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88 | |
88 | |
89 | #ifndef EIO_STRUCT_STATVFS |
89 | #ifndef EIO_STRUCT_STATVFS |
90 | # define EIO_STRUCT_STATVFS struct statvfs |
90 | # define EIO_STRUCT_STATVFS struct statvfs |
91 | #endif |
91 | #endif |
92 | |
92 | |
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93 | /* managing working directories */ |
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94 | |
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95 | typedef void *eio_wd; |
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96 | |
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97 | #define EIO_CWD 0 /* the current working directory of the process, guaranteed to be a null pointer */ |
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98 | #define EIO_INVALID_WD ((eio_wd)(int)-1) /* failure return for eio_wd_open */ |
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99 | |
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100 | eio_wd eio_wd_open_sync (eio_wd wd, const char *path); |
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101 | void eio_wd_close_sync (eio_wd wd); |
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102 | |
93 | /* for readdir */ |
103 | /* for readdir */ |
94 | |
104 | |
95 | /* eio_readdir flags */ |
105 | /* eio_readdir flags */ |
96 | enum |
106 | enum |
97 | { |
107 | { |
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168 | |
178 | |
169 | /* the eio request structure */ |
179 | /* the eio request structure */ |
170 | enum |
180 | enum |
171 | { |
181 | { |
172 | EIO_CUSTOM, |
182 | EIO_CUSTOM, |
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183 | EIO_WD_OPEN, EIO_WD_CLOSE, |
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184 | |
173 | EIO_OPEN, EIO_CLOSE, EIO_DUP2, |
185 | EIO_CLOSE, EIO_DUP2, |
174 | EIO_READ, EIO_WRITE, |
186 | EIO_READ, EIO_WRITE, |
175 | EIO_READAHEAD, EIO_SENDFILE, |
187 | EIO_READAHEAD, EIO_SENDFILE, |
176 | EIO_STAT, EIO_LSTAT, EIO_FSTAT, |
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177 | EIO_STATVFS, EIO_FSTATVFS, |
188 | EIO_FSTAT, EIO_FSTATVFS, |
178 | EIO_TRUNCATE, EIO_FTRUNCATE, |
189 | EIO_FTRUNCATE, EIO_FUTIME, EIO_FCHMOD, EIO_FCHOWN, |
179 | EIO_UTIME, EIO_FUTIME, |
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180 | EIO_CHMOD, EIO_FCHMOD, |
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181 | EIO_CHOWN, EIO_FCHOWN, |
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182 | EIO_SYNC, EIO_FSYNC, EIO_FDATASYNC, EIO_SYNCFS, |
190 | EIO_SYNC, EIO_FSYNC, EIO_FDATASYNC, EIO_SYNCFS, |
183 | EIO_MSYNC, EIO_MTOUCH, EIO_SYNC_FILE_RANGE, EIO_FALLOCATE, |
191 | EIO_MSYNC, EIO_MTOUCH, EIO_SYNC_FILE_RANGE, EIO_FALLOCATE, |
184 | EIO_MLOCK, EIO_MLOCKALL, |
192 | EIO_MLOCK, EIO_MLOCKALL, |
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193 | EIO_GROUP, EIO_NOP, |
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194 | EIO_BUSY, |
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195 | |
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196 | /* these use wd + ptr1, but are emulated */ |
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197 | EIO_REALPATH, |
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198 | EIO_STATVFS, |
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199 | EIO_READDIR, |
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200 | |
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201 | /* all the following requests use wd + ptr1 as path in xxxat functions */ |
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202 | EIO_OPEN, |
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203 | EIO_STAT, EIO_LSTAT, |
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204 | EIO_TRUNCATE, |
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205 | EIO_UTIME, |
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206 | EIO_CHMOD, |
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207 | EIO_CHOWN, |
185 | EIO_UNLINK, EIO_RMDIR, EIO_MKDIR, EIO_RENAME, |
208 | EIO_UNLINK, EIO_RMDIR, EIO_MKDIR, EIO_RENAME, |
186 | EIO_MKNOD, EIO_READDIR, |
209 | EIO_MKNOD, |
187 | EIO_LINK, EIO_SYMLINK, EIO_READLINK, EIO_REALPATH, |
210 | EIO_LINK, EIO_SYMLINK, EIO_READLINK, |
188 | EIO_GROUP, EIO_NOP, |
211 | |
189 | EIO_BUSY |
212 | EIO_REQ_TYPE_NUM |
190 | }; |
213 | }; |
191 | |
214 | |
192 | /* mlockall constants */ |
215 | /* mlockall constants */ |
193 | enum |
216 | enum |
194 | { |
217 | { |
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208 | /* this structure is mostly read-only */ |
231 | /* this structure is mostly read-only */ |
209 | /* when initialising it, all members must be zero-initialised */ |
232 | /* when initialising it, all members must be zero-initialised */ |
210 | struct eio_req |
233 | struct eio_req |
211 | { |
234 | { |
212 | eio_req volatile *next; /* private ETP */ |
235 | eio_req volatile *next; /* private ETP */ |
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236 | |
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237 | eio_wd wd; /* all applicable requests: working directory of pathname, old name; wd_open: return wd */ |
213 | |
238 | |
214 | eio_ssize_t result; /* result of syscall, e.g. result = read (... */ |
239 | eio_ssize_t result; /* result of syscall, e.g. result = read (... */ |
215 | 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 */ |
216 | 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 */ |
217 | 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 */ |
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220 | eio_tstamp nv2; /* utime, futime: mtime */ |
245 | eio_tstamp nv2; /* utime, futime: mtime */ |
221 | |
246 | |
222 | int type; /* EIO_xxx constant ETP */ |
247 | int type; /* EIO_xxx constant ETP */ |
223 | 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 */ |
224 | 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 */ |
225 | long int3; /* chown, fchown: gid */ |
250 | long int3; /* chown, fchown: gid; rename: working directory of new name */ |
226 | int errorno; /* errno value on syscall return */ |
251 | int errorno; /* errno value on syscall return */ |
227 | |
252 | |
228 | #if __i386 || __amd64 |
253 | #if __i386 || __amd64 |
229 | unsigned char cancelled; |
254 | unsigned char cancelled; |
230 | #else |
255 | #else |