#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);


}
><td class='sub'>Wojtek's customized Guix</td><td class='sub right'></td></tr></table>
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<tr><td><span title='2023-04-28 19:50:36 +0200'>2023-04-28</span></td><td><a href='/guix/commit/tests/guix-build.sh?id=5c26e69118128f6ef162cabddfe5726f03abe4ae'>tests: guix-build.sh: Don't use hidden gcc for transformation tests.</a><span class='msg-avail'>...<span class='msg-tooltip'>* tests/guix-build.sh: Do not try to rewrite gcc, it is hidden and so will not
be rewritten, as per eee95b5a879b7096dffd533f24107cf8926b621e.  Instead, try
to build grep with coreutils rewritten to hello.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Josselin Poiret</td></tr>
<tr><td><span title='2023-04-21 16:16:38 +0200'>2023-04-21</span></td><td><a href='/guix/commit/tests/guix-build.sh?id=37dd69b44511dc73eb04bdebe8d82c9a0386338e'>tests: Fix checks for expected failures.</a><span class='msg-avail'>...<span class='msg-tooltip'>Addresses &lt;https://issues.guix.gnu.org/62406&gt;.

With 'set -e', a return status inverted with '!' does not cause the shell to
exit immediately.  Instead use '&amp;&amp; false' to indicate an expected failure.

* tests/guix-archive.sh, tests/guix-build-branch.sh, tests/guix-build.sh,
tests/guix-daemon.sh, tests/guix-download.sh,
tests/guix-environment-container.sh, tests/guix-environment.sh,
tests/guix-gc.sh, tests/guix-git-authenticate.sh, tests/guix-graph.sh,
tests/guix-hash.sh, tests/guix-home.sh, tests/guix-pack-relocatable.sh,
tests/guix-pack.sh, tests/guix-package-aliases.sh, tests/guix-package-net.sh,
tests/guix-package.sh, tests/guix-refresh.sh, tests/guix-shell.sh,
tests/guix-style.sh, tests/guix-system.sh: Replace uses of '! ...' with
'... &amp;&amp; false' or `test ! ...` as appropriate.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Eric Bavier</td></tr>
<tr><td><span title='2022-02-18 14:14:38 +0100'>2022-02-18</span></td><td><a href='/guix/commit/tests/guix-build.sh?id=0ca26437cb36822f9f74ee1a6dbc714477378b13'>guix build: Warn when attempting to build an unsupported package.</a><span class='msg-avail'>...<span class='msg-tooltip'>Fixes &lt;https://issues.guix.gnu.org/51801&gt;.
Reported by Maxim Cournoyer &lt;maxim.cournoyer@gmail.com&gt;.

* guix/scripts/build.scm (options-&gt;derivations)[warn-if-unsupported]:
New procedure.
[compute-derivation]: Use it.
* tests/guix-build.sh: Add test.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-11-08 09:06:14 +0200'>2021-11-08</span></td><td><a href='/guix/commit/tests/guix-build.sh?id=1c94392a13cbdf87e03a644633eb775bf45694a1'>Merge remote-tracking branch 'origin/master' into core-updates-frozen</a></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2021-11-07 23:10:41 +0100'>2021-11-07</span></td><td><a href='/guix/commit/tests/guix-build.sh?id=4d59596a1c5f6b20870e619cbf67068ac7dd64ff'>ui: 'load*' correctly reports 'read-error' in all cases.</a><span class='msg-avail'>...<span class='msg-tooltip'>Previously, 'read-error' exceptions other than "missing closing paren"
would not be reported; instead, we'd directly call (exit 1) without
printing anything.

Fixes &lt;https://issues.guix.gnu.org/51463&gt;.
Reported by Alice BRENON &lt;alice.brenon@ens-lyon.fr&gt;.

* guix/ui.scm (report-load-error): Report the error without re-throwing
upon 'read-error'.
* tests/guix-build.sh: Add test.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-09-07 14:54:09 +0200'>2021-09-07</span></td><td><a href='/guix/commit/tests/guix-build.sh?id=445eec918332c1b8d4a6ba4baf1322e13076029b'>tests: Adjust '--with-input' test.</a><span class='msg-avail'>...<span class='msg-tooltip'>This is a followup to 09b002622e2113c2f14c11ccd43fa01fd343fb95, which
changed the dependency of graphviz from guile@2.0 to guile@3.0.

* tests/guix-build.sh: Adjust '--with-input' test.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-03-23 23:19:57 -0700'>2021-03-23</span></td><td><a href='/guix/commit/tests/guix-build.sh?id=a16eb6c5f97f136b678540ba61f12b2c08e43e13'>Add powerpc64le-linux as a supported Guix architecture.</a><span class='msg-avail'>...<span class='msg-tooltip'>This makes powerpc64le-linux a supported architecture for Guix, but not for
Guix System.

* Makefile.am (SUPPORTED_SYSTEMS): Add an entry for powerpc64le-linux.
* etc/guix-install.sh (chk_sys_arch): Same.
* guix/packages.scm (%supported-systems): Same.
* m4/guix.m4 (GUIX_ASSERT_SUPPORTED_SYSTEM): Same.
* tests/guix-build.sh (all_systems): Same.
</span></span></td><td>Chris Marusich</td></tr>