Mercurial > hg > nginx
annotate src/os/unix/ngx_files.c @ 3200:26784c34e8be
*) reset cached dirent.d_type after stat()
this fixes slash after link to a directory in ngx_http_autoindex_module;
*) use cached dirent.d_type as hint on all systems
the issues has been introduced in r2235
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Wed, 14 Oct 2009 11:33:35 +0000 |
| parents | b1b1775698d5 |
| children | 04cfc09b8b8d |
| rev | line source |
|---|---|
|
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
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4 */ |
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5 |
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6 |
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7 #include <ngx_config.h> |
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8 #include <ngx_core.h> |
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10 |
| 561 | 11 ssize_t |
| 12 ngx_read_file(ngx_file_t *file, u_char *buf, size_t size, off_t offset) | |
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13 { |
| 561 | 14 ssize_t n; |
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15 |
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16 ngx_log_debug4(NGX_LOG_DEBUG_CORE, file->log, 0, |
| 461 | 17 "read: %d, %p, %uz, %O", file->fd, buf, size, offset); |
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| 469 | 19 #if (NGX_HAVE_PREAD) |
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21 n = pread(file->fd, buf, size, offset); |
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22 |
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23 if (n == -1) { |
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24 ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno, |
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25 "pread() \"%s\" failed", file->name.data); |
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26 return NGX_ERROR; |
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27 } |
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28 |
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29 #else |
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30 |
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31 if (file->sys_offset != offset) { |
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32 if (lseek(file->fd, offset, SEEK_SET) == -1) { |
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33 ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno, |
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34 "lseek() \"%s\" failed", file->name.data); |
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35 return NGX_ERROR; |
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36 } |
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37 |
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38 file->sys_offset = offset; |
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39 } |
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40 |
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41 n = read(file->fd, buf, size); |
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42 |
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43 if (n == -1) { |
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44 ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno, |
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45 "read() \"%s\" failed", file->name.data); |
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46 return NGX_ERROR; |
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47 } |
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48 |
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49 file->sys_offset += n; |
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50 |
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51 #endif |
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52 |
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53 file->offset += n; |
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54 |
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55 return n; |
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56 } |
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57 |
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58 |
| 561 | 59 ssize_t |
| 60 ngx_write_file(ngx_file_t *file, u_char *buf, size_t size, off_t offset) | |
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61 { |
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62 ssize_t n, written; |
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63 |
| 461 | 64 ngx_log_debug4(NGX_LOG_DEBUG_CORE, file->log, 0, |
| 65 "write: %d, %p, %uz, %O", file->fd, buf, size, offset); | |
| 66 | |
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67 written = 0; |
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68 |
| 469 | 69 #if (NGX_HAVE_PWRITE) |
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70 |
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71 for ( ;; ) { |
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72 n = pwrite(file->fd, buf, size, offset); |
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73 |
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74 if (n == -1) { |
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75 ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno, |
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76 "pwrite() \"%s\" failed", file->name.data); |
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77 return NGX_ERROR; |
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78 } |
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79 |
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80 file->offset += n; |
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81 written += n; |
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82 |
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83 if ((size_t) n == size) { |
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84 return written; |
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85 } |
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86 |
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87 offset += n; |
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88 size -= n; |
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89 } |
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90 |
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91 #else |
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92 |
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93 if (file->sys_offset != offset) { |
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94 if (lseek(file->fd, offset, SEEK_SET) == -1) { |
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95 ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno, |
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96 "lseek() \"%s\" failed", file->name.data); |
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97 return NGX_ERROR; |
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98 } |
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99 |
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100 file->sys_offset = offset; |
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101 } |
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102 |
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103 for ( ;; ) { |
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104 n = write(file->fd, buf, size); |
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105 |
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106 if (n == -1) { |
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107 ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno, |
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108 "write() \"%s\" failed", file->name.data); |
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109 return NGX_ERROR; |
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110 } |
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111 |
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112 file->offset += n; |
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113 written += n; |
|
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114 |
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115 if ((size_t) n == size) { |
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116 return written; |
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117 } |
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118 |
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119 size -= n; |
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120 } |
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121 #endif |
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122 } |
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123 |
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124 |
| 561 | 125 ngx_fd_t |
| 1046 | 126 ngx_open_tempfile(u_char *name, ngx_uint_t persistent, ngx_uint_t access) |
|
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127 { |
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128 ngx_fd_t fd; |
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129 |
| 1046 | 130 fd = open((const char *) name, O_CREAT|O_EXCL|O_RDWR, |
| 131 access ? access : 0600); | |
|
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132 |
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133 if (fd != -1 && !persistent) { |
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134 unlink((const char *) name); |
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135 } |
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136 |
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137 return fd; |
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138 } |
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139 |
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140 |
| 461 | 141 #define NGX_IOVS 8 |
| 142 | |
| 561 | 143 ssize_t |
| 144 ngx_write_chain_to_file(ngx_file_t *file, ngx_chain_t *cl, off_t offset, | |
| 145 ngx_pool_t *pool) | |
|
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146 { |
|
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147 u_char *prev; |
|
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148 size_t size; |
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149 ssize_t n; |
| 461 | 150 ngx_array_t vec; |
| 151 struct iovec *iov, iovs[NGX_IOVS]; | |
|
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152 |
| 461 | 153 /* use pwrite() if there is the only buf in a chain */ |
|
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154 |
|
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155 if (cl->next == NULL) { |
|
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156 return ngx_write_file(file, cl->buf->pos, |
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157 (size_t) (cl->buf->last - cl->buf->pos), |
|
194
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158 offset); |
|
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159 } |
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160 |
| 461 | 161 vec.elts = iovs; |
| 162 vec.size = sizeof(struct iovec); | |
| 577 | 163 vec.nalloc = NGX_IOVS; |
| 461 | 164 vec.pool = pool; |
|
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165 |
| 461 | 166 do { |
| 167 prev = NULL; | |
| 168 iov = NULL; | |
| 169 size = 0; | |
|
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170 |
| 461 | 171 vec.nelts = 0; |
| 172 | |
| 173 /* create the iovec and coalesce the neighbouring bufs */ | |
|
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174 |
| 461 | 175 while (cl && vec.nelts < IOV_MAX) { |
| 176 if (prev == cl->buf->pos) { | |
| 177 iov->iov_len += cl->buf->last - cl->buf->pos; | |
|
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178 |
| 461 | 179 } else { |
| 501 | 180 iov = ngx_array_push(&vec); |
| 181 if (iov == NULL) { | |
| 461 | 182 return NGX_ERROR; |
| 183 } | |
| 184 | |
| 185 iov->iov_base = (void *) cl->buf->pos; | |
| 186 iov->iov_len = cl->buf->last - cl->buf->pos; | |
| 187 } | |
| 188 | |
| 189 size += cl->buf->last - cl->buf->pos; | |
| 190 prev = cl->buf->last; | |
| 191 cl = cl->next; | |
|
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192 } |
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193 |
| 461 | 194 /* use pwrite() if there is the only iovec buffer */ |
|
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195 |
| 461 | 196 if (vec.nelts == 1) { |
| 197 iov = vec.elts; | |
| 198 return ngx_write_file(file, (u_char *) iov[0].iov_base, | |
| 199 iov[0].iov_len, offset); | |
| 200 } | |
|
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201 |
| 461 | 202 if (file->sys_offset != offset) { |
| 203 if (lseek(file->fd, offset, SEEK_SET) == -1) { | |
| 204 ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno, | |
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205 "lseek() \"%s\" failed", file->name.data); |
| 461 | 206 return NGX_ERROR; |
| 207 } | |
|
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208 |
| 461 | 209 file->sys_offset = offset; |
| 210 } | |
| 211 | |
| 212 n = writev(file->fd, vec.elts, vec.nelts); | |
| 213 | |
| 214 if (n == -1) { | |
| 215 ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno, | |
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216 "writev() \"%s\" failed", file->name.data); |
|
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217 return NGX_ERROR; |
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218 } |
|
191
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219 |
| 461 | 220 if ((size_t) n != size) { |
| 221 ngx_log_error(NGX_LOG_CRIT, file->log, 0, | |
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222 "writev() \"%s\" has written only %z of %uz", |
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223 file->name.data, n, size); |
| 461 | 224 return NGX_ERROR; |
| 225 } | |
|
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226 |
| 461 | 227 file->sys_offset += n; |
| 228 file->offset += n; | |
|
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229 |
| 461 | 230 } while (cl); |
|
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231 |
|
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232 return n; |
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233 } |
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234 |
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235 |
| 561 | 236 ngx_int_t |
| 681 | 237 ngx_set_file_time(u_char *name, ngx_fd_t fd, time_t s) |
| 238 { | |
| 239 struct timeval tv[2]; | |
| 240 | |
| 241 tv[0].tv_sec = s; | |
| 242 tv[0].tv_usec = 0; | |
| 243 tv[1].tv_sec = s; | |
| 244 tv[1].tv_usec = 0; | |
| 245 | |
| 246 if (utimes((char *) name, tv) != -1) { | |
| 247 return NGX_OK; | |
| 248 } | |
| 249 | |
| 250 return NGX_ERROR; | |
| 251 } | |
| 252 | |
| 253 | |
| 254 ngx_int_t | |
| 561 | 255 ngx_open_dir(ngx_str_t *name, ngx_dir_t *dir) |
|
186
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256 { |
|
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257 dir->dir = opendir((const char *) name->data); |
|
186
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258 |
|
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259 if (dir->dir == NULL) { |
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260 return NGX_ERROR; |
|
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261 } |
|
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262 |
| 457 | 263 dir->valid_info = 0; |
|
186
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264 |
|
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265 return NGX_OK; |
|
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266 } |
| 561 | 267 |
| 268 | |
| 727 | 269 ngx_int_t |
|
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270 ngx_read_dir(ngx_dir_t *dir) |
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271 { |
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272 dir->de = readdir(dir->dir); |
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273 |
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274 if (dir->de) { |
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275 #if (NGX_HAVE_D_TYPE) |
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276 dir->type = dir->de->d_type; |
|
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277 #else |
|
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278 dir->type = 0; |
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279 #endif |
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280 return NGX_OK; |
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281 } |
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282 |
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283 return NGX_ERROR; |
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284 } |
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285 |
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286 |
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287 ngx_int_t |
| 727 | 288 ngx_open_glob(ngx_glob_t *gl) |
| 289 { | |
| 1980 | 290 int n; |
| 291 | |
| 292 n = glob((char *) gl->pattern, GLOB_NOSORT, NULL, &gl->pglob); | |
| 293 | |
| 294 if (n == 0) { | |
| 295 return NGX_OK; | |
| 296 } | |
| 297 | |
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298 #ifdef GLOB_NOMATCH |
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299 |
| 1980 | 300 if (n == GLOB_NOMATCH && gl->test) { |
| 727 | 301 return NGX_OK; |
| 302 } | |
| 303 | |
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304 #endif |
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305 |
| 727 | 306 return NGX_ERROR; |
| 307 } | |
| 308 | |
| 309 | |
| 310 ngx_int_t | |
| 311 ngx_read_glob(ngx_glob_t *gl, ngx_str_t *name) | |
| 312 { | |
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313 size_t count; |
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314 |
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315 #ifdef GLOB_NOMATCH |
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316 count = (size_t) gl->pglob.gl_pathc; |
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317 #else |
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318 count = (size_t) gl->pglob.gl_matchc; |
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319 #endif |
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320 |
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321 if (gl->n < count) { |
| 727 | 322 |
| 323 name->len = (size_t) ngx_strlen(gl->pglob.gl_pathv[gl->n]); | |
| 324 name->data = (u_char *) gl->pglob.gl_pathv[gl->n]; | |
| 325 gl->n++; | |
| 326 | |
| 327 return NGX_OK; | |
| 328 } | |
| 329 | |
| 330 return NGX_DONE; | |
| 331 } | |
| 332 | |
| 333 | |
| 334 void | |
| 335 ngx_close_glob(ngx_glob_t *gl) | |
| 336 { | |
| 337 globfree(&gl->pglob); | |
| 338 } | |
| 339 | |
| 340 | |
| 611 | 341 ngx_err_t |
| 342 ngx_trylock_fd(ngx_fd_t fd) | |
| 561 | 343 { |
| 344 struct flock fl; | |
| 345 | |
| 611 | 346 fl.l_start = 0; |
| 347 fl.l_len = 0; | |
| 348 fl.l_pid = 0; | |
| 349 fl.l_type = F_WRLCK; | |
| 561 | 350 fl.l_whence = SEEK_SET; |
| 611 | 351 |
| 352 if (fcntl(fd, F_SETLK, &fl) == -1) { | |
| 353 return ngx_errno; | |
| 354 } | |
| 355 | |
| 356 return 0; | |
| 357 } | |
| 358 | |
| 359 | |
| 360 ngx_err_t | |
| 361 ngx_lock_fd(ngx_fd_t fd) | |
| 362 { | |
| 363 struct flock fl; | |
| 364 | |
| 365 fl.l_start = 0; | |
| 561 | 366 fl.l_len = 0; |
| 367 fl.l_pid = 0; | |
| 368 fl.l_type = F_WRLCK; | |
| 611 | 369 fl.l_whence = SEEK_SET; |
| 561 | 370 |
| 611 | 371 if (fcntl(fd, F_SETLKW, &fl) == -1) { |
| 372 return ngx_errno; | |
| 561 | 373 } |
| 374 | |
| 611 | 375 return 0; |
| 561 | 376 } |
| 377 | |
| 378 | |
| 611 | 379 ngx_err_t |
| 380 ngx_unlock_fd(ngx_fd_t fd) | |
| 561 | 381 { |
| 382 struct flock fl; | |
| 383 | |
| 611 | 384 fl.l_start = 0; |
| 561 | 385 fl.l_len = 0; |
| 386 fl.l_pid = 0; | |
| 387 fl.l_type = F_UNLCK; | |
| 611 | 388 fl.l_whence = SEEK_SET; |
| 561 | 389 |
| 611 | 390 if (fcntl(fd, F_SETLK, &fl) == -1) { |
| 391 return ngx_errno; | |
| 561 | 392 } |
| 393 | |
| 611 | 394 return 0; |
| 561 | 395 } |
| 2129 | 396 |
| 397 | |
| 398 #if (NGX_HAVE_O_DIRECT) | |
| 399 | |
| 400 ngx_int_t | |
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401 ngx_directio_on(ngx_fd_t fd) |
| 2129 | 402 { |
| 403 int flags; | |
| 404 | |
| 405 flags = fcntl(fd, F_GETFL); | |
| 406 | |
| 407 if (flags == -1) { | |
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408 return NGX_FILE_ERROR; |
| 2129 | 409 } |
| 410 | |
| 411 return fcntl(fd, F_SETFL, flags | O_DIRECT); | |
| 412 } | |
| 413 | |
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414 |
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415 ngx_int_t |
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416 ngx_directio_off(ngx_fd_t fd) |
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417 { |
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418 int flags; |
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419 |
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420 flags = fcntl(fd, F_GETFL); |
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421 |
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422 if (flags == -1) { |
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423 return NGX_FILE_ERROR; |
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424 } |
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425 |
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426 return fcntl(fd, F_SETFL, flags & ~O_DIRECT); |
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427 } |
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428 |
| 2129 | 429 #endif |
| 2615 | 430 |
| 431 | |
| 432 #if (NGX_HAVE_STATFS) | |
| 433 | |
| 434 size_t | |
| 435 ngx_fs_bsize(u_char *name) | |
| 436 { | |
| 437 struct statfs fs; | |
| 438 | |
| 439 if (statfs((char *) name, &fs) == -1) { | |
| 440 return 512; | |
| 441 } | |
| 442 | |
| 443 if ((fs.f_bsize % 512) != 0) { | |
| 444 return 512; | |
| 445 } | |
| 446 | |
| 447 return (size_t) fs.f_bsize; | |
| 448 } | |
| 449 | |
| 450 #elif (NGX_HAVE_STATVFS) | |
| 451 | |
| 452 size_t | |
| 453 ngx_fs_bsize(u_char *name) | |
| 454 { | |
| 455 struct statvfs fs; | |
| 456 | |
| 457 if (statvfs((char *) name, &fs) == -1) { | |
| 458 return 512; | |
| 459 } | |
| 460 | |
| 461 if ((fs.f_frsize % 512) != 0) { | |
| 462 return 512; | |
| 463 } | |
| 464 | |
| 465 return (size_t) fs.f_frsize; | |
| 466 } | |
| 467 | |
| 468 #else | |
| 469 | |
| 470 size_t | |
| 471 ngx_fs_bsize(u_char *name) | |
| 472 { | |
| 473 return 512; | |
| 474 } | |
| 475 | |
| 476 #endif |