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 <sys/types.h>
  22 #include <sys/stat.h>
  23 #include <unistd.h>
  24
  25 #include "pkg_vec.h"
  26 #include "str_list.h"
  27 #include "active_list.h"
  28 #include "pkg_src.h"
  29 #include "pkg_dest.h"
  30 #include "opkg_conf.h"
  31 #include "conffile_list.h"
  32
  33 struct opkg_conf;
  34
  35
  36 #define ARRAY_SIZE(array) sizeof(array) / sizeof((array)[0])
  37
  38 /* I think "Size" is currently the shortest field name */
  39 #define PKG_MINIMUM_FIELD_NAME_LEN 4
  40
  41 enum pkg_state_want
  42 {
  43     SW_UNKNOWN = 1,
  44     SW_INSTALL,
  45     SW_DEINSTALL,
  46     SW_PURGE,
  47     SW_LAST_STATE_WANT
  48 };
  49 typedef enum pkg_state_want pkg_state_want_t;
  50
  51 enum pkg_state_flag
  52 {
  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 {
  70     SS_NOT_INSTALLED = 1,
  71     SS_UNPACKED,
  72     SS_HALF_CONFIGURED,
  73     SS_INSTALLED,
  74     SS_HALF_INSTALLED,
  75     SS_CONFIG_FILES,
  76     SS_POST_INST_FAILED,
  77     SS_REMOVAL_FAILED,
  78     SS_LAST_STATE_STATUS
  79 };
  80 typedef enum pkg_state_status pkg_state_status_t;
  81
  82 struct abstract_pkg{
  83     char * name;
  84     int dependencies_checked;
  85     pkg_vec_t * pkgs;
  86     pkg_state_status_t state_status;
  87     pkg_state_flag_t state_flag;
  88
  89     /* XXX: This should be abstract_pkg_vec_t for consistency. */
  90     struct abstract_pkg ** depended_upon_by;
  91
  92     abstract_pkg_vec_t * provided_by;
  93     abstract_pkg_vec_t * replaced_by;
  94 };
  95
  96 #include "pkg_depends.h"
  97
  98 /* XXX: CLEANUP: I'd like to clean up pkg_t in several ways:
  99
 100    The 3 version fields should go into a single version struct. (This
 101    is especially important since, currently, pkg->version can easily
 102    be mistaken for pkg_verson_str_alloc(pkg) although they are very
 103    distinct. This has been the source of multiple bugs.
 104
 105    The 3 state fields could possibly also go into their own struct.
 106
 107    All fields which deal with lists of packages, (Depends,
 108    Pre-Depends, Provides, Suggests, Recommends, Enhances), should each
 109    be handled by a single struct in pkg_t
 110
 111    All string fields for which there is a small set of possible
 112    values, (section, maintainer, architecture, maybe version?), that
 113    are reused among different packages -- for all such packages we
 114    should move from "char *"s to some atom datatype to share data
 115    storage and use less memory. We might even do reference counting,
 116    but probably not since most often we only create new pkg_t structs,
 117    we don't often free them.  */
 118 struct pkg
 119 {
 120      char *name;
 121      unsigned long epoch;
 122      char *version;
 123      char *revision;
 124      pkg_src_t *src;
 125      pkg_dest_t *dest;
 126      char *architecture;
 127      char *section;
 128      char *maintainer;
 129      char *description;
 130      char *tags;
 131      pkg_state_want_t state_want;
 132      pkg_state_flag_t state_flag;
 133      pkg_state_status_t state_status;
 134      char **depends_str;
 135      unsigned int depends_count;
 136      char **pre_depends_str;
 137      unsigned int pre_depends_count;
 138      char **recommends_str;
 139      unsigned int recommends_count;
 140      char **suggests_str;
 141      unsigned int suggests_count;
 142      struct active_list list; /* Used for installing|upgrading */
 143      compound_depend_t * depends;
 144
 145      char **conflicts_str;
 146      compound_depend_t * conflicts;
 147      unsigned int conflicts_count;
 148
 149      char **replaces_str;
 150      unsigned int replaces_count;
 151      abstract_pkg_t ** replaces;
 152
 153      char **provides_str;
 154      unsigned int provides_count;
 155      abstract_pkg_t ** provides;
 156
 157      abstract_pkg_t *parent;
 158
 159      char *filename;
 160      char *local_filename;
 161      char *tmp_unpack_dir;
 162      char *md5sum;
 163 #if defined HAVE_SHA256
 164      char *sha256sum;
 165 #endif
 166      unsigned long size;                /* in bytes */
 167      unsigned long installed_size;      /* in bytes */
 168      char *priority;
 169      char *source;
 170      conffile_list_t conffiles;
 171      time_t installed_time;
 172      /* As pointer for lazy evaluation */
 173      str_list_t *installed_files;
 174      /* XXX: CLEANUP: I'd like to perhaps come up with a better
 175         mechanism to avoid the problem here, (which is that the
 176         installed_files list was being freed from an inner loop while
 177         still being used within an outer loop. */
 178      int installed_files_ref_cnt;
 179      int essential;
 180      int arch_priority;
 181 /* Adding this flag, to "force" opkg to choose a "provided_by_hand" package, if there are multiple choice */
 182      int provided_by_hand;
 183
 184      /* this flag specifies whether the package was installed to satisfy another
 185       * package's dependancies */
 186      int auto_installed;
 187 };
 188
 189 pkg_t *pkg_new(void);
 190 void pkg_deinit(pkg_t *pkg);
 191 int pkg_init_from_file(pkg_t *pkg, const char *filename);
 192 abstract_pkg_t *abstract_pkg_new(void);
 193
 194 /*
 195  * merges fields from newpkg into oldpkg.
 196  * Forcibly sets oldpkg state_status, state_want and state_flags
 197  */
 198 int pkg_merge(pkg_t *oldpkg, pkg_t *newpkg);
 199
 200 char *pkg_version_str_alloc(pkg_t *pkg);
 201
 202 int pkg_compare_versions(const pkg_t *pkg, const pkg_t *ref_pkg);
 203 int pkg_name_version_and_architecture_compare(const void *a, const void *b);
 204 int abstract_pkg_name_compare(const void *a, const void *b);
 205
 206 void pkg_formatted_info(FILE *fp, pkg_t *pkg);
 207 void pkg_formatted_field(FILE *fp, pkg_t *pkg, const char *field);
 208
 209 void set_flags_from_control(pkg_t *pkg);
 210
 211 void pkg_print_status(pkg_t * pkg, FILE * file);
 212 str_list_t *pkg_get_installed_files(pkg_t *pkg);
 213 void pkg_free_installed_files(pkg_t *pkg);
 214 void pkg_remove_installed_files_list(pkg_t *pkg);
 215 conffile_t *pkg_get_conffile(pkg_t *pkg, const char *file_name);
 216 int pkg_run_script(pkg_t *pkg, const char *script, const char *args);
 217
 218 /* enum mappings */
 219 pkg_state_want_t pkg_state_want_from_str(char *str);
 220 pkg_state_flag_t pkg_state_flag_from_str(const char *str);
 221 pkg_state_status_t pkg_state_status_from_str(const char *str);
 222
 223 int pkg_version_satisfied(pkg_t *it, pkg_t *ref, const char *op);
 224
 225 int pkg_arch_supported(pkg_t *pkg);
 226 void pkg_info_preinstall_check(void);
 227
 228 int pkg_write_filelist(pkg_t *pkg);
 229 int pkg_write_changed_filelists(void);
 230
 231 #endif