sattr->ia_mode;
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int status = -ENOMEM;
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dprintk("NFS call mkdir %pd\n", dentry);
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sattr->ia_mode &= ~current_umask();
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data = nfs3_alloc_createdata();
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if (data == NULL)
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goto out;
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status = posix_acl_create(dir, &sattr->ia_mode, &default_acl, &acl);
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if (status)
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goto out;
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data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKDIR];
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data->arg.mkdir.fh = NFS_FH(dir);
|
||||
data->arg.mkdir.name = dentry->d_name.name;
|
||||
@ -592,9 +601,13 @@ nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
|
||||
|
||||
status = nfs3_do_create(dir, dentry, data);
|
||||
if (status != 0)
|
||||
goto out;
|
||||
goto out_release_acls;
|
||||
|
||||
status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode);
|
||||
status = nfs3_proc_setacls(dentry->d_inode, acl, default_acl);
|
||||
|
||||
out_release_acls:
|
||||
posix_acl_release(acl);
|
||||
posix_acl_release(default_acl);
|
||||
out:
|
||||
nfs3_free_createdata(data);
|
||||
dprintk("NFS reply mkdir: %d\n", status);
|
||||
@ -691,19 +704,21 @@ static int
|
||||
nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
|
||||
dev_t rdev)
|
||||
{
|
||||
struct posix_acl *default_acl, *acl;
|
||||
struct nfs3_createdata *data;
|
||||
umode_t mode = sattr->ia_mode;
|
||||
int status = -ENOMEM;
|
||||
|
||||
dprintk("NFS call mknod %pd %u:%u\n", dentry,
|
||||
MAJOR(rdev), MINOR(rdev));
|
||||
|
||||
sattr->ia_mode &= ~current_umask();
|
||||
|
||||
data = nfs3_alloc_createdata();
|
||||
if (data == NULL)
|
||||
goto out;
|
||||
|
||||
status = posix_acl_create(dir, &sattr->ia_mode, &default_acl, &acl);
|
||||
if (status)
|
||||
goto out;
|
||||
|
||||
data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKNOD];
|
||||
data->arg.mknod.fh = NFS_FH(dir);
|
||||
data->arg.mknod.name = dentry->d_name.name;
|
||||
@ -731,8 +746,13 @@ nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
|
||||
|
||||
status = nfs3_do_create(dir, dentry, data);
|
||||
if (status != 0)
|
||||
goto out;
|
||||
status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode);
|
||||
goto out_release_acls;
|
||||
|
||||
status = nfs3_proc_setacls(dentry->d_inode, acl, default_acl);
|
||||
|
||||
out_release_acls:
|
||||
posix_acl_release(acl);
|
||||
posix_acl_release(default_acl);
|
||||
out:
|
||||
nfs3_free_createdata(data);
|
||||
dprintk("NFS reply mknod: %d\n", status);
|
||||
@ -904,20 +924,28 @@ static const struct inode_operations nfs3_dir_inode_operations = {
|
||||
.permission = nfs_permission,
|
||||
.getattr = nfs_getattr,
|
||||
.setattr = nfs_setattr,
|
||||
.listxattr = nfs3_listxattr,
|
||||
.getxattr = nfs3_getxattr,
|
||||
.setxattr = nfs3_setxattr,
|
||||
.removexattr = nfs3_removexattr,
|
||||
.listxattr = generic_listxattr,
|
||||
.getxattr = generic_getxattr,
|
||||
.setxattr = generic_setxattr,
|
||||
.removexattr = generic_removexattr,
|
||||
#ifdef CONFIG_NFS_V3_ACL
|
||||
.get_acl = nfs3_get_acl,
|
||||
.set_acl = nfs3_set_acl,
|
||||
#endif
|
||||
};
|
||||
|
||||
static const struct inode_operations nfs3_file_inode_operations = {
|
||||
.permission = nfs_permission,
|
||||
.getattr = nfs_getattr,
|
||||
.setattr = nfs_setattr,
|
||||
.listxattr = nfs3_listxattr,
|
||||
.getxattr = nfs3_getxattr,
|
||||
.setxattr = nfs3_setxattr,
|
||||
.removexattr = nfs3_removexattr,
|
||||
.listxattr = generic_listxattr,
|
||||
.getxattr = generic_getxattr,
|
||||
.setxattr = generic_setxattr,
|
||||
.removexattr = generic_removexattr,
|
||||
#ifdef CONFIG_NFS_V3_ACL
|
||||
.get_acl = nfs3_get_acl,
|
||||
.set_acl = nfs3_set_acl,
|
||||
#endif
|
||||
};
|
||||
|
||||
const struct nfs_rpc_ops nfs_v3_clientops = {
|
||||
@ -965,7 +993,7 @@ const struct nfs_rpc_ops nfs_v3_clientops = {
|
||||
.commit_rpc_prepare = nfs3_proc_commit_rpc_prepare,
|
||||
.commit_done = nfs3_commit_done,
|
||||
.lock = nfs3_proc_lock,
|
||||
.clear_acl_cache = nfs3_forget_cached_acls,
|
||||
.clear_acl_cache = forget_all_cached_acls,
|
||||
.close_context = nfs_close_context,
|
||||
.have_delegation = nfs3_have_delegation,
|
||||
.return_delegation = nfs3_return_delegation,
|
||||
|
||||
@ -12,6 +12,9 @@ static struct nfs_subversion nfs_v3 = {
|
||||
.rpc_vers = &nfs_version3,
|
||||
.rpc_ops = &nfs_v3_clientops,
|
||||
.sops = &nfs_sops,
|
||||
#ifdef CONFIG_NFS_V3_ACL
|
||||
.xattr = nfs3_xattr_handlers,
|
||||
#endif
|
||||
};
|
||||
|
||||
static int __init init_nfs_v3(void)
|
||||
|
||||
@ -154,10 +154,6 @@ struct nfs_inode {
|
||||
struct rb_root access_cache;
|
||||
struct list_head access_cache_entry_lru;
|
||||
struct list_head access_cache_inode_lru;
|
||||
#ifdef CONFIG_NFS_V3_ACL
|
||||
struct posix_acl *acl_access;
|
||||
struct posix_acl *acl_default;
|
||||
#endif
|
||||
|
||||
/*
|
||||
* This is the cookie verifier used for NFSv3 readdir
|
||||
@ -564,23 +560,17 @@ extern int nfs_readpage_async(struct nfs_open_context *, struct inode *,
|
||||
* linux/fs/nfs3proc.c
|
||||
*/
|
||||
#ifdef CONFIG_NFS_V3_ACL
|
||||
extern struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type);
|
||||
extern int nfs3_proc_setacl(struct inode *inode, int type,
|
||||
struct posix_acl *acl);
|
||||
extern int nfs3_proc_set_default_acl(struct inode *dir, struct inode *inode,
|
||||
umode_t mode);
|
||||
extern void nfs3_forget_cached_acls(struct inode *inode);
|
||||
extern struct posix_acl *nfs3_get_acl(struct inode *inode, int type);
|
||||
extern int nfs3_set_acl(struct inode *inode, struct posix_acl *acl, int type);
|
||||
extern int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl,
|
||||
struct posix_acl *dfacl);
|
||||
extern const struct xattr_handler *nfs3_xattr_handlers[];
|
||||
#else
|
||||
static inline int nfs3_proc_set_default_acl(struct inode *dir,
|
||||
struct inode *inode,
|
||||
umode_t mode)
|
||||
static inline int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl,
|
||||
struct posix_acl *dfacl)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static inline void nfs3_forget_cached_acls(struct inode *inode)
|
||||
{
|
||||
}
|
||||
#endif /* CONFIG_NFS_V3_ACL */
|
||||
|
||||
/*
|
||||
|
||||
@ -191,6 +191,10 @@ static inline int posix_acl_create(struct inode *inode, umode_t *mode,
|
||||
*default_acl = *acl = NULL;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static inline void forget_all_cached_acls(struct inode *inode)
|
||||
{
|
||||
}
|
||||
#endif /* CONFIG_FS_POSIX_ACL */
|
||||
|
||||
struct posix_acl *get_acl(struct inode *inode, int type);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user