int
repodata_flush(struct xbps_handle *xhp, const char *repodir,
xbps_dictionary_t idx, xbps_dictionary_t idxfiles)
{
struct archive *ar;
mode_t myumask;
char *repofile, *tname, *xml;
int repofd;
/* Create a tempfile for our repository archive */
repofile = xbps_repo_path(xhp, repodir);
tname = xbps_xasprintf("%s.XXXXXXXXXX", repofile);
if ((repofd = mkstemp(tname)) == -1)
return errno;
/* Create and write our repository archive */
ar = archive_write_new();
assert(ar);
archive_write_set_compression_gzip(ar);
archive_write_set_format_pax_restricted(ar);
archive_write_set_options(ar, "compression-level=9");
archive_write_open_fd(ar, repofd);
xml = xbps_dictionary_externalize(idx);
assert(xml);
if (xbps_archive_append_buf(ar, xml, strlen(xml),
XBPS_PKGINDEX, 0644, "root", "root") != 0) {
free(xml);
return -1;
}
free(xml);
xml = xbps_dictionary_externalize(idxfiles);
assert(xml);
if (xbps_archive_append_buf(ar, xml, strlen(xml),
XBPS_PKGINDEX_FILES, 0644, "root", "root") != 0) {
free(xml);
return -1;
}
free(xml);
archive_write_finish(ar);
/* Write data to tempfile and rename */
fdatasync(repofd);
myumask = umask(0);
(void)umask(myumask);
assert(fchmod(repofd, 0666 & ~myumask) != -1);
close(repofd);
rename(tname, repofile);
free(repofile);
free(tname);
return 0;
}
static bool
repo_open_remote(struct xbps_repo *repo)
{
char *rpath;
bool rv;
rpath = xbps_repo_path(repo->xhp, repo->uri);
rv = xbps_repo_fetch_remote(repo, rpath);
free(rpath);
if (rv) {
xbps_dbg_printf(repo->xhp, "[repo] `%s' used remotely (kept in memory).\n", repo->uri);
if (repo->xhp->state_cb && xbps_repo_key_import(repo) != 0)
rv = false;
}
return rv;
}
bool
xbps_repo_lock(struct xbps_handle *xhp, const char *repodir,
int *lockfd, char **lockfname)
{
char *repofile, *lockfile;
int fd, rv;
assert(repodir);
assert(lockfd);
assert(lockfname);
repofile = xbps_repo_path(xhp, repodir);
assert(repofile);
lockfile = xbps_xasprintf("%s.lock", repofile);
free(repofile);
for (;;) {
fd = open(lockfile, O_WRONLY|O_CREAT|O_EXCL|O_CLOEXEC, 0660);
rv = errno;
if (fd != -1)
break;
if (rv != EEXIST) {
xbps_dbg_printf(xhp, "[repo] `%s' failed to "
"create lock file %s\n", lockfile, strerror(rv));
free(lockfile);
return false;
} else {
xbps_dbg_printf(xhp, "[repo] `%s' lock file exists,"
"waiting for 1s...\n", lockfile);
sleep(1);
}
}
*lockfname = lockfile;
*lockfd = fd;
return true;
}
struct xbps_repo *
xbps_repo_open(struct xbps_handle *xhp, const char *url)
{
struct xbps_repo *repo;
const char *arch;
char *repofile;
assert(xhp);
assert(url);
if (xhp->target_arch)
arch = xhp->target_arch;
else
arch = xhp->native_arch;
repo = calloc(1, sizeof(struct xbps_repo));
assert(repo);
repo->fd = -1;
repo->xhp = xhp;
repo->uri = url;
if (xbps_repository_is_remote(url)) {
/* remote repository */
char *rpath;
if ((rpath = xbps_get_remote_repo_string(url)) == NULL) {
free(repo);
return NULL;
}
repofile = xbps_xasprintf("%s/%s/%s-repodata", xhp->metadir, rpath, arch);
free(rpath);
repo->is_remote = true;
} else {
/* local repository */
repofile = xbps_repo_path(xhp, url);
}
/*
* In memory repo sync.
*/
if (xhp->flags & XBPS_FLAG_REPOS_MEMSYNC) {
if (repo_open_remote(repo))
return repo;
goto out;
}
/*
* Open the repository archive.
*/
repo->fd = open(repofile, O_RDONLY|O_CLOEXEC);
if (repo->fd == -1) {
int rv = errno;
xbps_dbg_printf(xhp, "[repo] `%s' open repodata %s\n",
repofile, strerror(rv));
goto out;
}
if (repo_open_local(repo, repofile)) {
free(repofile);
return repo;
}
out:
free(repofile);
xbps_repo_close(repo);
return NULL;
}
