FreeCalypso > hg > freecalypso-sw
annotate rvinterf/etmsync/symlink.c @ 432:15e69d31c96f
tfc139: allow -B option just like rvtdump and rvinterf
author | Michael Spacefalcon <msokolov@ivan.Harhan.ORG> |
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date | Sat, 21 Jun 2014 23:50:25 +0000 |
parents | e0ca3ca46a06 |
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rev | line source |
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1 /* |
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2 * Commands for experimenting with FFS symlinks |
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3 */ |
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4 |
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5 #include <sys/types.h> |
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6 #include <stdio.h> |
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7 #include <stdlib.h> |
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8 #include <string.h> |
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9 #include <strings.h> |
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10 #include "etm.h" |
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11 #include "ffs.h" |
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12 #include "tmffs2.h" |
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13 #include "limits.h" |
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14 #include "ffslimits.h" |
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15 #include "localtypes.h" |
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16 #include "localstruct.h" |
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17 #include "exitcodes.h" |
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18 |
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19 extern u_char rvi_msg[]; |
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20 extern int rvi_msg_len; |
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21 |
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22 do_symlink(target, realobj) |
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23 char *target, *realobj; |
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24 { |
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25 u_char cmdpkt[MAX_PKT_TO_TARGET], *dp; |
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26 int rc, targlen, reallen; |
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27 |
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28 reallen = strlen(realobj); |
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29 if (reallen >= TMFFS_STRING_SIZE) { |
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30 printf("error: pathname arg exceeds string length limit\n"); |
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31 return(ERROR_USAGE); |
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32 } |
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33 targlen = strlen(target); |
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34 if (3 + (reallen+2) + (targlen+2) + 1 > MAX_PKT_TO_TARGET) { |
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35 printf("error: symlink request fails to fit into packet\n"); |
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36 return(ERROR_USAGE); |
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37 } |
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38 dp = cmdpkt + 1; |
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39 *dp++ = ETM_FFS2; |
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40 *dp++ = TMFFS_SYMLINK; |
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41 *dp++ = reallen + 1; |
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42 strcpy(dp, realobj); |
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43 dp += reallen + 1; |
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44 *dp++ = targlen + 1; |
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45 strcpy(dp, target); |
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46 dp += targlen + 1; |
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47 rc = etm_pkt_exch(cmdpkt, dp - cmdpkt - 1); |
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48 if (rc) |
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49 return(rc); |
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50 if (rvi_msg_len != 5) { |
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51 printf("error: TMFFS_SYMLINK response has wrong length\n"); |
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52 return(ERROR_TARGET); |
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53 } |
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54 if (rvi_msg[3]) { |
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55 report_ffs_err("symlink", rvi_msg[3]); |
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56 return(ERROR_TARGET); |
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57 } |
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58 return(0); |
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59 } |
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60 |
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61 cmd_symlink(argc, argv) |
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62 char **argv; |
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63 { |
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64 return do_symlink(argv[1], argv[2]); |
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65 } |
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66 |
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67 do_readlink(pathname, databuf, rdret) |
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68 char *pathname; |
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69 u_char *databuf; |
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70 int *rdret; |
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71 { |
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72 u_char cmdpkt[MAX_PKT_TO_TARGET], *dp; |
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73 int rc, slen, sz; |
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74 |
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75 slen = strlen(pathname); |
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76 if (slen >= TMFFS_STRING_SIZE) { |
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77 printf("error: pathname arg exceeds string length limit\n"); |
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78 return(ERROR_USAGE); |
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79 } |
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80 dp = cmdpkt + 1; |
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81 *dp++ = ETM_FFS2; |
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82 *dp++ = TMFFS_READLINK; |
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83 *dp++ = slen + 1; |
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84 strcpy(dp, pathname); |
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85 dp += slen + 1; |
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86 *dp++ = 0; /* dummy 2nd buffer */ |
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87 rc = etm_pkt_exch(cmdpkt, dp - cmdpkt - 1); |
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88 if (rc) |
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89 return(rc); |
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90 if (rvi_msg[3]) { |
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91 report_ffs_err("readlink", rvi_msg[3]); |
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92 return(ERROR_TARGET); |
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93 } |
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94 if (rvi_msg_len < 6) { |
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95 *rdret = 0; |
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96 return(0); |
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97 } |
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98 sz = rvi_msg[4]; |
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99 if (rvi_msg_len != sz + 6) { |
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100 printf("error: readlink response has wrong length\n"); |
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101 return(ERROR_TARGET); |
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102 } |
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103 bcopy(rvi_msg + 5, databuf, sz); |
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104 *rdret = sz; |
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105 return(0); |
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106 } |
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107 |
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108 cmd_readlink(argc, argv) |
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109 char **argv; |
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110 { |
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111 u_char databuf[256]; |
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112 int rc, sz, off, l; |
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113 |
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114 rc = do_readlink(argv[1], databuf, &sz); |
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115 if (rc) |
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116 return(rc); |
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117 printf("%d bytes read\n", sz); |
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118 for (off = 0; off < sz; off += 16) { |
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119 l = sz - off; |
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120 if (l > 16) |
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121 l = 16; |
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122 hexdump_line(off, databuf + off, l); |
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123 } |
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124 return(0); |
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125 } |
304
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126 |
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127 do_readlink_sancheck(pathname, databuf) |
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128 char *pathname; |
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129 u_char *databuf; |
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130 { |
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131 int rc, sz; |
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132 |
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133 rc = do_readlink(pathname, databuf, &sz); |
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134 if (rc) |
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135 return(rc); |
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136 if (sz < 2 || databuf[sz-1]) { |
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137 printf("error: readlink on %s returned garbage\n", pathname); |
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138 return(ERROR_TARGET); |
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139 } |
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140 return(0); |
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141 } |