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/cvs/libeio/eio.c
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Comparing libeio/eio.c (file contents):
Revision 1.46 by root, Sat Jan 2 12:58:37 2010 UTC vs.
Revision 1.49 by root, Sat Jan 2 14:24:32 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 /* BSDs */
976#ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */
977 || errno == ENOTSUP
978#endif
979 || errno == EOPNOTSUPP /* BSDs */
975#if __solaris 980#if __solaris
976 || errno == EAFNOSUPPORT || errno == EPROTOTYPE 981 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
977#endif 982#endif
978 ) 983 )
979 ) 984 )
… …
1373 } 1378 }
1374 } 1379 }
1375} 1380}
1376 1381
1377#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) 1382#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO)
1378# undef msync
1379# define msync(a,b,c) ((errno = ENOSYS), -1) 1383# define eio__msync(a,b,c) ((errno = ENOSYS), -1)
1384#else
1385
1386int
1387eio__msync (void *mem, size_t len, int flags)
1388{
1389 if (EIO_MS_ASYNC != MS_SYNC
1390 || EIO_MS_INVALIDATE != MS_INVALIDATE
1391 || EIO_MS_SYNC != MS_SYNC)
1392 {
1393 flags = 0
1394 | (flags & EIO_MS_ASYNC ? MS_ASYNC : 0)
1395 | (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0)
1396 | (flags & EIO_MS_SYNC ? MS_SYNC : 0);
1397 }
1398
1399 return msync (mem, len, flags);
1400}
1401
1380#endif 1402#endif
1381 1403
1382int 1404int
1383eio__mtouch (void *mem, size_t len, int flags) 1405eio__mtouch (void *mem, size_t len, int flags)
1384{ 1406{
… …
1395 1417
1396 /* round down to start of page, although this is probably useless */ 1418 /* round down to start of page, although this is probably useless */
1397 addr &= ~(page - 1); /* assume page size is always a power of two */ 1419 addr &= ~(page - 1); /* assume page size is always a power of two */
1398 1420
1399 if (addr < end) 1421 if (addr < end)
1400 if (flags) /* modify */ 1422 if (flags & EIO_MT_MODIFY) /* modify */
1401 do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len); 1423 do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len);
1402 else 1424 else
1403 do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len); 1425 do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len);
1404 1426
1405 return 0; 1427 return 0;
… …
1577 req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break; 1599 req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break;
1578 1600
1579 case EIO_SYNC: req->result = 0; sync (); break; 1601 case EIO_SYNC: req->result = 0; sync (); break;
1580 case EIO_FSYNC: req->result = fsync (req->int1); break; 1602 case EIO_FSYNC: req->result = fsync (req->int1); break;
1581 case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; 1603 case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
1582 case EIO_MSYNC: req->result = msync (req->ptr2, req->size, req->int1); break; 1604 case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;
1583 case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break; 1605 case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break;
1584 case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break; 1606 case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
1585 1607
1586 case EIO_READDIR: eio__scandir (req, self); break; 1608 case EIO_READDIR: eio__scandir (req, self); break;
1587 1609

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