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pascal@13691
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1 #include <asm/limits.h>
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pascal@13691
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2 #include <sys/types.h>
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pascal@13691
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3 #include <unistd.h>
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pascal@13691
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4 #include <fcntl.h>
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pascal@13691
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5 #include <stdio.h>
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pascal@13691
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6 #include "iso9660.h"
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7 #include "bootlinux.h"
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pascal@13691
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8 #include "libdos.h"
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pascal@13691
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9
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pascal@13691
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10 static void usage(char *iso)
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11 {
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pascal@13691
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12 printf("Usage: %s [[@commands]|[kernel=<bzimage>] \
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13 [initrd=<rootfs>[,<rootfs2>...]] [bootfrom=<isofile>] ...]\n\n\
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14 Defaults: %s @tazboot.cmd or %s kernel=bzImage auto\n\n\
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15 Examples for tazboot.cmd:\n\n\
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16 bootfrom=\\isos\\slitaz-4.0.iso\n\
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17 kernel=boot/bzImage\n\
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18 initrd=boot/rootfs4.gz,boot/rootfs3.gz,boot/rootfs2.gz,boot/rootfs1.gz,\\slitaz\\extrafs.gz\n\
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19 rw root=/dev/null vga=normal autologin\n\n\
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pascal@17491
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20 kernel=\\slitaz\\elks\n\
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21 root=/dev/bda1 ro\n",iso,iso,iso);
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22 exit(1);
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23 }
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24
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pascal@13691
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25 static void bootiso(char **iso)
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26 {
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pascal@16025
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27 char *init = " rdinit=/init.exe", *mode="menu", *fmt="";
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28 char *s, c, rootfs[16], fallback[16], cmdline[256];
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29 int restart, isknoppix = 0;
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30 unsigned long magic;
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31
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32 if (isoreset(*iso)) return;
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33 !isoopen("boot") ||
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34 !isoopen("live") || // debian
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35 !isoopen("casper") || // ubuntu
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36 !isoopen("isolinux"); // zeroshell
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37 if (iso[1] && !strcmp(mode = iso[1], "text"))
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38 init = "";
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39 do {
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40 if (!isoopen(mode) || // custom
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41 !isoopen("bzImage") || // SliTaz
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42 !isoopen("vmlinuz") || // misc
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43 (!isoopen("linux") && ++isknoppix)) {
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44 magic = loadkernel();
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45 break;
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46 }
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pascal@17489
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47 } while (!isoopen("isolinux")); // Knoppix
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48 fallback[0] = 0;
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49 for (c = 0, restart = 1; isoreaddir(restart) == 0; restart = 0) {
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50 if (strstr(isofilename, ".gz"))
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51 strcpy(fallback, isofilename);
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pascal@16002
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52 if (strncmp(isofilename, "rootfs", 6)
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53 || c > isofilename[6]) continue;
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54 strcpy(rootfs, isofilename);
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55 c = isofilename[6];
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56 }
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57
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pascal@16025
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58 if (magic < 0x20630)
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pascal@14257
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59 init = ""; // Does not support multiple initramfs
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60
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61 if (magic > 0) {
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62 char *initrd = fallback;
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63
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64 fmt = "rw root=/dev/null bootfrom=%s%s magic=%lu mode=%s autologin";
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65 if (rootfs[0]) {
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66 initrd = rootfs;
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67 if (rootfs[6] != '.' && !isoopen("rootfs.gz"))
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68 loadinitrd(); // for loram
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69 }
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pascal@17489
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70 if (!isoopen(initrd)) {
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71 loadinitrd();
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72 }
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pascal@16025
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73 if (*init) {
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pascal@16025
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74 lseek(isofd, 24L, SEEK_SET);
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pascal@16025
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75 read(isofd, &magic, 4);
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76 isofilesize = magic & 0xFFFFL;
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pascal@16025
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77 isofileofs = 0x7EE0L - isofilesize;
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78 if (isofilesize) loadinitrd();
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79 else init="";
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80 }
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pascal@16025
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81 }
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pascal@17489
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82 if (isknoppix) {
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83 if (iso[0][1] == ':')
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84 *iso += 2;
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85 for (s = *iso; *s; s++)
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86 if (*s == '\\') *s = '/';
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87 }
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pascal@17489
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88 sprintf(cmdline, fmt, *iso, init, magic, mode);
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89 close(isofd);
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90 bootlinux(cmdline);
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91 }
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92
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93 static int stricmp(char *ref, char *s)
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94 {
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95 char c;
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96 while (*ref) {
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97 c = *s++;
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98 if (c >= 'A' && c <= 'Z') c += 'a' - 'A';
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99 c -= *ref++;
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100 if (c) return c;
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101 }
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pascal@13691
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102 return 0;
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103 }
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pascal@13691
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104
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pascal@16022
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105 static int chkstatus(int status, char *name)
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pascal@16022
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106 {
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pascal@16022
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107 if (status == -1)
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108 printf("%s not found.\n",name);
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109 return status;
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110 }
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pascal@16022
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111
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112 static char *iso;
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113 static int fakeopen(char *file)
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114 {
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115 if (file) {
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116 char *s = file;
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117 while (*s && *s != '\r' && *s != '\n') s++;
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118 *s = 0;
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119 }
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pascal@16012
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120 if (*file == '\\') {
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121 static fd = -1;
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122 if (fd >= 0) close(fd);
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123 fd = chkstatus(open(file, O_RDONLY), file);
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124 return fd;
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125 }
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pascal@13691
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126 if (iso) {
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pascal@16022
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127 chkstatus(isoreset(iso), iso);
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pascal@16022
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128 return chkstatus(isoopen(file), file);
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129 }
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130 close(isofd);
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pascal@16022
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131 isofd = chkstatus(open(file, O_RDONLY), file);
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132 if (isofd != -1) {
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133 isofileofs = 0;
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134 isofilesize = LONG_MAX;
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135 }
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136 return isofd;
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137 }
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pascal@13691
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138
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pascal@13691
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139 static char args[2048];
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pascal@13691
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140 int main(int argc, char *argv[])
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pascal@13691
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141 {
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pascal@13691
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142 char *kernel, *initrd, *cmdline, *cmdfile, *s;
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143
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144 argv[0] = progname();
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pascal@14268
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145 bootiso(argv); // iso ? parsing is /init.exe stuff !
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pascal@16022
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146 if (argc >= 2)
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pascal@14268
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147 bootiso(argv + 1);
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148
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149 chdirname(*argv);
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150 cmdfile = "tazboot.cmd";
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151 kernel = "bzImage";
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152 initrd = NULL;
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153 cmdline = "auto";
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154 if (argc > 1) {
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pascal@13691
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155 if (argv[1][0] == '@')
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156 cmdfile = argv[1] + 1;
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157 else {
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158 cmdfile = NULL;
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pascal@13691
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159 #asm
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pascal@13691
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160 push ds
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161 pop es
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pascal@13691
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162 mov si, #0x82
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163 mov di, #_args
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164 mov cx, #0x7E/2
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165 rep
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pascal@13697
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166 seg cs
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167 movsw
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pascal@13691
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168 #endasm
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pascal@13691
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169 }
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pascal@13691
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170 }
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pascal@13691
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171 if (cmdfile) {
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172 int fd;
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pascal@16025
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173 fd = chkstatus(open(cmdfile, O_RDONLY), cmdfile);
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174 if (fd != -1) {
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pascal@13691
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175 read(fd, args, sizeof(args));
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pascal@13691
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176 close(fd);
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pascal@13691
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177 for (s = args; s < args + sizeof(args) -1; s++) {
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pascal@13691
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178 if (*s == '\r') *s++ = ' ';
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pascal@13691
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179 if (*s == '\n') *s = ' ';
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pascal@13691
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180 }
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pascal@13691
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181 }
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pascal@13691
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182 }
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pascal@13691
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183 for (s = args; s < args + sizeof(args); s++) {
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pascal@13691
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184 if (*s == ' ') continue;
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pascal@13691
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185 if (stricmp("kernel=", s) == 0)
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186 kernel = s + 7;
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187 else if (stricmp("initrd=", s) == 0)
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pascal@13691
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188 initrd = s + 7;
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pascal@17489
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189 else if (stricmp("bootfrom=", s) == 0)
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pascal@13691
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190 iso = s + 4;
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pascal@13691
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191 else {
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pascal@13691
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192 cmdline = s;
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pascal@13691
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193 break;
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pascal@13691
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194 }
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pascal@13691
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195 while (*s && *s != ' ') s++;
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pascal@13691
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196 *s = 0;
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pascal@13691
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197 }
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pascal@16002
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198 if (cmdline) {
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pascal@16002
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199 char *last;
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pascal@16002
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200 for (s = cmdline; *s && *s != '\r' && *s != '\n'; s++)
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pascal@16002
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201 if (*s != ' ') last = s;
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pascal@16002
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202 *++last = 0;
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pascal@16002
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203 }
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pascal@13691
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204 if (fakeopen(kernel) == -1)
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pascal@13691
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205 usage(argv[0]);
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pascal@13691
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206 loadkernel();
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pascal@13691
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207 if (initrd) {
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pascal@13691
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208 char *p, *q = initrd;
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pascal@13691
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209 while (1) {
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pascal@13691
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210 char c;
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pascal@13691
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211 for (p = q; *p && *p != ','; p++);
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pascal@13691
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212 c = *p;
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pascal@13691
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213 *p = 0;
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pascal@13691
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214 if (fakeopen(q) != -1)
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pascal@13691
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215 loadinitrd();
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pascal@13691
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216 if (c == 0)
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pascal@13691
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217 break;
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pascal@13691
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218 q = ++p;
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pascal@13691
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219 }
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pascal@13691
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220 }
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pascal@13691
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221 bootlinux(cmdline);
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pascal@13691
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222 }
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