#pragma once

#include "sqlite.hh"
#include <string>
#include <unordered_set>

#include "pathlocks.hh"
#include "store-api.hh"
#include "util.hh"


namespace nix {


/* Nix store and database schema version.  Version 1 (or 0) was Nix <=
   0.7.  Version 2 was Nix 0.8 and 0.9.  Version 3 is Nix 0.10.
   Version 4 is Nix 0.11.  Version 5 is Nix 0.12-0.16.  Version 6 is
   Nix 1.0.  Version 7 is Nix 1.3.  Guix has always used version 7.  */
const int nixSchemaVersion = 7;


extern string drvsLogDir;


struct Derivation;


struct OptimiseStats
{
    unsigned long filesLinked;
    unsigned long long bytesFreed;
    unsigned long long blocksFreed;
    OptimiseStats()
    {
        filesLinked = 0;
        bytesFreed = blocksFreed = 0;
    }
};


struct RunningSubstituter
{
    Pid pid;
    AutoCloseFD to, from, error;
    FdSource fromBuf;
    bool disabled;
    RunningSubstituter() : disabled(false) { };
};


class LocalStore : public StoreAPI
{
private:
    /* The currently running substituter or empty.  */
    std::unique_ptr<RunningSubstituter> run</td></tr></table>
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<div class='path'>path: <a href='/guix/commit/?id=910699ea1e3a1ae43da149621254fa119064bd97'>root</a>/<a href='/guix/commit/gnu?id=910699ea1e3a1ae43da149621254fa119064bd97'>gnu</a>/<a href='/guix/commit/gnu/packages?id=910699ea1e3a1ae43da149621254fa119064bd97'>packages</a>/<a href='/guix/commit/gnu/packages/pretty-print.scm?id=910699ea1e3a1ae43da149621254fa119064bd97'>pretty-print.scm</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='910699ea1e3a1ae43da149621254fa119064bd97'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Vincent Legoll &lt;vincent.legoll@gmail.com&gt;</td><td class='right'>2021-02-17 19:46:50 +0100</td></tr>
<tr><th>committer</th><td>Leo Famulari &lt;leo@famulari.name&gt;</td><td class='right'>2021-02-20 13:27:43 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/guix/commit/gnu/packages/pretty-print.scm?id=910699ea1e3a1ae43da149621254fa119064bd97'>910699ea1e3a1ae43da149621254fa119064bd97</a> (<a href='/guix/patch/gnu/packages/pretty-print.scm?id=910699ea1e3a1ae43da149621254fa119064bd97'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/guix/tree/?id=910699ea1e3a1ae43da149621254fa119064bd97'>8e146b414bb6c7d3de9f5cb7958c9b0a89a248e5</a> /<a href='/guix/tree/gnu/packages/pretty-print.scm?id=910699ea1e3a1ae43da149621254fa119064bd97'>gnu/packages/pretty-print.scm</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/guix/commit/gnu/packages/pretty-print.scm?id=98c5f5150206a99c4d4f84aae095eb38249a9e22'>98c5f5150206a99c4d4f84aae095eb38249a9e22</a> (<a href='/guix/diff/gnu/packages/pretty-print.scm?id=910699ea1e3a1ae43da149621254fa119064bd97&amp;id2=98c5f5150206a99c4d4f84aae095eb38249a9e22'>diff</a>)</td></tr><tr><th>download</th><td colspan='2' class='oid'><a href='/guix/snapshot/guix-910699ea1e3a1ae43da149621254fa119064bd97.tar.gz'>guix-910699ea1e3a1ae43da149621254fa119064bd97.tar.gz</a><br/><a href='/guix/snapshot/guix-910699ea1e3a1ae43da149621254fa119064bd97.zip'>guix-910699ea1e3a1ae43da149621254fa119064bd97.zip</a><br/></td></tr></table>
<div class='commit-subject'>gnu: libx11: Update to 1.7.0.</div><div class='commit-msg'>* gnu/packages/xorg.scm (libx11): Update to 1.7.0.

Signed-off-by: Leo Famulari &lt;leo@famulari.name&gt;
</div><div class='diffstat-header'><a href='/guix/diff/?id=910699ea1e3a1ae43da149621254fa119064bd97'>Diffstat</a> (limited to 'gnu/packages/pretty-print.scm')</div><table summary='diffstat' class='diffstat'></table><div class='diffstat-summary'>0 files changed, 0 insertions, 0 deletions</div><table summary='diff' class='diff'><tr><td></td></tr></table></div> <!-- class=content -->
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t referrer, uint64_t reference);

    void appendReferrer(const Path & from, const Path & to, bool lock);

    void rewriteReferrers(const Path & path, bool purge, PathSet referrers);

    void invalidatePath(const Path & path);

    /* Delete a path from the Nix store. */
    void invalidatePathChecked(const Path & path);

    void verifyPath(const Path & path, const PathSet & store,
        PathSet & done, PathSet & validPaths, bool repair, bool & errors);

    void updatePathInfo(const ValidPathInfo & info);

    struct GCState;

    void deleteGarbage(GCState & state, const Path & path);

    void tryToDelete(GCState & state, const Path & path);

    bool canReachRoot(GCState & state, PathSet & visited, const Path & path);

    void deletePathRecursive(GCState & state, const Path & path);

    bool isActiveTempFile(const GCState & state,
        const Path & path, const string & suffix);

    int openGCLock(LockType lockType);

    void removeUnusedLinks(const GCState & state);

    void startSubstituter(RunningSubstituter & runningSubstituter);

    string getLineFromSubstituter(RunningSubstituter & run);

    template<class T> T getIntLineFromSubstituter(RunningSubstituter & run);

    Path createTempDirInStore();

    Path importPath(bool requireSignature, Source & source);

    void checkDerivationOutputs(const Path & drvPath, const Derivation & drv);

    typedef std::unordered_set<ino_t> InodeHash;

    InodeHash loadInodeHash();
    Strings readDirectoryIgnoringInodes(const Path & path, const InodeHash & inodeHash);
    void optimisePath_(OptimiseStats & stats, const Path & path, InodeHash & inodeHash);

    // Internal versions that are not wrapped in retry_sqlite.
    bool isValidPath_(const Path & path);
    void queryReferrers_(const Path & path, PathSet & referrers);
};


typedef std::pair<dev_t, ino_t> Inode;
typedef set<Inode> InodesSeen;


/* "Fix", or canonicalise, the meta-data of the files in a store path
   after it has been built.  In particular:
   - the last modification date on each file is set to 1 (i.e.,
     00:00:01 1/1/1970 UTC)
   - the permissions are set of 444 or 555 (i.e., read-only with or
     without execute permission; setuid bits etc. are cleared)
   - the owner and group are set to the Nix user and group, if we're
     running as root. */
void canonicalisePathMetaData(const Path & path, uid_t fromUid, InodesSeen & inodesSeen);
void canonicalisePathMetaData(const Path & path, uid_t fromUid);

void canonicaliseTimestampAndPermissions(const Path & path);

MakeError(PathInUse, Error);

}