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-rw-r--r--lib/libalpm/be_files.c235
1 files changed, 149 insertions, 86 deletions
diff --git a/lib/libalpm/be_files.c b/lib/libalpm/be_files.c
index 00e631e0..1e59055c 100644
--- a/lib/libalpm/be_files.c
+++ b/lib/libalpm/be_files.c
@@ -36,6 +36,7 @@
/* libalpm */
#include "db.h"
#include "alpm_list.h"
+#include "cache.h"
#include "log.h"
#include "util.h"
#include "alpm.h"
@@ -43,24 +44,163 @@
#include "package.h"
#include "delta.h"
#include "deps.h"
+#include "dload.h"
-/* This function is used to convert the downloaded db file to the proper backend
- * format
+/*
+ * Return the last update time as number of seconds from the epoch.
+ * Returns 0 if the value is unknown or can't be read.
+ */
+time_t getlastupdate(const pmdb_t *db)
+{
+ FILE *fp;
+ char *file;
+ time_t ret = 0;
+
+ ALPM_LOG_FUNC;
+
+ if(db == NULL) {
+ return(ret);
+ }
+
+ /* db->path + '.lastupdate' + NULL */
+ MALLOC(file, strlen(db->path) + 12, RET_ERR(PM_ERR_MEMORY, ret));
+ sprintf(file, "%s.lastupdate", db->path);
+
+ /* get the last update time, if it's there */
+ if((fp = fopen(file, "r")) == NULL) {
+ free(file);
+ return(ret);
+ } else {
+ char line[64];
+ if(fgets(line, sizeof(line), fp)) {
+ ret = atol(line);
+ }
+ }
+ fclose(fp);
+ free(file);
+ return(ret);
+}
+
+/*
+ * writes the dbpath/.lastupdate file with the value in time
+ */
+int setlastupdate(const pmdb_t *db, time_t time)
+{
+ FILE *fp;
+ char *file;
+ int ret = 0;
+
+ ALPM_LOG_FUNC;
+
+ if(db == NULL || time == 0) {
+ return(-1);
+ }
+
+ /* db->path + '.lastupdate' + NULL */
+ MALLOC(file, strlen(db->path) + 12, RET_ERR(PM_ERR_MEMORY, ret));
+ sprintf(file, "%s.lastupdate", db->path);
+
+ if((fp = fopen(file, "w")) == NULL) {
+ free(file);
+ return(-1);
+ }
+ if(fprintf(fp, "%ju", (uintmax_t)time) <= 0) {
+ ret = -1;
+ }
+ fclose(fp);
+ free(file);
+ return(ret);
+}
+
+/** Update a package database
+ * @param force if true, then forces the update, otherwise update only in case
+ * the database isn't up to date
+ * @param db pointer to the package database to update
+ * @return 0 on success, > 0 on error (pm_errno is set accordingly), < 0 if up
+ * to date
*/
-int _alpm_db_install(pmdb_t *db, const char *dbfile)
+int SYMEXPORT alpm_db_update(int force, pmdb_t *db)
{
+ alpm_list_t *lp;
+ char path[PATH_MAX];
+ time_t newmtime = 0, lastupdate = 0;
+ const char *dbpath;
+ int ret;
+
ALPM_LOG_FUNC;
- /* TODO we should not simply unpack the archive, but better parse it and
- * db_write each entry (see sync_load_dbarchive to get archive content) */
- _alpm_log(PM_LOG_DEBUG, "unpacking database '%s'\n", dbfile);
+ /* Sanity checks */
+ ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
+ ASSERT(db != NULL && db != handle->db_local, RET_ERR(PM_ERR_WRONG_ARGS, -1));
+ /* Verify we are in a transaction. This is done _mainly_ because we need a DB
+ * lock - if we update without a db lock, we may kludge some other pacman
+ * process that _has_ a lock.
+ */
+ ASSERT(handle->trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
+ ASSERT(handle->trans->state == STATE_INITIALIZED, RET_ERR(PM_ERR_TRANS_NOT_INITIALIZED, -1));
+ ASSERT(handle->trans->type == PM_TRANS_TYPE_SYNC, RET_ERR(PM_ERR_TRANS_TYPE, -1));
+
+ if(!alpm_list_find_ptr(handle->dbs_sync, db)) {
+ RET_ERR(PM_ERR_DB_NOT_FOUND, -1);
+ }
+
+ if(!force) {
+ /* get the lastupdate time */
+ lastupdate = getlastupdate(db);
+ if(lastupdate == 0) {
+ _alpm_log(PM_LOG_DEBUG, "failed to get lastupdate time for %s\n",
+ db->treename);
+ }
+ }
+
+ snprintf(path, PATH_MAX, "%s" DBEXT, db->treename);
+ dbpath = alpm_option_get_dbpath();
+
+ ret = _alpm_download_single_file(path, db->servers, dbpath,
+ lastupdate, &newmtime);
+
+ if(ret == 1) {
+ /* mtimes match, do nothing */
+ pm_errno = 0;
+ return(1);
+ } else if(ret == -1) {
+ /* pm_errno was set by the download code */
+ _alpm_log(PM_LOG_DEBUG, "failed to sync db: %s\n", alpm_strerrorlast());
+ return(-1);
+ } else {
+ /* form the path to the db location */
+ snprintf(path, PATH_MAX, "%s%s" DBEXT, dbpath, db->treename);
+
+ /* remove the old dir */
+ _alpm_log(PM_LOG_DEBUG, "flushing database %s\n", db->path);
+ for(lp = _alpm_db_get_pkgcache(db); lp; lp = lp->next) {
+ pmpkg_t *pkg = lp->data;
+ if(pkg && _alpm_db_remove(db, pkg) == -1) {
+ _alpm_log(PM_LOG_ERROR, _("could not remove database entry %s%s\n"), db->treename,
+ alpm_pkg_get_name(pkg));
+ RET_ERR(PM_ERR_DB_REMOVE, -1);
+ }
+ }
+
+ /* Cache needs to be rebuilt */
+ _alpm_db_free_pkgcache(db);
- if(_alpm_unpack(dbfile, db->path, NULL)) {
- RET_ERR(PM_ERR_SYSTEM, -1);
+ /* uncompress the sync database */
+ if(_alpm_unpack(path, db->path, NULL)) {
+ RET_ERR(PM_ERR_SYSTEM, -1);
+ }
+ unlink(path);
+
+ /* if we have a new mtime, set the DB last update value */
+ if(newmtime) {
+ _alpm_log(PM_LOG_DEBUG, "sync: new mtime for %s: %ju\n",
+ db->treename, (uintmax_t)newmtime);
+ setlastupdate(db, newmtime);
+ }
}
- return unlink(dbfile);
+ return(0);
}
int _alpm_db_open(pmdb_t *db)
@@ -94,17 +234,6 @@ void _alpm_db_close(pmdb_t *db)
}
}
-void _alpm_db_rewind(pmdb_t *db)
-{
- ALPM_LOG_FUNC;
-
- if(db == NULL || db->handle == NULL) {
- return;
- }
-
- rewinddir(db->handle);
-}
-
static int splitname(const char *target, pmpkg_t *pkg)
{
/* the format of a db entry is as follows:
@@ -740,70 +869,4 @@ int _alpm_db_remove(pmdb_t *db, pmpkg_t *info)
return(0);
}
-/*
- * Return the last update time as number of seconds from the epoch.
- * Returns 0 if the value is unknown or can't be read.
- */
-time_t _alpm_db_getlastupdate(const pmdb_t *db)
-{
- FILE *fp;
- char *file;
- time_t ret = 0;
-
- ALPM_LOG_FUNC;
-
- if(db == NULL) {
- return(ret);
- }
-
- /* db->path + '.lastupdate' + NULL */
- MALLOC(file, strlen(db->path) + 12, RET_ERR(PM_ERR_MEMORY, ret));
- sprintf(file, "%s.lastupdate", db->path);
-
- /* get the last update time, if it's there */
- if((fp = fopen(file, "r")) == NULL) {
- free(file);
- return(ret);
- } else {
- char line[64];
- if(fgets(line, sizeof(line), fp)) {
- ret = atol(line);
- }
- }
- fclose(fp);
- free(file);
- return(ret);
-}
-
-/*
- * writes the dbpath/.lastupdate file with the value in time
- */
-int _alpm_db_setlastupdate(const pmdb_t *db, time_t time)
-{
- FILE *fp;
- char *file;
- int ret = 0;
-
- ALPM_LOG_FUNC;
-
- if(db == NULL || time == 0) {
- return(-1);
- }
-
- /* db->path + '.lastupdate' + NULL */
- MALLOC(file, strlen(db->path) + 12, RET_ERR(PM_ERR_MEMORY, ret));
- sprintf(file, "%s.lastupdate", db->path);
-
- if((fp = fopen(file, "w")) == NULL) {
- free(file);
- return(-1);
- }
- if(fprintf(fp, "%ju", (uintmax_t)time) <= 0) {
- ret = -1;
- }
- fclose(fp);
- free(file);
- return(ret);
-}
-
/* vim: set ts=2 sw=2 noet: */
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