libopkg/pkg.h

   1 /* pkg.h - the opkg package management system
   2
   3    Carl D. Worth
   4
   5    Copyright (C) 2001 University of Southern California
   6
   7    This program is free software; you can redistribute it and/or
   8    modify it under the terms of the GNU General Public License as
   9    published by the Free Software Foundation; either version 2, or (at
  10    your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful, but
  13    WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15    General Public License for more details.
  16 */
  17
  18 #ifndef PKG_H
  19 #define PKG_H
  20
  21 #include "config.h"
  22
  23 #include <sys/types.h>
  24 #include <libubox/blob.h>
  25
  26 #include "pkg_vec.h"
  27 #include "str_list.h"
  28 #include "active_list.h"
  29 #include "pkg_src.h"
  30 #include "pkg_dest.h"
  31 #include "opkg_conf.h"
  32 #include "conffile_list.h"
  33
  34 struct opkg_conf;
  35
  36 #ifndef ARRAY_SIZE
  37 #define ARRAY_SIZE(array) sizeof(array) / sizeof((array)[0])
  38 #endif
  39
  40 /* I think "Size" is currently the shortest field name */
  41 #define PKG_MINIMUM_FIELD_NAME_LEN 4
  42
  43 enum pkg_state_want {
  44         SW_UNKNOWN = 1,
  45         SW_INSTALL,
  46         SW_DEINSTALL,
  47         SW_PURGE,
  48         SW_LAST_STATE_WANT
  49 };
  50 typedef enum pkg_state_want pkg_state_want_t;
  51
  52 enum pkg_state_flag {
  53         SF_OK = 0,
  54         SF_REINSTREQ = 1,
  55         SF_HOLD = 2,            /* do not upgrade version */
  56         SF_REPLACE = 4,         /* replace this package */
  57         SF_NOPRUNE = 8,         /* do not remove obsolete files */
  58         SF_PREFER = 16,         /* prefer this version */
  59         SF_OBSOLETE = 32,       /* old package in upgrade pair */
  60         SF_MARKED = 64,         /* temporary mark */
  61         SF_FILELIST_CHANGED = 128,      /* needs filelist written */
  62         SF_USER = 256,
  63         SF_LAST_STATE_FLAG
  64 };
  65 typedef enum pkg_state_flag pkg_state_flag_t;
  66 #define SF_NONVOLATILE_FLAGS (SF_HOLD|SF_NOPRUNE|SF_PREFER|SF_OBSOLETE|SF_USER)
  67
  68 enum pkg_state_status {
  69         SS_NOT_INSTALLED = 1,
  70         SS_UNPACKED,
  71         SS_HALF_CONFIGURED,
  72         SS_INSTALLED,
  73         SS_HALF_INSTALLED,
  74         SS_CONFIG_FILES,
  75         SS_POST_INST_FAILED,
  76         SS_REMOVAL_FAILED,
  77         SS_LAST_STATE_STATUS
  78 };
  79 typedef enum pkg_state_status pkg_state_status_t;
  80
  81 enum pkg_fields {
  82         PKG_MAINTAINER,
  83         PKG_PRIORITY,
  84         PKG_SOURCE,
  85         PKG_TAGS,
  86         PKG_SECTION,
  87         PKG_EPOCH,
  88         PKG_FILENAME,
  89         PKG_LOCAL_FILENAME,
  90         PKG_VERSION,
  91         PKG_REVISION,
  92         PKG_ARCHITECTURE,
  93         PKG_DESCRIPTION,
  94         PKG_MD5SUM,
  95         PKG_SHA256SUM,
  96         PKG_SIZE,
  97         PKG_INSTALLED_SIZE,
  98         PKG_INSTALLED_TIME,
  99 };
 100
 101 struct abstract_pkg {
 102         char *name;
 103         int dependencies_checked;
 104         pkg_vec_t *pkgs;
 105         pkg_state_status_t state_status;
 106         pkg_state_flag_t state_flag;
 107
 108         /* XXX: This should be abstract_pkg_vec_t for consistency. */
 109         struct abstract_pkg **depended_upon_by;
 110
 111         abstract_pkg_vec_t *provided_by;
 112         abstract_pkg_vec_t *replaced_by;
 113 };
 114
 115 #include "pkg_depends.h"
 116
 117 /* XXX: CLEANUP: I'd like to clean up pkg_t in several ways:
 118
 119    The 3 version fields should go into a single version struct. (This
 120    is especially important since, currently, pkg->version can easily
 121    be mistaken for pkg_verson_str_alloc(pkg) although they are very
 122    distinct. This has been the source of multiple bugs.
 123
 124    The 3 state fields could possibly also go into their own struct.
 125
 126    All fields which deal with lists of packages, (Depends,
 127    Pre-Depends, Provides, Suggests, Recommends, Enhances), should each
 128    be handled by a single struct in pkg_t
 129
 130    All string fields for which there is a small set of possible
 131    values, (section, maintainer, architecture, maybe version?), that
 132    are reused among different packages -- for all such packages we
 133    should move from "char *"s to some atom datatype to share data
 134    storage and use less memory. We might even do reference counting,
 135    but probably not since most often we only create new pkg_t structs,
 136    we don't often free them.  */
 137 struct pkg {
 138         char *name;
 139         pkg_src_t *src;
 140         pkg_dest_t *dest;
 141         pkg_state_want_t state_want;
 142         pkg_state_flag_t state_flag;
 143         pkg_state_status_t state_status;
 144         char **depends_str;
 145         unsigned int depends_count;
 146         char **pre_depends_str;
 147         unsigned int pre_depends_count;
 148         char **recommends_str;
 149         unsigned int recommends_count;
 150         char **suggests_str;
 151         unsigned int suggests_count;
 152         struct active_list list;        /* Used for installing|upgrading */
 153         compound_depend_t *depends;
 154
 155         char **conflicts_str;
 156         compound_depend_t *conflicts;
 157         unsigned int conflicts_count;
 158
 159         char **replaces_str;
 160         unsigned int replaces_count;
 161         abstract_pkg_t **replaces;
 162
 163         char **provides_str;
 164         unsigned int provides_count;
 165         abstract_pkg_t **provides;
 166
 167         abstract_pkg_t *parent;
 168
 169         char *tmp_unpack_dir;
 170         conffile_list_t conffiles;
 171         /* As pointer for lazy evaluation */
 172         str_list_t *installed_files;
 173         /* XXX: CLEANUP: I'd like to perhaps come up with a better
 174            mechanism to avoid the problem here, (which is that the
 175            installed_files list was being freed from an inner loop while
 176            still being used within an outer loop. */
 177         int installed_files_ref_cnt;
 178         int arch_priority;
 179
 180         int essential:1;
 181 /* Adding this flag, to "force" opkg to choose a "provided_by_hand" package, if there are multiple choice */
 182         int provided_by_hand:1;
 183
 184         /* this flag specifies whether the package was installed to satisfy another
 185          * package's dependancies */
 186         int auto_installed:1;
 187         int is_upgrade:1;
 188
 189         struct blob_buf blob;
 190 };
 191
 192 pkg_t *pkg_new(void);
 193 void pkg_deinit(pkg_t * pkg);
 194 int pkg_init_from_file(pkg_t * pkg, const char *filename);
 195
 196 void *pkg_set_raw(pkg_t *pkg, int id, const void *val, size_t len);
 197 void *pkg_get_raw(const pkg_t *pkg, int id);
 198
 199 static inline int pkg_set_int(pkg_t *pkg, int id, int val)
 200 {
 201         return (intptr_t) pkg_set_raw(pkg, id, &val, sizeof(val));
 202 }
 203
 204 static inline int pkg_get_int(const pkg_t *pkg, int id)
 205 {
 206         return (intptr_t) pkg_get_raw(pkg, id);
 207 }
 208
 209 char *pkg_set_string(pkg_t *pkg, int id, const char *s);
 210
 211 static inline char *pkg_get_string(const pkg_t *pkg, int id)
 212 {
 213         return (char *) pkg_get_raw(pkg, id);
 214 }
 215
 216 static inline void * pkg_set_ptr(pkg_t *pkg, int id, void *ptr)
 217 {
 218         return pkg_set_raw(pkg, id, ptr, sizeof(ptr));
 219 }
 220
 221 static inline void * pkg_get_ptr(const pkg_t *pkg, int id)
 222 {
 223         return pkg_get_raw(pkg, id);
 224 }
 225
 226 abstract_pkg_t *abstract_pkg_new(void);
 227
 228 /*
 229  * merges fields from newpkg into oldpkg.
 230  * Forcibly sets oldpkg state_status, state_want and state_flags
 231  */
 232 int pkg_merge(pkg_t * oldpkg, pkg_t * newpkg);
 233
 234 char *pkg_version_str_alloc(pkg_t * pkg);
 235
 236 int pkg_compare_versions(const pkg_t *pkg, const pkg_t *ref_pkg);
 237 int pkg_name_version_and_architecture_compare(const void *a, const void *b);
 238 int abstract_pkg_name_compare(const void *a, const void *b);
 239
 240 void pkg_formatted_info(FILE * fp, pkg_t * pkg);
 241 void pkg_formatted_field(FILE * fp, pkg_t * pkg, const char *field);
 242
 243 void set_flags_from_control(pkg_t * pkg);
 244
 245 void pkg_print_status(pkg_t * pkg, FILE * file);
 246 str_list_t *pkg_get_installed_files(pkg_t * pkg);
 247 void pkg_free_installed_files(pkg_t * pkg);
 248 void pkg_remove_installed_files_list(pkg_t * pkg);
 249 conffile_t *pkg_get_conffile(pkg_t * pkg, const char *file_name);
 250 int pkg_run_script(pkg_t * pkg, const char *script, const char *args);
 251
 252 /* enum mappings */
 253 pkg_state_want_t pkg_state_want_from_str(char *str);
 254 pkg_state_flag_t pkg_state_flag_from_str(const char *str);
 255 pkg_state_status_t pkg_state_status_from_str(const char *str);
 256
 257 int pkg_version_satisfied(pkg_t * it, pkg_t * ref, const char *op);
 258
 259 int pkg_arch_supported(pkg_t * pkg);
 260 void pkg_info_preinstall_check(void);
 261
 262 int pkg_write_filelist(pkg_t * pkg);
 263 int pkg_write_changed_filelists(void);
 264
 265 #endif