diff options
Diffstat (limited to 'grub-core/commands/syslinuxcfg.c')
| -rw-r--r-- | grub-core/commands/syslinuxcfg.c | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/grub-core/commands/syslinuxcfg.c b/grub-core/commands/syslinuxcfg.c new file mode 100644 index 0000000..7be28fa --- /dev/null +++ b/grub-core/commands/syslinuxcfg.c @@ -0,0 +1,217 @@ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2013 Free Software Foundation, Inc. + * + * GRUB is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * GRUB is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GRUB. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <grub/types.h> +#include <grub/misc.h> +#include <grub/extcmd.h> +#include <grub/mm.h> +#include <grub/err.h> +#include <grub/dl.h> +#include <grub/file.h> +#include <grub/normal.h> +#include <grub/script_sh.h> +#include <grub/i18n.h> +#include <grub/term.h> +#include <grub/syslinux_parse.h> +#include <grub/crypto.h> +#include <grub/auth.h> +#include <grub/disk.h> +#include <grub/partition.h> + +GRUB_MOD_LICENSE ("GPLv3+"); + +/* Helper for syslinux_file. */ +static grub_err_t +syslinux_file_getline (char **line, int cont __attribute__ ((unused)), + void *data __attribute__ ((unused))) +{ + *line = 0; + return GRUB_ERR_NONE; +} + +static const struct grub_arg_option options[] = + { + {"root", 'r', 0, + N_("root directory of the syslinux disk [default=/]."), + N_("DIR"), ARG_TYPE_STRING}, + {"cwd", 'c', 0, + N_("current directory of syslinux [default is parent directory of input file]."), + N_("DIR"), ARG_TYPE_STRING}, + {"isolinux", 'i', 0, N_("assume input is an isolinux configuration file."), 0, 0}, + {"pxelinux", 'p', 0, N_("assume input is a pxelinux configuration file."), 0, 0}, + {"syslinux", 's', 0, N_("assume input is a syslinux configuration file."), 0, 0}, + {0, 0, 0, 0, 0, 0} + }; + +enum + { + OPTION_ROOT, + OPTION_CWD, + OPTION_ISOLINUX, + OPTION_PXELINUX, + OPTION_SYSLINUX + }; + +static grub_err_t +syslinux_file (grub_extcmd_context_t ctxt, const char *filename) +{ + char *result; + const char *root = ctxt->state[OPTION_ROOT].set ? ctxt->state[OPTION_ROOT].arg : "/"; + const char *cwd = ctxt->state[OPTION_CWD].set ? ctxt->state[OPTION_CWD].arg : NULL; + grub_syslinux_flavour_t flav = GRUB_SYSLINUX_UNKNOWN; + char *cwdf = NULL; + grub_menu_t menu; + + if (ctxt->state[OPTION_ISOLINUX].set) + flav = GRUB_SYSLINUX_ISOLINUX; + if (ctxt->state[OPTION_PXELINUX].set) + flav = GRUB_SYSLINUX_PXELINUX; + if (ctxt->state[OPTION_SYSLINUX].set) + flav = GRUB_SYSLINUX_SYSLINUX; + + if (!cwd) + { + char *p; + cwdf = grub_strdup (filename); + if (!cwdf) + return grub_errno; + p = grub_strrchr (cwdf, '/'); + if (!p) + { + grub_free (cwdf); + cwd = "/"; + cwdf = NULL; + } + else + { + *p = '\0'; + cwd = cwdf; + } + } + + grub_dprintf ("syslinux", + "transforming syslinux config %s, root = %s, cwd = %s\n", + filename, root, cwd); + + result = grub_syslinux_config_file (root, root, cwd, cwd, filename, flav); + if (!result) + return grub_errno; + + grub_dprintf ("syslinux", "syslinux config transformed\n"); + + menu = grub_env_get_menu (); + if (! menu) + { + menu = grub_zalloc (sizeof (*menu)); + if (! menu) + { + grub_free (result); + return grub_errno; + } + + grub_env_set_menu (menu); + } + + grub_normal_parse_line (result, syslinux_file_getline, NULL); + grub_print_error (); + grub_free (result); + grub_free (cwdf); + + return GRUB_ERR_NONE; +} + +static grub_err_t +grub_cmd_syslinux_source (grub_extcmd_context_t ctxt, + int argc, char **args) +{ + int new_env, extractor; + grub_err_t ret; + + if (argc != 1) + return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("filename expected")); + + extractor = (ctxt->extcmd->cmd->name[0] == 'e'); + new_env = (ctxt->extcmd->cmd->name[extractor ? (sizeof ("extract_syslinux_entries_") - 1) + : (sizeof ("syslinux_") - 1)] == 'c'); + + if (new_env) + grub_cls (); + + if (new_env && !extractor) + grub_env_context_open (); + if (extractor) + grub_env_extractor_open (!new_env); + + ret = syslinux_file (ctxt, args[0]); + + if (new_env) + { + grub_menu_t menu; + menu = grub_env_get_menu (); + if (menu && menu->size) + grub_show_menu (menu, 1, 0); + if (!extractor) + grub_env_context_close (); + } + if (extractor) + grub_env_extractor_close (!new_env); + + return ret; +} + + +static grub_extcmd_t cmd_source, cmd_configfile; +static grub_extcmd_t cmd_source_extract, cmd_configfile_extract; + +GRUB_MOD_INIT(syslinuxcfg) +{ + cmd_source + = grub_register_extcmd ("syslinux_source", + grub_cmd_syslinux_source, 0, + N_("FILE"), + /* TRANSLATORS: "syslinux config" means + "config as used by syslinux". */ + N_("Execute syslinux config in same context"), + options); + cmd_configfile + = grub_register_extcmd ("syslinux_configfile", + grub_cmd_syslinux_source, 0, + N_("FILE"), + N_("Execute syslinux config in new context"), + options); + cmd_source_extract + = grub_register_extcmd ("extract_syslinux_entries_source", + grub_cmd_syslinux_source, 0, + N_("FILE"), + N_("Execute syslinux config in same context taking only menu entries"), + options); + cmd_configfile_extract + = grub_register_extcmd ("extract_syslinux_entries_configfile", + grub_cmd_syslinux_source, 0, + N_("FILE"), + N_("Execute syslinux config in new context taking only menu entries"), + options); +} + +GRUB_MOD_FINI(syslinuxcfg) +{ + grub_unregister_extcmd (cmd_source); + grub_unregister_extcmd (cmd_configfile); + grub_unregister_extcmd (cmd_source_extract); + grub_unregister_extcmd (cmd_configfile_extract); +} |