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bircni
c5f674111a
Reverts #1126, #1125, #1124, #1123 and #1122. `go.mod` keeps the Go 1.26 line with toolchain `go1.26.9` (instead of the original `go1.26.6`) so the security fix from #1131 isn't lost. reopens #69 reopens #141 reopens #162 reopens #172 reopens #197 reopens #232 reopens #240 reopens #246 reopens #323 reopens #325 reopens #326 reopens #328 reopens #344 reopens #351 reopens #373 reopens #403 reopens #406 reopens #417 reopens #430 reopens #457 reopens #480 reopens #482 reopens #489 reopens #490 reopens #498 reopens #500 reopens #504 reopens #510 reopens #516 reopens #523 reopens #556 reopens #560 reopens #569 reopens #571 reopens #602 reopens #632 reopens #633 reopens #643 reopens #666 reopens #670 reopens #672 reopens #677 reopens #683 reopens #697 reopens #726 reopens #737 reopens #770 reopens #779 reopens #804 reopens #817 reopens #831 reopens #833 reopens #834 reopens #908 reopens #966 reopens #1023 reopens #1029 reopens #1032 reopens #1050 reopens #1052 reopens #1069 reopens #1073 reopens #1087 reopens #1091 reopens #1094 reopens #1110 reopens #1115 reopens #1116 reopens #1118 Reviewed-on: https://gitea.com/gitea/tea/pulls/1146 Reviewed-by: TheFox0x7 <95654+thefox0x7@noreply.gitea.com>
86 lines
2.3 KiB
Go
86 lines
2.3 KiB
Go
// Copyright 2026 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package config
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import (
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"fmt"
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"sync"
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"time"
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"gitea.dev/tea/modules/filelock"
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)
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const (
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// LockTimeout is the default timeout for acquiring the config file lock.
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LockTimeout = 5 * time.Second
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// mutexPollInterval is how often to retry acquiring the in-process mutex.
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mutexPollInterval = 10 * time.Millisecond
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)
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// configMutex protects in-process concurrent access to the config.
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var configMutex sync.Mutex
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// acquireConfigLock acquires both the in-process mutex and a file lock.
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// Returns an unlock function that must be called to release both locks.
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// The timeout applies to acquiring the file lock; the mutex acquisition
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// uses the same timeout via a TryLock loop.
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func acquireConfigLock(lockPath string, timeout time.Duration) (unlock func() error, err error) {
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// Try to acquire mutex with timeout
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deadline := time.Now().Add(timeout)
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for {
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if configMutex.TryLock() {
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break
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}
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if time.Now().After(deadline) {
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return nil, fmt.Errorf("timeout waiting for config mutex")
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}
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time.Sleep(mutexPollInterval)
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}
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// Mutex acquired, now try file lock
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remaining := max(time.Until(deadline), 0)
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locker := filelock.New(lockPath, remaining)
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fileUnlock, err := locker.Acquire()
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if err != nil {
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configMutex.Unlock()
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return nil, err
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}
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// Return unlock function
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return func() error {
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unlockErr := fileUnlock()
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configMutex.Unlock()
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return unlockErr
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}, nil
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}
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// getConfigLockPath returns the path to the lock file for the config.
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func getConfigLockPath() string {
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return GetConfigPath() + ".lock"
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}
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// withConfigLock executes the given function while holding the config lock.
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// It acquires the lock, reloads the config from disk, executes fn, and releases the lock.
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func withConfigLock(fn func() error) (retErr error) {
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lockPath := getConfigLockPath()
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unlock, err := acquireConfigLock(lockPath, LockTimeout)
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if err != nil {
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return fmt.Errorf("failed to acquire config lock: %w", err)
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}
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defer func() {
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if unlockErr := unlock(); unlockErr != nil && retErr == nil {
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retErr = fmt.Errorf("failed to release config lock: %w", unlockErr)
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}
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}()
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// Reload config from disk to get latest state
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if err := reloadConfigFromDisk(); err != nil {
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return err
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}
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return fn()
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}
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