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swupd-server/include/swupd.h
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Matthew Johnson 6190894f40 Do not delete renames from old versions 
Perform a final link on all renames in the manifest in order to track
renames from older versions. Do not remove orphaned renames but instead
keep them around as deleted files as well.

Signed-off-by: Matthew Johnson <matthew.johnson@intel.com>
2017-11-27 17:22:50 -08:00

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#ifndef __INCLUDE_GUARD_SWUPD_H
#define __INCLUDE_GUARD_SWUPD_H
#include <glib.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include "config.h"
#define __unused__ __attribute__((__unused__))
// SWUPD_NUM_PACKS is also "PREV_CHECK" in releas tool swupd_bb.py (change both)
#define SWUPD_NUM_PACKS 4
#define SWUPD_NUM_MANIFEST_DELTAS 25
#define SWUPD_SERVER_STATE_DIR "/var/lib/update"
#if SWUPD_WITH_BSDTAR
#define TAR_COMMAND "bsdtar"
#define TAR_XATTR_ARGS ""
#define TAR_XATTR_ARGS_STRLIST
#define TAR_WARN_ARGS_STRLIST
#else
#define TAR_COMMAND "tar"
#define TAR_XATTR_ARGS "--xattrs --xattrs-include='*'"
#define TAR_XATTR_ARGS_STRLIST "--xattrs", "--xattrs-include='*'",
#define TAR_WARN_ARGS_STRLIST "--warning=no-timestamp",
#endif
#if SWUPD_WITH_SELINUX
#define TAR_PERM_ATTR_ARGS "--preserve-permissions --selinux " TAR_XATTR_ARGS
#define TAR_PERM_ATTR_ARGS_STRLIST TAR_XATTR_ARGS_STRLIST "--preserve-permissions", "--selinux"
#else
#define TAR_PERM_ATTR_ARGS "--preserve-permissions " TAR_XATTR_ARGS
#define TAR_PERM_ATTR_ARGS_STRLIST TAR_XATTR_ARGS_STRLIST "--preserve-permissions"
#endif
#define SWUPD_HASH_DIRNAME "DIRECTORY"
#if SWUPD_WITH_STATELESS
#define OS_IS_STATELESS 1
#else
#define OS_IS_STATELESS 0
#endif
/* Build types */
#define REGULAR_BUILD 0
#define FIX_BUILD 1
#define DEV_BUILD 2
/* We don't have BZIP2 support in Android. This define translates to "ifdef 0"
* and demarcates codes which otherwise would enable BZIP2. If this define
* is changed, the Android update client will break. DO NOT CHANGE THIS
* DEFINE IN AN ANDROID TARGETED BUILD WITHOUT ENABLING/TESTING BZIP2 SUPPORT
* IN THE ANDROID CLIENT OS BUILD.
*/
#ifdef SWUPD_WITH_BZIP2
#include <bzlib.h>
#endif
/* Build toggle for lzma support.
*/
#ifdef SWUPD_WITH_LZMA
#include <lzma.h>
#endif
/* Approximatly the smallest size of a pair of input files which
* differ by a single bit that bsdiff can produce a more compact
* deltafile. Files smaller than this are always marked as different.
* See the magic 200 value in the bsdiff/src/diff.c code.
*/
#define BSDIFFSIZE 200
struct manifest {
unsigned long long int format;
int version;
int prevversion;
char *component;
int count;
uint64_t contentsize;
GList *files;
GList *manifests; /* as struct file */
GList *submanifests; /* as struct manifest */
GList *includes; /* struct manifests for all bundles included into this one */
GList *actions; /* post-update actions */
};
struct file;
struct header;
struct update_stat {
uint64_t st_mode;
uint64_t st_uid;
uint64_t st_gid;
uint64_t st_rdev;
uint64_t st_size;
};
#define DIGEST_LEN_SHA256 64
/* +1 for null termination */
#define SWUPD_HASH_LEN (DIGEST_LEN_SHA256 + 1)
struct file {
char *filename;
char hash[SWUPD_HASH_LEN];
bool use_xattrs;
int last_change;
struct update_stat stat;
/* the following are exclusive */
unsigned int is_dir : 1;
unsigned int is_file : 1;
unsigned int is_link : 1;
unsigned int is_deleted : 1;
/* a ghosted file is treated as deleted so that it can be used as a rename,
* but is not actually deleted in the client due to a 3rd-party program
* cleaning it up. This happens with boot files managed by a boot manager */
unsigned int is_ghosted : 1;
unsigned int is_manifest : 1;
/* and these are modifiers */
unsigned int is_config : 1;
unsigned int is_state : 1;
unsigned int is_boot : 1;
unsigned int is_rename : 1;
struct file *peer; /* same file in another manifest */
/* data fields to help rename detection */
double rename_score;
struct file *rename_peer;
char *alpha_only_filename; /* filename minus all numerics/etc */
char *filetype; /* The output of 'file', truncated */
char *basename;
char *dirname;
/* end of rename detection fields */
unsigned int multithread : 1; /* if set to 1, current file is computed in a
multithreaded process for fullfile creation */
};
struct packdata {
char *module;
int from;
int to;
int fullcount;
struct manifest *end_manifest;
};
extern int current_version;
extern int newversion;
extern int minversion;
extern unsigned long long int format;
extern char *state_dir;
extern char *packstage_dir;
extern char *image_dir;
extern char *staging_dir;
extern bool init_globals(void);
extern void free_globals(void);
extern bool set_format(char *);
extern void check_root(void);
extern bool set_state_dir(char *);
extern bool init_state_globals(void);
extern void free_state_globals(void);
extern int file_sort_hash(gconstpointer a, gconstpointer b);
extern int file_sort_filename(gconstpointer a, gconstpointer b);
extern int file_sort_version(gconstpointer a, gconstpointer b);
extern bool read_configuration_file(char *filename);
extern void release_configuration_data(void);
extern char *config_image_base(void);
extern char *config_output_dir(void);
extern char *config_empty_dir(void);
extern char *config_debuginfo_path(const char *path);
extern int config_initial_version(void);
extern bool config_ban_debuginfo(void);
extern void read_current_version(char *filename);
extern void write_new_version(char *filename, int version);
extern void write_cookiecrumbs_to_download_area(int version);
extern void ensure_version_image_exists(int version);
extern GList *get_last_versions_list(int next_version, int max_versions);
extern char *file_type_to_string(struct file *file);
extern struct manifest *manifest_from_file(int version, char *module);
extern void free_manifest(struct manifest *manifest);
extern struct manifest *alloc_manifest(int version, char *module, GList *actions);
extern int match_manifests(struct manifest *m1, struct manifest *m2);
extern void sort_manifest_by_version(struct manifest *manifest);
extern bool manifest_includes(struct manifest *manifest, char *component);
extern bool changed_includes(struct manifest *old, struct manifest *new);
extern int prune_manifest(struct manifest *manifest);
extern void clean_renames(struct manifest *manifest);
extern int remove_deprecated_files(struct manifest *m1, struct manifest *m2, bool (*compfunc)(struct file *, struct file *));
extern void create_manifest_delta(int oldversion, int newversion, char *module);
extern void create_manifest_deltas(struct manifest *manifest, GList *last_versions_list);
extern void subtract_manifests_frontend(struct manifest *m1, struct manifest *m2);
extern void nest_manifest(struct manifest *parent, struct manifest *sub);
extern void nest_manifest_file(struct manifest *parent, struct file *file);
extern int manifest_subversion(struct manifest *parent, char *group);
extern void account_new_file(void);
extern void account_deleted_file(void);
extern void account_changed_file(void);
extern void print_statistics(int version1, int version2);
extern struct manifest *full_manifest_from_directory(int version);
extern struct manifest *sub_manifest_from_directory(char *component, int version);
extern void add_component_hashes_to_manifest(struct manifest *compm, struct manifest *fullm);
extern int write_manifest(struct manifest *manifest);
extern void hash_assign(char *src, char *dest);
extern bool hash_compare(char *hash1, char *hash2);
extern void hash_set_zeros(char *hash);
extern bool hash_is_zeros(char *hash);
extern int compute_hash(struct file *file, char *filename) __attribute__((warn_unused_result));
extern void prepare_delta_dir(struct manifest *manifest);
extern void create_fullfiles(struct manifest *manifest);
extern bool create_download_content_for_group(const char *group);
extern bool compute_hash_with_xattrs(const char *group);
extern void clean_package_caches(char *subdir);
extern void update_chroot(char *dir);
extern void chroot_create_full(int newversion);
extern void read_group_file(char *filename);
extern void release_group_file(void);
extern char *group_status(char *group);
extern char *next_group(void);
extern void apply_heuristics(struct manifest *manifest);
extern int make_pack(struct packdata *pack);
extern void maximize_to_full(struct manifest *MoM, struct manifest *full);
extern void recurse_manifest(struct manifest *manifest);
extern void consolidate_submanifests(struct manifest *manifest);
extern void populate_file_struct(struct file *file, char *filename);
extern void download_exta_base_content(void);
extern char *get_elapsed_time(struct timeval *t1, struct timeval *t2);
extern void init_log(const char *prefix, const char *bundle, int start, int end);
extern void init_log_stdout(void);
extern void close_log(int version, int exit_status);
extern void __log_message(struct file *file, char *msg, char *filename, int linenr, const char *fmt, ...);
#define LOG(file, msg, fmt...) __log_message(file, msg, __FILE__, __LINE__, fmt)
extern int previous_version_manifest(struct manifest *mom, char *name);
extern void type_change_detection(struct manifest *manifest);
extern void rename_detection(struct manifest *manifest);
extern void link_renames(GList *newfiles, int to_version);
extern void final_link(GList *files);
extern void __create_delta(struct file *file, int from_version, char *from_hash);
extern void account_delta_hit(void);
extern void account_delta_miss(void);
extern FILE *fopen_exclusive(const char *filename); /* no mode, opens for write only */
extern void dump_file_info(struct file *file);
extern void string_or_die(char **strp, const char *fmt, ...);
extern void print_elapsed_time(const char *step, struct timeval *previous_time, struct timeval *current_time);
extern int system_argv_pipe(char *const lhscmd[], char *const rhscmd[]);
extern int system_argv_pipe_fd(int lnewstdinfd, int lnewstderrfd, char *const lhscmd[],
int rnewstdoutfd, int rnewstderrfd, char *const rhscmd[]);
extern void pipe_monitor(int lnewstdinfd, int lnewstderrfd, char *const lhscmd[],
int rnewstdoutfd, int rnewstderrfd, char *const rhscmd[]);
extern int system_argv(char *const argv[]);
extern int system_argv_fd(int newstdinfd, int newstdoutfd, int newstderrfd, char *const cmd[]);
extern pid_t system_argv_fd_nowait(int newstdinfd, int newstdoutfd, int newstderrfd, int closefd, char *const cmd[]);
extern void exec_cmd_fd(int newstdinfd, int newstdoutfd, int newstderrfd, int closefd, char *const cmd[]);
extern void move_fd(int oldfd, int newfd);
extern int wait_process_terminate(pid_t pid);
extern int num_threads(float scaling);
extern bool file_is_debuginfo(const char *path);
#endif
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