diff options
Diffstat (limited to 'eio.h')
| -rw-r--r-- | eio.h | 68 |
1 files changed, 54 insertions, 14 deletions
@@ -1,7 +1,7 @@ /* * libeio API header * - * Copyright (c) 2007,2008 Marc Alexander Lehmann <libeio@schmorp.de> + * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libeio@schmorp.de> * All rights reserved. * * Redistribution and use in source and binary forms, with or without modifica- @@ -47,7 +47,8 @@ extern "C" { #include <stddef.h> #include <sys/types.h> -typedef struct eio_req eio_req; +typedef struct eio_req eio_req; +typedef struct eio_dirent eio_dirent; typedef int (*eio_cb)(eio_req *req); @@ -59,6 +60,54 @@ typedef int (*eio_cb)(eio_req *req); # define EIO_STRUCT_STAT struct stat #endif +/* for readdir */ + +/* eio_readdir flags */ +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 */ + EIO_READDIR_FOUND_UNKNOWN = 0x80, /* set by eio_readdir when *_ARRAY was set and any TYPE=UNKNOWN's were found */ + + EIO_READDIR_CUSTOM1 = 0x100, /* for use by apps */ + EIO_READDIR_CUSTOM2 = 0x200 /* for use by apps */ +}; + +/* using "typical" values in the hope that the compiler will do something sensible */ +enum eio_dtype { + EIO_DT_UNKNOWN = 0, + EIO_DT_FIFO = 1, + EIO_DT_CHR = 2, + EIO_DT_DIR = 4, + EIO_DT_BLK = 6, + EIO_DT_REG = 8, + EIO_DT_LNK = 10, + EIO_DT_SOCK = 12, + EIO_DT_WHT = 14, + EIO_DT_MAX = 15 /* highest DT_VALUE ever, hopefully */ +}; + +struct eio_dirent { + char *name; + ino_t inode; + unsigned short namelen; + unsigned char type; + unsigned char score; /* internal use */ + /* 0-4 bytes padding */ +}; + +/* eio_sync_file_range flags */ + +enum { + EIO_SYNC_FILE_RANGE_WAIT_BEFORE = 1, + EIO_SYNC_FILE_RANGE_WRITE = 2, + EIO_SYNC_FILE_RANGE_WAIT_AFTER = 4 +}; + +typedef double eio_tstamp; /* feel free to use double in your code directly */ + +/* the eio request structure */ + enum { EIO_CUSTOM, EIO_OPEN, EIO_CLOSE, EIO_DUP2, @@ -78,18 +127,9 @@ enum { EIO_BUSY }; -/* eio_sync_file_range flags */ - -enum { - EIO_SYNC_FILE_RANGE_WAIT_BEFORE = 1, - EIO_SYNC_FILE_RANGE_WRITE = 2, - EIO_SYNC_FILE_RANGE_WAIT_AFTER = 4 -}; - -typedef double eio_tstamp; /* feel free to use double in your code directly */ - /* eio request structure */ /* this structure is mostly read-only */ +/* when initialising it, all members must be zero-initialised */ struct eio_req { eio_req volatile *next; /* private ETP */ @@ -103,7 +143,7 @@ struct eio_req eio_tstamp nv2; /* utime, futime: mtime */ int type; /* EIO_xxx constant ETP */ - int int1; /* all applicable requests: file descriptor; sendfile: output fd; open, msync: flags */ + int int1; /* all applicable requests: file descriptor; sendfile: output fd; open, msync, 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 */ @@ -192,7 +232,7 @@ eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data); eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data); eio_req *eio_mkdir (const char *path, mode_t mode, int pri, eio_cb cb, void *data); -eio_req *eio_readdir (const char *path, int pri, eio_cb cb, void *data); /* result=ptr2 allocated dynamically */ +eio_req *eio_readdir (const char *path, int flags, int pri, eio_cb cb, void *data); /* result=ptr2 allocated dynamically */ eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data); eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data); eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data); /* result=ptr2 allocated dynamically */ |