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Restore partially downloaded files to the temporary directory

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This allows downloads to be continued.

Signed-off-by: Allan McRae <allan@archlinux.org>
This commit is contained in:
Remi Gacogne 2024-03-20 16:35:21 +01:00 • committed by Allan McRae
parent e1a7b83e8e
commit cfa68f7b26
1 changed files with 35 additions and 1 deletions
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36
lib/libalpm/dload.c
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@ -575,7 +575,6 @@ static int curl_check_finished_download(alpm_handle_t *handle, CURLM *curlm, CUR
(*active_downloads_num)++;
return 2;
} else {
payload->unlink_on_fail = 1;
goto cleanup;
}
default:
@ -1127,6 +1126,39 @@ static int finalize_download_locations(alpm_list_t *payloads, const char *localp
return returnvalue;
}
static void prepare_resumable_downloads(alpm_list_t *payloads, const char *localpath,
const char *user)
{
struct passwd const *pw = NULL;
ASSERT(payloads != NULL, return);
ASSERT(localpath != NULL, return);
if(user != NULL) {
ASSERT((pw = getpwnam(user)) != NULL, return);
}
alpm_list_t *p;
for(p = payloads; p; p = p->next) {
struct dload_payload *payload = p->data;
if(!payload->tempfile_name) {
continue;
}
const char *filename = mbasename(payload->tempfile_name);
char *src = _alpm_get_fullpath(localpath, filename, "");;
struct stat st;
if(stat(src, &st) != 0 || st.st_size == 0) {
FREE(src);
continue;
}
if(rename(src, payload->tempfile_name) != 0) {
FREE(src);
continue;
}
if(pw != NULL) {
ASSERT(chown(payload->tempfile_name, pw->pw_uid, pw->pw_gid), return);
}
FREE(src);
}
}
/* Returns -1 if an error happened for a required file
* Returns 0 if a payload was actually downloaded
* Returns 1 if no files were downloaded and all errors were non-fatal
@ -1137,6 +1169,8 @@ int _alpm_download(alpm_handle_t *handle,
const char *temporary_localpath)
{
int ret;
prepare_resumable_downloads(payloads, localpath, handle->sandboxuser);
if(handle->fetchcb == NULL) {
#ifdef HAVE_LIBCURL
if(handle->sandboxuser) {