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302
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1 #include "types.h"
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301
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2 #include "defs.h"
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302
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3 #include "param.h"
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4 #include "stat.h"
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5 #include "mmu.h"
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6 #include "proc.h"
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7 #include "spinlock.h"
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8 #include "buf.h"
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301
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9 #include "fs.h"
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302
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10 #include "file.h"
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295
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11 #interface "fs.dg"
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294
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12
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13 // ----
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14 // typedef struct fs_impl<Impl, Isa> impl fs{
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15 // union Data* fs_impl;
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16 //
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17 //
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18 //
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19 //
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20 // } fs_impl;
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21 // ----
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22
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23 fs* createfs_impl(struct Context* cbc_context) {
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24 struct fs* fs = new fs();
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25 struct fs_impl* fs_impl = new fs_impl();
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26 fs->fs = (union Data*)fs_impl;
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27 fs_impl->fs_impl = NULL;
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28 fs->readsb = C_readsbfs_impl;
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29 fs->iinit = C_iinitfs_impl;
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30 fs->ialloc = C_iallocfs_impl;
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31 fs_impl->allocinode = C_allocinode;
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32 fs_impl->allocinode_loop = C_allocinode_loop;
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303
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33 fs_impl->allocinode_loopcheck = C_allocinode_loopcheck;
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34 fs_impl->allocinode_noloop = C_allocinode_noloop;
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294
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35 fs->iupdate = C_iupdatefs_impl;
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36 fs->idup = C_idupfs_impl;
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37 fs->ilock = C_ilockfs_impl;
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305
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38 fs_impl->lockinode = C_lockinode;
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294
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39 fs->iunlock = C_iunlockfs_impl;
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40 fs->iput = C_iputfs_impl;
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41 fs->iunlockput = C_iunlockputfs_impl;
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42 fs->stati = C_statifs_impl;
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43 fs->readi = C_readifs_impl;
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44 fs->writei = C_writeifs_impl;
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45 fs->namecmp = C_namecmpfs_impl;
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46 fs->dirlookup = C_dirlookupfs_impl;
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296
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47 fs->dirlink = C_dirlinkfs_impl;
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294
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48 fs->namei = C_nameifs_impl;
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49 fs->nameiparent = C_nameiparentfs_impl;
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50 return fs;
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51 }
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298
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52
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299
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53 typedef struct superblock superblock;
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296
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54 __code readsbfs_impl(struct fs_impl* fs, uint dev, struct superblock* sb, __code next(...)) { //:skip
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294
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55
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301
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56 struct buf* bp;
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57
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58 bp = bread(dev, 1);
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59 memmove(sb, bp->data, sizeof(*sb));
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60 brelse(bp);
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61
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294
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62 goto next(...);
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63 }
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64
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302
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65 struct {
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66 struct spinlock lock;
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67 struct inode inode[NINODE];
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68 } icache;
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69
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294
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70 __code iinitfs_impl(struct fs_impl* fs, __code next(...)) {
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71
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302
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72 initlock(&icache.lock, "icache");
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73
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294
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74 goto next(...);
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75 }
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76
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77 __code iallocfs_impl(struct fs_impl* fs, uint dev, short type, __code next(...)) {
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305
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78 goto allocinode(fs, dev, sb, next(...));
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294
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79 }
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80
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81 __code iupdatefs_impl(struct fs_impl* fs, struct inode* ip, __code next(...)) {
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82
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305
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83 struct buf *bp;
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84 struct dinode *dip;
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85
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86 bp = bread(ip->dev, IBLOCK(ip->inum));
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87
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88 dip = (struct dinode*) bp->data + ip->inum % IPB;
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89 dip->type = ip->type;
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90 dip->major = ip->major;
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91 dip->minor = ip->minor;
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92 dip->nlink = ip->nlink;
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93 dip->size = ip->size;
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94
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95 memmove(dip->addrs, ip->addrs, sizeof(ip->addrs));
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96 log_write(bp);
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97 brelse(bp);
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98
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99
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294
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100 goto next(...);
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101 }
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102
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103 __code idupfs_impl(struct fs_impl* fs, struct inode* ip, __code next(...)) {
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104
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305
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105 acquire(&icache.lock);
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106 ip->ref++;
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107 release(&icache.lock);
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108
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109 goto next(ip, ...);
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110
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294
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111 }
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112
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113 __code ilockfs_impl(struct fs_impl* fs, struct inode* ip, __code next(...)) {
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114
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305
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115 goto lockinode(fs, ip, bp, dip, next(...));
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294
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116 }
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117
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118 __code iunlockfs_impl(struct fs_impl* fs, struct inode* ip, __code next(...)) {
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119
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120 goto next(...);
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121 }
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122
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123 __code iputfs_impl(struct fs_impl* fs, struct inode* ip, __code next(...)) {
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124
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125 goto next(...);
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126 }
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127
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128 __code iunlockputfs_impl(struct fs_impl* fs, struct inode* ip, __code next(...)) {
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129
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130 goto next(...);
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131 }
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132
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299
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133 typedef struct stat stat;
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296
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134 __code statifs_impl(struct fs_impl* fs , struct inode* ip, struct stat* st, __code next(...)) { //:skip
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294
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135
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136 goto next(...);
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137 }
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138
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139 __code readifs_impl(struct fs_impl* fs, struct inode* ip, char* dst, uint off, uint n, __code next(...)) {
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140
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141 goto next(...);
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142 }
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143
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144 __code writeifs_impl(struct fs_impl* fs, struct inode* ip, char* src, uint off, uint n, __code next(...)) {
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145
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146 goto next(...);
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147 }
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148
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149 __code namecmpfs_impl(struct fs_impl* fs, const char* s, const char* t, __code next(...)) {
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150
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151 goto next(...);
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152 }
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153
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154 __code dirlookupfs_impl(struct inode* dp, char* name, uint* poff, __code next(...)) {
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155
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156 goto next(...);
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157 }
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158
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296
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159 __code dirlinkfs_impl(struct fs_impl* fs, struct inode* dp, char* name, uint inum, __code next(...)) {
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294
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160
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296
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161 goto next(...);
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294
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162 }
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163
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164 __code nameifs_impl(struct fs_impl* fs, char* path, __code next(...)) {
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165
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166 goto next(...);
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167 }
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168
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169 __code nameiparentfs_impl(struct fs_impl* fs, char* path, char* name, __code next(...)) {
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170
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171 goto next(...);
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172 }
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173
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