#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='2019-05-13 10:46:03 +0200'>2019-05-13</span></td><td><a href='/guix/commit/doc/local.mk?id=3bac7e6495934de9913e6186d954d1331883e064'>doc: Add Russian translation.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-05-04 23:07:38 +0200'>2019-05-04</span></td><td><a href='/guix/commit/doc/local.mk?id=227ff747a640dd017bcca087e14b244afc1bd958'>doc: Warn about missing entries in htmlxref.cnf.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-04-24 00:27:51 +0200'>2019-04-24</span></td><td><a href='/guix/commit/doc/local.mk?id=de712e5286137c297de8270d3396b8daa9a93c66'>doc: Add Simplified Chinese translation.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-04-23 23:56:16 +0200'>2019-04-23</span></td><td><a href='/guix/commit/doc/local.mk?id=6227e1b7477b71f31ea3bf8a74c32fe7238dcece'>doc: Add Spanish translation.</a><span class='msg-avail'>...</span></td><td>Miguel Ángel Arruga Vivas</td></tr>
<tr><td><span title='2019-03-13 23:12:43 +0100'>2019-03-13</span></td><td><a href='/guix/commit/doc/local.mk?id=e1c15e8b8e25e14c253ff1212e289565736f6ea7'>doc: Document the graphical installer some more.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-11-01 12:36:47 +0100'>2018-11-01</span></td><td><a href='/guix/commit/doc/local.mk?id=1e40e70bfebba47ccea354ddf862276d2c4223ea'>doc: Add German translation.</a><span class='msg-avail'>...</span></td><td>Julien Lepiller</td></tr>
<tr><td><span title='2018-04-29 21:42:14 +0200'>2018-04-29</span></td><td><a href='/guix/commit/doc/local.mk?id=39764ef893b7b65a8ce55e13746fed8fd0bad6e0'>build: Use only one domain for guix-manual.</a><span class='msg-avail'>...</span></td><td>Julien Lepiller</td></tr>
<tr><td><span title='2018-04-25 23:11:53 +0200'>2018-04-25</span></td><td><a href='/guix/commit/doc/local.mk?id=06c4778ae290c9f8de5f8ef1683cec14de8f2ebc'>build: Add silent rules for Texinfo xref translation.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-04-19 21:32:07 +0200'>2018-04-19</span></td><td><a href='/guix/commit/doc/local.mk?id=bf5c74e713c623cbb0001eb36af6998e92243482'>gnu: doc: Add French documentation.</a><span class='msg-avail'>...</span></td><td>Julien Lepiller</td></tr>
<tr><td><span title='2018-04-19 21:30:30 +0200'>2018-04-19</span></td><td><a href='/guix/commit/doc/local.mk?id=b9fe8fd662180e64156d2b95a671242c20f0acfc'>gnu: doc: Allow documentation to be translated.</a><span class='msg-avail'>...</span></td><td>Julien Lepiller</td></tr>
<tr><td><span title='2018-01-20 00:45:29 +0100'>2018-01-20</span></td><td><a href='/guix/commit/doc/local.mk?id=523790d11d4d4d786e7b2ad19d3333e9fffb016d'>build: Declare “doc/guix.texi“ dependencies.</a><span class='msg-avail'>...</span></td><td>Mathieu Lirzin</td></tr>
<tr><td><span title='2017-01-12 14:59:36 +0100'>2017-01-12</span></td><td><a href='/guix/commit/doc/local.mk?id=409c5733224f714096d0e2a665b85d64c96c7088'>build: Remove reference to 'doc/emacs.texi'.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2016-05-24 13:07:19 +0200'>2016-05-24</span></td><td><a href='/guix/commit/doc/local.mk?id=c0d2e7b197a3c511eb1bf60b61ee6fdc673e36f4'>build: Use "%D%" in Makefile fragments.</a><span class='msg-avail'>...</span></td><td>Mathieu Lirzin</td></tr>
<tr><td><span title='2016-04-21 18:47:50 +0200'>2016-04-21</span></td><td><a href='/guix/commit/doc/local.mk?id=03d0e2d2b9f9cc3be8e871842c11df9453e903bd'>build: Move 'Makefile' fragments to subdirectories.</a><span class='msg-avail'>...</span></td><td>Mathieu Lirzin</td></tr>