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9f107513 AL |
1 | #ifndef _QEMU_VIRTIO_9P_H |
2 | #define _QEMU_VIRTIO_9P_H | |
3 | ||
4 | #include <sys/types.h> | |
5 | #include <dirent.h> | |
6 | #include <sys/time.h> | |
7 | #include <utime.h> | |
7a462745 | 8 | #include <sys/resource.h> |
ff06030f | 9 | #include "hw/virtio.h" |
353ac78d | 10 | #include "fsdev/file-op-9p.h" |
9f107513 AL |
11 | |
12 | /* The feature bitmap for virtio 9P */ | |
13 | /* The mount point is specified in a config variable */ | |
14 | #define VIRTIO_9P_MOUNT_TAG 0 | |
15 | ||
16 | enum { | |
8f4d1ca5 AB |
17 | P9_TLERROR = 6, |
18 | P9_RLERROR, | |
be940c87 MK |
19 | P9_TSTATFS = 8, |
20 | P9_RSTATFS, | |
771e9d4c MK |
21 | P9_TLOPEN = 12, |
22 | P9_RLOPEN, | |
c1568af5 VJJ |
23 | P9_TLCREATE = 14, |
24 | P9_RLCREATE, | |
08c60fc9 VJJ |
25 | P9_TSYMLINK = 16, |
26 | P9_RSYMLINK, | |
5268cecc MK |
27 | P9_TMKNOD = 18, |
28 | P9_RMKNOD, | |
c7b4b0b3 MK |
29 | P9_TRENAME = 20, |
30 | P9_RRENAME, | |
df0973a4 MK |
31 | P9_TREADLINK = 22, |
32 | P9_RREADLINK, | |
00ede4c2 SK |
33 | P9_TGETATTR = 24, |
34 | P9_RGETATTR, | |
c79ce737 SK |
35 | P9_TSETATTR = 26, |
36 | P9_RSETATTR, | |
fa32ef88 AK |
37 | P9_TXATTRWALK = 30, |
38 | P9_RXATTRWALK, | |
10b468bd AK |
39 | P9_TXATTRCREATE = 32, |
40 | P9_RXATTRCREATE, | |
c18e2f94 SK |
41 | P9_TREADDIR = 40, |
42 | P9_RREADDIR, | |
b41e95d3 VJJ |
43 | P9_TFSYNC = 50, |
44 | P9_RFSYNC, | |
82cc3ee8 MK |
45 | P9_TLOCK = 52, |
46 | P9_RLOCK, | |
8f354003 MK |
47 | P9_TGETLOCK = 54, |
48 | P9_RGETLOCK, | |
b2c224be VJJ |
49 | P9_TLINK = 70, |
50 | P9_RLINK, | |
b67592ea MK |
51 | P9_TMKDIR = 72, |
52 | P9_RMKDIR, | |
9f107513 AL |
53 | P9_TVERSION = 100, |
54 | P9_RVERSION, | |
55 | P9_TAUTH = 102, | |
56 | P9_RAUTH, | |
57 | P9_TATTACH = 104, | |
58 | P9_RATTACH, | |
59 | P9_TERROR = 106, | |
60 | P9_RERROR, | |
61 | P9_TFLUSH = 108, | |
62 | P9_RFLUSH, | |
63 | P9_TWALK = 110, | |
64 | P9_RWALK, | |
65 | P9_TOPEN = 112, | |
66 | P9_ROPEN, | |
67 | P9_TCREATE = 114, | |
68 | P9_RCREATE, | |
69 | P9_TREAD = 116, | |
70 | P9_RREAD, | |
71 | P9_TWRITE = 118, | |
72 | P9_RWRITE, | |
73 | P9_TCLUNK = 120, | |
74 | P9_RCLUNK, | |
75 | P9_TREMOVE = 122, | |
76 | P9_RREMOVE, | |
77 | P9_TSTAT = 124, | |
78 | P9_RSTAT, | |
79 | P9_TWSTAT = 126, | |
80 | P9_RWSTAT, | |
81 | }; | |
82 | ||
83 | ||
84 | /* qid.types */ | |
85 | enum { | |
86 | P9_QTDIR = 0x80, | |
87 | P9_QTAPPEND = 0x40, | |
88 | P9_QTEXCL = 0x20, | |
89 | P9_QTMOUNT = 0x10, | |
90 | P9_QTAUTH = 0x08, | |
91 | P9_QTTMP = 0x04, | |
92 | P9_QTSYMLINK = 0x02, | |
93 | P9_QTLINK = 0x01, | |
94 | P9_QTFILE = 0x00, | |
95 | }; | |
96 | ||
84151514 MK |
97 | enum p9_proto_version { |
98 | V9FS_PROTO_2000U = 0x01, | |
99 | V9FS_PROTO_2000L = 0x02, | |
100 | }; | |
101 | ||
9f107513 AL |
102 | #define P9_NOTAG (u16)(~0) |
103 | #define P9_NOFID (u32)(~0) | |
104 | #define P9_MAXWELEM 16 | |
7a462745 AK |
105 | |
106 | #define FID_REFERENCED 0x1 | |
107 | #define FID_NON_RECLAIMABLE 0x2 | |
faa44e3d VJJ |
108 | static inline const char *rpath(FsContext *ctx, const char *path, char *buffer) |
109 | { | |
110 | snprintf(buffer, PATH_MAX, "%s/%s", ctx->fs_root, path); | |
111 | return buffer; | |
112 | } | |
9f107513 | 113 | |
5e94c103 MK |
114 | /* |
115 | * ample room for Twrite/Rread header | |
116 | * size[4] Tread/Twrite tag[2] fid[4] offset[8] count[4] | |
117 | */ | |
118 | #define P9_IOHDRSZ 24 | |
119 | ||
9f107513 | 120 | typedef struct V9fsPDU V9fsPDU; |
ff06030f | 121 | struct V9fsState; |
9f107513 AL |
122 | |
123 | struct V9fsPDU | |
124 | { | |
125 | uint32_t size; | |
126 | uint16_t tag; | |
127 | uint8_t id; | |
128 | VirtQueueElement elem; | |
ff06030f | 129 | struct V9fsState *s; |
9f107513 AL |
130 | QLIST_ENTRY(V9fsPDU) next; |
131 | }; | |
132 | ||
133 | ||
134 | /* FIXME | |
135 | * 1) change user needs to set groups and stuff | |
136 | */ | |
137 | ||
138 | /* from Linux's linux/virtio_9p.h */ | |
139 | ||
140 | /* The ID for virtio console */ | |
141 | #define VIRTIO_ID_9P 9 | |
142 | #define MAX_REQ 128 | |
143 | #define MAX_TAG_LEN 32 | |
144 | ||
145 | #define BUG_ON(cond) assert(!(cond)) | |
146 | ||
147 | typedef struct V9fsFidState V9fsFidState; | |
148 | ||
149 | typedef struct V9fsString | |
150 | { | |
151 | int16_t size; | |
152 | char *data; | |
153 | } V9fsString; | |
154 | ||
155 | typedef struct V9fsQID | |
156 | { | |
157 | int8_t type; | |
158 | int32_t version; | |
159 | int64_t path; | |
160 | } V9fsQID; | |
161 | ||
162 | typedef struct V9fsStat | |
163 | { | |
164 | int16_t size; | |
165 | int16_t type; | |
166 | int32_t dev; | |
167 | V9fsQID qid; | |
168 | int32_t mode; | |
169 | int32_t atime; | |
170 | int32_t mtime; | |
171 | int64_t length; | |
172 | V9fsString name; | |
173 | V9fsString uid; | |
174 | V9fsString gid; | |
175 | V9fsString muid; | |
176 | /* 9p2000.u */ | |
177 | V9fsString extension; | |
178 | int32_t n_uid; | |
179 | int32_t n_gid; | |
180 | int32_t n_muid; | |
181 | } V9fsStat; | |
182 | ||
d62dbb51 AK |
183 | enum { |
184 | P9_FID_NONE = 0, | |
185 | P9_FID_FILE, | |
186 | P9_FID_DIR, | |
187 | P9_FID_XATTR, | |
188 | }; | |
189 | ||
190 | typedef struct V9fsXattr | |
191 | { | |
192 | int64_t copied_len; | |
193 | int64_t len; | |
194 | void *value; | |
195 | V9fsString name; | |
196 | int flags; | |
197 | } V9fsXattr; | |
198 | ||
9f107513 AL |
199 | struct V9fsFidState |
200 | { | |
d62dbb51 | 201 | int fid_type; |
9f107513 AL |
202 | int32_t fid; |
203 | V9fsString path; | |
d62dbb51 | 204 | union { |
7a462745 AK |
205 | int fd; |
206 | DIR *dir; | |
207 | V9fsXattr xattr; | |
d62dbb51 | 208 | } fs; |
7a462745 AK |
209 | union { |
210 | int fd; | |
211 | DIR *dir; | |
212 | } fs_reclaim; | |
213 | int flags; | |
214 | int open_flags; | |
9f107513 | 215 | uid_t uid; |
84dfb926 AK |
216 | int ref; |
217 | int clunked; | |
9f107513 | 218 | V9fsFidState *next; |
7a462745 | 219 | V9fsFidState *rclm_lst; |
9f107513 AL |
220 | }; |
221 | ||
222 | typedef struct V9fsState | |
223 | { | |
224 | VirtIODevice vdev; | |
225 | VirtQueue *vq; | |
226 | V9fsPDU pdus[MAX_REQ]; | |
227 | QLIST_HEAD(, V9fsPDU) free_list; | |
228 | V9fsFidState *fid_list; | |
229 | FileOperations *ops; | |
230 | FsContext ctx; | |
231 | uint16_t tag_len; | |
232 | uint8_t *tag; | |
233 | size_t config_size; | |
84151514 | 234 | enum p9_proto_version proto_version; |
5e94c103 | 235 | int32_t msize; |
9f107513 AL |
236 | } V9fsState; |
237 | ||
fac4f111 VJJ |
238 | typedef struct V9fsStatState { |
239 | V9fsPDU *pdu; | |
240 | size_t offset; | |
241 | V9fsStat v9stat; | |
242 | V9fsFidState *fidp; | |
243 | struct stat stbuf; | |
244 | } V9fsStatState; | |
245 | ||
00ede4c2 SK |
246 | typedef struct V9fsStatDotl { |
247 | uint64_t st_result_mask; | |
248 | V9fsQID qid; | |
249 | uint32_t st_mode; | |
250 | uint32_t st_uid; | |
251 | uint32_t st_gid; | |
252 | uint64_t st_nlink; | |
253 | uint64_t st_rdev; | |
254 | uint64_t st_size; | |
255 | uint64_t st_blksize; | |
256 | uint64_t st_blocks; | |
257 | uint64_t st_atime_sec; | |
258 | uint64_t st_atime_nsec; | |
259 | uint64_t st_mtime_sec; | |
260 | uint64_t st_mtime_nsec; | |
261 | uint64_t st_ctime_sec; | |
262 | uint64_t st_ctime_nsec; | |
263 | uint64_t st_btime_sec; | |
264 | uint64_t st_btime_nsec; | |
265 | uint64_t st_gen; | |
266 | uint64_t st_data_version; | |
267 | } V9fsStatDotl; | |
268 | ||
fac4f111 VJJ |
269 | typedef struct V9fsOpenState { |
270 | V9fsPDU *pdu; | |
271 | size_t offset; | |
771e9d4c | 272 | int32_t mode; |
fac4f111 VJJ |
273 | V9fsFidState *fidp; |
274 | V9fsQID qid; | |
275 | struct stat stbuf; | |
5e94c103 | 276 | int iounit; |
fac4f111 VJJ |
277 | } V9fsOpenState; |
278 | ||
279 | typedef struct V9fsReadState { | |
280 | V9fsPDU *pdu; | |
281 | size_t offset; | |
282 | int32_t count; | |
283 | int32_t total; | |
284 | int64_t off; | |
285 | V9fsFidState *fidp; | |
286 | struct iovec iov[128]; /* FIXME: bad, bad, bad */ | |
287 | struct iovec *sg; | |
288 | off_t dir_pos; | |
289 | struct dirent *dent; | |
290 | struct stat stbuf; | |
291 | V9fsString name; | |
292 | V9fsStat v9stat; | |
293 | int32_t len; | |
294 | int32_t cnt; | |
295 | int32_t max_count; | |
296 | } V9fsReadState; | |
297 | ||
298 | typedef struct V9fsWriteState { | |
299 | V9fsPDU *pdu; | |
300 | size_t offset; | |
301 | int32_t len; | |
302 | int32_t count; | |
303 | int32_t total; | |
304 | int64_t off; | |
305 | V9fsFidState *fidp; | |
306 | struct iovec iov[128]; /* FIXME: bad, bad, bad */ | |
307 | struct iovec *sg; | |
308 | int cnt; | |
309 | } V9fsWriteState; | |
310 | ||
c79ce737 SK |
311 | typedef struct V9fsIattr |
312 | { | |
313 | int32_t valid; | |
314 | int32_t mode; | |
315 | int32_t uid; | |
316 | int32_t gid; | |
317 | int64_t size; | |
318 | int64_t atime_sec; | |
319 | int64_t atime_nsec; | |
320 | int64_t mtime_sec; | |
321 | int64_t mtime_nsec; | |
322 | } V9fsIattr; | |
323 | ||
9f107513 AL |
324 | struct virtio_9p_config |
325 | { | |
326 | /* number of characters in tag */ | |
327 | uint16_t tag_len; | |
328 | /* Variable size tag name */ | |
329 | uint8_t tag[0]; | |
541dc0d4 | 330 | } QEMU_PACKED; |
9f107513 | 331 | |
5268cecc MK |
332 | typedef struct V9fsMkState { |
333 | V9fsPDU *pdu; | |
334 | size_t offset; | |
335 | V9fsQID qid; | |
336 | struct stat stbuf; | |
337 | V9fsString name; | |
338 | V9fsString fullname; | |
339 | } V9fsMkState; | |
340 | ||
82cc3ee8 MK |
341 | #define P9_LOCK_SUCCESS 0 |
342 | #define P9_LOCK_BLOCKED 1 | |
343 | #define P9_LOCK_ERROR 2 | |
344 | #define P9_LOCK_GRACE 3 | |
345 | ||
346 | #define P9_LOCK_FLAGS_BLOCK 1 | |
347 | #define P9_LOCK_FLAGS_RECLAIM 2 | |
348 | ||
349 | typedef struct V9fsFlock | |
350 | { | |
351 | uint8_t type; | |
352 | uint32_t flags; | |
353 | uint64_t start; /* absolute offset */ | |
354 | uint64_t length; | |
355 | uint32_t proc_id; | |
356 | V9fsString client_id; | |
357 | } V9fsFlock; | |
358 | ||
8f354003 MK |
359 | typedef struct V9fsGetlock |
360 | { | |
361 | uint8_t type; | |
362 | uint64_t start; /* absolute offset */ | |
363 | uint64_t length; | |
364 | uint32_t proc_id; | |
365 | V9fsString client_id; | |
366 | } V9fsGetlock; | |
367 | ||
7a462745 AK |
368 | extern int open_fd_hw; |
369 | extern int total_open_fd; | |
370 | ||
64b85a8f BS |
371 | size_t pdu_packunpack(void *addr, struct iovec *sg, int sg_count, |
372 | size_t offset, size_t size, int pack); | |
9f107513 AL |
373 | |
374 | static inline size_t do_pdu_unpack(void *dst, struct iovec *sg, int sg_count, | |
375 | size_t offset, size_t size) | |
376 | { | |
377 | return pdu_packunpack(dst, sg, sg_count, offset, size, 0); | |
378 | } | |
379 | ||
f4f61d27 | 380 | extern void handle_9p_output(VirtIODevice *vdev, VirtQueue *vq); |
7a462745 AK |
381 | extern void virtio_9p_set_fd_limit(void); |
382 | extern void v9fs_reclaim_fd(V9fsState *s); | |
9f107513 | 383 | #endif |