… | |
… | |
165 | fiemap (eio_req *req) |
165 | fiemap (eio_req *req) |
166 | { |
166 | { |
167 | req->result = -1; |
167 | req->result = -1; |
168 | |
168 | |
169 | #if HAVE_FIEMAP |
169 | #if HAVE_FIEMAP |
|
|
170 | /* assume some c99 */ |
|
|
171 | struct fiemap *fiemap = 0; |
|
|
172 | size_t end_offset; |
170 | int count = req->int3; |
173 | int count = req->int3; |
171 | |
174 | |
172 | /* heuristic: first try with 64 extents if we don't know how many, */ |
175 | req->flags |= EIO_FLAG_PTR1_FREE; |
173 | /* as most files have (hopefully) fewer than this many extents */ |
176 | |
174 | /* in fact, most should have <= 2, so maybe the 72 below is probably overkill */ |
177 | /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */ |
|
|
178 | /* increase in 3.5kb steps */ |
175 | if (count < 0) |
179 | if (count < 0) |
176 | count = 72; /* for what it's worth, 72 extents fit nicely into 4kb */ |
180 | count = 8; |
|
|
181 | |
|
|
182 | fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count); |
|
|
183 | errno = ENOMEM; |
|
|
184 | if (!fiemap) |
|
|
185 | return; |
|
|
186 | |
|
|
187 | req->ptr1 = fiemap; |
|
|
188 | |
|
|
189 | fiemap->fm_start = req->offs; |
|
|
190 | fiemap->fm_length = req->size; |
|
|
191 | fiemap->fm_flags = req->int2; |
|
|
192 | fiemap->fm_extent_count = count; |
|
|
193 | |
|
|
194 | if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0) |
|
|
195 | return; |
|
|
196 | |
|
|
197 | if (req->int3 >= 0 /* not autosizing */ |
|
|
198 | || !fiemap->fm_mapped_extents /* no more extents */ |
|
|
199 | || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */) |
|
|
200 | goto done; |
|
|
201 | |
|
|
202 | /* else we have to loop - |
|
|
203 | * it would be tempting (atcually I tried that first) to just query the |
|
|
204 | * number of extents needed, but linux often feels like not returning all |
|
|
205 | * extents, without telling us it left any out. this complicates |
|
|
206 | * this quite a bit. |
|
|
207 | */ |
|
|
208 | |
|
|
209 | end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start); |
177 | |
210 | |
178 | for (;;) |
211 | for (;;) |
179 | { |
212 | { |
|
|
213 | /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */ |
|
|
214 | char scratch[3072]; |
|
|
215 | struct fiemap *incmap = (struct fiemap *)scratch; |
|
|
216 | |
|
|
217 | incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical |
|
|
218 | + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length; |
|
|
219 | incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start); |
|
|
220 | incmap->fm_flags = fiemap->fm_flags; |
|
|
221 | incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent); |
|
|
222 | |
|
|
223 | if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0) |
|
|
224 | return; |
|
|
225 | |
|
|
226 | count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents; |
180 | struct fiemap *fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count); |
227 | fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count); |
181 | errno = ENOMEM; |
228 | errno = ENOMEM; |
182 | if (!fiemap) |
229 | if (!fiemap) |
183 | return; |
230 | return; |
184 | |
231 | |
185 | req->ptr1 = fiemap; |
232 | req->ptr1 = fiemap; |
186 | req->flags |= EIO_FLAG_PTR1_FREE; |
|
|
187 | |
233 | |
188 | fiemap->fm_start = req->offs; |
234 | for (count = 0; count < incmap->fm_mapped_extents; ++count) |
189 | fiemap->fm_length = req->size; |
235 | { |
190 | fiemap->fm_flags = req->int2; |
236 | struct fiemap_extent *e = incmap->fm_extents + count; |
191 | fiemap->fm_extent_count = count; |
|
|
192 | |
237 | |
193 | if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap)) |
238 | if (e->fe_logical + e->fe_length >= end_offset) |
194 | return; |
239 | goto done; |
195 | |
240 | |
196 | if (req->int3 >= 0) |
241 | fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e; |
197 | break; /* when not autosizing we are done */ |
|
|
198 | |
242 | |
199 | if (fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST) |
243 | if (e->fe_flags & FIEMAP_EXTENT_LAST) |
200 | break; /* autosizing successful, we are done */ |
244 | goto done; |
201 | |
245 | |
202 | fiemap->fm_flags = req->int2; |
246 | } |
203 | fiemap->fm_extent_count = 0; |
|
|
204 | |
|
|
205 | if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap)) |
|
|
206 | return; |
|
|
207 | |
|
|
208 | count = fiemap->fm_mapped_extents; |
|
|
209 | |
|
|
210 | free (fiemap); |
|
|
211 | } |
247 | } |
212 | |
248 | |
|
|
249 | done: |
213 | req->result = 0; |
250 | req->result = 0; |
214 | |
251 | |
215 | #else |
252 | #else |
216 | errno = ENOSYS; |
253 | errno = ENOSYS; |
217 | #endif |
254 | #endif |
… | |
… | |
983 | const_eio (SYNC_FILE_RANGE_WAIT_BEFORE) |
1020 | const_eio (SYNC_FILE_RANGE_WAIT_BEFORE) |
984 | const_eio (SYNC_FILE_RANGE_WRITE) |
1021 | const_eio (SYNC_FILE_RANGE_WRITE) |
985 | const_eio (SYNC_FILE_RANGE_WAIT_AFTER) |
1022 | const_eio (SYNC_FILE_RANGE_WAIT_AFTER) |
986 | |
1023 | |
987 | const_eio (FALLOC_FL_KEEP_SIZE) |
1024 | const_eio (FALLOC_FL_KEEP_SIZE) |
|
|
1025 | const_eio (FALLOC_FL_PUNCH_HOLE) |
988 | |
1026 | |
989 | const_eio (READDIR_DENTS) |
1027 | const_eio (READDIR_DENTS) |
990 | const_eio (READDIR_DIRS_FIRST) |
1028 | const_eio (READDIR_DIRS_FIRST) |
991 | const_eio (READDIR_STAT_ORDER) |
1029 | const_eio (READDIR_STAT_ORDER) |
992 | const_eio (READDIR_FOUND_UNKNOWN) |
1030 | const_eio (READDIR_FOUND_UNKNOWN) |
… | |
… | |
1093 | aio_fsync = EIO_FSYNC |
1131 | aio_fsync = EIO_FSYNC |
1094 | aio_fdatasync = EIO_FDATASYNC |
1132 | aio_fdatasync = EIO_FDATASYNC |
1095 | aio_syncfs = EIO_SYNCFS |
1133 | aio_syncfs = EIO_SYNCFS |
1096 | PPCODE: |
1134 | PPCODE: |
1097 | { |
1135 | { |
1098 | int fd = s_fileno_croak (fh, 0); |
1136 | int fd = s_fileno_croak (fh, 0); |
1099 | dREQ; |
1137 | dREQ; |
1100 | |
1138 | |
1101 | req->type = ix; |
1139 | req->type = ix; |
1102 | req->sv1 = newSVsv (fh); |
1140 | req->sv1 = newSVsv (fh); |
1103 | req->int1 = fd; |
1141 | req->int1 = fd; |
… | |
… | |
1107 | |
1145 | |
1108 | void |
1146 | void |
1109 | aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef) |
1147 | aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef) |
1110 | PPCODE: |
1148 | PPCODE: |
1111 | { |
1149 | { |
1112 | int fd = s_fileno_croak (fh, 0); |
1150 | int fd = s_fileno_croak (fh, 0); |
1113 | dREQ; |
1151 | dREQ; |
1114 | |
1152 | |
1115 | req->type = EIO_SYNC_FILE_RANGE; |
1153 | req->type = EIO_SYNC_FILE_RANGE; |
1116 | req->sv1 = newSVsv (fh); |
1154 | req->sv1 = newSVsv (fh); |
1117 | req->int1 = fd; |
1155 | req->int1 = fd; |
… | |
… | |
1121 | |
1159 | |
1122 | REQ_SEND; |
1160 | REQ_SEND; |
1123 | } |
1161 | } |
1124 | |
1162 | |
1125 | void |
1163 | void |
1126 | aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef) |
1164 | aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef) |
1127 | PPCODE: |
1165 | PPCODE: |
1128 | { |
1166 | { |
1129 | int fd = s_fileno_croak (fh, 0); |
1167 | int fd = s_fileno_croak (fh, 0); |
1130 | dREQ; |
1168 | dREQ; |
1131 | |
1169 | |
1132 | req->type = EIO_FALLOCATE; |
1170 | req->type = EIO_FALLOCATE; |
1133 | req->sv1 = newSVsv (fh); |
1171 | req->sv1 = newSVsv (fh); |
1134 | req->int1 = fd; |
1172 | req->int1 = fd; |
… | |
… | |
1142 | void |
1180 | void |
1143 | aio_close (SV *fh, SV *callback=&PL_sv_undef) |
1181 | aio_close (SV *fh, SV *callback=&PL_sv_undef) |
1144 | PPCODE: |
1182 | PPCODE: |
1145 | { |
1183 | { |
1146 | static int close_fd = -1; /* dummy fd to close fds via dup2 */ |
1184 | static int close_fd = -1; /* dummy fd to close fds via dup2 */ |
1147 | int fd = s_fileno_croak (fh, 0); |
1185 | int fd = s_fileno_croak (fh, 0); |
1148 | dREQ; |
1186 | dREQ; |
1149 | |
1187 | |
1150 | if (expect_false (close_fd < 0)) |
1188 | if (expect_false (close_fd < 0)) |
1151 | { |
1189 | { |
1152 | int pipefd [2]; |
1190 | int pipefd [2]; |
… | |
… | |
1215 | } |
1253 | } |
1216 | else |
1254 | else |
1217 | { |
1255 | { |
1218 | /* read: check type and grow scalar as necessary */ |
1256 | /* read: check type and grow scalar as necessary */ |
1219 | SvUPGRADE (data, SVt_PV); |
1257 | SvUPGRADE (data, SVt_PV); |
|
|
1258 | if (SvLEN (data) >= SvCUR (data)) |
1220 | svptr = SvGROW (data, len + dataoffset + 1); |
1259 | svptr = SvGROW (data, len + dataoffset + 1); |
|
|
1260 | else if (SvCUR (data) < len + dataoffset) |
|
|
1261 | croak ("length + dataoffset outside of scalar, and cannot grow"); |
1221 | } |
1262 | } |
1222 | |
1263 | |
1223 | { |
1264 | { |
1224 | dREQ; |
1265 | dREQ; |
1225 | |
1266 | |
… | |
… | |
1259 | |
1300 | |
1260 | void |
1301 | void |
1261 | aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef) |
1302 | aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef) |
1262 | PPCODE: |
1303 | PPCODE: |
1263 | { |
1304 | { |
1264 | int ifd = s_fileno_croak (in_fh , 0); |
1305 | int ifd = s_fileno_croak (in_fh , 0); |
1265 | int ofd = s_fileno_croak (out_fh, 1); |
1306 | int ofd = s_fileno_croak (out_fh, 1); |
1266 | dREQ; |
1307 | dREQ; |
1267 | |
1308 | |
1268 | req->type = EIO_SENDFILE; |
1309 | req->type = EIO_SENDFILE; |
1269 | req->sv1 = newSVsv (out_fh); |
1310 | req->sv1 = newSVsv (out_fh); |
1270 | req->int1 = ofd; |
1311 | req->int1 = ofd; |
… | |
… | |
1278 | |
1319 | |
1279 | void |
1320 | void |
1280 | aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef) |
1321 | aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef) |
1281 | PPCODE: |
1322 | PPCODE: |
1282 | { |
1323 | { |
1283 | int fd = s_fileno_croak (fh, 0); |
1324 | int fd = s_fileno_croak (fh, 0); |
1284 | dREQ; |
1325 | dREQ; |
1285 | |
1326 | |
1286 | req->type = EIO_READAHEAD; |
1327 | req->type = EIO_READAHEAD; |
1287 | req->sv1 = newSVsv (fh); |
1328 | req->sv1 = newSVsv (fh); |
1288 | req->int1 = fd; |
1329 | req->int1 = fd; |
… | |
… | |
1528 | |
1569 | |
1529 | void |
1570 | void |
1530 | aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef) |
1571 | aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef) |
1531 | PPCODE: |
1572 | PPCODE: |
1532 | { |
1573 | { |
1533 | int fd = s_fileno_croak (fh, 0); |
1574 | int fd = s_fileno_croak (fh, 0); |
1534 | dREQ; |
1575 | dREQ; |
1535 | |
1576 | |
1536 | req->type = EIO_CUSTOM; |
1577 | req->type = EIO_CUSTOM; |
1537 | req->sv1 = newSVsv (fh); |
1578 | req->sv1 = newSVsv (fh); |
1538 | req->int1 = fd; |
1579 | req->int1 = fd; |
… | |
… | |
1758 | int |
1799 | int |
1759 | munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef) |
1800 | munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef) |
1760 | CODE: |
1801 | CODE: |
1761 | { |
1802 | { |
1762 | STRLEN svlen; |
1803 | STRLEN svlen; |
1763 | void *addr = SvPVbyte (scalar, svlen); |
1804 | void *addr = SvPVbyte (scalar, svlen); |
1764 | size_t len = SvUV (length); |
1805 | size_t len = SvUV (length); |
1765 | |
1806 | |
1766 | if (offset < 0) |
1807 | if (offset < 0) |
1767 | offset += svlen; |
1808 | offset += svlen; |
1768 | |
1809 | |