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| <td width="10%" class="headerItem">Current view:</td> |
| <td width="10%" class="headerValue"><a href="../index.html">top level</a> - <a href="index.html">libflash</a> - file.c<span style="font-size: 80%;"> (source / <a href="file.c.func-c.html">functions</a>)</span></td> |
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| <td width="5%" class="headerCovTableHead">Coverage</td> |
| <td width="5%" class="headerCovTableHead" title="Covered + Uncovered code">Total</td> |
| <td width="5%" class="headerCovTableHead" title="Exercised code only">Hit</td> |
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| <td class="headerItem">Test:</td> |
| <td class="headerValue">skiboot.info</td> |
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| <td class="headerItem">Lines:</td> |
| <td class="headerCovTableEntryLo">58.7 %</td> |
| <td class="headerCovTableEntry">184</td> |
| <td class="headerCovTableEntry">108</td> |
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| <td class="headerItem">Test Date:</td> |
| <td class="headerValue">2025-06-27 16:54:26</td> |
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| <td class="headerItem">Functions:</td> |
| <td class="headerCovTableEntryLo">69.2 %</td> |
| <td class="headerCovTableEntry">13</td> |
| <td class="headerCovTableEntry">9</td> |
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| <td class="headerItem">Branches:</td> |
| <td class="headerCovTableEntryHi">-</td> |
| <td class="headerCovTableEntry">0</td> |
| <td class="headerCovTableEntry">0</td> |
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| <pre class="sourceHeading"> Branch data Line data Source code</pre> |
| <pre class="source"> |
| <span id="L1"><span class="lineNum"> 1</span> : : // SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later</span> |
| <span id="L2"><span class="lineNum"> 2</span> : : /* Copyright 2013-2019 IBM Corp. */</span> |
| <span id="L3"><span class="lineNum"> 3</span> : : </span> |
| <span id="L4"><span class="lineNum"> 4</span> : : #define _GNU_SOURCE</span> |
| <span id="L5"><span class="lineNum"> 5</span> : : #include <errno.h></span> |
| <span id="L6"><span class="lineNum"> 6</span> : : #include <inttypes.h></span> |
| <span id="L7"><span class="lineNum"> 7</span> : : #include <stdio.h></span> |
| <span id="L8"><span class="lineNum"> 8</span> : : #include <stdlib.h></span> |
| <span id="L9"><span class="lineNum"> 9</span> : : #include <string.h></span> |
| <span id="L10"><span class="lineNum"> 10</span> : : #include <sys/ioctl.h></span> |
| <span id="L11"><span class="lineNum"> 11</span> : : #include <sys/types.h></span> |
| <span id="L12"><span class="lineNum"> 12</span> : : #include <sys/stat.h></span> |
| <span id="L13"><span class="lineNum"> 13</span> : : #include <fcntl.h></span> |
| <span id="L14"><span class="lineNum"> 14</span> : : #include <unistd.h></span> |
| <span id="L15"><span class="lineNum"> 15</span> : : #include <limits.h></span> |
| <span id="L16"><span class="lineNum"> 16</span> : : </span> |
| <span id="L17"><span class="lineNum"> 17</span> : : #include <ccan/container_of/container_of.h></span> |
| <span id="L18"><span class="lineNum"> 18</span> : : </span> |
| <span id="L19"><span class="lineNum"> 19</span> : : #include <mtd/mtd-abi.h></span> |
| <span id="L20"><span class="lineNum"> 20</span> : : </span> |
| <span id="L21"><span class="lineNum"> 21</span> : : #include "libflash.h"</span> |
| <span id="L22"><span class="lineNum"> 22</span> : : #include "libflash/file.h"</span> |
| <span id="L23"><span class="lineNum"> 23</span> : : #include "blocklevel.h"</span> |
| <span id="L24"><span class="lineNum"> 24</span> : : </span> |
| <span id="L25"><span class="lineNum"> 25</span> : : struct file_data {</span> |
| <span id="L26"><span class="lineNum"> 26</span> : : int fd;</span> |
| <span id="L27"><span class="lineNum"> 27</span> : : char *name;</span> |
| <span id="L28"><span class="lineNum"> 28</span> : : char *path;</span> |
| <span id="L29"><span class="lineNum"> 29</span> : : struct blocklevel_device bl;</span> |
| <span id="L30"><span class="lineNum"> 30</span> : : };</span> |
| <span id="L31"><span class="lineNum"> 31</span> : : </span> |
| <span id="L32"><span class="lineNum"> 32</span> :<span class="tlaUNC tlaBgUNC"> 0 : static int file_release(struct blocklevel_device *bl)</span></span> |
| <span id="L33"><span class="lineNum"> 33</span> : : {</span> |
| <span id="L34"><span class="lineNum"> 34</span> :<span class="tlaUNC"> 0 : struct file_data *file_data = container_of(bl, struct file_data, bl);</span></span> |
| <span id="L35"><span class="lineNum"> 35</span> :<span class="tlaUNC"> 0 : close(file_data->fd);</span></span> |
| <span id="L36"><span class="lineNum"> 36</span> :<span class="tlaUNC"> 0 : file_data->fd = -1;</span></span> |
| <span id="L37"><span class="lineNum"> 37</span> :<span class="tlaUNC"> 0 : return 0;</span></span> |
| <span id="L38"><span class="lineNum"> 38</span> : : }</span> |
| <span id="L39"><span class="lineNum"> 39</span> : : </span> |
| <span id="L40"><span class="lineNum"> 40</span> :<span class="tlaUNC"> 0 : static int file_reacquire(struct blocklevel_device *bl)</span></span> |
| <span id="L41"><span class="lineNum"> 41</span> : : {</span> |
| <span id="L42"><span class="lineNum"> 42</span> :<span class="tlaUNC"> 0 : struct file_data *file_data = container_of(bl, struct file_data, bl);</span></span> |
| <span id="L43"><span class="lineNum"> 43</span> :<span class="tlaUNC"> 0 : int fd;</span></span> |
| <span id="L44"><span class="lineNum"> 44</span> : : </span> |
| <span id="L45"><span class="lineNum"> 45</span> :<span class="tlaUNC"> 0 : fd = open(file_data->path, O_RDWR);</span></span> |
| <span id="L46"><span class="lineNum"> 46</span> :<span class="tlaUNC"> 0 : if (fd == -1)</span></span> |
| <span id="L47"><span class="lineNum"> 47</span> : : return FLASH_ERR_PARM_ERROR;</span> |
| <span id="L48"><span class="lineNum"> 48</span> :<span class="tlaUNC"> 0 : file_data->fd = fd;</span></span> |
| <span id="L49"><span class="lineNum"> 49</span> :<span class="tlaUNC"> 0 : return 0;</span></span> |
| <span id="L50"><span class="lineNum"> 50</span> : : }</span> |
| <span id="L51"><span class="lineNum"> 51</span> : : </span> |
| <span id="L52"><span class="lineNum"> 52</span> :<span class="tlaGNC tlaBgGNC"> 107 : static int file_read(struct blocklevel_device *bl, uint64_t pos, void *buf, uint64_t len)</span></span> |
| <span id="L53"><span class="lineNum"> 53</span> : : {</span> |
| <span id="L54"><span class="lineNum"> 54</span> :<span class="tlaGNC"> 107 : struct file_data *file_data = container_of(bl, struct file_data, bl);</span></span> |
| <span id="L55"><span class="lineNum"> 55</span> :<span class="tlaGNC"> 107 : int rc, count = 0;</span></span> |
| <span id="L56"><span class="lineNum"> 56</span> : : </span> |
| <span id="L57"><span class="lineNum"> 57</span> :<span class="tlaGNC"> 107 : rc = lseek(file_data->fd, pos, SEEK_SET);</span></span> |
| <span id="L58"><span class="lineNum"> 58</span> : : /* errno should remain set */</span> |
| <span id="L59"><span class="lineNum"> 59</span> :<span class="tlaGNC"> 107 : if (rc != pos)</span></span> |
| <span id="L60"><span class="lineNum"> 60</span> : : return FLASH_ERR_PARM_ERROR;</span> |
| <span id="L61"><span class="lineNum"> 61</span> : : </span> |
| <span id="L62"><span class="lineNum"> 62</span> :<span class="tlaGNC"> 214 : while (count < len) {</span></span> |
| <span id="L63"><span class="lineNum"> 63</span> :<span class="tlaGNC"> 107 : rc = read(file_data->fd, buf, len - count);</span></span> |
| <span id="L64"><span class="lineNum"> 64</span> : : /* errno should remain set */</span> |
| <span id="L65"><span class="lineNum"> 65</span> :<span class="tlaGNC"> 107 : if (rc == -1 || rc == 0)</span></span> |
| <span id="L66"><span class="lineNum"> 66</span> : : return FLASH_ERR_BAD_READ;</span> |
| <span id="L67"><span class="lineNum"> 67</span> : : </span> |
| <span id="L68"><span class="lineNum"> 68</span> :<span class="tlaGNC"> 107 : buf += rc;</span></span> |
| <span id="L69"><span class="lineNum"> 69</span> :<span class="tlaGNC"> 107 : count += rc;</span></span> |
| <span id="L70"><span class="lineNum"> 70</span> : : }</span> |
| <span id="L71"><span class="lineNum"> 71</span> : : </span> |
| <span id="L72"><span class="lineNum"> 72</span> : : return 0;</span> |
| <span id="L73"><span class="lineNum"> 73</span> : : }</span> |
| <span id="L74"><span class="lineNum"> 74</span> : : </span> |
| <span id="L75"><span class="lineNum"> 75</span> :<span class="tlaGNC"> 3353 : static int file_write(struct blocklevel_device *bl, uint64_t dst, const void *src,</span></span> |
| <span id="L76"><span class="lineNum"> 76</span> : : uint64_t len)</span> |
| <span id="L77"><span class="lineNum"> 77</span> : : {</span> |
| <span id="L78"><span class="lineNum"> 78</span> :<span class="tlaGNC"> 3353 : struct file_data *file_data = container_of(bl, struct file_data, bl);</span></span> |
| <span id="L79"><span class="lineNum"> 79</span> :<span class="tlaGNC"> 3353 : int rc, count = 0;</span></span> |
| <span id="L80"><span class="lineNum"> 80</span> : : </span> |
| <span id="L81"><span class="lineNum"> 81</span> :<span class="tlaGNC"> 3353 : rc = lseek(file_data->fd, dst, SEEK_SET);</span></span> |
| <span id="L82"><span class="lineNum"> 82</span> : : /* errno should remain set */</span> |
| <span id="L83"><span class="lineNum"> 83</span> :<span class="tlaGNC"> 3353 : if (rc != dst)</span></span> |
| <span id="L84"><span class="lineNum"> 84</span> : : return FLASH_ERR_PARM_ERROR;</span> |
| <span id="L85"><span class="lineNum"> 85</span> : : </span> |
| <span id="L86"><span class="lineNum"> 86</span> :<span class="tlaGNC"> 6706 : while (count < len) {</span></span> |
| <span id="L87"><span class="lineNum"> 87</span> :<span class="tlaGNC"> 3353 : rc = write(file_data->fd, src, len - count);</span></span> |
| <span id="L88"><span class="lineNum"> 88</span> : : /* errno should remain set */</span> |
| <span id="L89"><span class="lineNum"> 89</span> :<span class="tlaGNC"> 3353 : if (rc == -1)</span></span> |
| <span id="L90"><span class="lineNum"> 90</span> : : return FLASH_ERR_VERIFY_FAILURE;</span> |
| <span id="L91"><span class="lineNum"> 91</span> : : </span> |
| <span id="L92"><span class="lineNum"> 92</span> :<span class="tlaGNC"> 3353 : src += rc;</span></span> |
| <span id="L93"><span class="lineNum"> 93</span> :<span class="tlaGNC"> 3353 : count += rc;</span></span> |
| <span id="L94"><span class="lineNum"> 94</span> : : }</span> |
| <span id="L95"><span class="lineNum"> 95</span> : : </span> |
| <span id="L96"><span class="lineNum"> 96</span> : : return 0;</span> |
| <span id="L97"><span class="lineNum"> 97</span> : : }</span> |
| <span id="L98"><span class="lineNum"> 98</span> : : </span> |
| <span id="L99"><span class="lineNum"> 99</span> : : /*</span> |
| <span id="L100"><span class="lineNum"> 100</span> : : * Due to to the fact these interfaces are ultimately supposed to deal with</span> |
| <span id="L101"><span class="lineNum"> 101</span> : : * flash, an erase function must be implemented even when the flash images</span> |
| <span id="L102"><span class="lineNum"> 102</span> : : * are backed by regular files.</span> |
| <span id="L103"><span class="lineNum"> 103</span> : : * Also, erasing flash leaves all the bits set to 1. This may be expected</span> |
| <span id="L104"><span class="lineNum"> 104</span> : : * by higher level functions so this function should also emulate that</span> |
| <span id="L105"><span class="lineNum"> 105</span> : : */</span> |
| <span id="L106"><span class="lineNum"> 106</span> :<span class="tlaGNC"> 3330 : static int file_erase(struct blocklevel_device *bl, uint64_t dst, uint64_t len)</span></span> |
| <span id="L107"><span class="lineNum"> 107</span> : : {</span> |
| <span id="L108"><span class="lineNum"> 108</span> :<span class="tlaGNC"> 3330 : static char buf[4096];</span></span> |
| <span id="L109"><span class="lineNum"> 109</span> :<span class="tlaGNC"> 3330 : int i = 0;</span></span> |
| <span id="L110"><span class="lineNum"> 110</span> :<span class="tlaGNC"> 3330 : int rc;</span></span> |
| <span id="L111"><span class="lineNum"> 111</span> : : </span> |
| <span id="L112"><span class="lineNum"> 112</span> :<span class="tlaGNC"> 3330 : memset(buf, ~0, sizeof(buf));</span></span> |
| <span id="L113"><span class="lineNum"> 113</span> : : </span> |
| <span id="L114"><span class="lineNum"> 114</span> :<span class="tlaGNC"> 6668 : while (len - i > 0) {</span></span> |
| <span id="L115"><span class="lineNum"> 115</span> :<span class="tlaGNC"> 3338 : rc = file_write(bl, dst + i, buf, len - i > sizeof(buf) ? sizeof(buf) : len - i);</span></span> |
| <span id="L116"><span class="lineNum"> 116</span> :<span class="tlaGNC"> 3338 : if (rc)</span></span> |
| <span id="L117"><span class="lineNum"> 117</span> :<span class="tlaUNC tlaBgUNC"> 0 : return rc;</span></span> |
| <span id="L118"><span class="lineNum"> 118</span> :<span class="tlaGNC tlaBgGNC"> 3338 : i += (len - i > sizeof(buf)) ? sizeof(buf) : len - i;</span></span> |
| <span id="L119"><span class="lineNum"> 119</span> : : }</span> |
| <span id="L120"><span class="lineNum"> 120</span> : : </span> |
| <span id="L121"><span class="lineNum"> 121</span> : : return 0;</span> |
| <span id="L122"><span class="lineNum"> 122</span> : : }</span> |
| <span id="L123"><span class="lineNum"> 123</span> : : </span> |
| <span id="L124"><span class="lineNum"> 124</span> :<span class="tlaUNC tlaBgUNC"> 0 : static int mtd_erase(struct blocklevel_device *bl, uint64_t dst, uint64_t len)</span></span> |
| <span id="L125"><span class="lineNum"> 125</span> : : {</span> |
| <span id="L126"><span class="lineNum"> 126</span> :<span class="tlaUNC"> 0 : struct file_data *file_data = container_of(bl, struct file_data, bl);</span></span> |
| <span id="L127"><span class="lineNum"> 127</span> :<span class="tlaUNC"> 0 : int err;</span></span> |
| <span id="L128"><span class="lineNum"> 128</span> : : </span> |
| <span id="L129"><span class="lineNum"> 129</span> :<span class="tlaUNC"> 0 : FL_DBG("%s: dst: 0x%" PRIx64 ", len: 0x%" PRIx64 "\n", __func__, dst, len);</span></span> |
| <span id="L130"><span class="lineNum"> 130</span> : : </span> |
| <span id="L131"><span class="lineNum"> 131</span> : : /*</span> |
| <span id="L132"><span class="lineNum"> 132</span> : : * Some kernels that pflash supports do not know about the 64bit</span> |
| <span id="L133"><span class="lineNum"> 133</span> : : * version of the ioctl() therefore we'll just use the 32bit (which</span> |
| <span id="L134"><span class="lineNum"> 134</span> : : * should always be supported...) unless we MUST use the 64bit and</span> |
| <span id="L135"><span class="lineNum"> 135</span> : : * then lets just hope the kernel knows how to deal with it. If it</span> |
| <span id="L136"><span class="lineNum"> 136</span> : : * is unsupported the ioctl() will fail and we'll report that -</span> |
| <span id="L137"><span class="lineNum"> 137</span> : : * there is no other option.</span> |
| <span id="L138"><span class="lineNum"> 138</span> : : *</span> |
| <span id="L139"><span class="lineNum"> 139</span> : : * Furthermore, even very recent MTD layers and drivers aren't</span> |
| <span id="L140"><span class="lineNum"> 140</span> : : * particularly good at not blocking in the kernel. This creates</span> |
| <span id="L141"><span class="lineNum"> 141</span> : : * unexpected behaviour in userspace tools using these functions.</span> |
| <span id="L142"><span class="lineNum"> 142</span> : : * In the absence of significant work inside the kernel, we'll just</span> |
| <span id="L143"><span class="lineNum"> 143</span> : : * split stuff up here for convenience.</span> |
| <span id="L144"><span class="lineNum"> 144</span> : : * We can assume everything is aligned here.</span> |
| <span id="L145"><span class="lineNum"> 145</span> : : */</span> |
| <span id="L146"><span class="lineNum"> 146</span> :<span class="tlaUNC"> 0 : while (len) {</span></span> |
| <span id="L147"><span class="lineNum"> 147</span> :<span class="tlaUNC"> 0 : if (dst > UINT_MAX || len > UINT_MAX) {</span></span> |
| <span id="L148"><span class="lineNum"> 148</span> :<span class="tlaUNC"> 0 : struct erase_info_user64 erase_info = {</span></span> |
| <span id="L149"><span class="lineNum"> 149</span> : : .start = dst,</span> |
| <span id="L150"><span class="lineNum"> 150</span> :<span class="tlaUNC"> 0 : .length = file_data->bl.erase_mask + 1</span></span> |
| <span id="L151"><span class="lineNum"> 151</span> : : };</span> |
| <span id="L152"><span class="lineNum"> 152</span> : : </span> |
| <span id="L153"><span class="lineNum"> 153</span> :<span class="tlaUNC"> 0 : if (ioctl(file_data->fd, MEMERASE64, &erase_info) == -1) {</span></span> |
| <span id="L154"><span class="lineNum"> 154</span> :<span class="tlaUNC"> 0 : err = errno;</span></span> |
| <span id="L155"><span class="lineNum"> 155</span> :<span class="tlaUNC"> 0 : if (err == 25) /* Kernel doesn't do 64bit MTD erase ioctl() */</span></span> |
| <span id="L156"><span class="lineNum"> 156</span> :<span class="tlaUNC"> 0 : FL_DBG("Attempted a 64bit erase on a kernel which doesn't support it\n");</span></span> |
| <span id="L157"><span class="lineNum"> 157</span> :<span class="tlaUNC"> 0 : FL_ERR("%s: IOCTL to kernel failed! %s\n", __func__, strerror(err));</span></span> |
| <span id="L158"><span class="lineNum"> 158</span> :<span class="tlaUNC"> 0 : errno = err;</span></span> |
| <span id="L159"><span class="lineNum"> 159</span> :<span class="tlaUNC"> 0 : return FLASH_ERR_PARM_ERROR;</span></span> |
| <span id="L160"><span class="lineNum"> 160</span> : : }</span> |
| <span id="L161"><span class="lineNum"> 161</span> : : } else {</span> |
| <span id="L162"><span class="lineNum"> 162</span> :<span class="tlaUNC"> 0 : struct erase_info_user erase_info = {</span></span> |
| <span id="L163"><span class="lineNum"> 163</span> : : .start = dst,</span> |
| <span id="L164"><span class="lineNum"> 164</span> :<span class="tlaUNC"> 0 : .length = file_data->bl.erase_mask + 1</span></span> |
| <span id="L165"><span class="lineNum"> 165</span> : : };</span> |
| <span id="L166"><span class="lineNum"> 166</span> :<span class="tlaUNC"> 0 : if (ioctl(file_data->fd, MEMERASE, &erase_info) == -1) {</span></span> |
| <span id="L167"><span class="lineNum"> 167</span> :<span class="tlaUNC"> 0 : err = errno;</span></span> |
| <span id="L168"><span class="lineNum"> 168</span> :<span class="tlaUNC"> 0 : FL_ERR("%s: IOCTL to kernel failed! %s\n", __func__, strerror(err));</span></span> |
| <span id="L169"><span class="lineNum"> 169</span> :<span class="tlaUNC"> 0 : errno = err;</span></span> |
| <span id="L170"><span class="lineNum"> 170</span> :<span class="tlaUNC"> 0 : return FLASH_ERR_PARM_ERROR;</span></span> |
| <span id="L171"><span class="lineNum"> 171</span> : : }</span> |
| <span id="L172"><span class="lineNum"> 172</span> : : }</span> |
| <span id="L173"><span class="lineNum"> 173</span> :<span class="tlaUNC"> 0 : dst += file_data->bl.erase_mask + 1;</span></span> |
| <span id="L174"><span class="lineNum"> 174</span> :<span class="tlaUNC"> 0 : len -= file_data->bl.erase_mask + 1;</span></span> |
| <span id="L175"><span class="lineNum"> 175</span> : : }</span> |
| <span id="L176"><span class="lineNum"> 176</span> : : return 0;</span> |
| <span id="L177"><span class="lineNum"> 177</span> : : }</span> |
| <span id="L178"><span class="lineNum"> 178</span> : : </span> |
| <span id="L179"><span class="lineNum"> 179</span> :<span class="tlaGNC tlaBgGNC"> 11 : static int get_info_name(struct file_data *file_data, char **name)</span></span> |
| <span id="L180"><span class="lineNum"> 180</span> : : {</span> |
| <span id="L181"><span class="lineNum"> 181</span> :<span class="tlaGNC"> 11 : char *path, *lpath;</span></span> |
| <span id="L182"><span class="lineNum"> 182</span> :<span class="tlaGNC"> 11 : int len;</span></span> |
| <span id="L183"><span class="lineNum"> 183</span> :<span class="tlaGNC"> 11 : struct stat st;</span></span> |
| <span id="L184"><span class="lineNum"> 184</span> : : </span> |
| <span id="L185"><span class="lineNum"> 185</span> :<span class="tlaGNC"> 11 : if (asprintf(&path, "/proc/self/fd/%d", file_data->fd) == -1)</span></span> |
| <span id="L186"><span class="lineNum"> 186</span> : : return FLASH_ERR_MALLOC_FAILED;</span> |
| <span id="L187"><span class="lineNum"> 187</span> : : </span> |
| <span id="L188"><span class="lineNum"> 188</span> :<span class="tlaGNC"> 11 : if (lstat(path, &st)) {</span></span> |
| <span id="L189"><span class="lineNum"> 189</span> :<span class="tlaUNC tlaBgUNC"> 0 : free(path);</span></span> |
| <span id="L190"><span class="lineNum"> 190</span> :<span class="tlaUNC"> 0 : return FLASH_ERR_PARM_ERROR;</span></span> |
| <span id="L191"><span class="lineNum"> 191</span> : : }</span> |
| <span id="L192"><span class="lineNum"> 192</span> : : </span> |
| <span id="L193"><span class="lineNum"> 193</span> :<span class="tlaGNC tlaBgGNC"> 11 : lpath = malloc(st.st_size + 1);</span></span> |
| <span id="L194"><span class="lineNum"> 194</span> :<span class="tlaGNC"> 11 : if (!lpath) {</span></span> |
| <span id="L195"><span class="lineNum"> 195</span> :<span class="tlaUNC tlaBgUNC"> 0 : free(path);</span></span> |
| <span id="L196"><span class="lineNum"> 196</span> :<span class="tlaUNC"> 0 : return FLASH_ERR_MALLOC_FAILED;</span></span> |
| <span id="L197"><span class="lineNum"> 197</span> : : }</span> |
| <span id="L198"><span class="lineNum"> 198</span> : : </span> |
| <span id="L199"><span class="lineNum"> 199</span> :<span class="tlaGNC tlaBgGNC"> 11 : len = readlink(path, lpath, st.st_size +1);</span></span> |
| <span id="L200"><span class="lineNum"> 200</span> :<span class="tlaGNC"> 11 : if (len == -1) {</span></span> |
| <span id="L201"><span class="lineNum"> 201</span> :<span class="tlaUNC tlaBgUNC"> 0 : free(path);</span></span> |
| <span id="L202"><span class="lineNum"> 202</span> :<span class="tlaUNC"> 0 : free(lpath);</span></span> |
| <span id="L203"><span class="lineNum"> 203</span> :<span class="tlaUNC"> 0 : return FLASH_ERR_PARM_ERROR;</span></span> |
| <span id="L204"><span class="lineNum"> 204</span> : : }</span> |
| <span id="L205"><span class="lineNum"> 205</span> :<span class="tlaGNC tlaBgGNC"> 11 : lpath[len] = '\0';</span></span> |
| <span id="L206"><span class="lineNum"> 206</span> : : </span> |
| <span id="L207"><span class="lineNum"> 207</span> :<span class="tlaGNC"> 11 : *name = lpath;</span></span> |
| <span id="L208"><span class="lineNum"> 208</span> : : </span> |
| <span id="L209"><span class="lineNum"> 209</span> :<span class="tlaGNC"> 11 : free(path);</span></span> |
| <span id="L210"><span class="lineNum"> 210</span> :<span class="tlaGNC"> 11 : return 0;</span></span> |
| <span id="L211"><span class="lineNum"> 211</span> : : }</span> |
| <span id="L212"><span class="lineNum"> 212</span> : : </span> |
| <span id="L213"><span class="lineNum"> 213</span> : : </span> |
| <span id="L214"><span class="lineNum"> 214</span> :<span class="tlaUNC tlaBgUNC"> 0 : static int mtd_get_info(struct blocklevel_device *bl, const char **name,</span></span> |
| <span id="L215"><span class="lineNum"> 215</span> : : uint64_t *total_size, uint32_t *erase_granule)</span> |
| <span id="L216"><span class="lineNum"> 216</span> : : {</span> |
| <span id="L217"><span class="lineNum"> 217</span> :<span class="tlaUNC"> 0 : struct file_data *file_data = container_of(bl, struct file_data, bl);</span></span> |
| <span id="L218"><span class="lineNum"> 218</span> :<span class="tlaUNC"> 0 : struct mtd_info_user mtd_info;</span></span> |
| <span id="L219"><span class="lineNum"> 219</span> :<span class="tlaUNC"> 0 : int rc;</span></span> |
| <span id="L220"><span class="lineNum"> 220</span> : : </span> |
| <span id="L221"><span class="lineNum"> 221</span> :<span class="tlaUNC"> 0 : rc = ioctl(file_data->fd, MEMGETINFO, &mtd_info);</span></span> |
| <span id="L222"><span class="lineNum"> 222</span> :<span class="tlaUNC"> 0 : if (rc == -1)</span></span> |
| <span id="L223"><span class="lineNum"> 223</span> : : return FLASH_ERR_BAD_READ;</span> |
| <span id="L224"><span class="lineNum"> 224</span> : : </span> |
| <span id="L225"><span class="lineNum"> 225</span> :<span class="tlaUNC"> 0 : if (total_size)</span></span> |
| <span id="L226"><span class="lineNum"> 226</span> :<span class="tlaUNC"> 0 : *total_size = mtd_info.size;</span></span> |
| <span id="L227"><span class="lineNum"> 227</span> : : </span> |
| <span id="L228"><span class="lineNum"> 228</span> :<span class="tlaUNC"> 0 : if (erase_granule)</span></span> |
| <span id="L229"><span class="lineNum"> 229</span> :<span class="tlaUNC"> 0 : *erase_granule = mtd_info.erasesize;</span></span> |
| <span id="L230"><span class="lineNum"> 230</span> : : </span> |
| <span id="L231"><span class="lineNum"> 231</span> :<span class="tlaUNC"> 0 : if (name) {</span></span> |
| <span id="L232"><span class="lineNum"> 232</span> :<span class="tlaUNC"> 0 : rc = get_info_name(file_data, &(file_data->name));</span></span> |
| <span id="L233"><span class="lineNum"> 233</span> :<span class="tlaUNC"> 0 : if (rc)</span></span> |
| <span id="L234"><span class="lineNum"> 234</span> : : return rc;</span> |
| <span id="L235"><span class="lineNum"> 235</span> :<span class="tlaUNC"> 0 : *name = file_data->name;</span></span> |
| <span id="L236"><span class="lineNum"> 236</span> : : }</span> |
| <span id="L237"><span class="lineNum"> 237</span> : : </span> |
| <span id="L238"><span class="lineNum"> 238</span> : : return 0;</span> |
| <span id="L239"><span class="lineNum"> 239</span> : : }</span> |
| <span id="L240"><span class="lineNum"> 240</span> : : </span> |
| <span id="L241"><span class="lineNum"> 241</span> :<span class="tlaGNC tlaBgGNC"> 43 : static int file_get_info(struct blocklevel_device *bl, const char **name,</span></span> |
| <span id="L242"><span class="lineNum"> 242</span> : : uint64_t *total_size, uint32_t *erase_granule)</span> |
| <span id="L243"><span class="lineNum"> 243</span> : : {</span> |
| <span id="L244"><span class="lineNum"> 244</span> :<span class="tlaGNC"> 43 : struct file_data *file_data = container_of(bl, struct file_data, bl);</span></span> |
| <span id="L245"><span class="lineNum"> 245</span> :<span class="tlaGNC"> 43 : struct stat st;</span></span> |
| <span id="L246"><span class="lineNum"> 246</span> :<span class="tlaGNC"> 43 : int rc;</span></span> |
| <span id="L247"><span class="lineNum"> 247</span> : : </span> |
| <span id="L248"><span class="lineNum"> 248</span> :<span class="tlaGNC"> 43 : if (fstat(file_data->fd, &st))</span></span> |
| <span id="L249"><span class="lineNum"> 249</span> : : return FLASH_ERR_PARM_ERROR;</span> |
| <span id="L250"><span class="lineNum"> 250</span> : : </span> |
| <span id="L251"><span class="lineNum"> 251</span> :<span class="tlaGNC"> 43 : if (total_size)</span></span> |
| <span id="L252"><span class="lineNum"> 252</span> :<span class="tlaGNC"> 43 : *total_size = st.st_size;</span></span> |
| <span id="L253"><span class="lineNum"> 253</span> : : </span> |
| <span id="L254"><span class="lineNum"> 254</span> :<span class="tlaGNC"> 43 : if (erase_granule)</span></span> |
| <span id="L255"><span class="lineNum"> 255</span> :<span class="tlaGNC"> 11 : *erase_granule = 1;</span></span> |
| <span id="L256"><span class="lineNum"> 256</span> : : </span> |
| <span id="L257"><span class="lineNum"> 257</span> :<span class="tlaGNC"> 43 : if (name) {</span></span> |
| <span id="L258"><span class="lineNum"> 258</span> :<span class="tlaGNC"> 11 : rc = get_info_name(file_data, &(file_data->name));</span></span> |
| <span id="L259"><span class="lineNum"> 259</span> :<span class="tlaGNC"> 11 : if (rc)</span></span> |
| <span id="L260"><span class="lineNum"> 260</span> : : return rc;</span> |
| <span id="L261"><span class="lineNum"> 261</span> :<span class="tlaGNC"> 11 : *name = file_data->name;</span></span> |
| <span id="L262"><span class="lineNum"> 262</span> : : }</span> |
| <span id="L263"><span class="lineNum"> 263</span> : : </span> |
| <span id="L264"><span class="lineNum"> 264</span> : : return 0;</span> |
| <span id="L265"><span class="lineNum"> 265</span> : : }</span> |
| <span id="L266"><span class="lineNum"> 266</span> : : </span> |
| <span id="L267"><span class="lineNum"> 267</span> :<span class="tlaGNC"> 34 : int file_init(int fd, struct blocklevel_device **bl)</span></span> |
| <span id="L268"><span class="lineNum"> 268</span> : : {</span> |
| <span id="L269"><span class="lineNum"> 269</span> :<span class="tlaGNC"> 34 : struct file_data *file_data;</span></span> |
| <span id="L270"><span class="lineNum"> 270</span> :<span class="tlaGNC"> 34 : struct stat sbuf;</span></span> |
| <span id="L271"><span class="lineNum"> 271</span> : : </span> |
| <span id="L272"><span class="lineNum"> 272</span> :<span class="tlaGNC"> 34 : if (!bl)</span></span> |
| <span id="L273"><span class="lineNum"> 273</span> : : return FLASH_ERR_PARM_ERROR;</span> |
| <span id="L274"><span class="lineNum"> 274</span> : : </span> |
| <span id="L275"><span class="lineNum"> 275</span> :<span class="tlaGNC"> 34 : *bl = NULL;</span></span> |
| <span id="L276"><span class="lineNum"> 276</span> : : </span> |
| <span id="L277"><span class="lineNum"> 277</span> :<span class="tlaGNC"> 34 : file_data = calloc(1, sizeof(struct file_data));</span></span> |
| <span id="L278"><span class="lineNum"> 278</span> :<span class="tlaGNC"> 34 : if (!file_data)</span></span> |
| <span id="L279"><span class="lineNum"> 279</span> : : return FLASH_ERR_MALLOC_FAILED;</span> |
| <span id="L280"><span class="lineNum"> 280</span> : : </span> |
| <span id="L281"><span class="lineNum"> 281</span> :<span class="tlaGNC"> 34 : file_data->fd = fd;</span></span> |
| <span id="L282"><span class="lineNum"> 282</span> :<span class="tlaGNC"> 34 : file_data->bl.reacquire = &file_reacquire;</span></span> |
| <span id="L283"><span class="lineNum"> 283</span> :<span class="tlaGNC"> 34 : file_data->bl.release = &file_release;</span></span> |
| <span id="L284"><span class="lineNum"> 284</span> :<span class="tlaGNC"> 34 : file_data->bl.read = &file_read;</span></span> |
| <span id="L285"><span class="lineNum"> 285</span> :<span class="tlaGNC"> 34 : file_data->bl.write = &file_write;</span></span> |
| <span id="L286"><span class="lineNum"> 286</span> :<span class="tlaGNC"> 34 : file_data->bl.erase = &file_erase;</span></span> |
| <span id="L287"><span class="lineNum"> 287</span> :<span class="tlaGNC"> 34 : file_data->bl.get_info = &file_get_info;</span></span> |
| <span id="L288"><span class="lineNum"> 288</span> :<span class="tlaGNC"> 34 : file_data->bl.erase_mask = 0;</span></span> |
| <span id="L289"><span class="lineNum"> 289</span> : : </span> |
| <span id="L290"><span class="lineNum"> 290</span> : : /*</span> |
| <span id="L291"><span class="lineNum"> 291</span> : : * If the blocklevel_device is only inited with file_init() then keep</span> |
| <span id="L292"><span class="lineNum"> 292</span> : : * alive is assumed, as fd will change otherwise and this may break</span> |
| <span id="L293"><span class="lineNum"> 293</span> : : * callers assumptions.</span> |
| <span id="L294"><span class="lineNum"> 294</span> : : */</span> |
| <span id="L295"><span class="lineNum"> 295</span> :<span class="tlaGNC"> 34 : file_data->bl.keep_alive = 1;</span></span> |
| <span id="L296"><span class="lineNum"> 296</span> : : </span> |
| <span id="L297"><span class="lineNum"> 297</span> : : /*</span> |
| <span id="L298"><span class="lineNum"> 298</span> : : * Unfortunately not all file descriptors are created equal...</span> |
| <span id="L299"><span class="lineNum"> 299</span> : : * Here we check to see if the file descriptor is to an MTD device, in</span> |
| <span id="L300"><span class="lineNum"> 300</span> : : * which case we have to erase and get the size of it differently.</span> |
| <span id="L301"><span class="lineNum"> 301</span> : : */</span> |
| <span id="L302"><span class="lineNum"> 302</span> :<span class="tlaGNC"> 34 : if (fstat(file_data->fd, &sbuf) == -1)</span></span> |
| <span id="L303"><span class="lineNum"> 303</span> :<span class="tlaUNC tlaBgUNC"> 0 : goto out;</span></span> |
| <span id="L304"><span class="lineNum"> 304</span> : : </span> |
| <span id="L305"><span class="lineNum"> 305</span> : : /* Won't be able to handle other than MTD devices for now */</span> |
| <span id="L306"><span class="lineNum"> 306</span> :<span class="tlaGNC tlaBgGNC"> 34 : if (S_ISCHR(sbuf.st_mode)) {</span></span> |
| <span id="L307"><span class="lineNum"> 307</span> :<span class="tlaUNC tlaBgUNC"> 0 : file_data->bl.erase = &mtd_erase;</span></span> |
| <span id="L308"><span class="lineNum"> 308</span> :<span class="tlaUNC"> 0 : file_data->bl.get_info = &mtd_get_info;</span></span> |
| <span id="L309"><span class="lineNum"> 309</span> :<span class="tlaUNC"> 0 : file_data->bl.flags = WRITE_NEED_ERASE;</span></span> |
| <span id="L310"><span class="lineNum"> 310</span> :<span class="tlaUNC"> 0 : mtd_get_info(&file_data->bl, NULL, NULL, &(file_data->bl.erase_mask));</span></span> |
| <span id="L311"><span class="lineNum"> 311</span> :<span class="tlaUNC"> 0 : file_data->bl.erase_mask--;</span></span> |
| <span id="L312"><span class="lineNum"> 312</span> :<span class="tlaGNC tlaBgGNC"> 34 : } else if (!S_ISREG(sbuf.st_mode)) {</span></span> |
| <span id="L313"><span class="lineNum"> 313</span> : : /* If not a char device or a regular file something went wrong */</span> |
| <span id="L314"><span class="lineNum"> 314</span> :<span class="tlaUNC tlaBgUNC"> 0 : goto out;</span></span> |
| <span id="L315"><span class="lineNum"> 315</span> : : }</span> |
| <span id="L316"><span class="lineNum"> 316</span> : : </span> |
| <span id="L317"><span class="lineNum"> 317</span> :<span class="tlaGNC tlaBgGNC"> 34 : *bl = &(file_data->bl);</span></span> |
| <span id="L318"><span class="lineNum"> 318</span> :<span class="tlaGNC"> 34 : return 0;</span></span> |
| <span id="L319"><span class="lineNum"> 319</span> :<span class="tlaUNC tlaBgUNC"> 0 : out:</span></span> |
| <span id="L320"><span class="lineNum"> 320</span> :<span class="tlaUNC"> 0 : free(file_data);</span></span> |
| <span id="L321"><span class="lineNum"> 321</span> :<span class="tlaUNC"> 0 : return FLASH_ERR_PARM_ERROR;</span></span> |
| <span id="L322"><span class="lineNum"> 322</span> : : }</span> |
| <span id="L323"><span class="lineNum"> 323</span> : : </span> |
| <span id="L324"><span class="lineNum"> 324</span> :<span class="tlaGNC tlaBgGNC"> 34 : int file_init_path(const char *path, int *r_fd, bool keep_alive,</span></span> |
| <span id="L325"><span class="lineNum"> 325</span> : : struct blocklevel_device **bl)</span> |
| <span id="L326"><span class="lineNum"> 326</span> : : {</span> |
| <span id="L327"><span class="lineNum"> 327</span> :<span class="tlaGNC"> 34 : int fd, rc;</span></span> |
| <span id="L328"><span class="lineNum"> 328</span> :<span class="tlaGNC"> 34 : char *path_ptr = NULL;</span></span> |
| <span id="L329"><span class="lineNum"> 329</span> :<span class="tlaGNC"> 34 : struct file_data *file_data;</span></span> |
| <span id="L330"><span class="lineNum"> 330</span> : : </span> |
| <span id="L331"><span class="lineNum"> 331</span> :<span class="tlaGNC"> 34 : if (!path || !bl)</span></span> |
| <span id="L332"><span class="lineNum"> 332</span> : : return FLASH_ERR_PARM_ERROR;</span> |
| <span id="L333"><span class="lineNum"> 333</span> : : </span> |
| <span id="L334"><span class="lineNum"> 334</span> :<span class="tlaGNC"> 34 : fd = open(path, O_RDWR);</span></span> |
| <span id="L335"><span class="lineNum"> 335</span> :<span class="tlaGNC"> 34 : if (fd == -1)</span></span> |
| <span id="L336"><span class="lineNum"> 336</span> : : return FLASH_ERR_PARM_ERROR;</span> |
| <span id="L337"><span class="lineNum"> 337</span> : : </span> |
| <span id="L338"><span class="lineNum"> 338</span> : : /*</span> |
| <span id="L339"><span class="lineNum"> 339</span> : : * strdup() first so don't have to deal with malloc failure after</span> |
| <span id="L340"><span class="lineNum"> 340</span> : : * file_init()</span> |
| <span id="L341"><span class="lineNum"> 341</span> : : */</span> |
| <span id="L342"><span class="lineNum"> 342</span> :<span class="tlaGNC"> 34 : path_ptr = strdup(path);</span></span> |
| <span id="L343"><span class="lineNum"> 343</span> :<span class="tlaGNC"> 34 : if (!path_ptr) {</span></span> |
| <span id="L344"><span class="lineNum"> 344</span> :<span class="tlaUNC tlaBgUNC"> 0 : rc = FLASH_ERR_MALLOC_FAILED;</span></span> |
| <span id="L345"><span class="lineNum"> 345</span> :<span class="tlaUNC"> 0 : goto out;</span></span> |
| <span id="L346"><span class="lineNum"> 346</span> : : }</span> |
| <span id="L347"><span class="lineNum"> 347</span> : : </span> |
| <span id="L348"><span class="lineNum"> 348</span> :<span class="tlaGNC tlaBgGNC"> 34 : rc = file_init(fd, bl);</span></span> |
| <span id="L349"><span class="lineNum"> 349</span> :<span class="tlaGNC"> 34 : if (rc)</span></span> |
| <span id="L350"><span class="lineNum"> 350</span> :<span class="tlaUNC tlaBgUNC"> 0 : goto out;</span></span> |
| <span id="L351"><span class="lineNum"> 351</span> : : </span> |
| <span id="L352"><span class="lineNum"> 352</span> :<span class="tlaGNC tlaBgGNC"> 34 : file_data = container_of(*bl, struct file_data, bl);</span></span> |
| <span id="L353"><span class="lineNum"> 353</span> :<span class="tlaGNC"> 34 : file_data->bl.keep_alive = keep_alive;</span></span> |
| <span id="L354"><span class="lineNum"> 354</span> :<span class="tlaGNC"> 34 : file_data->path = path_ptr;</span></span> |
| <span id="L355"><span class="lineNum"> 355</span> : : </span> |
| <span id="L356"><span class="lineNum"> 356</span> :<span class="tlaGNC"> 34 : if (r_fd)</span></span> |
| <span id="L357"><span class="lineNum"> 357</span> :<span class="tlaUNC tlaBgUNC"> 0 : *r_fd = fd;</span></span> |
| <span id="L358"><span class="lineNum"> 358</span> : : </span> |
| <span id="L359"><span class="lineNum"> 359</span> : : return rc;</span> |
| <span id="L360"><span class="lineNum"> 360</span> :<span class="tlaUNC"> 0 : out:</span></span> |
| <span id="L361"><span class="lineNum"> 361</span> :<span class="tlaUNC"> 0 : free(path_ptr);</span></span> |
| <span id="L362"><span class="lineNum"> 362</span> :<span class="tlaUNC"> 0 : close(fd);</span></span> |
| <span id="L363"><span class="lineNum"> 363</span> :<span class="tlaUNC"> 0 : return rc;</span></span> |
| <span id="L364"><span class="lineNum"> 364</span> : : }</span> |
| <span id="L365"><span class="lineNum"> 365</span> : : </span> |
| <span id="L366"><span class="lineNum"> 366</span> :<span class="tlaGNC tlaBgGNC"> 34 : void file_exit(struct blocklevel_device *bl)</span></span> |
| <span id="L367"><span class="lineNum"> 367</span> : : {</span> |
| <span id="L368"><span class="lineNum"> 368</span> :<span class="tlaGNC"> 34 : struct file_data *file_data;</span></span> |
| <span id="L369"><span class="lineNum"> 369</span> :<span class="tlaGNC"> 34 : if (bl) {</span></span> |
| <span id="L370"><span class="lineNum"> 370</span> :<span class="tlaGNC"> 34 : free(bl->ecc_prot.prot);</span></span> |
| <span id="L371"><span class="lineNum"> 371</span> :<span class="tlaGNC"> 34 : file_data = container_of(bl, struct file_data, bl);</span></span> |
| <span id="L372"><span class="lineNum"> 372</span> :<span class="tlaGNC"> 34 : free(file_data->name);</span></span> |
| <span id="L373"><span class="lineNum"> 373</span> :<span class="tlaGNC"> 34 : free(file_data->path);</span></span> |
| <span id="L374"><span class="lineNum"> 374</span> :<span class="tlaGNC"> 34 : free(file_data);</span></span> |
| <span id="L375"><span class="lineNum"> 375</span> : : }</span> |
| <span id="L376"><span class="lineNum"> 376</span> :<span class="tlaGNC"> 34 : }</span></span> |
| <span id="L377"><span class="lineNum"> 377</span> : : </span> |
| <span id="L378"><span class="lineNum"> 378</span> :<span class="tlaGNC"> 34 : void file_exit_close(struct blocklevel_device *bl)</span></span> |
| <span id="L379"><span class="lineNum"> 379</span> : : {</span> |
| <span id="L380"><span class="lineNum"> 380</span> :<span class="tlaGNC"> 34 : struct file_data *file_data;</span></span> |
| <span id="L381"><span class="lineNum"> 381</span> :<span class="tlaGNC"> 34 : if (bl) {</span></span> |
| <span id="L382"><span class="lineNum"> 382</span> :<span class="tlaGNC"> 34 : file_data = container_of(bl, struct file_data, bl);</span></span> |
| <span id="L383"><span class="lineNum"> 383</span> :<span class="tlaGNC"> 34 : close(file_data->fd);</span></span> |
| <span id="L384"><span class="lineNum"> 384</span> :<span class="tlaGNC"> 34 : file_exit(bl);</span></span> |
| <span id="L385"><span class="lineNum"> 385</span> : : }</span> |
| <span id="L386"><span class="lineNum"> 386</span> :<span class="tlaGNC"> 34 : }</span></span> |
| </pre> |
| </td> |
| </tr> |
| </table> |
| <br> |
| |
| <table width="100%" border=0 cellspacing=0 cellpadding=0> |
| <tr><td class="ruler"><img src="../glass.png" width=3 height=3 alt=""></td></tr> |
| <tr><td class="versionInfo">Generated by: <a href="https://github.com//linux-test-project/lcov" target="_parent">LCOV version 2.0-1</a></td></tr> |
| </table> |
| <br> |
| |
| </body> |
| </html> |
