--- libeio/eio.h 2011/09/27 12:36:19 1.49 +++ libeio/eio.h 2012/04/01 17:22:42 1.50 @@ -1,7 +1,7 @@ /* * libeio API header * - * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann + * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann * All rights reserved. * * Redistribution and use in source and binary forms, with or without modifica- @@ -183,7 +183,7 @@ EIO_WD_OPEN, EIO_WD_CLOSE, EIO_CLOSE, EIO_DUP2, - EIO_READ, EIO_WRITE, + EIO_SEEK, EIO_READ, EIO_WRITE, EIO_READAHEAD, EIO_SENDFILE, EIO_FSTAT, EIO_FSTATVFS, EIO_FTRUNCATE, EIO_FUTIME, EIO_FCHMOD, EIO_FCHOWN, @@ -212,11 +212,22 @@ EIO_REQ_TYPE_NUM }; +/* seek whence modes */ +/* these are guaranteed to hasve the traditional 0, 1, 2 values, */ +/* so you might as wlel use those */ +enum +{ + EIO_SEEK_SET = 0, + EIO_SEEK_CUR = 1, + EIO_SEEK_END = 2 +}; + + /* mlockall constants */ enum { EIO_MCL_CURRENT = 1, - EIO_MCL_FUTURE = 2, + EIO_MCL_FUTURE = 2 }; /* request priorities */ @@ -224,7 +235,7 @@ enum { EIO_PRI_MIN = -4, EIO_PRI_MAX = 4, - EIO_PRI_DEFAULT = 0, + EIO_PRI_DEFAULT = 0 }; /* eio request structure */ @@ -246,7 +257,7 @@ int type; /* EIO_xxx constant ETP */ int int1; /* all applicable requests: file descriptor; sendfile: output fd; open, msync, mlockall, readdir: flags */ - long int2; /* chown, fchown: uid; sendfile: input fd; open, chmod, mkdir, mknod: file mode, sync_file_range, fallocate: flags */ + long int2; /* chown, fchown: uid; sendfile: input fd; open, chmod, mkdir, mknod: file mode, seek: whence, sync_file_range, fallocate: flags */ long int3; /* chown, fchown: gid; rename, link: working directory of new name */ int errorno; /* errno value on syscall return */ @@ -328,6 +339,7 @@ eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data); eio_req *eio_close (int fd, int pri, eio_cb cb, void *data); eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data); +eio_req *eio_seek (int fd, off_t offset, int whence, int pri, eio_cb cb, void *data); eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data); eio_req *eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data); eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */