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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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pascal@13691
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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>...]] [iso=<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 iso=\\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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20 kernel=\\slitaz\\vmlinuz\n\
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21 root=/dev/sda5 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 c, rootfs[16], cmdline[256];
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29 int restart;
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30 unsigned long magic;
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31
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32 if (isoreset(*iso) || isoopen("boot")) return;
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33 if (iso[1] && !strcmp(mode = iso[1], "text"))
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34 init = "";
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35 for (c = 0, restart = 1; isoreaddir(restart) == 0; restart = 0) {
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36 if (strncmp(isofilename, "rootfs", 6)
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37 || c > isofilename[6]) continue;
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38 strcpy(rootfs, isofilename);
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39 c = isofilename[6];
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40 }
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pascal@13691
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41 if (isoopen(mode))
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pascal@13691
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42 isoopen("bzImage");
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pascal@16025
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43 magic = loadkernel();
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pascal@16025
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44 if (magic < 0x20630)
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pascal@14257
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45 init = ""; // Does not support multiple initramfs
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46 if (magic > 0) {
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pascal@16025
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47 fmt = "rw root=/dev/null%s iso=%s magic=%lu mode=%s";
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pascal@16025
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48 isoopen(rootfs);
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pascal@16025
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49 loadinitrd();
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pascal@16025
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50 if (*init) {
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pascal@16025
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51 lseek(isofd, 24L, SEEK_SET);
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pascal@16025
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52 read(isofd, &magic, 4);
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pascal@16025
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53 isofilesize = magic & 0xFFFFL;
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pascal@16025
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54 isofileofs = 0x7EE0L - isofilesize;
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pascal@16025
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55 if (isofilesize) loadinitrd();
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pascal@16025
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56 else init="";
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57 }
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pascal@16025
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58 }
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pascal@16025
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59 sprintf(cmdline, fmt, init, *iso, magic, mode);
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60 close(isofd);
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61 bootlinux(cmdline);
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pascal@13691
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62 }
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pascal@13691
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63
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pascal@13691
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64 static int stricmp(char *ref, char *s)
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65 {
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66 char c;
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67 while (*ref) {
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68 c = *s++;
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pascal@13691
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69 if (c >= 'A' && c <= 'Z') c += 'a' - 'A';
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70 c -= *ref++;
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pascal@13691
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71 if (c) return c;
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72 }
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pascal@13691
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73 return 0;
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74 }
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pascal@13691
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75
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pascal@16022
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76 static int chkstatus(int status, char *name)
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pascal@16022
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77 {
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pascal@16022
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78 if (status == -1)
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pascal@16022
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79 printf("%s not found.\n",name);
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pascal@16022
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80 return status;
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pascal@16022
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81 }
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pascal@16022
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82
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pascal@13691
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83 static char *iso;
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pascal@13691
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84 static int fakeopen(char *file)
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pascal@13691
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85 {
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pascal@16002
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86 if (file) {
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pascal@16002
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87 char *s = file;
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pascal@16002
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88 while (*s && *s != '\r' && *s != '\n') s++;
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pascal@16002
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89 *s = 0;
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pascal@16002
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90 }
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pascal@16012
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91 if (*file == '\\') {
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pascal@16012
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92 static fd = -1;
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pascal@16012
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93 if (fd >= 0) close(fd);
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pascal@16022
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94 fd = chkstatus(open(file, O_RDONLY), file);
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pascal@16022
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95 return fd;
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pascal@16012
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96 }
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pascal@13691
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97 if (iso) {
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pascal@16022
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98 chkstatus(isoreset(iso), iso);
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pascal@16022
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99 return chkstatus(isoopen(file), file);
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pascal@13691
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100 }
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pascal@13691
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101 close(isofd);
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pascal@16022
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102 isofd = chkstatus(open(file, O_RDONLY), file);
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pascal@13691
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103 if (isofd != -1) {
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104 isofileofs = 0;
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105 isofilesize = LONG_MAX;
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pascal@13691
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106 }
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pascal@13691
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107 return isofd;
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108 }
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pascal@13691
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109
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pascal@13691
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110 static char args[2048];
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pascal@13691
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111 int main(int argc, char *argv[])
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pascal@13691
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112 {
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pascal@13691
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113 char *kernel, *initrd, *cmdline, *cmdfile, *s;
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pascal@13691
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114
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pascal@13691
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115 argv[0] = progname();
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pascal@14268
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116 bootiso(argv); // iso ? parsing is /init.exe stuff !
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pascal@16022
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117 if (argc >= 2)
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pascal@14268
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118 bootiso(argv + 1);
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pascal@13691
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119
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120 chdirname(*argv);
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121 cmdfile = "tazboot.cmd";
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122 kernel = "bzImage";
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123 initrd = NULL;
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124 cmdline = "auto";
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pascal@13691
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125 if (argc > 1) {
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126 if (argv[1][0] == '@')
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127 cmdfile = argv[1] + 1;
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128 else {
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129 cmdfile = NULL;
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pascal@13691
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130 #asm
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pascal@13691
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131 push ds
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pascal@13691
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132 pop es
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pascal@13691
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133 mov si, #0x82
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134 mov di, #_args
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135 mov cx, #0x7E/2
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136 rep
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pascal@13697
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137 seg cs
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pascal@13691
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138 movsw
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pascal@13691
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139 #endasm
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pascal@13691
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140 }
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pascal@13691
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141 }
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pascal@13691
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142 if (cmdfile) {
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pascal@13691
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143 int fd;
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pascal@16025
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144 fd = chkstatus(open(cmdfile, O_RDONLY), cmdfile);
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pascal@13691
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145 if (fd != -1) {
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pascal@13691
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146 read(fd, args, sizeof(args));
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pascal@13691
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147 close(fd);
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pascal@13691
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148 for (s = args; s < args + sizeof(args) -1; s++) {
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pascal@13691
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149 if (*s == '\r') *s++ = ' ';
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pascal@13691
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150 if (*s == '\n') *s = ' ';
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pascal@13691
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151 }
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pascal@13691
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152 }
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pascal@13691
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153 }
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pascal@13691
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154 for (s = args; s < args + sizeof(args); s++) {
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pascal@13691
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155 if (*s == ' ') continue;
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pascal@13691
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156 if (stricmp("kernel=", s) == 0)
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pascal@13691
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157 kernel = s + 7;
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pascal@13691
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158 else if (stricmp("initrd=", s) == 0)
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pascal@13691
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159 initrd = s + 7;
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pascal@13691
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160 else if (stricmp("iso=", s) == 0)
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pascal@13691
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161 iso = s + 4;
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pascal@13691
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162 else {
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pascal@13691
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163 cmdline = s;
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pascal@13691
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164 break;
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pascal@13691
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165 }
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pascal@13691
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166 while (*s && *s != ' ') s++;
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pascal@13691
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167 *s = 0;
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pascal@13691
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168 }
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pascal@16002
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169 if (cmdline) {
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pascal@16002
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170 char *last;
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pascal@16002
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171 for (s = cmdline; *s && *s != '\r' && *s != '\n'; s++)
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pascal@16002
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172 if (*s != ' ') last = s;
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pascal@16002
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173 *++last = 0;
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pascal@16002
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174 }
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pascal@13691
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175 if (fakeopen(kernel) == -1)
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pascal@13691
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176 usage(argv[0]);
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pascal@13691
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177 loadkernel();
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pascal@13691
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178 if (initrd) {
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pascal@13691
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179 char *p, *q = initrd;
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pascal@13691
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180 while (1) {
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pascal@13691
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181 char c;
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pascal@13691
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182 for (p = q; *p && *p != ','; p++);
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pascal@13691
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183 c = *p;
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pascal@13691
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184 *p = 0;
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pascal@13691
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185 if (fakeopen(q) != -1)
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pascal@13691
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186 loadinitrd();
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pascal@13691
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187 if (c == 0)
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pascal@13691
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188 break;
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pascal@13691
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189 q = ++p;
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pascal@13691
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190 }
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pascal@13691
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191 }
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pascal@13691
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192 bootlinux(cmdline);
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pascal@13691
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193 }
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