mirror of https://gerrit.osmocom.org/libosmocore
vty: Add a function to write the current config to a file.
This commit is contained in:
Holger Hans Peter Freyther
parent
8db7020c88
commit
738f13395d
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@ -7,4 +7,7 @@
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void vty_out_rate_ctr_group(struct vty *vty, const char *prefix,
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struct rate_ctr_group *ctrg);
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int osmo_vty_write_config_file(const char *filename);
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int osmo_vty_save_config_file(void);
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#endif
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@ -2268,31 +2268,19 @@ gDEFUN(config_list, config_list_cmd, "list", "Print command list\n")
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return CMD_SUCCESS;
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}
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/* Write current configuration into file. */
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DEFUN(config_write_file,
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config_write_file_cmd,
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"write file",
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"Write running configuration to memory, network, or terminal\n"
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"Write to configuration file\n")
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static int write_config_file(const char *config_file, char **outpath)
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{
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unsigned int i;
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int fd;
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struct cmd_node *node;
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char *config_file;
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char *config_file_tmp = NULL;
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char *config_file_sav = NULL;
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struct vty *file_vty;
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struct stat st;
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*outpath = NULL;
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/* Check and see if we are operating under vtysh configuration */
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if (host.config == NULL) {
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vty_out(vty, "Can't save to configuration file, using vtysh.%s",
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VTY_NEWLINE);
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return CMD_WARNING;
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}
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/* Get filename. */
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config_file = host.config;
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config_file_sav =
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_talloc_zero(tall_vty_cmd_ctx,
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strlen(config_file) + strlen(CONF_BACKUP_EXT) + 1,
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@ -2307,11 +2295,10 @@ DEFUN(config_write_file,
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/* Open file to configuration write. */
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fd = mkstemp(config_file_tmp);
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if (fd < 0) {
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vty_out(vty, "Can't open configuration file %s.%s",
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config_file_tmp, VTY_NEWLINE);
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*outpath = talloc_strdup(tall_vty_cmd_ctx, config_file_tmp);
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talloc_free(config_file_tmp);
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talloc_free(config_file_sav);
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return CMD_WARNING;
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return -1;
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}
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/* Make vty for configuration file. */
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@ -2334,38 +2321,37 @@ DEFUN(config_write_file,
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if (unlink(config_file_sav) != 0)
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if (errno != ENOENT) {
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vty_out(vty,
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"Can't unlink backup configuration file %s.%s",
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config_file_sav, VTY_NEWLINE);
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*outpath = talloc_strdup(tall_vty_cmd_ctx, config_file_sav);
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talloc_free(config_file_sav);
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talloc_free(config_file_tmp);
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unlink(config_file_tmp);
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return CMD_WARNING;
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return -2;
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}
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/* Only link the .sav file if the original file exists */
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if (stat(config_file, &st) == 0) {
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if (link(config_file, config_file_sav) != 0) {
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*outpath = talloc_strdup(tall_vty_cmd_ctx, config_file_sav);
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talloc_free(config_file_sav);
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talloc_free(config_file_tmp);
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unlink(config_file_tmp);
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return -3;
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}
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sync();
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if (unlink(config_file) != 0) {
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*outpath = talloc_strdup(tall_vty_cmd_ctx, config_file);
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talloc_free(config_file_sav);
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talloc_free(config_file_tmp);
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unlink(config_file_tmp);
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return -4;
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}
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if (link(config_file, config_file_sav) != 0) {
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vty_out(vty, "Can't backup old configuration file %s.%s",
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config_file_sav, VTY_NEWLINE);
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talloc_free(config_file_sav);
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talloc_free(config_file_tmp);
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unlink(config_file_tmp);
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return CMD_WARNING;
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}
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sync();
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if (unlink(config_file) != 0) {
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vty_out(vty, "Can't unlink configuration file %s.%s",
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config_file, VTY_NEWLINE);
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talloc_free(config_file_sav);
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talloc_free(config_file_tmp);
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unlink(config_file_tmp);
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return CMD_WARNING;
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}
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if (link(config_file_tmp, config_file) != 0) {
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vty_out(vty, "Can't save configuration file %s.%s", config_file,
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VTY_NEWLINE);
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*outpath = talloc_strdup(tall_vty_cmd_ctx, config_file);
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talloc_free(config_file_sav);
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talloc_free(config_file_tmp);
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unlink(config_file_tmp);
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return CMD_WARNING;
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return -5;
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}
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unlink(config_file_tmp);
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sync();
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@ -2374,13 +2360,70 @@ DEFUN(config_write_file,
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talloc_free(config_file_tmp);
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if (chmod(config_file, 0666 & ~CONFIGFILE_MASK) != 0) {
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vty_out(vty, "Can't chmod configuration file %s: %s (%d).%s",
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config_file, strerror(errno), errno, VTY_NEWLINE);
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*outpath = talloc_strdup(tall_vty_cmd_ctx, config_file);
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return -6;
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}
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return 0;
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}
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/* Write current configuration into file. */
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DEFUN(config_write_file,
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config_write_file_cmd,
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"write file",
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"Write running configuration to memory, network, or terminal\n"
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"Write to configuration file\n")
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{
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char *failed_file;
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int rc;
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if (host.config == NULL) {
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vty_out(vty, "Can't save to configuration file, using vtysh.%s",
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VTY_NEWLINE);
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return CMD_WARNING;
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}
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vty_out(vty, "Configuration saved to %s%s", config_file, VTY_NEWLINE);
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return CMD_SUCCESS;
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rc = write_config_file(host.config, &failed_file);
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switch (rc) {
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case -1:
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vty_out(vty, "Can't open configuration file %s.%s",
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failed_file, VTY_NEWLINE);
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rc = CMD_WARNING;
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break;
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case -2:
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vty_out(vty, "Can't unlink backup configuration file %s.%s",
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failed_file, VTY_NEWLINE);
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rc = CMD_WARNING;
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break;
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case -3:
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vty_out(vty, "Can't backup old configuration file %s.%s",
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failed_file, VTY_NEWLINE);
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rc = CMD_WARNING;
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break;
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case -4:
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vty_out(vty, "Can't unlink configuration file %s.%s",
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failed_file, VTY_NEWLINE);
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rc = CMD_WARNING;
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break;
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case -5:
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vty_out(vty, "Can't save configuration file %s.%s", failed_file,
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VTY_NEWLINE);
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rc = CMD_WARNING;
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break;
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case -6:
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vty_out(vty, "Can't chmod configuration file %s: %s (%d).%s",
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failed_file, strerror(errno), errno, VTY_NEWLINE);
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rc = CMD_WARNING;
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break;
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default:
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vty_out(vty, "Configuration saved to %s%s", host.config, VTY_NEWLINE);
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rc = CMD_SUCCESS;
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break;
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}
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talloc_free(failed_file);
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return rc;
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}
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ALIAS(config_write_file,
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@ -3160,6 +3203,47 @@ void install_default(enum node_type node)
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install_element(node, &show_running_config_cmd);
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}
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/**
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* \brief Write the current running config to a given file
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* \param[in] vty the vty of the code
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* \param[in] filename where to store the file
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* \return 0 in case of success.
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*
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* If the filename already exists create a filename.sav
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* version with the current code.
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*
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*/
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int osmo_vty_write_config_file(const char *filename)
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{
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char *failed_file;
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int rc;
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rc = write_config_file(filename, &failed_file);
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talloc_free(failed_file);
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return rc;
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}
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/**
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* \brief Save the current state to the config file
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* \return 0 in case of success.
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*
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* If the filename already exists create a filename.sav
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* version with the current code.
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*
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*/
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int osmo_vty_save_config_file(void)
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{
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char *failed_file;
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int rc;
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if (host.config == NULL)
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return -7;
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rc = write_config_file(host.config, &failed_file);
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talloc_free(failed_file);
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return rc;
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}
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/* Initialize command interface. Install basic nodes and commands. */
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void cmd_init(int terminal)
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{
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