#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;
    }
};


class LocalStore : public StoreAPI
{
private:
    /* The currently running substituter or empty.  */
    std::shared_ptr<Agent> runningSubstituter;

    /* Ensure the substituter is running and return it.  */
    std::shared_ptr<Agent> substituter();

    Path linksDir;

public:</td></tr></table>
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<div class='path'>path: <a href='/guix/commit/?id=6d9cfb91aaeb8a2f3bb4db223c440a6cc396ea32'>root</a>/<a href='/guix/commit/tests?id=6d9cfb91aaeb8a2f3bb4db223c440a6cc396ea32'>tests</a>/<a href='/guix/commit/tests/go.scm?id=6d9cfb91aaeb8a2f3bb4db223c440a6cc396ea32'>go.scm</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='6d9cfb91aaeb8a2f3bb4db223c440a6cc396ea32'/><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>fesoj000 &lt;fesoj000@gmail.com&gt;</td><td class='right'>2022-03-27 00:34:21 +0100</td></tr>
<tr><th>committer</th><td>Ludovic Courtès &lt;ludo@gnu.org&gt;</td><td class='right'>2022-04-11 13:48:30 +0200</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/guix/commit/tests/go.scm?id=6d9cfb91aaeb8a2f3bb4db223c440a6cc396ea32'>6d9cfb91aaeb8a2f3bb4db223c440a6cc396ea32</a> (<a href='/guix/patch/tests/go.scm?id=6d9cfb91aaeb8a2f3bb4db223c440a6cc396ea32'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/guix/tree/?id=6d9cfb91aaeb8a2f3bb4db223c440a6cc396ea32'>b7bfc70d561f60083315548af8cc46f1c83127c5</a> /<a href='/guix/tree/tests/go.scm?id=6d9cfb91aaeb8a2f3bb4db223c440a6cc396ea32'>tests/go.scm</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/guix/commit/tests/go.scm?id=0f31129e4e9864938fadf7ac1b33290c377e579b'>0f31129e4e9864938fadf7ac1b33290c377e579b</a> (<a href='/guix/diff/tests/go.scm?id=6d9cfb91aaeb8a2f3bb4db223c440a6cc396ea32&amp;id2=0f31129e4e9864938fadf7ac1b33290c377e579b'>diff</a>)</td></tr><tr><th>download</th><td colspan='2' class='oid'><a href='/guix/snapshot/guix-6d9cfb91aaeb8a2f3bb4db223c440a6cc396ea32.tar.gz'>guix-6d9cfb91aaeb8a2f3bb4db223c440a6cc396ea32.tar.gz</a><br/><a href='/guix/snapshot/guix-6d9cfb91aaeb8a2f3bb4db223c440a6cc396ea32.zip'>guix-6d9cfb91aaeb8a2f3bb4db223c440a6cc396ea32.zip</a><br/></td></tr></table>
<div class='commit-subject'>gnu: Add libnetfilter-cthelper</div><div class='commit-msg'>* gnu/packages/linux.scm (libnetfilter-cthelper): New variable.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</div><div class='diffstat-header'><a href='/guix/diff/?id=6d9cfb91aaeb8a2f3bb4db223c440a6cc396ea32'>Diffstat</a> (limited to 'tests/go.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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nDB(bool create);

    void makeStoreWritable();

    uint64_t queryValidPathId(const Path & path);

    uint64_t addValidPath(const ValidPathInfo & info, bool checkOutputs = true);

    void addReference(uint64_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);

    string getLineFromSubstituter(Agent & run);

    template<class T> T getIntLineFromSubstituter(Agent & 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);

}