#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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<div class='path'>path: <a href='/guix/log/?id=9f8f785014f7af7656b6f06258975ddc53a9cb01'>root</a>/<a href='/guix/log/gnu?id=9f8f785014f7af7656b6f06258975ddc53a9cb01'>gnu</a>/<a href='/guix/log/gnu/services?id=9f8f785014f7af7656b6f06258975ddc53a9cb01'>services</a>/<a href='/guix/log/gnu/services/cups.scm?id=9f8f785014f7af7656b6f06258975ddc53a9cb01'>cups.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/services/cups.scm?id=9f8f785014f7af7656b6f06258975ddc53a9cb01&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2021-12-05 19:17:41 +0100'>2021-12-05</span></td><td><a href='/guix/commit/gnu/services/cups.scm?id=9bc0f45df5d6aed217020b1183dca54989844fb0'>Merge remote-tracking branch 'origin/master' into core-updates-frozen</a></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2021-11-30 01:08:55 +0100'>2021-11-30</span></td><td><a href='/guix/commit/gnu/services/cups.scm?id=892f1b7273d57b25940700877a02618fe826cc08'>services: Accept &lt;inferior-package&gt;s in lieu of &lt;package&gt;s.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/services/authentication.scm (fprintd-configuration)
(nslcd-configuration): Substitute file-like objects for package ones.
* gnu/services/cgit.scm (cgit-configuration, opaque-cgit-configuration):
Likewise.
* gnu/services/cups.scm (package-list?, cups-configuration): Likewise.
* gnu/services/dns.scm (verify-knot-configuration)
(ddclient-configuration): Likewise.
* gnu/services/docker.scm (docker-configuration): Likewise.
* gnu/services/file-sharing.scm (transmission-daemon-configuration): Likewise.
* gnu/services/getmail.scm (getmail-configuration): Likewise.
* gnu/services/mail.scm (dovecot-configuration)
(opaque-dovecot-configuration): Likewise.
* gnu/services/messaging.scm (prosody-configuration)
(opaque-prosody-configuration): Likewise.
* gnu/services/monitoring.scm (zabbix-server-configuration)
(zabbix-agent-configuration): Likewise.
* gnu/services/networking.scm (opendht-configuration): Likewise.
* gnu/services/pm.scm (tlp-configuration): Likewise.
* gnu/services/telephony.scm (jami-configuration): Likewise.
* gnu/services/virtualization.scm (libvirt-configuration)
(qemu-guest-agent-configuration): Likewise.
* gnu/services/vpn.scm (openvpn-client-configuration): Likewise.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2021-11-17 23:43:14 +0100'>2021-11-17</span></td><td><a href='/guix/commit/gnu/services/cups.scm?id=3a317f7476f8c6012e166ff9f340f861938721c9'>Merge branch 'master' into core-updates-frozen</a></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-11-16 01:15:04 +0100'>2021-11-16</span></td><td><a href='/guix/commit/gnu/services/cups.scm?id=122396075f12b013b6bde56dafb895587b95bc9d'>services: cups: Update default timeouts.</a><span class='msg-avail'>...<span class='msg-tooltip'>Upstream raised these back in 2019 with CUPS 2.3.0.

* gnu/services/cups.scm (&lt;cups-configuration&gt;): Raise default
‘multiple-operation-timeout’ and ‘timeout’ from 300 to 900 seconds.
* doc/guix.texi (Printing Services): Adjust accordingly.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2021-06-23 18:45:21 +0200'>2021-06-23</span></td><td><a href='/guix/commit/gnu/services/cups.scm?id=9dea3f101f252331c049c03f501398a5ec837ba9'>Merge branch 'master' into core-updates</a><span class='msg-avail'>...<span class='msg-tooltip'>Conflicts:
	gnu/packages/cups.scm
	gnu/packages/python-web.scm
	gnu/packages/web.scm
	guix/build/maven/pom.scm
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2021-06-23 03:26:33 +0200'>2021-06-23</span></td><td><a href='/guix/commit/gnu/services/cups.scm?id=828ceee7db0ab74786049600108d6b15017851c5'>services: cups: Remove obsolete KeepAliveTimeout directive.</a><span class='msg-avail'>...<span class='msg-tooltip'>https://github.com/apple/cups/commit/461bd4e50142b2928a0d164bd1aae274e4d34da5

* gnu/services/cups.scm (&lt;cups-configuration&gt;): Remove keep-alive-timeout field.
* doc/guix.texi (Printing Services): Likewise.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2021-06-23 03:01:48 +0200'>2021-06-23</span></td><td><a href='/guix/commit/gnu/services/cups.scm?id=e254287b0c22fc89566bd08207dc72f4f8c9972d'>services: cups: Fix ‘files-config’ typo/left-over.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/services/cups.scm (&lt;policy-configuration&gt;): Substitute
&lt;files-configuration&gt; for &lt;files-config&gt; in documentation.
* doc/guix.texi (Printing Services): Likewise.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2021-06-23 02:51:30 +0200'>2021-06-23</span></td><td><a href='/guix/commit/gnu/services/cups.scm?id=c655bbb376d2dd73805cef344c496f6f77b22d0f'>services: cups: Support CUPS 2.3.3op2's LogFileGroup directive.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/services/cups.scm (&lt;files-configuration&gt;): Add a log-file-group
field.
* doc/guix.texi (Printing Services): Document it.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>