#pragma once

#include "types.hh"


namespace nix {


/* Open (possibly create) a lock file and return the file descriptor.
   -1 is returned if create is false and the lock could not be opened
   because it doesn't exist.  Any other error throws an exception. */
int openLockFile(const Path & path, bool create);

/* Delete an open lock file. */
void deleteLockFile(const Path & path, int fd);

enum LockType { ltRead, ltWrite, ltNone };

bool lockFile(int fd, LockType lockType, bool wait);


class PathLocks 
{
private:
    typedef std::pair<int, Path> FDPair;
    list<FDPair> fds;
    bool deletePaths;

public:
    PathLocks();
    PathLocks(const PathSet & paths,
        const string & waitMsg = "");
    bool lockPaths(const PathSet & _paths,
        const string & waitMsg = "",
        bool wait = true);
    ~PathLocks();
    void unlock();
    void setDeletion(bool deletePaths);
};


bool pathIsLockedByMe(const Path & path);


}
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<tr><td><span title='2024-11-11 07:28:33 +0100'>2024-11-11</span></td><td><a href='/guix/commit/gnu/build/hurd-boot.scm?id=f2cefd700d6fb6ee26a9289b8194524062d2778f'>hurd-boot: Support second boot.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/build/hurd-boot.scm (boot-hurd-system): Check for stale shepherd socket
and remove it.  Be chattier about /hurd symlink replacement.

Change-Id: I5e528c131ebeadb7ebc9727336a0f9301af3e68e
</span></span></td><td>Janneke Nieuwenhuizen</td></tr>
<tr><td><span title='2024-10-15 11:13:48 +0200'>2024-10-15</span></td><td><a href='/guix/commit/gnu/build/hurd-boot.scm?id=7c93145d9e027cb571bf7634192dfae5468ecde2'>hurd-boot: Support system init: Create essential device nodes.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/build/hurd-boot.scm (make-hurd-device-nodes): Cater for existing
directories (dev, servers).
(set-hurd-device-translators): Remove /servers/socket/1, that is created by
libexec/console-run.  Cater for nonexistent /dev/console.
(boot-hurd-system): Call make-hurd-device-nodes on initial run.
</span></span></td><td>Janneke Nieuwenhuizen</td></tr>
<tr><td><span title='2023-10-01 15:51:23 +0200'>2023-10-01</span></td><td><a href='/guix/commit/gnu/build/hurd-boot.scm?id=0a1af11ff82254b369fa3ac8a9af2d97bb877ed0'>hurd-boot: Setup/dev/hdX, /dev/hdXsY IDE device node translators.</a><span class='msg-avail'>...<span class='msg-tooltip'>The gnumach builtin IDE hd devices are still used, unless booting with
"noide".

* gnu/build/hurd-boot.scm (set-hurd-device-translators): Create /dev/hd{0..3},
/dev/hd{0..3}s{0..3}.
</span></span></td><td>Janneke Nieuwenhuizen</td></tr>