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// SPDX-License-Identifier: LGPL-2.1+
/*
* Copyright (C) 2018 Red Hat, Inc.
*/
#include "nm-default.h"
#include "nm-core-utils.h"
#include "nm-core-internal.h"
#include "nm-keyfile/nm-keyfile-internal.h"
#include "nm-initrd-generator.h"
#include "nm-glib-aux/nm-io-utils.h"
/*****************************************************************************/
#define _NMLOG(level, domain, ...) \
nm_log ((level), (domain), NULL, NULL, \
"initrd-generator: " _NM_UTILS_MACRO_FIRST (__VA_ARGS__) \
_NM_UTILS_MACRO_REST (__VA_ARGS__))
/*****************************************************************************/
static void
output_conn (gpointer key, gpointer value, gpointer user_data)
{
const char *basename = key;
NMConnection *connection = value;
char *connections_dir = user_data;
gs_unref_keyfile GKeyFile *file = NULL;
gs_free char *data = NULL;
gs_free_error GError *error = NULL;
gsize len;
if (!nm_connection_normalize (connection, NULL, NULL, &error))
goto err_out;
file = nm_keyfile_write (connection, NULL, NULL, &error);
if (file == NULL)
goto err_out;
data = g_key_file_to_data (file, &len, &error);
if (!data)
goto err_out;
if (connections_dir) {
gs_free char *filename = NULL;
gs_free char *full_filename = NULL;
filename = nm_keyfile_utils_create_filename (basename, TRUE);
full_filename = g_build_filename (connections_dir, filename, NULL);
if (!nm_utils_file_set_contents (full_filename,
data,
len,
0600,
NULL,
&error))
goto err_out;
} else
g_print ("\n*** Connection '%s' ***\n\n%s", basename, data);
return;
err_out:
g_print ("%s\n", error->message);
}
#define DEFAULT_SYSFS_DIR "/sys"
#define DEFAULT_INITRD_DATA_DIR NMRUNDIR "/initrd"
int
main (int argc, char *argv[])
{
GHashTable *connections;
gs_free char *connections_dir = NULL;
gs_free char *initrd_dir = NULL;
gs_free char *sysfs_dir = NULL;
gboolean dump_to_stdout = FALSE;
gs_strfreev char **remaining = NULL;
GOptionEntry option_entries[] = {
{ "connections-dir", 'c', 0, G_OPTION_ARG_FILENAME, &connections_dir, "Output connection directory", NM_KEYFILE_PATH_NAME_RUN },
{ "initrd-data-dir", 'i', 0, G_OPTION_ARG_FILENAME, &initrd_dir, "Output initrd data directory", DEFAULT_INITRD_DATA_DIR },
{ "sysfs-dir", 'd', 0, G_OPTION_ARG_FILENAME, &sysfs_dir, "The sysfs mount point", DEFAULT_SYSFS_DIR },
{ "stdout", 's', 0, G_OPTION_ARG_NONE, &dump_to_stdout, "Dump connections to standard output", NULL },
{ G_OPTION_REMAINING, '\0', 0, G_OPTION_ARG_STRING_ARRAY, &remaining, NULL, NULL },
{ NULL }
};
GOptionContext *option_context;
gs_free_error GError *error = NULL;
int errsv;
option_context = g_option_context_new ("-- [ip=...] [rd.route=...] [bridge=...] [bond=...] [team=...] [vlan=...] "
"[bootdev=...] [nameserver=...] [rd.peerdns=...] [rd.bootif=...] [BOOTIF=...] [rd.znet=...] ... ");
g_option_context_set_summary (option_context, "Generate early NetworkManager configuration.");
g_option_context_set_description (option_context,
"This tool scans the command line for options relevant to network\n"
"configuration and creates configuration files for an early instance\n"
"of NetworkManager run from the initial ramdisk during early boot.");
g_option_context_add_main_entries (option_context, option_entries, GETTEXT_PACKAGE);
if (!g_option_context_parse (option_context, &argc, &argv, &error)) {
_LOGW (LOGD_CORE, "%s", error->message);
return 1;
}
if (!remaining) {
/* No arguments, no networking. Don't bother. */
return 0;
}
if (!connections_dir)
connections_dir = g_strdup (NM_KEYFILE_PATH_NAME_RUN);
if (!sysfs_dir)
sysfs_dir = g_strdup (DEFAULT_SYSFS_DIR);
if (!initrd_dir)
initrd_dir = g_strdup (DEFAULT_INITRD_DATA_DIR);
if (dump_to_stdout)
nm_clear_g_free (&connections_dir);
if (connections_dir && g_mkdir_with_parents (connections_dir, 0755) != 0) {
errsv = errno;
_LOGW (LOGD_CORE, "%s: %s", connections_dir, nm_strerror_native (errsv));
return 1;
}
connections = nmi_cmdline_reader_parse (sysfs_dir, (const char *const*) remaining);
g_hash_table_foreach (connections, output_conn, connections_dir);
g_hash_table_destroy (connections);
if (g_mkdir_with_parents (initrd_dir, 0755) != 0) {
errsv = errno;
_LOGW (LOGD_CORE, "%s: %s", initrd_dir, nm_strerror_native (errsv));
return 1;
}
return 0;
}
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