📄 fs.h
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<!doctype html public "-//W3C//DTD HTML 3.2//EN"><html><head><title>Linux/include/linux/fs.h</title><meta http-equiv=Content-Type content="text/html; charset=gb2312"><base href="http://oldlinux.org/lxr/http/"></head><body bgcolor=white><div align=center> [<b><i>源代码浏览</i></b>] [<a href="diff/include/linux/fs.h">区别标定</a>] [<a href="ident">标识符搜索</a>] [<a href="search">文本搜索</a>] [<a href="find">文件搜索</a>]</div><h1 align=center> <a href="http:/"> OldLinux</a> <a href="http:blurb.html"> 交叉引用</a><br> <a href="source/">Linux</a>/<a href="source/include/">include</a>/<a href="source/include/linux/">linux</a>/<a href="source/include/linux/fs.h">fs.h</a></h1><div align=center> <b>版本:</b> [<a href="source/include/linux/fs.h?v=1.0">1.0</a>] [<a href="source/include/linux/fs.h?v=0.99.11">0.99.11</a>] [<a href="source/include/linux/fs.h?v=0.99">0.99</a>] [<a href="source/include/linux/fs.h?v=0.97">0.97</a>] [<a href="source/include/linux/fs.h?v=0.96a">0.96a</a>] [<a href="source/include/linux/fs.h?v=0.95">0.95</a>] [<a href="source/include/linux/fs.h?v=0.12">0.12</a>] [<b><i>0.11</i></b>] [<a href="source/include/linux/fs.h?v=0.01">0.01</a>] <br> <b>体系结构:</b> [<b><i>i386</i></b>] <br></div><hr><pre> <a name=L1 href="source/include/linux/fs.h#L1">1</a> <b><i>/*</i></b> <a name=L2 href="source/include/linux/fs.h#L2">2</a> <b><i> * This file has definitions for some important file table</i></b> <a name=L3 href="source/include/linux/fs.h#L3">3</a> <b><i> * structures etc.</i></b> <a name=L4 href="source/include/linux/fs.h#L4">4</a> <b><i> */</i></b> <a name=L5 href="source/include/linux/fs.h#L5">5</a> <a name=L6 href="source/include/linux/fs.h#L6">6</a> #ifndef <a href="ident?i=_FS_H">_FS_H</a> <a name=L7 href="source/include/linux/fs.h#L7">7</a> #define <a href="ident?i=_FS_H">_FS_H</a> <a name=L8 href="source/include/linux/fs.h#L8">8</a> <a name=L9 href="source/include/linux/fs.h#L9">9</a> #include <sys/types.h> <a name=L10 href="source/include/linux/fs.h#L10">10</a> <a name=L11 href="source/include/linux/fs.h#L11">11</a> <b><i>/* devices are as follows: (same as minix, so we can use the minix</i></b> <a name=L12 href="source/include/linux/fs.h#L12">12</a> <b><i> * file system. These are major numbers.)</i></b> <a name=L13 href="source/include/linux/fs.h#L13">13</a> <b><i> *</i></b> <a name=L14 href="source/include/linux/fs.h#L14">14</a> <b><i> * 0 - unused (nodev)</i></b> <a name=L15 href="source/include/linux/fs.h#L15">15</a> <b><i> * 1 - /dev/mem</i></b> <a name=L16 href="source/include/linux/fs.h#L16">16</a> <b><i> * 2 - /dev/fd</i></b> <a name=L17 href="source/include/linux/fs.h#L17">17</a> <b><i> * 3 - /dev/hd</i></b> <a name=L18 href="source/include/linux/fs.h#L18">18</a> <b><i> * 4 - /dev/ttyx</i></b> <a name=L19 href="source/include/linux/fs.h#L19">19</a> <b><i> * 5 - /dev/tty</i></b> <a name=L20 href="source/include/linux/fs.h#L20">20</a> <b><i> * 6 - /dev/lp</i></b> <a name=L21 href="source/include/linux/fs.h#L21">21</a> <b><i> * 7 - unnamed pipes</i></b> <a name=L22 href="source/include/linux/fs.h#L22">22</a> <b><i> */</i></b> <a name=L23 href="source/include/linux/fs.h#L23">23</a> <a name=L24 href="source/include/linux/fs.h#L24">24</a> #define <a href="ident?i=IS_SEEKABLE">IS_SEEKABLE</a>(<a href="ident?i=x">x</a>) ((<a href="ident?i=x">x</a>)>=1 && (<a href="ident?i=x">x</a>)<=3) <a name=L25 href="source/include/linux/fs.h#L25">25</a> <a name=L26 href="source/include/linux/fs.h#L26">26</a> #define <a href="ident?i=READ">READ</a> 0 <a name=L27 href="source/include/linux/fs.h#L27">27</a> #define <a href="ident?i=WRITE">WRITE</a> 1 <a name=L28 href="source/include/linux/fs.h#L28">28</a> #define <a href="ident?i=READA">READA</a> 2 <b><i>/* read-ahead - don't pause */</i></b> <a name=L29 href="source/include/linux/fs.h#L29">29</a> #define <a href="ident?i=WRITEA">WRITEA</a> 3 <b><i>/* "write-ahead" - silly, but somewhat useful */</i></b> <a name=L30 href="source/include/linux/fs.h#L30">30</a> <a name=L31 href="source/include/linux/fs.h#L31">31</a> void <a href="ident?i=buffer_init">buffer_init</a>(long buffer_end); <a name=L32 href="source/include/linux/fs.h#L32">32</a> <a name=L33 href="source/include/linux/fs.h#L33">33</a> #define <a href="ident?i=MAJOR">MAJOR</a>(a) (((unsigned)(a))>>8) <a name=L34 href="source/include/linux/fs.h#L34">34</a> #define <a href="ident?i=MINOR">MINOR</a>(a) ((a)&0xff) <a name=L35 href="source/include/linux/fs.h#L35">35</a> <a name=L36 href="source/include/linux/fs.h#L36">36</a> #define <a href="ident?i=NAME_LEN">NAME_LEN</a> 14 <a name=L37 href="source/include/linux/fs.h#L37">37</a> #define <a href="ident?i=ROOT_INO">ROOT_INO</a> 1 <a name=L38 href="source/include/linux/fs.h#L38">38</a> <a name=L39 href="source/include/linux/fs.h#L39">39</a> #define <a href="ident?i=I_MAP_SLOTS">I_MAP_SLOTS</a> 8 <a name=L40 href="source/include/linux/fs.h#L40">40</a> #define <a href="ident?i=Z_MAP_SLOTS">Z_MAP_SLOTS</a> 8 <a name=L41 href="source/include/linux/fs.h#L41">41</a> #define <a href="ident?i=SUPER_MAGIC">SUPER_MAGIC</a> 0x137F <a name=L42 href="source/include/linux/fs.h#L42">42</a> <a name=L43 href="source/include/linux/fs.h#L43">43</a> #define <a href="ident?i=NR_OPEN">NR_OPEN</a> 20 <a name=L44 href="source/include/linux/fs.h#L44">44</a> #define <a href="ident?i=NR_INODE">NR_INODE</a> 32 <a name=L45 href="source/include/linux/fs.h#L45">45</a> #define <a href="ident?i=NR_FILE">NR_FILE</a> 64 <a name=L46 href="source/include/linux/fs.h#L46">46</a> #define <a href="ident?i=NR_SUPER">NR_SUPER</a> 8 <a name=L47 href="source/include/linux/fs.h#L47">47</a> #define <a href="ident?i=NR_HASH">NR_HASH</a> 307 <a name=L48 href="source/include/linux/fs.h#L48">48</a> #define <a href="ident?i=NR_BUFFERS">NR_BUFFERS</a> <a href="ident?i=nr_buffers">nr_buffers</a> <a name=L49 href="source/include/linux/fs.h#L49">49</a> #define <a href="ident?i=BLOCK_SIZE">BLOCK_SIZE</a> 1024 <a name=L50 href="source/include/linux/fs.h#L50">50</a> #define <a href="ident?i=BLOCK_SIZE_BITS">BLOCK_SIZE_BITS</a> 10 <a name=L51 href="source/include/linux/fs.h#L51">51</a> #ifndef <a href="ident?i=NULL">NULL</a> <a name=L52 href="source/include/linux/fs.h#L52">52</a> #define <a href="ident?i=NULL">NULL</a> ((void *) 0) <a name=L53 href="source/include/linux/fs.h#L53">53</a> #endif <a name=L54 href="source/include/linux/fs.h#L54">54</a> <a name=L55 href="source/include/linux/fs.h#L55">55</a> #define <a href="ident?i=INODES_PER_BLOCK">INODES_PER_BLOCK</a> ((<a href="ident?i=BLOCK_SIZE">BLOCK_SIZE</a>)/(sizeof (struct <a href="ident?i=d_inode">d_inode</a>))) <a name=L56 href="source/include/linux/fs.h#L56">56</a> #define <a href="ident?i=DIR_ENTRIES_PER_BLOCK">DIR_ENTRIES_PER_BLOCK</a> ((<a href="ident?i=BLOCK_SIZE">BLOCK_SIZE</a>)/(sizeof (struct <a href="ident?i=dir_entry">dir_entry</a>))) <a name=L57 href="source/include/linux/fs.h#L57">57</a> <a name=L58 href="source/include/linux/fs.h#L58">58</a> #define <a href="ident?i=PIPE_HEAD">PIPE_HEAD</a>(inode) ((inode).i_zone[0]) <a name=L59 href="source/include/linux/fs.h#L59">59</a> #define <a href="ident?i=PIPE_TAIL">PIPE_TAIL</a>(inode) ((inode).i_zone[1]) <a name=L60 href="source/include/linux/fs.h#L60">60</a> #define <a href="ident?i=PIPE_SIZE">PIPE_SIZE</a>(inode) ((<a href="ident?i=PIPE_HEAD">PIPE_HEAD</a>(inode)-<a href="ident?i=PIPE_TAIL">PIPE_TAIL</a>(inode))&(<a href="ident?i=PAGE_SIZE">PAGE_SIZE</a>-1)) <a name=L61 href="source/include/linux/fs.h#L61">61</a> #define <a href="ident?i=PIPE_EMPTY">PIPE_EMPTY</a>(inode) (<a href="ident?i=PIPE_HEAD">PIPE_HEAD</a>(inode)==<a href="ident?i=PIPE_TAIL">PIPE_TAIL</a>(inode)) <a name=L62 href="source/include/linux/fs.h#L62">62</a> #define <a href="ident?i=PIPE_FULL">PIPE_FULL</a>(inode) (<a href="ident?i=PIPE_SIZE">PIPE_SIZE</a>(inode)==(<a href="ident?i=PAGE_SIZE">PAGE_SIZE</a>-1)) <a name=L63 href="source/include/linux/fs.h#L63">63</a> #define <a href="ident?i=INC_PIPE">INC_PIPE</a>(<a href="ident?i=head">head</a>) \ <a name=L64 href="source/include/linux/fs.h#L64">64</a> __asm__(<i>"incl %0\n\tandl $4095,%0"</i>::<i>"m"</i> (<a href="ident?i=head">head</a>)) <a name=L65 href="source/include/linux/fs.h#L65">65</a> <a name=L66 href="source/include/linux/fs.h#L66">66</a> typedef char <a href="ident?i=buffer_block">buffer_block</a>[<a href="ident?i=BLOCK_SIZE">BLOCK_SIZE</a>]; <a name=L67 href="source/include/linux/fs.h#L67">67</a> <a name=L68 href="source/include/linux/fs.h#L68">68</a> struct <a href="ident?i=buffer_head">buffer_head</a> { <a name=L69 href="source/include/linux/fs.h#L69">69</a> char * b_data; <b><i>/* pointer to data block (1024 bytes) */</i></b> <a name=L70 href="source/include/linux/fs.h#L70">70</a> unsigned long b_blocknr; <b><i>/* block number */</i></b> <a name=L71 href="source/include/linux/fs.h#L71">71</a> unsigned short b_dev; <b><i>/* device (0 = free) */</i></b> <a name=L72 href="source/include/linux/fs.h#L72">72</a> unsigned char b_uptodate; <a name=L73 href="source/include/linux/fs.h#L73">73</a> unsigned char b_dirt; <b><i>/* 0-clean,1-dirty */</i></b> <a name=L74 href="source/include/linux/fs.h#L74">74</a> unsigned char b_count; <b><i>/* users using this block */</i></b> <a name=L75 href="source/include/linux/fs.h#L75">75</a> unsigned char b_lock; <b><i>/* 0 - ok, 1 -locked */</i></b> <a name=L76 href="source/include/linux/fs.h#L76">76</a> struct <a href="ident?i=task_struct">task_struct</a> * b_wait; <a name=L77 href="source/include/linux/fs.h#L77">77</a> struct <a href="ident?i=buffer_head">buffer_head</a> * b_prev; <a name=L78 href="source/include/linux/fs.h#L78">78</a> struct <a href="ident?i=buffer_head">buffer_head</a> * b_next; <a name=L79 href="source/include/linux/fs.h#L79">79</a> struct <a href="ident?i=buffer_head">buffer_head</a> * b_prev_free; <a name=L80 href="source/include/linux/fs.h#L80">80</a> struct <a href="ident?i=buffer_head">buffer_head</a> * b_next_free; <a name=L81 href="source/include/linux/fs.h#L81">81</a> }; <a name=L82 href="source/include/linux/fs.h#L82">82</a> <a name=L83 href="source/include/linux/fs.h#L83">83</a> struct <a href="ident?i=d_inode">d_inode</a> { <a name=L84 href="source/include/linux/fs.h#L84">84</a> unsigned short i_mode; <a name=L85 href="source/include/linux/fs.h#L85">85</a> unsigned short i_uid; <a name=L86 href="source/include/linux/fs.h#L86">86</a> unsigned long i_size; <a name=L87 href="source/include/linux/fs.h#L87">87</a> unsigned long i_time; <a name=L88 href="source/include/linux/fs.h#L88">88</a> unsigned char i_gid; <a name=L89 href="source/include/linux/fs.h#L89">89</a> unsigned char i_nlinks; <a name=L90 href="source/include/linux/fs.h#L90">90</a> unsigned short i_zone[9]; <a name=L91 href="source/include/linux/fs.h#L91">91</a> };⌨️ 快捷键说明
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