/* ----------------------------------------------------------------------- * * * Copyright 2010 Intel Corp. - All Rights Reserved * * This program 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, Inc., 53 Temple Place Ste 330, * Boston MA 02111-1307, USA; either version 2 of the License, or * (at your option) any later version; incorporated herein by reference. * * ----------------------------------------------------------------------- */ /* * syslxopt.c * * parse cmdline for extlinux and syslinux installer * */ #include #include #include #include #include #include #include #include "version.h" #include "syslxcom.h" #include "syslxfs.h" #include "syslxopt.h" /* These are the options we can set their values */ struct sys_options opt = { .sectors = 0, .heads = 0, .raid_mode = 0, .stupid_mode = 0, .reset_adv = 0, .set_once = NULL, .update_only = -1, .directory = NULL, .device = NULL, .offset = 0, .menu_save = NULL, .install_mbr = 0, .activate_partition = 0, .force = 0, .bootsecfile = NULL, }; const struct option long_options[] = { {"force", 0, NULL, 'f'}, /* DOS/Win32/mtools only */ {"install", 0, NULL, 'i'}, {"directory", 1, NULL, 'd'}, {"offset", 1, NULL, 't'}, {"update", 0, NULL, 'U'}, {"zipdrive", 0, NULL, 'z'}, {"sectors", 1, NULL, 'S'}, {"stupid", 0, NULL, 's'}, {"heads", 1, NULL, 'H'}, {"raid-mode", 0, NULL, 'r'}, {"version", 0, NULL, 'v'}, {"help", 0, NULL, 'h'}, {"once", 1, NULL, OPT_ONCE}, {"clear-once", 0, NULL, 'O'}, {"reset-adv", 0, NULL, OPT_RESET_ADV}, {"menu-save", 1, NULL, 'M'}, {"mbr", 0, NULL, 'm'}, /* DOS/Win32 only */ {"active", 0, NULL, 'a'}, /* DOS/Win32 only */ {"device", 1, NULL, OPT_DEVICE}, {NULL, 0, NULL, 0} }; const char short_options[] = "t:fid:UuzsS:H:rvho:OM:ma"; void __attribute__ ((noreturn)) usage(int rv, enum syslinux_mode mode) { switch (mode) { case MODE_SYSLINUX: /* For unmounted fs installation (syslinux) */ fprintf(stderr, "Usage: %s [options] device\n" " --offset -t Offset of the file system on the device \n" " --directory -d Directory for installation target\n", program); break; case MODE_EXTLINUX: /* Mounted fs installation (extlinux) */ /* Actually extlinux can also use -d to provide a directory too... */ fprintf(stderr, "Usage: %s [options] directory\n" " --device Force use of a specific block device (experts only)\n", program); break; case MODE_SYSLINUX_DOSWIN: /* For fs installation under Windows (syslinux.exe) */ fprintf(stderr, "Usage: %s [options] : [bootsecfile]\n" " --directory -d Directory for installation target\n", program); break; } fprintf(stderr, " --install -i Install over the current bootsector\n" " --update -U Update a previous installation\n" " --zip -z Force zipdrive geometry (-H 64 -S 32)\n" " --sectors=# -S Force the number of sectors per track\n" " --heads=# -H Force number of heads\n" " --stupid -s Slow, safe and stupid mode\n" " --raid -r Fall back to the next device on boot failure\n" " --once=... %s Execute a command once upon boot\n" " --clear-once -O Clear the boot-once command\n" " --reset-adv Reset auxiliary data\n", mode == MODE_SYSLINUX ? " " : "-o"); /* * Have to chop this roughly in half for the DOS installer due * to limited output buffer size */ fprintf(stderr, " --menu-save= -M Set the label to select as default on the next boot\n"); if (mode == MODE_SYSLINUX_DOSWIN) fprintf(stderr, " --mbr -m Install an MBR\n" " --active -a Mark partition as active\n"); if (mode == MODE_SYSLINUX_DOSWIN || mode == MODE_SYSLINUX) fprintf(stderr, " --force -f Ignore precautions\n"); exit(rv); } void parse_options(int argc, char *argv[], enum syslinux_mode mode) { int o; program = argv[0]; while ((o = getopt_long(argc, argv, short_options, long_options, NULL)) != EOF) { switch (o) { case 'f': opt.force = 1; break; case 'z': opt.heads = 64; opt.sectors = 32; break; case 'S': opt.sectors = strtoul(optarg, NULL, 0); if (opt.sectors < 1 || opt.sectors > 63) { fprintf(stderr, "%s: invalid number of sectors: %u (must be 1-63)\n", program, opt.sectors); exit(EX_USAGE); } break; case 'H': opt.heads = strtoul(optarg, NULL, 0); if (opt.heads < 1 || opt.heads > 256) { fprintf(stderr, "%s: invalid number of heads: %u (must be 1-256)\n", program, opt.heads); exit(EX_USAGE); } break; case 'r': opt.raid_mode = 1; break; case 's': opt.stupid_mode = 1; break; case 'i': opt.update_only = 0; break; case 'u': case 'U': opt.update_only = 1; break; case 'h': usage(0, mode); break; case 'o': if (mode == MODE_SYSLINUX) { fprintf(stderr, "%s: -o will change meaning in a future version, use -t or --offset\n", program); goto opt_offset; } /* else fall through */ case OPT_ONCE: opt.set_once = optarg; break; case 't': opt_offset: opt.offset = strtoul(optarg, NULL, 0); break; case 'O': opt.set_once = ""; break; case 'd': opt.directory = optarg; break; case OPT_RESET_ADV: opt.reset_adv = 1; break; case 'M': opt.menu_save = optarg; break; case 'm': opt.install_mbr = 1; break; case 'a': opt.activate_partition = 1; break; case OPT_DEVICE: if (mode != MODE_EXTLINUX) usage(EX_USAGE, mode); opt.device = optarg; break; case 'v': fprintf(stderr, "%s " VERSION_STR " Copyright 1994-" YEAR_STR " H. Peter Anvin et al\n", program); exit(0); default: fprintf(stderr, "%s: Unknown option: -%c\n", program, optopt); usage(EX_USAGE, mode); } } switch (mode) { case MODE_SYSLINUX: case MODE_SYSLINUX_DOSWIN: opt.device = argv[optind++]; break; case MODE_EXTLINUX: if (!opt.directory) opt.directory = argv[optind++]; break; } if (argv[optind] && (mode == MODE_SYSLINUX_DOSWIN)) /* Allow for the boot-sector argument */ opt.bootsecfile = argv[optind++]; if (argv[optind]) usage(EX_USAGE, mode); /* Excess arguments */ } /* * Make any user-specified ADV modifications in memory */ int modify_adv(void) { int rv = 0; if (opt.reset_adv) syslinux_reset_adv(syslinux_adv); if (opt.set_once) { if (syslinux_setadv(ADV_BOOTONCE, strlen(opt.set_once), opt.set_once)) { fprintf(stderr, "%s: not enough space for boot-once command\n", program); rv = -1; } } if (opt.menu_save) { if (syslinux_setadv(ADV_MENUSAVE, strlen(opt.menu_save), opt.menu_save)) { fprintf(stderr, "%s: not enough space for menu-save label\n", program); rv = -1; } } return rv; }