#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='2024-01-08 21:22:44 +0300'>2024-01-08</span></td><td><a href='/guix/commit/gnu/image.scm?id=519e1e3eb88ec532fc83ebb742d9919269b57c87'>scripts: system: Build layered images.</a><span class='msg-avail'>...</span></td><td>Oleg Pykhalov</td></tr>
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<tr><td><span title='2022-09-24 14:20:36 +0200'>2022-09-24</span></td><td><a href='/guix/commit/gnu/image.scm?id=c009c286a23f48b56731c3e7bc4875a9e88857c4'>image: Make the operating-system field mandatory.</a><span class='msg-avail'>...</span></td><td>Mathieu Othacehe</td></tr>
<tr><td><span title='2022-09-07 14:26:34 +0200'>2022-09-07</span></td><td><a href='/guix/commit/gnu/image.scm?id=0edb79b2a91947fd2abec420152cb46b3a4524b9'>image: Use #true and #false.</a><span class='msg-avail'>...</span></td><td>Mathieu Othacehe</td></tr>
<tr><td><span title='2022-09-07 14:24:52 +0200'>2022-09-07</span></td><td><a href='/guix/commit/gnu/image.scm?id=a1fb85a539f14e50b1d81e2bb78eeab60237eb7b'>image: Use a default size partition value.</a><span class='msg-avail'>...</span></td><td>Mathieu Othacehe</td></tr>
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<tr><td><span title='2022-08-30 19:29:58 +0200'>2022-08-30</span></td><td><a href='/guix/commit/gnu/image.scm?id=0518a88a4e417d6369859ff1da6448e1a6e693da'>image: Remove an unused field.</a><span class='msg-avail'>...</span></td><td>Mathieu Othacehe</td></tr>
<tr><td><span title='2022-08-30 19:29:58 +0200'>2022-08-30</span></td><td><a href='/guix/commit/gnu/image.scm?id=bce7a28a0a38da41fca91cfdbf7ae0fe14833f2a'>image: Perform more sanitizing.</a><span class='msg-avail'>...</span></td><td>Mathieu Othacehe</td></tr>
<tr><td><span title='2022-07-01 12:10:29 +0200'>2022-07-01</span></td><td><a href='/guix/commit/gnu/image.scm?id=0dab106a6af36eaebfd533d3e38c1275deb85935'>image: Add sanitizers for 'format' and 'partition-table-type'.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-07-01 12:10:28 +0200'>2022-07-01</span></td><td><a href='/guix/commit/gnu/image.scm?id=9f530ef38a23caa1136f93cda45d396ce8fe1569'>image: Add default value for partition initializer.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-05-25 09:27:25 +0200'>2022-05-25</span></td><td><a href='/guix/commit/gnu/image.scm?id=dab819d5c4c55609efae098c8e3c2f2757c34e5b'>Move (gnu platform) and (gnu platforms ...) to guix/.</a><span class='msg-avail'>...</span></td><td>Josselin Poiret</td></tr>
<tr><td><span title='2021-12-23 10:53:59 +0100'>2021-12-23</span></td><td><a href='/guix/commit/gnu/image.scm?id=dcc843a716807768c446983ad3406211e28e5f3d'>image: Add a shared-network? field.</a><span class='msg-avail'>...</span></td><td>Mathieu Othacehe</td></tr>
<tr><td><span title='2021-12-23 10:53:59 +0100'>2021-12-23</span></td><td><a href='/guix/commit/gnu/image.scm?id=594e9428c5ece0ccba1f57810adedefee58ca4cc'>image: Add a shared-store? field.</a><span class='msg-avail'>...</span></td><td>Mathieu Othacehe</td></tr>
<tr><td><span title='2021-11-12 12:06:58 +0000'>2021-11-12</span></td><td><a href='/guix/commit/gnu/image.scm?id=096a2bf8c59a955c634cc838e7f7111941c07b37'>image: Support generating GPT images via `partition-table-type`.</a><span class='msg-avail'>...</span></td><td>Ryan Sundberg</td></tr>
<tr><td><span title='2021-10-11 12:05:39 +0000'>2021-10-11</span></td><td><a href='/guix/commit/gnu/image.scm?id=d5073fd113c621fe0b55382f7dd336ee118e759f'>gnu: Add platform support.</a><span class='msg-avail'>...</span></td><td>Mathieu Othacehe</td></tr>