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7c673cae FG |
1 | """ |
2 | This module is a thin wrapper around rgw_file. | |
3 | """ | |
4 | ||
5 | ||
6 | from cpython cimport PyObject, ref, exc, array | |
7 | from libc.stdint cimport * | |
8 | from libcpp cimport bool | |
9 | from libc.stdlib cimport malloc, realloc, free | |
10 | ||
11 | cimport rados | |
12 | ||
13 | from collections import namedtuple | |
14 | from datetime import datetime | |
15 | import errno | |
16 | ||
17 | ||
18 | cdef extern from "Python.h": | |
19 | # These are in cpython/string.pxd, but use "object" types instead of | |
20 | # PyObject*, which invokes assumptions in cpython that we need to | |
21 | # legitimately break to implement zero-copy string buffers in Image.read(). | |
22 | # This is valid use of the Python API and documented as a special case. | |
23 | PyObject *PyBytes_FromStringAndSize(char *v, Py_ssize_t len) except NULL | |
24 | char* PyBytes_AsString(PyObject *string) except NULL | |
25 | int _PyBytes_Resize(PyObject **string, Py_ssize_t newsize) except -1 | |
26 | void PyEval_InitThreads() | |
27 | ||
28 | ||
29 | cdef extern from "time.h": | |
30 | ctypedef long int time_t | |
31 | ||
32 | ||
33 | cdef extern from "sys/stat.h": | |
34 | cdef struct stat: | |
35 | unsigned long st_dev | |
36 | unsigned long st_ino | |
37 | unsigned long st_nlink | |
38 | unsigned int st_mode | |
39 | unsigned int st_uid | |
40 | unsigned int st_gid | |
41 | int __pad0 | |
42 | unsigned long st_rdev | |
43 | long int st_size | |
44 | long int st_blksize | |
45 | long int st_blocks | |
46 | time_t st_atime | |
47 | time_t st_mtime | |
48 | time_t st_ctime | |
49 | ||
50 | ||
51 | cdef extern from "rados/librgw.h" nogil: | |
52 | ctypedef void* librgw_t | |
53 | ||
54 | int librgw_create(librgw_t *rgw, int argc, char **argv) | |
55 | void librgw_shutdown(librgw_t rgw) | |
56 | ||
57 | ||
58 | cdef extern from "rados/rgw_file.h" nogil: | |
59 | enum: | |
60 | RGW_FS_TYPE_FILE | |
61 | RGW_FS_TYPE_DIRECTORY | |
62 | ||
63 | RGW_LOOKUP_FLAG_CREATE | |
64 | ||
65 | RGW_SETATTR_MODE | |
66 | RGW_SETATTR_UID | |
67 | RGW_SETATTR_GID | |
68 | RGW_SETATTR_MTIME | |
69 | RGW_SETATTR_ATIME | |
70 | RGW_SETATTR_SIZE | |
71 | RGW_SETATTR_CTIME | |
72 | ||
73 | RGW_READDIR_FLAG_NONE | |
74 | RGW_READDIR_FLAG_DOTDOT | |
75 | ||
76 | RGW_OPEN_FLAG_CREATE | |
77 | RGW_OPEN_FLAG_V3 # ops have v3 semantics | |
78 | RGW_OPEN_FLAG_STATELESS # alias it | |
79 | ||
80 | RGW_CLOSE_FLAG_RELE | |
81 | ||
82 | ||
83 | ctypedef void *rgw_fh_hk | |
84 | cdef struct rgw_file_handle: | |
85 | pass | |
86 | ||
87 | cdef struct rgw_fs: | |
88 | librgw_t rgw | |
89 | void *fs_private | |
90 | void *root_fh | |
91 | ||
92 | # mount info hypothetical--emulate Unix, support at least UUID-length fsid | |
93 | cdef struct rgw_statvfs: | |
94 | uint64_t f_bsize # file system block size | |
95 | uint64_t f_frsize # fragment size | |
96 | uint64_t f_blocks # size of fs in f_frsize units | |
97 | uint64_t f_bfree # free blocks | |
98 | uint64_t f_bavail # free blocks for unprivileged users | |
99 | uint64_t f_files # inodes | |
100 | uint64_t f_ffree # free inodes | |
101 | uint64_t f_favail # free inodes for unprivileged users | |
102 | uint64_t f_fsid[2] # /* file system ID | |
103 | uint64_t f_flag # mount flags | |
104 | uint64_t f_namemax # maximum filename length | |
105 | ||
106 | void rgwfile_version(int *major, int *minor, int *extra) | |
107 | ||
108 | int rgw_lookup(rgw_fs *fs, | |
109 | rgw_file_handle *parent_fh, const char *path, | |
eafe8130 TL |
110 | rgw_file_handle **fh, stat* st, uint32_t st_mask, |
111 | uint32_t flags) | |
7c673cae FG |
112 | |
113 | int rgw_lookup_handle(rgw_fs *fs, rgw_fh_hk *fh_hk, | |
114 | rgw_file_handle **fh, uint32_t flags) | |
115 | ||
116 | int rgw_fh_rele(rgw_fs *fs, rgw_file_handle *fh, | |
117 | uint32_t flags) | |
118 | ||
119 | int rgw_mount(librgw_t rgw, const char *uid, const char *key, | |
120 | const char *secret, rgw_fs **fs, uint32_t flags) | |
121 | ||
122 | int rgw_umount(rgw_fs *fs, uint32_t flags) | |
123 | ||
124 | int rgw_statfs(rgw_fs *fs, rgw_file_handle *parent_fh, | |
125 | rgw_statvfs *vfs_st, uint32_t flags) | |
126 | ||
127 | int rgw_create(rgw_fs *fs, rgw_file_handle *parent_fh, | |
128 | const char *name, stat *st, uint32_t mask, | |
129 | rgw_file_handle **fh, uint32_t posix_flags, | |
130 | uint32_t flags) | |
131 | ||
132 | int rgw_mkdir(rgw_fs *fs, | |
133 | rgw_file_handle *parent_fh, | |
134 | const char *name, stat *st, uint32_t mask, | |
135 | rgw_file_handle **fh, uint32_t flags) | |
136 | ||
137 | int rgw_rename(rgw_fs *fs, | |
138 | rgw_file_handle *olddir, const char* old_name, | |
139 | rgw_file_handle *newdir, const char* new_name, | |
140 | uint32_t flags) | |
141 | ||
142 | int rgw_unlink(rgw_fs *fs, | |
143 | rgw_file_handle *parent_fh, const char* path, | |
144 | uint32_t flags) | |
145 | ||
146 | int rgw_readdir(rgw_fs *fs, | |
147 | rgw_file_handle *parent_fh, uint64_t *offset, | |
eafe8130 | 148 | bool (*cb)(const char *name, void *arg, uint64_t offset, stat *st, uint32_t st_mask, uint32_t flags) nogil except? -9000, |
7c673cae FG |
149 | void *cb_arg, bool *eof, uint32_t flags) except? -9000 |
150 | ||
151 | int rgw_getattr(rgw_fs *fs, | |
152 | rgw_file_handle *fh, stat *st, | |
153 | uint32_t flags) | |
154 | ||
155 | int rgw_setattr(rgw_fs *fs, rgw_file_handle *fh, stat *st, | |
156 | uint32_t mask, uint32_t flags) | |
157 | ||
158 | int rgw_truncate(rgw_fs *fs, rgw_file_handle *fh, uint64_t size, uint32_t flags) | |
159 | ||
160 | int rgw_open(rgw_fs *fs, rgw_file_handle *parent_fh, | |
161 | uint32_t posix_flags, uint32_t flags) | |
162 | ||
163 | int rgw_close(rgw_fs *fs, rgw_file_handle *fh, | |
164 | uint32_t flags) | |
165 | ||
166 | int rgw_read(rgw_fs *fs, | |
167 | rgw_file_handle *fh, uint64_t offset, | |
168 | size_t length, size_t *bytes_read, void *buffer, | |
169 | uint32_t flags) | |
170 | ||
171 | int rgw_write(rgw_fs *fs, | |
172 | rgw_file_handle *fh, uint64_t offset, | |
173 | size_t length, size_t *bytes_written, void *buffer, | |
174 | uint32_t flags) | |
175 | ||
176 | int rgw_fsync(rgw_fs *fs, rgw_file_handle *fh, | |
177 | uint32_t flags) | |
178 | ||
179 | int rgw_commit(rgw_fs *fs, rgw_file_handle *fh, | |
180 | uint64_t offset, uint64_t length, uint32_t flags) | |
181 | ||
182 | ||
183 | class Error(Exception): | |
184 | pass | |
185 | ||
186 | ||
187 | class OSError(Error): | |
188 | """ `OSError` class, derived from `Error` """ | |
189 | def __init__(self, errno, strerror): | |
190 | self.errno = errno | |
191 | self.strerror = strerror | |
192 | ||
193 | def __str__(self): | |
194 | return '[Errno {0}] {1}'.format(self.errno, self.strerror) | |
195 | ||
196 | ||
197 | class PermissionError(OSError): | |
198 | pass | |
199 | ||
200 | ||
201 | class ObjectNotFound(OSError): | |
202 | pass | |
203 | ||
204 | ||
205 | class NoData(Error): | |
206 | pass | |
207 | ||
208 | ||
209 | class ObjectExists(Error): | |
210 | pass | |
211 | ||
212 | ||
213 | class IOError(OSError): | |
214 | pass | |
215 | ||
216 | ||
217 | class NoSpace(Error): | |
218 | pass | |
219 | ||
220 | ||
221 | class InvalidValue(Error): | |
222 | pass | |
223 | ||
224 | ||
225 | class OperationNotSupported(Error): | |
226 | pass | |
227 | ||
228 | ||
229 | class IncompleteWriteError(Error): | |
230 | pass | |
231 | ||
232 | ||
233 | class LibCephFSStateError(Error): | |
234 | pass | |
235 | ||
236 | class WouldBlock(Error): | |
237 | pass | |
238 | ||
239 | class OutOfRange(Error): | |
240 | pass | |
241 | ||
242 | IF UNAME_SYSNAME == "FreeBSD": | |
243 | cdef errno_to_exception = { | |
244 | errno.EPERM : PermissionError, | |
245 | errno.ENOENT : ObjectNotFound, | |
246 | errno.EIO : IOError, | |
247 | errno.ENOSPC : NoSpace, | |
248 | errno.EEXIST : ObjectExists, | |
249 | errno.ENOATTR : NoData, | |
250 | errno.EINVAL : InvalidValue, | |
251 | errno.EOPNOTSUPP : OperationNotSupported, | |
252 | errno.ERANGE : OutOfRange, | |
253 | errno.EWOULDBLOCK: WouldBlock, | |
254 | } | |
255 | ELSE: | |
256 | cdef errno_to_exception = { | |
257 | errno.EPERM : PermissionError, | |
258 | errno.ENOENT : ObjectNotFound, | |
259 | errno.EIO : IOError, | |
260 | errno.ENOSPC : NoSpace, | |
261 | errno.EEXIST : ObjectExists, | |
262 | errno.ENODATA : NoData, | |
263 | errno.EINVAL : InvalidValue, | |
264 | errno.EOPNOTSUPP : OperationNotSupported, | |
265 | errno.ERANGE : OutOfRange, | |
266 | errno.EWOULDBLOCK: WouldBlock, | |
267 | } | |
268 | ||
269 | ||
270 | cdef class FileHandle(object): | |
271 | cdef rgw_file_handle *handler | |
272 | ||
273 | ||
274 | StatResult = namedtuple('StatResult', | |
275 | ["st_dev", "st_ino", "st_mode", "st_nlink", "st_uid", | |
276 | "st_gid", "st_rdev", "st_size", "st_blksize", | |
277 | "st_blocks", "st_atime", "st_mtime", "st_ctime"]) | |
278 | ||
279 | ||
280 | def cstr(val, name, encoding="utf-8", opt=False): | |
281 | """ | |
282 | Create a byte string from a Python string | |
283 | ||
284 | :param basestring val: Python string | |
285 | :param str name: Name of the string parameter, for exceptions | |
286 | :param str encoding: Encoding to use | |
287 | :param bool opt: If True, None is allowed | |
288 | :rtype: bytes | |
289 | :raises: :class:`InvalidArgument` | |
290 | """ | |
291 | if opt and val is None: | |
292 | return None | |
293 | if isinstance(val, bytes): | |
294 | return val | |
295 | elif isinstance(val, unicode): | |
296 | return val.encode(encoding) | |
297 | else: | |
298 | raise TypeError('%s must be a string' % name) | |
299 | ||
300 | ||
301 | cdef make_ex(ret, msg): | |
302 | """ | |
303 | Translate a librados return code into an exception. | |
304 | ||
305 | :param ret: the return code | |
306 | :type ret: int | |
307 | :param msg: the error message to use | |
308 | :type msg: str | |
309 | :returns: a subclass of :class:`Error` | |
310 | """ | |
311 | ret = abs(ret) | |
312 | if ret in errno_to_exception: | |
313 | return errno_to_exception[ret](ret, msg) | |
314 | else: | |
315 | return Error(msg + (": error code %d" % ret)) | |
316 | ||
317 | ||
eafe8130 | 318 | cdef bool readdir_cb(const char *name, void *arg, uint64_t offset, stat *st, uint32_t st_mask, uint32_t flags) \ |
7c673cae FG |
319 | except? -9000 with gil: |
320 | if exc.PyErr_Occurred(): | |
321 | return False | |
11fdf7f2 | 322 | (<object>arg)(name, offset, flags) |
7c673cae FG |
323 | return True |
324 | ||
325 | ||
326 | class LibCephFSStateError(Error): | |
327 | pass | |
328 | ||
329 | ||
330 | cdef class LibRGWFS(object): | |
331 | """librgwfs python wrapper""" | |
332 | ||
333 | cdef public object state | |
334 | cdef public object uid | |
335 | cdef public object key | |
336 | cdef public object secret | |
337 | cdef librgw_t cluster | |
338 | cdef rgw_fs *fs | |
339 | ||
340 | def require_state(self, *args): | |
341 | if self.state in args: | |
342 | return | |
343 | raise LibCephFSStateError("You cannot perform that operation on a " | |
344 | "RGWFS object in state %s." % (self.state)) | |
345 | ||
346 | def __cinit__(self, uid, key, secret): | |
347 | PyEval_InitThreads() | |
348 | self.state = "umounted" | |
349 | ret = librgw_create(&self.cluster, 0, NULL) | |
350 | if ret != 0: | |
351 | raise make_ex(ret, "error calling librgw_create") | |
352 | self.uid = cstr(uid, "uid") | |
353 | self.key = cstr(key, "key") | |
354 | self.secret = cstr(secret, "secret") | |
355 | ||
356 | def shutdown(self): | |
357 | """ | |
358 | Unmount and destroy the ceph mount handle. | |
359 | """ | |
360 | if self.state in ["mounted"]: | |
361 | with nogil: | |
362 | ret = rgw_umount(self.fs, 0); | |
363 | if ret != 0: | |
364 | raise make_ex(ret, "error calling rgw_unmount") | |
365 | self.state = "shutdown" | |
366 | ||
367 | def __enter__(self): | |
368 | self.mount() | |
369 | return self | |
370 | ||
371 | def __exit__(self, type_, value, traceback): | |
372 | self.shutdown() | |
373 | ||
374 | def __dealloc__(self): | |
375 | self.shutdown() | |
376 | ||
377 | def version(self): | |
378 | """ | |
379 | Get the version number of the ``librgwfile`` C library. | |
380 | ||
381 | :returns: a tuple of ``(major, minor, extra)`` components of the | |
382 | libcephfs version | |
383 | """ | |
384 | cdef: | |
385 | int major = 0 | |
386 | int minor = 0 | |
387 | int extra = 0 | |
388 | with nogil: | |
389 | rgwfile_version(&major, &minor, &extra) | |
390 | return (major, minor, extra) | |
391 | ||
392 | def mount(self): | |
393 | self.require_state("umounted") | |
394 | cdef: | |
395 | char *_uid = self.uid | |
396 | char *_key = self.key | |
397 | char *_secret = self.secret | |
398 | with nogil: | |
399 | ret = rgw_mount(self.cluster, <const char*>_uid, <const char*>_key, | |
400 | <const char*>_secret, &self.fs, 0) | |
401 | if ret != 0: | |
402 | raise make_ex(ret, "error calling rgw_mount") | |
403 | self.state = "mounted" | |
404 | dir_handler = FileHandle() | |
405 | dir_handler.handler = <rgw_file_handle*>self.fs.root_fh | |
406 | return dir_handler | |
407 | ||
408 | def unmount(self): | |
409 | self.require_state("mounted") | |
410 | with nogil: | |
411 | ret = rgw_umount(self.fs, 0) | |
412 | if ret != 0: | |
413 | raise make_ex(ret, "error calling rgw_umount") | |
414 | self.state = "umounted" | |
415 | ||
416 | def statfs(self): | |
417 | self.require_state("mounted") | |
418 | cdef: | |
419 | rgw_statvfs statbuf | |
420 | ||
421 | with nogil: | |
422 | ret = rgw_statfs(self.fs, <rgw_file_handle*>self.fs.root_fh, &statbuf, 0) | |
423 | if ret < 0: | |
424 | raise make_ex(ret, "statfs failed") | |
425 | cdef uint64_t[:] fsid = statbuf.f_fsid | |
426 | return {'f_bsize': statbuf.f_bsize, | |
427 | 'f_frsize': statbuf.f_frsize, | |
428 | 'f_blocks': statbuf.f_blocks, | |
429 | 'f_bfree': statbuf.f_bfree, | |
430 | 'f_bavail': statbuf.f_bavail, | |
431 | 'f_files': statbuf.f_files, | |
432 | 'f_ffree': statbuf.f_ffree, | |
433 | 'f_favail': statbuf.f_favail, | |
434 | 'f_fsid': fsid, | |
435 | 'f_flag': statbuf.f_flag, | |
436 | 'f_namemax': statbuf.f_namemax} | |
437 | ||
438 | ||
439 | def create(self, FileHandle dir_handler, filename, flags = 0): | |
440 | self.require_state("mounted") | |
441 | ||
442 | if not isinstance(flags, int): | |
443 | raise TypeError("flags must be an integer") | |
444 | ||
445 | filename = cstr(filename, 'filename') | |
446 | ||
447 | cdef: | |
448 | rgw_file_handle *_dir_handler = <rgw_file_handle*>dir_handler.handler | |
449 | rgw_file_handle *_file_handler | |
450 | int _flags = flags | |
451 | char* _filename = filename | |
452 | stat statbuf | |
453 | ||
454 | with nogil: | |
455 | ret = rgw_create(self.fs, _dir_handler, _filename, &statbuf, 0, | |
456 | &_file_handler, 0, _flags) | |
457 | if ret < 0: | |
458 | raise make_ex(ret, "error in create '%s'" % filename) | |
459 | with nogil: | |
460 | ret = rgw_open(self.fs, _file_handler, 0, _flags) | |
461 | if ret < 0: | |
462 | raise make_ex(ret, "error in open '%s'" % filename) | |
463 | ||
464 | file_handler = FileHandle() | |
465 | file_handler.handler = _file_handler | |
466 | return file_handler | |
467 | ||
468 | def mkdir(self, FileHandle dir_handler, dirname, flags = 0): | |
469 | self.require_state("mounted") | |
470 | dirname = cstr(dirname, 'dirname') | |
471 | new_dir_handler = FileHandle() | |
472 | cdef: | |
473 | rgw_file_handle *_dir_handler = <rgw_file_handle*>dir_handler.handler | |
474 | rgw_file_handle *_new_dir_handler | |
475 | char* _dirname = dirname | |
476 | int _flags = flags | |
477 | stat statbuf | |
478 | with nogil: | |
479 | ret = rgw_mkdir(self.fs, _dir_handler, _dirname, &statbuf, | |
480 | 0, &_new_dir_handler, _flags) | |
481 | if ret < 0: | |
482 | raise make_ex(ret, "error in mkdir '%s'" % dirname) | |
483 | new_dir_handler.handler = _new_dir_handler | |
484 | return new_dir_handler | |
485 | ||
486 | def rename(self, FileHandle src_handler, src_name, FileHandle dst_handler, dst_name, flags = 0): | |
487 | self.require_state("mounted") | |
488 | ||
489 | src_name = cstr(src_name, 'src_name') | |
490 | dst_name = cstr(dst_name, 'dst_name') | |
491 | ||
492 | cdef: | |
493 | rgw_file_handle *_src_dir_handler = <rgw_file_handle*>src_handler.handler | |
494 | rgw_file_handle *_dst_dir_handler = <rgw_file_handle*>dst_handler.handler | |
495 | char* _src_name = src_name | |
496 | char* _dst_name = dst_name | |
497 | int _flags = flags | |
498 | ||
499 | with nogil: | |
500 | ret = rgw_rename(self.fs, _src_dir_handler, _src_name, | |
501 | _dst_dir_handler, _dst_name, _flags) | |
502 | if ret < 0: | |
503 | raise make_ex(ret, "error in rename '%s' to '%s'" % (src_name, | |
504 | dst_name)) | |
505 | return ret | |
506 | ||
507 | def unlink(self, FileHandle handler, name, flags = 0): | |
508 | self.require_state("mounted") | |
509 | name = cstr(name, 'name') | |
510 | cdef: | |
511 | rgw_file_handle *_handler = <rgw_file_handle*>handler.handler | |
512 | int _flags = flags | |
513 | char* _name = name | |
514 | with nogil: | |
515 | ret = rgw_unlink(self.fs, _handler, _name, _flags) | |
516 | if ret < 0: | |
517 | raise make_ex(ret, "error in unlink") | |
518 | return ret | |
519 | ||
520 | def readdir(self, FileHandle dir_handler, iterate_cb, offset, flags = 0): | |
521 | self.require_state("mounted") | |
522 | ||
523 | cdef: | |
524 | rgw_file_handle *_dir_handler = <rgw_file_handle*>dir_handler.handler | |
525 | uint64_t _offset = offset | |
526 | bool _eof | |
527 | uint32_t _flags = flags | |
528 | with nogil: | |
529 | ret = rgw_readdir(self.fs, _dir_handler, &_offset, &readdir_cb, | |
530 | <void *>iterate_cb, &_eof, _flags) | |
531 | if ret < 0: | |
532 | raise make_ex(ret, "error in readdir") | |
533 | ||
534 | return (_offset, _eof) | |
535 | ||
536 | def fstat(self, FileHandle file_handler): | |
537 | self.require_state("mounted") | |
538 | ||
539 | cdef: | |
540 | rgw_file_handle *_file_handler = <rgw_file_handle*>file_handler.handler | |
541 | stat statbuf | |
542 | ||
543 | with nogil: | |
544 | ret = rgw_getattr(self.fs, _file_handler, &statbuf, 0) | |
545 | if ret < 0: | |
546 | raise make_ex(ret, "error in getattr") | |
547 | return StatResult(st_dev=statbuf.st_dev, st_ino=statbuf.st_ino, | |
548 | st_mode=statbuf.st_mode, st_nlink=statbuf.st_nlink, | |
549 | st_uid=statbuf.st_uid, st_gid=statbuf.st_gid, | |
550 | st_rdev=statbuf.st_rdev, st_size=statbuf.st_size, | |
551 | st_blksize=statbuf.st_blksize, | |
552 | st_blocks=statbuf.st_blocks, | |
553 | st_atime=datetime.fromtimestamp(statbuf.st_atime), | |
554 | st_mtime=datetime.fromtimestamp(statbuf.st_mtime), | |
555 | st_ctime=datetime.fromtimestamp(statbuf.st_ctime)) | |
556 | ||
557 | def opendir(self, FileHandle dir_handler, dirname, flags = 0): | |
558 | self.require_state("mounted") | |
559 | ||
560 | if not isinstance(flags, int): | |
561 | raise TypeError("flags must be an integer") | |
562 | ||
563 | dirname = cstr(dirname, 'dirname') | |
564 | ||
565 | cdef: | |
566 | rgw_file_handle *_dir_handler = <rgw_file_handle*>dir_handler.handler | |
567 | rgw_file_handle *_file_handler | |
568 | int _flags = flags | |
569 | char* _dirname = dirname | |
eafe8130 TL |
570 | stat st |
571 | uint32_t st_mask = 0 | |
7c673cae FG |
572 | |
573 | with nogil: | |
574 | ret = rgw_lookup(self.fs, _dir_handler, _dirname, | |
eafe8130 | 575 | &_file_handler, &st, st_mask, _flags) |
7c673cae FG |
576 | if ret < 0: |
577 | raise make_ex(ret, "error in open '%s'" % dirname) | |
578 | ||
579 | file_handler = FileHandle() | |
580 | file_handler.handler = _file_handler | |
581 | return file_handler | |
582 | ||
583 | def open(self, FileHandle dir_handler, filename, flags = 0): | |
584 | self.require_state("mounted") | |
585 | ||
586 | if not isinstance(flags, int): | |
587 | raise TypeError("flags must be an integer") | |
588 | ||
589 | filename = cstr(filename, 'filename') | |
590 | ||
591 | cdef: | |
592 | rgw_file_handle *_dir_handler = <rgw_file_handle*>dir_handler.handler | |
593 | rgw_file_handle *_file_handler | |
594 | int _flags = flags | |
595 | char* _filename = filename | |
eafe8130 TL |
596 | stat st |
597 | uint32_t st_mask = 0 | |
7c673cae FG |
598 | |
599 | with nogil: | |
600 | ret = rgw_lookup(self.fs, _dir_handler, _filename, | |
eafe8130 | 601 | &_file_handler, &st, st_mask, _flags) |
7c673cae FG |
602 | if ret < 0: |
603 | raise make_ex(ret, "error in open '%s'" % filename) | |
604 | with nogil: | |
605 | ret = rgw_open(self.fs, _file_handler, 0, _flags) | |
606 | if ret < 0: | |
607 | raise make_ex(ret, "error in open '%s'" % filename) | |
608 | ||
609 | file_handler = FileHandle() | |
610 | file_handler.handler = _file_handler | |
611 | return file_handler | |
612 | ||
613 | def close(self, FileHandle file_handler, flags = 0): | |
614 | self.require_state("mounted") | |
615 | cdef: | |
616 | rgw_file_handle *_file_handler = <rgw_file_handle*>file_handler.handler | |
617 | int _flags = flags | |
618 | with nogil: | |
619 | ret = rgw_close(self.fs, _file_handler, _flags) | |
620 | if ret < 0: | |
621 | raise make_ex(ret, "error in close") | |
622 | ||
623 | def read(self, FileHandle file_handler, offset, l, flags = 0): | |
624 | self.require_state("mounted") | |
625 | if not isinstance(offset, int): | |
626 | raise TypeError('offset must be an int') | |
627 | if not isinstance(l, int): | |
628 | raise TypeError('l must be an int') | |
629 | cdef: | |
630 | rgw_file_handle *_file_handler = <rgw_file_handle*>file_handler.handler | |
631 | int64_t _offset = offset | |
632 | size_t _length = l | |
633 | size_t _got | |
634 | int _flags = flags | |
635 | ||
636 | char *ret_buf | |
637 | PyObject* ret_s = NULL | |
638 | ||
639 | ret_s = PyBytes_FromStringAndSize(NULL, _length) | |
640 | try: | |
641 | ret_buf = PyBytes_AsString(ret_s) | |
642 | with nogil: | |
643 | ret = rgw_read(self.fs, _file_handler, _offset, _length, | |
644 | &_got, ret_buf, _flags) | |
645 | if ret < 0: | |
646 | raise make_ex(ret, "error in read") | |
647 | ||
648 | if _got < _length: | |
649 | _PyBytes_Resize(&ret_s, _got) | |
650 | ||
651 | return <object>ret_s | |
652 | finally: | |
653 | # We DECREF unconditionally: the cast to object above will have | |
654 | # INCREFed if necessary. This also takes care of exceptions, | |
655 | # including if _PyString_Resize fails (that will free the string | |
656 | # itself and set ret_s to NULL, hence XDECREF). | |
657 | ref.Py_XDECREF(ret_s) | |
658 | ||
659 | ||
660 | def write(self, FileHandle file_handler, offset, buf, flags = 0): | |
661 | self.require_state("mounted") | |
662 | if not isinstance(buf, bytes): | |
663 | raise TypeError('buf must be a bytes') | |
664 | if not isinstance(offset, int): | |
665 | raise TypeError('offset must be an int') | |
666 | ||
667 | cdef: | |
668 | rgw_file_handle *_file_handler = <rgw_file_handle*>file_handler.handler | |
669 | char *_data = buf | |
670 | int64_t _offset = offset | |
671 | ||
672 | size_t length = len(buf) | |
673 | int _flags = flags | |
674 | size_t _written | |
675 | ||
676 | with nogil: | |
677 | ret = rgw_write(self.fs, _file_handler, _offset, length, &_written, | |
678 | _data, _flags) | |
679 | if ret < 0: | |
680 | raise make_ex(ret, "error in write") | |
681 | return ret | |
682 | ||
683 | ||
684 | def fsync(self, FileHandle handler, flags = 0): | |
685 | self.require_state("mounted") | |
686 | ||
687 | cdef: | |
688 | rgw_file_handle *_file_handler = <rgw_file_handle*>handler.handler | |
689 | int _flags = flags | |
690 | with nogil: | |
691 | ret = rgw_fsync(self.fs, _file_handler, _flags) | |
692 | ||
693 | if ret < 0: | |
694 | raise make_ex(ret, "fsync failed") |