… | |
… | |
4 | * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libeio@schmorp.de> |
4 | * Copyright (c) 2007,2008,2009,2010,2011,2012 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 | * |
10 | * 1. Redistributions of source code must retain the above copyright notice, |
10 | * 1. Redistributions of source code must retain the above copyright notice, |
11 | * this list of conditions and the following disclaimer. |
11 | * this list of conditions and the following disclaimer. |
12 | * |
12 | * |
13 | * 2. Redistributions in binary form must reproduce the above copyright |
13 | * 2. Redistributions in binary form must reproduce the above copyright |
14 | * notice, this list of conditions and the following disclaimer in the |
14 | * notice, this list of conditions and the following disclaimer in the |
15 | * documentation and/or other materials provided with the distribution. |
15 | * documentation and/or other materials provided with the distribution. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
… | |
… | |
168 | }; |
168 | }; |
169 | |
169 | |
170 | /* eio_fallocate flags */ |
170 | /* eio_fallocate flags */ |
171 | enum |
171 | enum |
172 | { |
172 | { |
173 | EIO_FALLOC_FL_KEEP_SIZE = 1 /* MUST match the value in linux/falloc.h */ |
173 | /* these MUST match the value in linux/falloc.h */ |
|
|
174 | EIO_FALLOC_FL_KEEP_SIZE = 1, |
|
|
175 | EIO_FALLOC_FL_PUNCH_HOLE = 2 |
174 | }; |
176 | }; |
175 | |
177 | |
176 | /* timestamps and differences - feel free to use double in your code directly */ |
178 | /* timestamps and differences - feel free to use double in your code directly */ |
177 | typedef double eio_tstamp; |
179 | typedef double eio_tstamp; |
178 | |
180 | |
… | |
… | |
193 | EIO_GROUP, EIO_NOP, |
195 | EIO_GROUP, EIO_NOP, |
194 | EIO_BUSY, |
196 | EIO_BUSY, |
195 | |
197 | |
196 | /* these use wd + ptr1, but are emulated */ |
198 | /* these use wd + ptr1, but are emulated */ |
197 | EIO_REALPATH, |
199 | EIO_REALPATH, |
198 | EIO_STATVFS, |
|
|
199 | EIO_READDIR, |
200 | EIO_READDIR, |
200 | |
201 | |
201 | /* all the following requests use wd + ptr1 as path in xxxat functions */ |
202 | /* all the following requests use wd + ptr1 as path in xxxat functions */ |
202 | EIO_OPEN, |
203 | EIO_OPEN, |
203 | EIO_STAT, EIO_LSTAT, |
204 | EIO_STAT, EIO_LSTAT, EIO_STATVFS, |
204 | EIO_TRUNCATE, |
205 | EIO_TRUNCATE, |
205 | EIO_UTIME, |
206 | EIO_UTIME, |
206 | EIO_CHMOD, |
207 | EIO_CHMOD, |
207 | EIO_CHOWN, |
208 | EIO_CHOWN, |
208 | EIO_UNLINK, EIO_RMDIR, EIO_MKDIR, EIO_RENAME, |
209 | EIO_UNLINK, EIO_RMDIR, EIO_MKDIR, EIO_RENAME, |
… | |
… | |
253 | void *ptr1; /* all applicable requests: pathname, old name; readdir: optional eio_dirents */ |
254 | void *ptr1; /* all applicable requests: pathname, old name; readdir: optional eio_dirents */ |
254 | void *ptr2; /* all applicable requests: new name or memory buffer; readdir: name strings */ |
255 | void *ptr2; /* all applicable requests: new name or memory buffer; readdir: name strings */ |
255 | eio_tstamp nv1; /* utime, futime: atime; busy: sleep time */ |
256 | eio_tstamp nv1; /* utime, futime: atime; busy: sleep time */ |
256 | eio_tstamp nv2; /* utime, futime: mtime */ |
257 | eio_tstamp nv2; /* utime, futime: mtime */ |
257 | |
258 | |
258 | int type; /* EIO_xxx constant ETP */ |
|
|
259 | int int1; /* all applicable requests: file descriptor; sendfile: output fd; open, msync, mlockall, readdir: flags */ |
259 | int int1; /* all applicable requests: file descriptor; sendfile: output fd; open, msync, mlockall, readdir: flags */ |
260 | long int2; /* chown, fchown: uid; sendfile: input fd; open, chmod, mkdir, mknod: file mode, seek: whence, sync_file_range, fallocate: flags */ |
260 | long int2; /* chown, fchown: uid; sendfile: input fd; open, chmod, mkdir, mknod: file mode, seek: whence, sync_file_range, fallocate: flags */ |
261 | long int3; /* chown, fchown: gid; rename, link: working directory of new name */ |
261 | long int3; /* chown, fchown: gid; rename, link: working directory of new name */ |
262 | int errorno; /* errno value on syscall return */ |
262 | int errorno; /* errno value on syscall return */ |
263 | |
263 | |
|
|
264 | unsigned char flags; /* private */ |
|
|
265 | |
|
|
266 | signed char type;/* EIO_xxx constant ETP */ |
|
|
267 | signed char pri; /* the priority ETP */ |
264 | #if __i386 || __amd64 |
268 | #if __i386 || __amd64 |
265 | unsigned char cancelled; |
269 | unsigned char cancelled; /* ETP */ |
266 | #else |
270 | #else |
267 | sig_atomic_t cancelled; |
271 | sig_atomic_t cancelled; /* ETP */ |
268 | #endif |
272 | #endif |
269 | |
|
|
270 | unsigned char flags; /* private */ |
|
|
271 | signed char pri; /* the priority */ |
|
|
272 | |
273 | |
273 | void *data; |
274 | void *data; |
274 | eio_cb finish; |
275 | eio_cb finish; |
275 | void (*destroy)(eio_req *req); /* called when request no longer needed */ |
276 | void (*destroy)(eio_req *req); /* called when request no longer needed */ |
276 | void (*feed)(eio_req *req); /* only used for group requests */ |
277 | void (*feed)(eio_req *req); /* only used for group requests */ |
277 | |
278 | |
278 | EIO_REQ_MEMBERS |
279 | EIO_REQ_MEMBERS |
279 | |
280 | |
280 | eio_req *grp, *grp_prev, *grp_next, *grp_first; /* private */ |
281 | eio_req *grp, *grp_prev, *grp_next, *grp_first; /* private ETP */ |
281 | }; |
282 | }; |
282 | |
283 | |
283 | /* _private_ request flags */ |
284 | /* _private_ request flags */ |
284 | enum { |
285 | enum { |
285 | EIO_FLAG_PTR1_FREE = 0x01, /* need to free(ptr1) */ |
286 | EIO_FLAG_PTR1_FREE = 0x01, /* need to free(ptr1) */ |