FreeCalypso > hg > freecalypso-sw
annotate rvinterf/etmsync/fileio.c @ 729:acc31840d51c
mm_tim.c compiles
author | Michael Spacefalcon <msokolov@ivan.Harhan.ORG> |
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date | Sat, 04 Oct 2014 23:29:33 +0000 |
parents | ffeea2f9d149 |
children | d1333db6385f |
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1 /* |
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2 * FFS2 file descriptor I/O operations |
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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 "localtypes.h" |
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15 #include "localstruct.h" |
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16 #include "exitcodes.h" |
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17 |
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18 extern u_char rvi_msg[]; |
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19 extern int rvi_msg_len; |
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20 |
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21 fd_open(pathname, flags, fdrtn) |
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22 char *pathname; |
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23 int flags, *fdrtn; |
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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, slen; |
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27 |
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28 slen = strlen(pathname); |
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29 if (slen >= 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 dp = cmdpkt + 1; |
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34 *dp++ = ETM_FFS2; |
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35 *dp++ = TMFFS_OPEN; |
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36 *dp++ = slen + 1; |
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37 strcpy(dp, pathname); |
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38 dp += slen + 1; |
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39 *dp++ = flags; |
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40 rc = etm_pkt_exch(cmdpkt, dp - cmdpkt - 1); |
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41 if (rc) |
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42 return(rc); |
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43 if (rvi_msg[3]) { |
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44 report_ffs_err("open fd", rvi_msg[3]); |
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45 return(ERROR_TARGET); |
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46 } |
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47 if (rvi_msg_len != 6) { |
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48 printf("error: open fd response has wrong length\n"); |
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49 return(ERROR_TARGET); |
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50 } |
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51 *fdrtn = rvi_msg[4]; |
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52 return(0); |
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53 } |
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54 |
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55 fd_read(fd, databuf, rdsize, rdret) |
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56 u_char *databuf; |
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57 int fd, rdsize, *rdret; |
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58 { |
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59 u_char cmdpkt[6]; |
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60 int rc, sz; |
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61 |
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62 if (rdsize > MAX_READ_DATA) { |
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63 printf("error: # of bytes to read may not exceed %d\n", |
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64 MAX_READ_DATA); |
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65 return(ERROR_USAGE); |
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66 } |
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67 cmdpkt[1] = ETM_FFS2; |
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68 cmdpkt[2] = TMFFS_READ; |
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69 cmdpkt[3] = fd; |
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70 cmdpkt[4] = rdsize; |
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71 rc = etm_pkt_exch(cmdpkt, 4); |
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72 if (rc) |
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73 return(rc); |
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74 if (rvi_msg[3]) { |
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75 report_ffs_err("read fd", rvi_msg[3]); |
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76 return(ERROR_TARGET); |
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77 } |
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78 if (rvi_msg_len < 6) { |
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79 *rdret = 0; |
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80 return(0); |
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81 } |
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82 sz = rvi_msg[4]; |
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83 if (rvi_msg_len != sz + 6 || sz > rdsize) { |
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84 printf("error: read fd response has wrong length\n"); |
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85 return(ERROR_TARGET); |
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86 } |
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87 bcopy(rvi_msg + 5, databuf, sz); |
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88 *rdret = sz; |
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89 return(0); |
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90 } |
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91 |
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92 fd_write(fd, data, wrsize) |
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93 u_char *data; |
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94 { |
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95 u_char cmdpkt[MAX_PKT_TO_TARGET], *dp; |
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96 int rc; |
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97 |
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98 if (wrsize > MAX_PKT_TO_TARGET - 6) { |
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99 printf("error: fd write data fails to fit in the packet\n"); |
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100 return(ERROR_USAGE); |
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101 } |
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102 dp = cmdpkt + 1; |
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103 *dp++ = ETM_FFS2; |
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104 *dp++ = TMFFS_WRITE; |
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105 *dp++ = fd; |
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106 *dp++ = wrsize; |
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107 bcopy(data, dp, wrsize); |
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108 dp += wrsize; |
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109 rc = etm_pkt_exch(cmdpkt, dp - cmdpkt - 1); |
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110 if (rc) |
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111 return(rc); |
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112 if (rvi_msg[3]) { |
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113 report_ffs_err("fd write", rvi_msg[3]); |
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114 return(ERROR_TARGET); |
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115 } |
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116 if (rvi_msg_len != 6) { |
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117 printf("error: TMFFS_WRITE response has wrong length\n"); |
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118 return(ERROR_TARGET); |
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119 } |
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120 if (rvi_msg[4] != wrsize) { |
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121 printf("fd write error: # of bytes written != requested\n"); |
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122 return(ERROR_TARGET); |
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123 } |
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124 return(0); |
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125 } |
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126 |
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127 fd_close(fd) |
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128 { |
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129 u_char cmdpkt[5]; |
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130 int rc; |
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131 |
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132 cmdpkt[1] = ETM_FFS2; |
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133 cmdpkt[2] = TMFFS_CLOSE; |
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134 cmdpkt[3] = fd; |
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135 rc = etm_pkt_exch(cmdpkt, 3); |
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136 if (rc) |
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137 return(rc); |
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138 if (rvi_msg[3]) { |
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139 report_ffs_err("close fd", rvi_msg[3]); |
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140 return(ERROR_TARGET); |
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141 } |
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142 if (rvi_msg_len != 5) { |
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143 printf("error: close fd response has wrong length\n"); |
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144 return(ERROR_TARGET); |
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145 } |
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146 return(0); |
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147 } |
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148 |
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149 do_file_read(pathname, databuf, rdsize, rdret) |
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150 char *pathname; |
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151 u_char *databuf; |
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152 int rdsize, *rdret; |
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153 { |
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154 u_char cmdpkt[MAX_PKT_TO_TARGET], *dp; |
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155 int rc, slen, sz; |
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156 |
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157 slen = strlen(pathname); |
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158 if (slen >= TMFFS_STRING_SIZE) { |
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159 printf("error: pathname arg exceeds string length limit\n"); |
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160 return(ERROR_USAGE); |
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161 } |
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162 if (rdsize > MAX_READ_DATA) { |
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163 printf("error: # of bytes to read may not exceed %d\n", |
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164 MAX_READ_DATA); |
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165 return(ERROR_USAGE); |
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166 } |
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167 dp = cmdpkt + 1; |
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168 *dp++ = ETM_FFS2; |
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169 *dp++ = TMFFS_FILE_READ; |
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170 *dp++ = slen + 1; |
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171 strcpy(dp, pathname); |
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172 dp += slen + 1; |
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173 *dp++ = rdsize; |
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174 rc = etm_pkt_exch(cmdpkt, dp - cmdpkt - 1); |
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175 if (rc) |
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176 return(rc); |
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177 if (rvi_msg[3]) { |
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178 report_ffs_err("read file", rvi_msg[3]); |
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179 return(ERROR_TARGET); |
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180 } |
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181 if (rvi_msg_len < 6) { |
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182 *rdret = 0; |
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183 return(0); |
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184 } |
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185 sz = rvi_msg[4]; |
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186 if (rvi_msg_len != sz + 6 || sz > rdsize) { |
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187 printf("error: read file response has wrong length\n"); |
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188 return(ERROR_TARGET); |
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189 } |
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190 bcopy(rvi_msg + 5, databuf, sz); |
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191 *rdret = sz; |
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192 return(0); |
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193 } |
291
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194 |
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195 max_short_file_write(pathname) |
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196 char *pathname; |
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197 { |
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198 return MAX_PKT_TO_TARGET - 3 - (strlen(pathname) + 2) - 3; |
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199 } |
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200 |
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201 do_short_fwrite(pathname, data, datalen) |
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202 char *pathname; |
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203 u_char *data; |
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204 { |
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205 u_char cmdpkt[MAX_PKT_TO_TARGET], *dp; |
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206 int rc, slen; |
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207 |
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208 slen = strlen(pathname); |
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209 if (slen >= TMFFS_STRING_SIZE) { |
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210 printf("error: pathname arg exceeds string length limit\n"); |
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211 return(ERROR_USAGE); |
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212 } |
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213 if (datalen > max_short_file_write(pathname)) { |
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214 printf("error: short write data fails to fit in the packet\n"); |
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215 return(ERROR_USAGE); |
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216 } |
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217 dp = cmdpkt + 1; |
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218 *dp++ = ETM_FFS2; |
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219 *dp++ = TMFFS_FILE_WRITE; |
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220 *dp++ = slen + 1; |
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221 strcpy(dp, pathname); |
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222 dp += slen + 1; |
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223 *dp++ = datalen; |
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224 bcopy(data, dp, datalen); |
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225 dp += datalen; |
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226 *dp++ = FFS_O_CREATE | FFS_O_TRUNC; |
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227 rc = etm_pkt_exch(cmdpkt, dp - cmdpkt - 1); |
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228 if (rc) |
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229 return(rc); |
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230 if (rvi_msg_len != 5) { |
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231 printf("error: TMFFS_FILE_WRITE response has wrong length\n"); |
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232 return(ERROR_TARGET); |
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233 } |
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234 if (rvi_msg[3]) { |
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235 report_ffs_err("short file write", rvi_msg[3]); |
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236 return(ERROR_TARGET); |
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237 } |
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238 return(0); |
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239 } |