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pacman
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Rework the alpm_unpack functions 

Add support to extract a list of entries

Signed-off-by: Xavier Chantry <shiningxc@gmail.com>
Signed-off-by: Dan McGee <dan@archlinux.org>
This commit is contained in:
Xavier Chantry 2009-10-10 22:49:24 +02:00 committed by Dan McGee
parent 471b1fa543
commit 14ab02e289
4 changed files with 50 additions and 14 deletions
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2
lib/libalpm/be_files.c
View File

@ -245,7 +245,7 @@ int SYMEXPORT alpm_db_update(int force, pmdb_t *db)
/* uncompress the sync database */
checkdbdir(db);
ret = _alpm_unpack(dbfilepath, syncdbpath, NULL);
ret = _alpm_unpack(dbfilepath, syncdbpath, NULL, 0);
if(ret) {
free(dbfilepath);
RET_ERR(PM_ERR_SYSTEM, -1);

2
lib/libalpm/trans.c
View File

@ -368,7 +368,7 @@ int _alpm_runscriptlet(const char *root, const char *installfn,
/* either extract or copy the scriptlet */
snprintf(scriptfn, PATH_MAX, "%s/.INSTALL", tmpdir);
if(!strcmp(script, "pre_upgrade") || !strcmp(script, "pre_install")) {
if(_alpm_unpack(installfn, tmpdir, ".INSTALL")) {
if(_alpm_unpack_single(installfn, tmpdir, ".INSTALL")) {
retval = 1;
}
} else {

55
lib/libalpm/util.c
View File

@ -238,14 +238,38 @@ int _alpm_lckrm()
/* Compression functions */
/**
* @brief Unpack a specific file or all files in an archive.
* @brief Unpack a specific file in an archive.
*
* @param archive the archive to unpack
* @param prefix where to extract the files
* @param fn a file within the archive to unpack or NULL for all
* @param fn a file within the archive to unpack
* @return 0 on success, 1 on failure
*/
int _alpm_unpack(const char *archive, const char *prefix, const char *fn)
int _alpm_unpack_single(const char *archive, const char *prefix, const char *fn)
{
alpm_list_t *list = NULL;
int ret = 0;
if(fn == NULL) {
return(1);
}
list = alpm_list_add(list, (void *)fn);
ret = _alpm_unpack(archive, prefix, list, 1);
alpm_list_free(list);
return(ret);
}
/**
* @brief Unpack a list of files in an archive.
*
* @param archive the archive to unpack
* @param prefix where to extract the files
* @param list a list of files within the archive to unpack or
* NULL for all
* @param breakfirst break after the first entry found
*
* @return 0 on success, 1 on failure
*/
int _alpm_unpack(const char *archive, const char *prefix, alpm_list_t *list, int breakfirst)
{
int ret = 0;
mode_t oldmask;
@ -298,14 +322,23 @@ int _alpm_unpack(const char *archive, const char *prefix, const char *fn)
archive_entry_set_perm(entry, 0755);
}
/* If a specific file was requested skip entries that don't match. */
if (fn && strcmp(fn, entryname)) {
_alpm_log(PM_LOG_DEBUG, "skipping: %s\n", entryname);
if (archive_read_data_skip(_archive) != ARCHIVE_OK) {
ret = 1;
goto cleanup;
/* If specific files were requested, skip entries that don't match. */
if(list) {
char *prefix = strdup(entryname);
char *p = strstr(prefix,"/");
if(p) {
*(p+1) = '\0';
}
char *found = alpm_list_find_str(list, prefix);
free(prefix);
if(!found) {
_alpm_log(PM_LOG_DEBUG, "skipping: %s\n", entryname);
if (archive_read_data_skip(_archive) != ARCHIVE_OK) {
ret = 1;
goto cleanup;
}
continue;
}
continue;
}
/* Extract the archive entry. */
@ -321,7 +354,7 @@ int _alpm_unpack(const char *archive, const char *prefix, const char *fn)
goto cleanup;
}
if(fn) {
if(breakfirst) {
break;
}
}

5
lib/libalpm/util.h
View File

@ -26,6 +26,8 @@
#include "config.h"
#include "alpm_list.h"
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
@ -62,7 +64,8 @@ int _alpm_copyfile(const char *src, const char *dest);
char *_alpm_strtrim(char *str);
int _alpm_lckmk();
int _alpm_lckrm();
int _alpm_unpack(const char *archive, const char *prefix, const char *fn);
int _alpm_unpack_single(const char *archive, const char *prefix, const char *fn);
int _alpm_unpack(const char *archive, const char *prefix, alpm_list_t *list, int breakfirst);
int _alpm_rmrf(const char *path);
int _alpm_logaction(int usesyslog, FILE *f, const char *fmt, va_list args);
int _alpm_run_chroot(const char *root, const char *cmd);