64 lines
2.7 KiB
Go
64 lines
2.7 KiB
Go
// Mgmt
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// Copyright (C) 2013-2024+ James Shubin and the project contributors
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// Written by James Shubin <james@shubin.ca> and the project contributors
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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//
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// Additional permission under GNU GPL version 3 section 7
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//
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// If you modify this program, or any covered work, by linking or combining it
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// with embedded mcl code and modules (and that the embedded mcl code and
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// modules which link with this program, contain a copy of their source code in
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// the authoritative form) containing parts covered by the terms of any other
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// license, the licensors of this program grant you additional permission to
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// convey the resulting work. Furthermore, the licensors of this program grant
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// the original author, James Shubin, additional permission to update this
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// additional permission if he deems it necessary to achieve the goals of this
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// additional permission.
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package graph
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import (
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"fmt"
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"os"
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"path"
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"github.com/purpleidea/mgmt/util/errwrap"
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)
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// varDir returns the path to a working directory for the resource. It will try
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// and create the directory first, and return an error if this failed. The dir
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// should be cleaned up by the resource on Close if it wishes to discard the
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// contents. If it does not, then a future resource with the same kind and name
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// may see those contents in that directory. The resource should clean up the
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// contents before use if it is important that nothing exist. It is always
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// possible that contents could remain after an abrupt crash, so do not store
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// overly sensitive data unless you're aware of the risks.
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func (obj *State) varDir(extra string) (string, error) {
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// Using extra adds additional dirs onto our namespace. An empty extra
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// adds no additional directories.
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if obj.Prefix == "" { // safety
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return "", fmt.Errorf("the VarDir prefix is empty")
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}
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// an empty string at the end has no effect
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p := fmt.Sprintf("%s/", path.Join(obj.Prefix, extra))
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if err := os.MkdirAll(p, 0770); err != nil {
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return "", errwrap.Wrapf(err, "can't create prefix in: %s", p)
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}
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// returns with a trailing slash as per the mgmt file res convention
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return p, nil
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}
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