/usr/include/dpkg/dpkg-db.h is in libdpkg-dev 1.16.1.2ubuntu7.7.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* libdpkg - Debian packaging suite library routines
* dpkg-db.h - declarations for in-core package database management
*
* Copyright © 1994,1995 Ian Jackson <ian@chiark.greenend.org.uk>
* Copyright © 2000,2001 Wichert Akkerman
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef LIBDPKG_DPKG_DB_H
#define LIBDPKG_DPKG_DB_H
#include <sys/types.h>
#include <stdbool.h>
#include <stdio.h>
#include <dpkg/macros.h>
#include <dpkg/varbuf.h>
#include <dpkg/version.h>
#include <dpkg/arch.h>
DPKG_BEGIN_DECLS
enum deptype {
dep_suggests,
dep_recommends,
dep_depends,
dep_predepends,
dep_breaks,
dep_conflicts,
dep_provides,
dep_replaces,
dep_enhances
};
enum depverrel {
dvrf_earlier= 0001,
dvrf_later= 0002,
dvrf_strict= 0010,
dvrf_orequal= 0020,
dvrf_builtup= 0100,
dvr_none= 0200,
dvr_earlierequal= dvrf_builtup | dvrf_earlier | dvrf_orequal,
dvr_earlierstrict= dvrf_builtup | dvrf_earlier | dvrf_strict,
dvr_laterequal= dvrf_builtup | dvrf_later | dvrf_orequal,
dvr_laterstrict= dvrf_builtup | dvrf_later | dvrf_strict,
dvr_exact= 0400
};
struct dependency {
struct pkginfo *up;
struct dependency *next;
struct deppossi *list;
enum deptype type;
};
struct deppossi {
struct dependency *up;
struct pkgset *ed;
struct deppossi *next, *rev_next, *rev_prev;
struct versionrevision version;
enum depverrel verrel;
const struct dpkg_arch *arch;
bool arch_is_implicit;
bool cyclebreak;
};
struct arbitraryfield {
struct arbitraryfield *next;
const char *name;
const char *value;
};
struct conffile {
struct conffile *next;
const char *name;
const char *hash;
bool obsolete;
};
struct filedetails {
struct filedetails *next;
const char *name;
const char *msdosname;
const char *size;
const char *md5sum;
};
/**
* Node describing a binary package file.
*
* This structure holds information contained on each binary package.
*
* Note: Usually referred in the code as ‘pif’ for historical reasons.
*/
struct pkgbin {
struct dependency *depends;
/* The ‘essential’ flag, true = yes, false = no (absent). */
bool essential;
enum pkgmultiarch {
multiarch_no,
multiarch_same,
multiarch_allowed,
multiarch_foreign,
} multiarch;
const struct dpkg_arch *arch;
const char *description;
const char *maintainer;
const char *source;
const char *installedsize;
const char *origin;
const char *bugs;
struct versionrevision version;
struct conffile *conffiles;
struct arbitraryfield *arbs;
};
/**
* Node indicates that parent's Triggers-Pending mentions name.
*
* Note: These nodes do double duty: after they're removed from a package's
* trigpend list, references may be preserved by the trigger cycle checker
* (see trigproc.c).
*/
struct trigpend {
struct trigpend *next;
const char *name;
};
/**
* Node indicates that aw's Triggers-Awaited mentions pend.
*/
struct trigaw {
struct pkginfo *aw, *pend;
struct trigaw *samepend_next;
struct {
struct trigaw *next, *prev;
} sameaw;
};
/* Note: dselect and dpkg have different versions of this. */
struct perpackagestate;
/**
* Node describing an architecture package instance.
*
* This structure holds state information.
*
* Note: Usually referred in the code as pig.
*/
struct pkginfo {
struct pkgset *set;
struct pkginfo *arch_next;
enum pkgwant {
want_unknown, want_install, want_hold, want_deinstall, want_purge,
/* Not allowed except as special sentinel value in some places. */
want_sentinel,
} want;
/* The error flag bitmask. */
enum pkgeflag {
eflag_ok = 0,
eflag_reinstreq = 1,
} eflag;
enum pkgstatus {
stat_notinstalled,
stat_configfiles,
stat_halfinstalled,
stat_unpacked,
stat_halfconfigured,
stat_triggersawaited,
stat_triggerspending,
stat_installed
} status;
enum pkgpriority {
pri_required,
pri_important,
pri_standard,
pri_optional,
pri_extra,
pri_other, pri_unknown, pri_unset=-1
} priority;
const char *otherpriority;
const char *section;
struct versionrevision configversion;
struct filedetails *files;
struct pkgbin installed;
struct pkgbin available;
struct perpackagestate *clientdata;
struct {
/* ->aw == this */
struct trigaw *head, *tail;
} trigaw;
/* ->pend == this, non-NULL for us when Triggers-Pending. */
struct trigaw *othertrigaw_head;
struct trigpend *trigpend_head;
};
/**
* Node describing a package set sharing the same package name.
*/
struct pkgset {
struct pkgset *next;
const char *name;
struct pkginfo pkg;
struct {
struct deppossi *available;
struct deppossi *installed;
} depended;
};
/*** from dbdir.c ***/
const char *dpkg_db_set_dir(const char *dir);
const char *dpkg_db_get_dir(void);
char *dpkg_db_get_path(const char *pathpart);
/*** from dbmodify.c ***/
enum modstatdb_rw {
/* Those marked with \*s*\ are possible returns from modstatdb_init. */
msdbrw_readonly/*s*/, msdbrw_needsuperuserlockonly/*s*/,
msdbrw_writeifposs,
msdbrw_write/*s*/, msdbrw_needsuperuser,
/* Now some optional flags: */
msdbrw_available_mask= ~077,
/* Flags start at 0100. */
msdbrw_available_readonly = 0100,
msdbrw_available_write = 0200,
};
void modstatdb_init(void);
void modstatdb_done(void);
bool modstatdb_is_locked(void);
bool modstatdb_can_lock(void);
void modstatdb_lock(void);
void modstatdb_unlock(void);
enum modstatdb_rw modstatdb_open(enum modstatdb_rw reqrwflags);
void modstatdb_note(struct pkginfo *pkg);
void modstatdb_note_ifwrite(struct pkginfo *pkg);
void modstatdb_checkpoint(void);
void modstatdb_shutdown(void);
/*** from database.c ***/
void pkgset_blank(struct pkgset *set);
void pkg_blank(struct pkginfo *pp);
void pkgbin_blank(struct pkgbin *pifp, bool keep_arch);
bool pkg_is_informative(struct pkginfo *pkg, struct pkgbin *info);
struct pkginfo *pkg_db_find_pkg(const char *name, const struct dpkg_arch *arch);
struct pkgset *pkg_db_find_set(const char *name);
int pkg_db_count_set(void);
int pkg_db_count_pkg(void);
void pkg_db_reset(void);
struct pkgiterator *pkg_db_iter_new(void);
struct pkginfo *pkg_db_iter_next_pkg(struct pkgiterator *iter);
struct pkgset *pkg_db_iter_next_set(struct pkgiterator *iter);
void pkg_db_iter_free(struct pkgiterator *iter);
void pkg_db_report(FILE *);
/*** from parse.c ***/
enum parsedbflags {
/* Store in ‘available’ in-core structures, not ‘status’. */
pdb_recordavailable = 001,
/* Throw up an error if ‘Status’ encountered. */
pdb_rejectstatus = 002,
/* Ignore priority/section info if we already have any. */
pdb_weakclassification = 004,
/* Ignore files info if we already have them. */
pdb_ignorefiles = 010,
/* Ignore packages with older versions already read. */
pdb_ignoreolder = 020,
/* Perform laxer version parsing. */
pdb_lax_version_parser = 040,
/* Perform laxer parsing, used to transition to stricter parsing. */
pdb_lax_parser = pdb_lax_version_parser,
};
const char *pkg_name_is_illegal(const char *p, const char **ep);
int parsedb(const char *filename, enum parsedbflags, struct pkginfo **donep);
void copy_dependency_links(struct pkginfo *pkg,
struct dependency **updateme,
struct dependency *newdepends,
bool available);
/*** from parsehelp.c ***/
#include <dpkg/namevalue.h>
extern const struct namevalue booleaninfos[];
extern const struct namevalue multiarchinfos[];
extern const struct namevalue priorityinfos[];
extern const struct namevalue statusinfos[];
extern const struct namevalue eflaginfos[];
extern const struct namevalue wantinfos[];
#include <dpkg/error.h>
enum versiondisplayepochwhen { vdew_never, vdew_nonambig, vdew_always };
void varbufversion(struct varbuf*, const struct versionrevision*,
enum versiondisplayepochwhen);
int parseversion(struct versionrevision *rversion, const char *,
struct dpkg_error *err);
const char *versiondescribe(const struct versionrevision*,
enum versiondisplayepochwhen);
enum pkg_describe_opts {
pdo_never = 000, /* Never display arch */
pdo_foreign = 001, /* Display arch when it's a foreign one */
pdo_ma_same = 002, /* Display arch when it's multi-arch same */
pdo_always = 004, /* Always display arch */
/* Options that can be combined */
pdo_when = 007, /* Mask to get the main options only */
pdo_avail = 010, /* Use pkg->available instead of pkg->installed */
};
void varbuf_pkg(struct varbuf *vb, const struct pkginfo *pkg,
enum pkg_describe_opts pdo);
const char *pkg_describe(const struct pkginfo *pkg, enum pkg_describe_opts pdo);
/*** from dump.c ***/
void writerecord(FILE*, const char*,
const struct pkginfo *, const struct pkgbin *);
enum writedb_flags {
/* Dump ‘available’ in-core structures, not ‘status’. */
wdb_dump_available = 001,
/* Must sync the written file. */
wdb_must_sync = 002,
};
void writedb(const char *filename, enum writedb_flags flags);
/* Note: The varbufs must have been initialized and will not be
* NUL-terminated. */
void varbufrecord(struct varbuf *, const struct pkginfo *,
const struct pkgbin *);
void varbufdependency(struct varbuf *vb, struct dependency *dep);
/*** from vercmp.c ***/
bool archsatisfied(struct pkgbin *it, struct deppossi *against);
bool versionsatisfied(struct pkgbin *it, struct deppossi *against);
bool versionsatisfied3(const struct versionrevision *it,
const struct versionrevision *ref,
enum depverrel verrel);
int versioncompare(const struct versionrevision *version,
const struct versionrevision *refversion);
bool epochsdiffer(const struct versionrevision *a,
const struct versionrevision *b);
/*** from nfmalloc.c ***/
void *nfmalloc(size_t);
char *nfstrsave(const char*);
char *nfstrnsave(const char*, size_t);
void nffreeall(void);
DPKG_END_DECLS
#endif /* LIBDPKG_DPKG_DB_H */
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