diff options
Diffstat (limited to 'eio.h')
| -rw-r--r-- | eio.h | 52 |
1 files changed, 37 insertions, 15 deletions
@@ -67,7 +67,8 @@ typedef int (*eio_cb)(eio_req *req); /* for readdir */ /* eio_readdir flags */ -enum { +enum +{ EIO_READDIR_DENTS = 0x01, /* ptr2 contains eio_dirents, not just the (unsorted) names */ EIO_READDIR_DIRS_FIRST = 0x02, /* dirents gets sorted into a good stat() ing order to find directories first */ EIO_READDIR_STAT_ORDER = 0x04, /* dirents gets sorted into a good stat() ing order to quickly stat all files */ @@ -78,7 +79,8 @@ enum { }; /* using "typical" values in the hope that the compiler will do something sensible */ -enum eio_dtype { +enum eio_dtype +{ EIO_DT_UNKNOWN = 0, EIO_DT_FIFO = 1, EIO_DT_CHR = 2, @@ -98,7 +100,8 @@ enum eio_dtype { EIO_DT_MAX = 15 /* highest DT_VALUE ever, hopefully */ }; -struct eio_dirent { +struct eio_dirent +{ int nameofs; /* offset of null-terminated name string in (char *)req->ptr2 */ unsigned short namelen; /* size of filename without trailing 0 */ unsigned char type; /* one of EIO_DT_* */ @@ -107,7 +110,8 @@ struct eio_dirent { }; /* eio_msync flags */ -enum { +enum +{ EIO_MS_ASYNC = 1, EIO_MS_INVALIDATE = 2, EIO_MS_SYNC = 4 @@ -115,13 +119,15 @@ enum { /* eio_mtouch flags */ -enum { +enum +{ EIO_MT_MODIFY = 1 }; /* eio_sync_file_range flags */ -enum { +enum +{ EIO_SYNC_FILE_RANGE_WAIT_BEFORE = 1, EIO_SYNC_FILE_RANGE_WRITE = 2, EIO_SYNC_FILE_RANGE_WAIT_AFTER = 4 @@ -131,7 +137,8 @@ typedef double eio_tstamp; /* feel free to use double in your code directly */ /* the eio request structure */ -enum { +enum +{ EIO_CUSTOM, EIO_OPEN, EIO_CLOSE, EIO_DUP2, EIO_READ, EIO_WRITE, @@ -144,6 +151,7 @@ enum { EIO_CHOWN, EIO_FCHOWN, EIO_SYNC, EIO_FSYNC, EIO_FDATASYNC, EIO_MSYNC, EIO_MTOUCH, EIO_SYNC_FILE_RANGE, + EIO_MLOCK, EIO_MLOCKALL, EIO_UNLINK, EIO_RMDIR, EIO_MKDIR, EIO_RENAME, EIO_MKNOD, EIO_READDIR, EIO_LINK, EIO_SYMLINK, EIO_READLINK, @@ -151,6 +159,21 @@ enum { EIO_BUSY }; +/* mlockall constants */ +enum +{ + EIO_MCL_CURRENT = 1, + EIO_MCL_FUTURE = 2, +}; + +/* request priorities */ + +enum { + EIO_PRI_MIN = -4, + EIO_PRI_MAX = 4, + EIO_PRI_DEFAULT = 0, +}; + /* eio request structure */ /* this structure is mostly read-only */ /* when initialising it, all members must be zero-initialised */ @@ -160,14 +183,14 @@ struct eio_req ssize_t result; /* result of syscall, e.g. result = read (... */ off_t offs; /* read, write, truncate, readahead, sync_file_range: file offset */ - size_t size; /* read, write, readahead, sendfile, msync, sync_file_range: length */ + size_t size; /* read, write, readahead, sendfile, msync, mlock, sync_file_range: length */ void *ptr1; /* all applicable requests: pathname, old name; readdir: optional eio_dirents */ void *ptr2; /* all applicable requests: new name or memory buffer; readdir: name strings */ eio_tstamp nv1; /* utime, futime: atime; busy: sleep time */ eio_tstamp nv2; /* utime, futime: mtime */ int type; /* EIO_xxx constant ETP */ - int int1; /* all applicable requests: file descriptor; sendfile: output fd; open, msync, readdir: flags */ + 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: flags */ long int3; /* chown, fchown: gid; mknod: dev_t */ int errorno; /* errno value on syscall return */ @@ -185,7 +208,7 @@ struct eio_req eio_req *grp, *grp_prev, *grp_next, *grp_first; /* private */ }; -/* _private_ flags */ +/* _private_ request flags */ enum { EIO_FLAG_CANCELLED = 0x01, /* request was cancelled */ EIO_FLAG_PTR1_FREE = 0x02, /* need to free(ptr1) */ @@ -193,11 +216,8 @@ enum { EIO_FLAG_GROUPADD = 0x08 /* some request was added to the group */ }; -enum { - EIO_PRI_MIN = -4, - EIO_PRI_MAX = 4, - EIO_PRI_DEFAULT = 0, -}; +/* undocumented/unsupported/private helper */ +/*void eio_page_align (void **addr, size_t *length);*/ /* returns < 0 on error, errno set * need_poll, if non-zero, will be called when results are available @@ -238,6 +258,8 @@ eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data); eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data); eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data); eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data); +eio_req *eio_mlock (void *addr, size_t length, int pri, eio_cb cb, void *data); +eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data); eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, 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); |