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168 | use common::sense; |
168 | use common::sense; |
169 | |
169 | |
170 | use base 'Exporter'; |
170 | use base 'Exporter'; |
171 | |
171 | |
172 | BEGIN { |
172 | BEGIN { |
173 | our $VERSION = '4.15'; |
173 | our $VERSION = '4.16'; |
174 | |
174 | |
175 | our @AIO_REQ = qw(aio_sendfile aio_seek aio_read aio_write aio_open aio_close |
175 | our @AIO_REQ = qw(aio_sendfile aio_seek aio_read aio_write aio_open aio_close |
176 | aio_stat aio_lstat aio_unlink aio_rmdir aio_readdir aio_readdirx |
176 | aio_stat aio_lstat aio_unlink aio_rmdir aio_readdir aio_readdirx |
177 | aio_scandir aio_symlink aio_readlink aio_realpath aio_sync |
177 | aio_scandir aio_symlink aio_readlink aio_realpath aio_sync |
178 | aio_fsync aio_syncfs aio_fdatasync aio_sync_file_range aio_fallocate |
178 | aio_fsync aio_syncfs aio_fdatasync aio_sync_file_range aio_allocate |
179 | aio_pathsync aio_readahead aio_fiemap |
179 | aio_pathsync aio_readahead aio_fiemap |
180 | aio_rename aio_link aio_move aio_copy aio_group |
180 | aio_rename aio_link aio_move aio_copy aio_group |
181 | aio_nop aio_mknod aio_load aio_rmtree aio_mkdir aio_chown |
181 | aio_nop aio_mknod aio_load aio_rmtree aio_mkdir aio_chown |
182 | aio_chmod aio_utime aio_truncate |
182 | aio_chmod aio_utime aio_truncate |
183 | aio_msync aio_mtouch aio_mlock aio_mlockall |
183 | aio_msync aio_mtouch aio_mlock aio_mlockall |
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202 | |
202 | |
203 | =head1 FUNCTIONS |
203 | =head1 FUNCTIONS |
204 | |
204 | |
205 | =head2 QUICK OVERVIEW |
205 | =head2 QUICK OVERVIEW |
206 | |
206 | |
207 | This section simply lists the prototypes of the most important functions |
207 | This section simply lists the prototypes most of the functions for |
208 | for quick reference. See the following sections for function-by-function |
208 | quick reference. See the following sections for function-by-function |
209 | documentation. |
209 | documentation. |
210 | |
210 | |
211 | aio_wd $pathname, $callback->($wd) |
211 | aio_wd $pathname, $callback->($wd) |
212 | aio_open $pathname, $flags, $mode, $callback->($fh) |
212 | aio_open $pathname, $flags, $mode, $callback->($fh) |
213 | aio_close $fh, $callback->($status) |
213 | aio_close $fh, $callback->($status) |
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222 | aio_utime $fh_or_path, $atime, $mtime, $callback->($status) |
222 | aio_utime $fh_or_path, $atime, $mtime, $callback->($status) |
223 | aio_chown $fh_or_path, $uid, $gid, $callback->($status) |
223 | aio_chown $fh_or_path, $uid, $gid, $callback->($status) |
224 | aio_chmod $fh_or_path, $mode, $callback->($status) |
224 | aio_chmod $fh_or_path, $mode, $callback->($status) |
225 | aio_truncate $fh_or_path, $offset, $callback->($status) |
225 | aio_truncate $fh_or_path, $offset, $callback->($status) |
226 | aio_allocate $fh, $mode, $offset, $len, $callback->($status) |
226 | aio_allocate $fh, $mode, $offset, $len, $callback->($status) |
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|
227 | aio_fiemap $fh, $start, $length, $flags, $count, $cb->(\@extents) |
227 | aio_unlink $pathname, $callback->($status) |
228 | aio_unlink $pathname, $callback->($status) |
228 | aio_mknod $pathname, $mode, $dev, $callback->($status) |
229 | aio_mknod $pathname, $mode, $dev, $callback->($status) |
229 | aio_link $srcpath, $dstpath, $callback->($status) |
230 | aio_link $srcpath, $dstpath, $callback->($status) |
230 | aio_symlink $srcpath, $dstpath, $callback->($status) |
231 | aio_symlink $srcpath, $dstpath, $callback->($status) |
231 | aio_readlink $pathname, $callback->($link) |
232 | aio_readlink $pathname, $callback->($link) |
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361 | |
362 | |
362 | |
363 | |
363 | =item aio_open $pathname, $flags, $mode, $callback->($fh) |
364 | =item aio_open $pathname, $flags, $mode, $callback->($fh) |
364 | |
365 | |
365 | Asynchronously open or create a file and call the callback with a newly |
366 | Asynchronously open or create a file and call the callback with a newly |
366 | created filehandle for the file. |
367 | created filehandle for the file (or C<undef> in case of an error). |
367 | |
368 | |
368 | The pathname passed to C<aio_open> must be absolute. See API NOTES, above, |
369 | The pathname passed to C<aio_open> must be absolute. See API NOTES, above, |
369 | for an explanation. |
370 | for an explanation. |
370 | |
371 | |
371 | The C<$flags> argument is a bitmask. See the C<Fcntl> module for a |
372 | The C<$flags> argument is a bitmask. See the C<Fcntl> module for a |
… | |
… | |
602 | namemax => 255, |
603 | namemax => 255, |
603 | frsize => 1024, |
604 | frsize => 1024, |
604 | fsid => 1810 |
605 | fsid => 1810 |
605 | } |
606 | } |
606 | |
607 | |
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|
608 | Here is a (likely partial) list of fsid values used by Linux - it is safe |
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|
609 | to hardcode these when the $^O is C<linux>: |
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610 | |
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611 | 0x0000adf5 adfs |
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612 | 0x0000adff affs |
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613 | 0x5346414f afs |
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614 | 0x09041934 anon-inode filesystem |
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|
615 | 0x00000187 autofs |
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|
616 | 0x42465331 befs |
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|
617 | 0x1badface bfs |
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|
618 | 0x42494e4d binfmt_misc |
|
|
619 | 0x9123683e btrfs |
|
|
620 | 0x0027e0eb cgroupfs |
|
|
621 | 0xff534d42 cifs |
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|
622 | 0x73757245 coda |
|
|
623 | 0x012ff7b7 coh |
|
|
624 | 0x28cd3d45 cramfs |
|
|
625 | 0x453dcd28 cramfs-wend (wrong endianness) |
|
|
626 | 0x64626720 debugfs |
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|
627 | 0x00001373 devfs |
|
|
628 | 0x00001cd1 devpts |
|
|
629 | 0x0000f15f ecryptfs |
|
|
630 | 0x00414a53 efs |
|
|
631 | 0x0000137d ext |
|
|
632 | 0x0000ef53 ext2/ext3 |
|
|
633 | 0x0000ef51 ext2 |
|
|
634 | 0x00004006 fat |
|
|
635 | 0x65735546 fuseblk |
|
|
636 | 0x65735543 fusectl |
|
|
637 | 0x0bad1dea futexfs |
|
|
638 | 0x01161970 gfs2 |
|
|
639 | 0x47504653 gpfs |
|
|
640 | 0x00004244 hfs |
|
|
641 | 0xf995e849 hpfs |
|
|
642 | 0x958458f6 hugetlbfs |
|
|
643 | 0x2bad1dea inotifyfs |
|
|
644 | 0x00009660 isofs |
|
|
645 | 0x000072b6 jffs2 |
|
|
646 | 0x3153464a jfs |
|
|
647 | 0x6b414653 k-afs |
|
|
648 | 0x0bd00bd0 lustre |
|
|
649 | 0x0000137f minix |
|
|
650 | 0x0000138f minix 30 char names |
|
|
651 | 0x00002468 minix v2 |
|
|
652 | 0x00002478 minix v2 30 char names |
|
|
653 | 0x00004d5a minix v3 |
|
|
654 | 0x19800202 mqueue |
|
|
655 | 0x00004d44 msdos |
|
|
656 | 0x0000564c novell |
|
|
657 | 0x00006969 nfs |
|
|
658 | 0x6e667364 nfsd |
|
|
659 | 0x00003434 nilfs |
|
|
660 | 0x5346544e ntfs |
|
|
661 | 0x00009fa1 openprom |
|
|
662 | 0x7461636F ocfs2 |
|
|
663 | 0x00009fa0 proc |
|
|
664 | 0x6165676c pstorefs |
|
|
665 | 0x0000002f qnx4 |
|
|
666 | 0x858458f6 ramfs |
|
|
667 | 0x52654973 reiserfs |
|
|
668 | 0x00007275 romfs |
|
|
669 | 0x67596969 rpc_pipefs |
|
|
670 | 0x73636673 securityfs |
|
|
671 | 0xf97cff8c selinux |
|
|
672 | 0x0000517b smb |
|
|
673 | 0x534f434b sockfs |
|
|
674 | 0x73717368 squashfs |
|
|
675 | 0x62656572 sysfs |
|
|
676 | 0x012ff7b6 sysv2 |
|
|
677 | 0x012ff7b5 sysv4 |
|
|
678 | 0x01021994 tmpfs |
|
|
679 | 0x15013346 udf |
|
|
680 | 0x00011954 ufs |
|
|
681 | 0x54190100 ufs byteswapped |
|
|
682 | 0x00009fa2 usbdevfs |
|
|
683 | 0x01021997 v9fs |
|
|
684 | 0xa501fcf5 vxfs |
|
|
685 | 0xabba1974 xenfs |
|
|
686 | 0x012ff7b4 xenix |
|
|
687 | 0x58465342 xfs |
|
|
688 | 0x012fd16d xia |
607 | |
689 | |
608 | =item aio_utime $fh_or_path, $atime, $mtime, $callback->($status) |
690 | =item aio_utime $fh_or_path, $atime, $mtime, $callback->($status) |
609 | |
691 | |
610 | Works like perl's C<utime> function (including the special case of $atime |
692 | Works like perl's C<utime> function (including the special case of $atime |
611 | and $mtime being undef). Fractional times are supported if the underlying |
693 | and $mtime being undef). Fractional times are supported if the underlying |
… | |
… | |
1276 | |
1358 | |
1277 | aio_mlockall IO::AIO::MCL_FUTURE; |
1359 | aio_mlockall IO::AIO::MCL_FUTURE; |
1278 | |
1360 | |
1279 | =item aio_fiemap $fh, $start, $length, $flags, $count, $cb->(\@extents) |
1361 | =item aio_fiemap $fh, $start, $length, $flags, $count, $cb->(\@extents) |
1280 | |
1362 | |
1281 | Queries the extents of the given file (by calling the Linux FIEMAP ioctl, |
1363 | Queries the extents of the given file (by calling the Linux C<FIEMAP> |
1282 | see L<http://cvs.schmorp.de/IO-AIO/doc/fiemap.txt> for details). If the |
1364 | ioctl, see L<http://cvs.schmorp.de/IO-AIO/doc/fiemap.txt> for details). If |
1283 | C<ioctl> is not available on your OS, then this rquiest will fail with |
1365 | the ioctl is not available on your OS, then this request will fail with |
1284 | C<ENOSYS>. |
1366 | C<ENOSYS>. |
1285 | |
1367 | |
1286 | C<$start> is the starting offset to query extents for, C<$length> is the |
1368 | C<$start> is the starting offset to query extents for, C<$length> is the |
1287 | size of the range to query - if it is C<undef>, then the whole file will |
1369 | size of the range to query - if it is C<undef>, then the whole file will |
1288 | be queried. |
1370 | be queried. |
… | |
… | |
1291 | C<IO::AIO::FIEMAP_FLAG_XATTR> - C<IO::AIO::FIEMAP_FLAGS_COMPAT> is also |
1373 | C<IO::AIO::FIEMAP_FLAG_XATTR> - C<IO::AIO::FIEMAP_FLAGS_COMPAT> is also |
1292 | exported), and is normally C<0> or C<IO::AIO::FIEMAP_FLAG_SYNC> to query |
1374 | exported), and is normally C<0> or C<IO::AIO::FIEMAP_FLAG_SYNC> to query |
1293 | the data portion. |
1375 | the data portion. |
1294 | |
1376 | |
1295 | C<$count> is the maximum number of extent records to return. If it is |
1377 | C<$count> is the maximum number of extent records to return. If it is |
1296 | C<undef>, then IO::AIO queries all extents of the file. As a very special |
1378 | C<undef>, then IO::AIO queries all extents of the range. As a very special |
1297 | case, if it is C<0>, then the callback receives the number of extents |
1379 | case, if it is C<0>, then the callback receives the number of extents |
1298 | instead of the extents themselves. |
1380 | instead of the extents themselves (which is unreliable, see below). |
1299 | |
1381 | |
1300 | If an error occurs, the callback receives no arguments. The special |
1382 | If an error occurs, the callback receives no arguments. The special |
1301 | C<errno> value C<IO::AIO::EBADR> is available to test for flag errors. |
1383 | C<errno> value C<IO::AIO::EBADR> is available to test for flag errors. |
1302 | |
1384 | |
1303 | Otherwise, the callback receives an array reference with extent |
1385 | Otherwise, the callback receives an array reference with extent |
… | |
… | |
1305 | following members: |
1387 | following members: |
1306 | |
1388 | |
1307 | [$logical, $physical, $length, $flags] |
1389 | [$logical, $physical, $length, $flags] |
1308 | |
1390 | |
1309 | Flags is any combination of the following flag values (typically either C<0> |
1391 | Flags is any combination of the following flag values (typically either C<0> |
1310 | or C<IO::AIO::FIEMAP_EXTENT_LAST>): |
1392 | or C<IO::AIO::FIEMAP_EXTENT_LAST> (1)): |
1311 | |
1393 | |
1312 | C<IO::AIO::FIEMAP_EXTENT_LAST>, C<IO::AIO::FIEMAP_EXTENT_UNKNOWN>, |
1394 | C<IO::AIO::FIEMAP_EXTENT_LAST>, C<IO::AIO::FIEMAP_EXTENT_UNKNOWN>, |
1313 | C<IO::AIO::FIEMAP_EXTENT_DELALLOC>, C<IO::AIO::FIEMAP_EXTENT_ENCODED>, |
1395 | C<IO::AIO::FIEMAP_EXTENT_DELALLOC>, C<IO::AIO::FIEMAP_EXTENT_ENCODED>, |
1314 | C<IO::AIO::FIEMAP_EXTENT_DATA_ENCRYPTED>, C<IO::AIO::FIEMAP_EXTENT_NOT_ALIGNED>, |
1396 | C<IO::AIO::FIEMAP_EXTENT_DATA_ENCRYPTED>, C<IO::AIO::FIEMAP_EXTENT_NOT_ALIGNED>, |
1315 | C<IO::AIO::FIEMAP_EXTENT_DATA_INLINE>, C<IO::AIO::FIEMAP_EXTENT_DATA_TAIL>, |
1397 | C<IO::AIO::FIEMAP_EXTENT_DATA_INLINE>, C<IO::AIO::FIEMAP_EXTENT_DATA_TAIL>, |
1316 | C<IO::AIO::FIEMAP_EXTENT_UNWRITTEN>, C<IO::AIO::FIEMAP_EXTENT_MERGED> or |
1398 | C<IO::AIO::FIEMAP_EXTENT_UNWRITTEN>, C<IO::AIO::FIEMAP_EXTENT_MERGED> or |
1317 | C<IO::AIO::FIEMAP_EXTENT_SHARED>. |
1399 | C<IO::AIO::FIEMAP_EXTENT_SHARED>. |
|
|
1400 | |
|
|
1401 | At the time of this writing (Linux 3.2), this requets is unreliable unless |
|
|
1402 | C<$count> is C<undef>, as the kernel has all sorts of bugs preventing |
|
|
1403 | it to return all extents of a range for files with large number of |
|
|
1404 | extents. The code works around all these issues if C<$count> is undef. |
1318 | |
1405 | |
1319 | =item aio_group $callback->(...) |
1406 | =item aio_group $callback->(...) |
1320 | |
1407 | |
1321 | This is a very special aio request: Instead of doing something, it is a |
1408 | This is a very special aio request: Instead of doing something, it is a |
1322 | container for other aio requests, which is useful if you want to bundle |
1409 | container for other aio requests, which is useful if you want to bundle |