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/cvs/libeio/eio.h
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Comparing libeio/eio.h (file contents):
Revision 1.39 by root, Thu Jul 14 19:31:43 2011 UTC vs.
Revision 1.47 by root, Mon Sep 26 18:23:18 2011 UTC

… …
65# define EIO_STRUCT_STAT struct stat 65# define EIO_STRUCT_STAT struct stat
66# endif 66# endif
67#endif 67#endif
68 68
69#ifdef _WIN32 69#ifdef _WIN32
70typedef int eio_uid_t; 70 typedef int eio_uid_t;
71typedef int eio_gid_t; 71 typedef int eio_gid_t;
72 #ifdef __MINGW32__ /* no intptr_t */
73 typedef ssize_t eio_ssize_t;
74 #else
72typedef intptr_t eio_ssize_t; /* or SSIZE_T */ 75 typedef intptr_t eio_ssize_t; /* or SSIZE_T */
76 #endif
77 #if __GNUC__
78 typedef long long eio_ino_t; /* signed for compatibility to msvc */
79 #else
80 typedef __int64 eio_ino_t; /* unsigned not supported by msvc */
81 #endif
73#else 82#else
74typedef uid_t eio_uid_t; 83 typedef uid_t eio_uid_t;
75typedef gid_t eio_gid_t; 84 typedef gid_t eio_gid_t;
76typedef ssize_t eio_ssize_t; 85 typedef ssize_t eio_ssize_t;
86 typedef ino_t eio_ino_t;
77#endif 87#endif
78 88
79#ifndef EIO_STRUCT_STATVFS 89#ifndef EIO_STRUCT_STATVFS
80# define EIO_STRUCT_STATVFS struct statvfs 90# define EIO_STRUCT_STATVFS struct statvfs
81#endif 91#endif
92
93/* managing working directories */
94
95typedef void *eio_wd;
96
97#define EIO_CWD 0 /* the current working directory of the process, guaranteed to be a null pointer */
98#define EIO_INVALID_WD ((eio_wd)(int)-1) /* failure return for eio_wd_open */
99
100eio_wd eio_wd_open_sync (eio_wd wd, const char *path);
101void eio_wd_close_sync (eio_wd wd);
82 102
83/* for readdir */ 103/* for readdir */
84 104
85/* eio_readdir flags */ 105/* eio_readdir flags */
86enum 106enum
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120{ 140{
121 int nameofs; /* offset of null-terminated name string in (char *)req->ptr2 */ 141 int nameofs; /* offset of null-terminated name string in (char *)req->ptr2 */
122 unsigned short namelen; /* size of filename without trailing 0 */ 142 unsigned short namelen; /* size of filename without trailing 0 */
123 unsigned char type; /* one of EIO_DT_* */ 143 unsigned char type; /* one of EIO_DT_* */
124 signed char score; /* internal use */ 144 signed char score; /* internal use */
125 ino_t inode; /* the inode number, if available, otherwise unspecified */ 145 eio_ino_t inode; /* the inode number, if available, otherwise unspecified */
126}; 146};
127 147
128/* eio_msync flags */ 148/* eio_msync flags */
129enum 149enum
130{ 150{
… …
158 178
159/* the eio request structure */ 179/* the eio request structure */
160enum 180enum
161{ 181{
162 EIO_CUSTOM, 182 EIO_CUSTOM,
183 EIO_WD_OPEN, EIO_WD_CLOSE,
184
163 EIO_OPEN, EIO_CLOSE, EIO_DUP2, 185 EIO_CLOSE, EIO_DUP2,
164 EIO_READ, EIO_WRITE, 186 EIO_READ, EIO_WRITE,
165 EIO_READAHEAD, EIO_SENDFILE, 187 EIO_READAHEAD, EIO_SENDFILE,
166 EIO_STAT, EIO_LSTAT, EIO_FSTAT,
167 EIO_STATVFS, EIO_FSTATVFS, 188 EIO_FSTAT, EIO_FSTATVFS,
168 EIO_TRUNCATE, EIO_FTRUNCATE, 189 EIO_FTRUNCATE, EIO_FUTIME, EIO_FCHMOD, EIO_FCHOWN,
169 EIO_UTIME, EIO_FUTIME,
170 EIO_CHMOD, EIO_FCHMOD,
171 EIO_CHOWN, EIO_FCHOWN,
172 EIO_SYNC, EIO_FSYNC, EIO_FDATASYNC, 190 EIO_SYNC, EIO_FSYNC, EIO_FDATASYNC, EIO_SYNCFS,
173 EIO_MSYNC, EIO_MTOUCH, EIO_SYNC_FILE_RANGE, EIO_FALLOCATE, 191 EIO_MSYNC, EIO_MTOUCH, EIO_SYNC_FILE_RANGE, EIO_FALLOCATE,
174 EIO_MLOCK, EIO_MLOCKALL, 192 EIO_MLOCK, EIO_MLOCKALL,
193 EIO_GROUP, EIO_NOP,
194 EIO_BUSY,
195
196 /* these use wd + ptr1, but are emulated */
197 EIO_REALPATH,
198 EIO_STATVFS,
199 EIO_READDIR,
200
201 /* all the following requests use wd + ptr1 as path in xxxat functions */
202 EIO_OPEN,
203 EIO_STAT, EIO_LSTAT,
204 EIO_TRUNCATE,
205 EIO_UTIME,
206 EIO_CHMOD,
207 EIO_CHOWN,
175 EIO_UNLINK, EIO_RMDIR, EIO_MKDIR, EIO_RENAME, 208 EIO_UNLINK, EIO_RMDIR, EIO_MKDIR, EIO_RENAME,
176 EIO_MKNOD, EIO_READDIR, 209 EIO_MKNOD,
177 EIO_LINK, EIO_SYMLINK, EIO_READLINK, EIO_REALPATH, 210 EIO_LINK, EIO_SYMLINK, EIO_READLINK,
178 EIO_GROUP, EIO_NOP, 211
179 EIO_BUSY 212 EIO_REQ_TYPE_NUM
180}; 213};
181 214
182/* mlockall constants */ 215/* mlockall constants */
183enum 216enum
184{ 217{
… …
198/* this structure is mostly read-only */ 231/* this structure is mostly read-only */
199/* when initialising it, all members must be zero-initialised */ 232/* when initialising it, all members must be zero-initialised */
200struct eio_req 233struct eio_req
201{ 234{
202 eio_req volatile *next; /* private ETP */ 235 eio_req volatile *next; /* private ETP */
236
237 eio_wd wd; /* all applicable requests: working directory of pathname, old name; wd_open: return wd */
203 238
204 eio_ssize_t result; /* result of syscall, e.g. result = read (... */ 239 eio_ssize_t result; /* result of syscall, e.g. result = read (... */
205 off_t offs; /* read, write, truncate, readahead, sync_file_range, fallocate: file offset, mknod: dev_t */ 240 off_t offs; /* read, write, truncate, readahead, sync_file_range, fallocate: file offset, mknod: dev_t */
206 size_t size; /* read, write, readahead, sendfile, msync, mlock, sync_file_range, fallocate: length */ 241 size_t size; /* read, write, readahead, sendfile, msync, mlock, sync_file_range, fallocate: length */
207 void *ptr1; /* all applicable requests: pathname, old name; readdir: optional eio_dirents */ 242 void *ptr1; /* all applicable requests: pathname, old name; readdir: optional eio_dirents */
… …
210 eio_tstamp nv2; /* utime, futime: mtime */ 245 eio_tstamp nv2; /* utime, futime: mtime */
211 246
212 int type; /* EIO_xxx constant ETP */ 247 int type; /* EIO_xxx constant ETP */
213 int int1; /* all applicable requests: file descriptor; sendfile: output fd; open, msync, mlockall, readdir: flags */ 248 int int1; /* all applicable requests: file descriptor; sendfile: output fd; open, msync, mlockall, readdir: flags */
214 long int2; /* chown, fchown: uid; sendfile: input fd; open, chmod, mkdir, mknod: file mode, sync_file_range, fallocate: flags */ 249 long int2; /* chown, fchown: uid; sendfile: input fd; open, chmod, mkdir, mknod: file mode, sync_file_range, fallocate: flags */
215 long int3; /* chown, fchown: gid */ 250 long int3; /* chown, fchown: gid; rename, link: working directory of new name */
216 int errorno; /* errno value on syscall return */ 251 int errorno; /* errno value on syscall return */
217 252
218#if __i386 || __amd64 253#if __i386 || __amd64
219 unsigned char cancelled; 254 unsigned char cancelled;
220#else 255#else
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280eio_req *eio_nop (int pri, eio_cb cb, void *data); /* does nothing except go through the whole process */ 315eio_req *eio_nop (int pri, eio_cb cb, void *data); /* does nothing except go through the whole process */
281eio_req *eio_busy (eio_tstamp delay, int pri, eio_cb cb, void *data); /* ties a thread for this long, simulating busyness */ 316eio_req *eio_busy (eio_tstamp delay, int pri, eio_cb cb, void *data); /* ties a thread for this long, simulating busyness */
282eio_req *eio_sync (int pri, eio_cb cb, void *data); 317eio_req *eio_sync (int pri, eio_cb cb, void *data);
283eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data); 318eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data);
284eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data); 319eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data);
320eio_req *eio_syncfs (int fd, int pri, eio_cb cb, void *data);
285eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data); 321eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data);
286eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data); 322eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data);
287eio_req *eio_mlock (void *addr, size_t length, int pri, eio_cb cb, void *data); 323eio_req *eio_mlock (void *addr, size_t length, int pri, eio_cb cb, void *data);
288eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data); 324eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data);
289eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data); 325eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data);
… …
295eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */ 331eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */
296eio_req *eio_fstatvfs (int fd, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */ 332eio_req *eio_fstatvfs (int fd, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */
297eio_req *eio_futime (int fd, eio_tstamp atime, eio_tstamp mtime, int pri, eio_cb cb, void *data); 333eio_req *eio_futime (int fd, eio_tstamp atime, eio_tstamp mtime, int pri, eio_cb cb, void *data);
298eio_req *eio_ftruncate (int fd, off_t offset, int pri, eio_cb cb, void *data); 334eio_req *eio_ftruncate (int fd, off_t offset, int pri, eio_cb cb, void *data);
299eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data); 335eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data);
300eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data); 336eio_req *eio_fchown (int fd, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data);
301eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data); 337eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data);
302eio_req *eio_sendfile (int out_fd, int in_fd, off_t in_offset, size_t length, int pri, eio_cb cb, void *data); 338eio_req *eio_sendfile (int out_fd, int in_fd, off_t in_offset, size_t length, int pri, eio_cb cb, void *data);
303eio_req *eio_open (const char *path, int flags, mode_t mode, int pri, eio_cb cb, void *data); 339eio_req *eio_open (const char *path, int flags, mode_t mode, int pri, eio_cb cb, void *data);
304eio_req *eio_utime (const char *path, eio_tstamp atime, eio_tstamp mtime, int pri, eio_cb cb, void *data); 340eio_req *eio_utime (const char *path, eio_tstamp atime, eio_tstamp mtime, int pri, eio_cb cb, void *data);
305eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data); 341eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data);
306eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data); 342eio_req *eio_chown (const char *path, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data);
307eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data); 343eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data);
308eio_req *eio_mkdir (const char *path, mode_t mode, int pri, eio_cb cb, void *data); 344eio_req *eio_mkdir (const char *path, mode_t mode, int pri, eio_cb cb, void *data);
309eio_req *eio_readdir (const char *path, int flags, int pri, eio_cb cb, void *data); /* result=ptr2 allocated dynamically */ 345eio_req *eio_readdir (const char *path, int flags, int pri, eio_cb cb, void *data); /* result=ptr2 allocated dynamically */
310eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data); 346eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data);
311eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data); 347eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data);

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