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/cvs/libeio/eio.c
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Comparing libeio/eio.c (file contents):
Revision 1.47 by root, Sat Jan 2 13:02:20 2010 UTC vs.
Revision 1.48 by root, Sat Jan 2 14:11:32 2010 UTC

1/* 1/*
2 * libeio implementation 2 * libeio implementation
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libeio@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libeio@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
970 errno = ENOSYS; 970 errno = ENOSYS;
971#endif 971#endif
972 972
973 if (res < 0 973 if (res < 0
974 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK 974 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
975 || errno == ENOTSUP || errno == EOPNOTSUPP /* BSDs */
975#if __solaris 976#if __solaris
976 || errno == EAFNOSUPPORT || errno == EPROTOTYPE 977 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
977#endif 978#endif
978 || errno == ENOTSUP || errno == EOPNOTSUPP
979 ) 979 )
980 ) 980 )
981 { 981 {
982 /* emulate sendfile. this is a major pain in the ass */ 982 /* emulate sendfile. this is a major pain in the ass */
983 dBUF; 983 dBUF;
… …
1374 } 1374 }
1375 } 1375 }
1376} 1376}
1377 1377
1378#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) 1378#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO)
1379# undef msync
1380# define msync(a,b,c) ((errno = ENOSYS), -1) 1379# define eio__msync(a,b,c) ((errno = ENOSYS), -1)
1380#else
1381
1382int
1383eio__msync (void *mem, size_t len, int flags)
1384{
1385 if (EIO_MS_ASYNC != MS_SYNC
1386 || EIO_MS_INVALIDATE != MS_INVALIDATE
1387 || EIO_MS_SYNC != MS_SYNC)
1388 {
1389 flags = 0
1390 | (flags & EIO_MS_ASYNC ? MS_ASYNC : 0)
1391 | (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0)
1392 | (flags & EIO_MS_SYNC ? MS_SYNC : 0);
1393 }
1394
1395 return msync (mem, len, flags);
1396}
1397
1381#endif 1398#endif
1382 1399
1383int 1400int
1384eio__mtouch (void *mem, size_t len, int flags) 1401eio__mtouch (void *mem, size_t len, int flags)
1385{ 1402{
… …
1396 1413
1397 /* round down to start of page, although this is probably useless */ 1414 /* round down to start of page, although this is probably useless */
1398 addr &= ~(page - 1); /* assume page size is always a power of two */ 1415 addr &= ~(page - 1); /* assume page size is always a power of two */
1399 1416
1400 if (addr < end) 1417 if (addr < end)
1401 if (flags) /* modify */ 1418 if (flags & EIO_MT_MODIFY) /* modify */
1402 do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len); 1419 do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len);
1403 else 1420 else
1404 do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len); 1421 do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len);
1405 1422
1406 return 0; 1423 return 0;
… …
1578 req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break; 1595 req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break;
1579 1596
1580 case EIO_SYNC: req->result = 0; sync (); break; 1597 case EIO_SYNC: req->result = 0; sync (); break;
1581 case EIO_FSYNC: req->result = fsync (req->int1); break; 1598 case EIO_FSYNC: req->result = fsync (req->int1); break;
1582 case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; 1599 case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
1583 case EIO_MSYNC: req->result = msync (req->ptr2, req->size, req->int1); break; 1600 case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;
1584 case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break; 1601 case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break;
1585 case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break; 1602 case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
1586 1603
1587 case EIO_READDIR: eio__scandir (req, self); break; 1604 case EIO_READDIR: eio__scandir (req, self); break;
1588 1605

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