static int v9fs_set_acl(struct p9_fid *fid, int type, struct posix_acl *acl) { int retval; char *name; size_t size; void *buffer; if (!acl) return 0; /* Set a setxattr request to server */ size = posix_acl_xattr_size(acl->a_count); buffer = kmalloc(size, GFP_KERNEL); if (!buffer) return -ENOMEM; retval = posix_acl_to_xattr(&init_user_ns, acl, buffer, size); if (retval < 0) goto err_free_out; switch (type) { case ACL_TYPE_ACCESS: name = XATTR_NAME_POSIX_ACL_ACCESS; break; case ACL_TYPE_DEFAULT: name = XATTR_NAME_POSIX_ACL_DEFAULT; break; default: BUG(); } retval = v9fs_fid_xattr_set(fid, name, buffer, size, 0); err_free_out: kfree(buffer); return retval; }
/* * v9fs_xattr_set() * * Create, replace or remove an extended attribute for this inode. Buffer * is NULL to remove an existing extended attribute, and non-NULL to * either replace an existing extended attribute, or create a new extended * attribute. The flags XATTR_REPLACE and XATTR_CREATE * specify that an extended attribute must exist and must not exist * previous to the call, respectively. * * Returns 0, or a negative error number on failure. */ int v9fs_xattr_set(struct dentry *dentry, const char *name, const void *value, size_t value_len, int flags) { struct p9_fid *fid = v9fs_fid_lookup(dentry); if (IS_ERR(fid)) return PTR_ERR(fid); return v9fs_fid_xattr_set(fid, name, value, value_len, flags); }