#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='2018-07-22 17:54:54 +0200'>2018-07-22</span></td><td><a href='/guix/commit/gnu/packages/pcre.scm?id=08b87ab0dfa4bae0eb57f3d8915f655bf20d94fc'>gnu: pcre: Update to 8.42.</a><span class='msg-avail'>...</span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2018-07-19 00:53:10 +0200'>2018-07-19</span></td><td><a href='/guix/commit/gnu/packages/pcre.scm?id=50849734e986a5824bcca20fe64b2886f8f1a42b'>gnu: pcre: Install static libraries to separate output.</a><span class='msg-avail'>...</span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2018-02-28 18:23:31 +0100'>2018-02-28</span></td><td><a href='/guix/commit/gnu/packages/pcre.scm?id=8297ff0f931a677c51ca7c64a844a55cd6cd2ef4'>gnu: pcre2: Update to 10.31.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2018-01-19 23:59:20 -0500'>2018-01-19</span></td><td><a href='/guix/commit/gnu/packages/pcre.scm?id=e074a655dd6497daafbd62737e3b63f3d5aa7985'>Merge branch 'master' into core-updates</a></td><td>Mark H Weaver</td></tr>
<tr><td><span title='2018-01-13 21:25:40 +0100'>2018-01-13</span></td><td><a href='/guix/commit/gnu/packages/pcre.scm?id=265c31f5a377851eb583dfeaaaae6132e085cfac'>gnu: pcre: Use HTTPS for home pages.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2017-10-01 22:16:41 +0300'>2017-10-01</span></td><td><a href='/guix/commit/gnu/packages/pcre.scm?id=0b7f9806dbde1a7c1ded4218e499319d7eafbe7a'>gnu: pcre: Update to 8.41.</a><span class='msg-avail'>...</span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2017-07-23 03:42:12 -0400'>2017-07-23</span></td><td><a href='/guix/commit/gnu/packages/pcre.scm?id=6c1a317e29c45e85e3a0e050612cdefe470b100c'>Merge branch 'master' into core-updates</a></td><td>Leo Famulari</td></tr>
<tr><td><span title='2017-07-20 08:26:40 -0400'>2017-07-20</span></td><td><a href='/guix/commit/gnu/packages/pcre.scm?id=426b0b898f70a58133d80779980f163a5761686e'>gnu: pcre: Update replacement to 8.41 [fixes CVE-2017-{7244,7245,7246}].</a><span class='msg-avail'>...</span></td><td>Leo Famulari</td></tr>
<tr><td><span title='2017-07-03 23:51:22 +0200'>2017-07-03</span></td><td><a href='/guix/commit/gnu/packages/pcre.scm?id=d5ec5ed7197d121130af6953378bcfd8929a9754'>packages: Mark 'replacement' as an "innate" field.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2017-05-24 12:05:47 +0200'>2017-05-24</span></td><td><a href='/guix/commit/gnu/packages/pcre.scm?id=d1a914082b7e53636f9801769ef96218b2125c4b'>Merge branch 'master' into core-updates</a></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2017-05-07 17:46:00 -0400'>2017-05-07</span></td><td><a href='/guix/commit/gnu/packages/pcre.scm?id=af6e2385b3125924f34188d81370dd71cdbe9ddc'>gnu: pcre2: Fix build configuration for pcre2.</a><span class='msg-avail'>...</span></td><td>Leo Famulari</td></tr>
<tr><td><span title='2017-05-07 17:46:00 -0400'>2017-05-07</span></td><td><a href='/guix/commit/gnu/packages/pcre.scm?id=37f46a4bc51886c0d0df797bfbb13a50fe647567'>gnu: pcre2: Fix CVE-2017-8786.</a><span class='msg-avail'>...</span></td><td>Leo Famulari</td></tr>
<tr><td><span title='2017-04-10 23:54:46 +0200'>2017-04-10</span></td><td><a href='/guix/commit/gnu/packages/pcre.scm?id=a97f0ee1368499dc40ea30002fcb6e06c7880acb'>gnu: pcre: Patch CVE-2017-7186.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2017-04-10 23:54:46 +0200'>2017-04-10</span></td><td><a href='/guix/commit/gnu/packages/pcre.scm?id=18d0cec29e22cdbc27c486129d1a1425de27f03f'>gnu: pcre2: Patch CVE-2017-7186.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>