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12046 Provide /proc/<PID>/fdinfo/
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--- old/usr/src/uts/common/fs/proc/prdata.h
+++ new/usr/src/uts/common/fs/proc/prdata.h
1 1 /*
2 2 * CDDL HEADER START
3 3 *
4 4 * The contents of this file are subject to the terms of the
5 5 * Common Development and Distribution License (the "License").
6 6 * You may not use this file except in compliance with the License.
7 7 *
8 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 9 * or http://www.opensolaris.org/os/licensing.
10 10 * See the License for the specific language governing permissions
11 11 * and limitations under the License.
12 12 *
13 13 * When distributing Covered Code, include this CDDL HEADER in each
14 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 15 * If applicable, add the following below this CDDL HEADER, with the
16 16 * fields enclosed by brackets "[]" replaced with your own identifying
17 17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 18 *
19 19 * CDDL HEADER END
20 20 */
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21 21 /*
22 22 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
23 23 * Use is subject to license terms.
24 24 */
25 25
26 26 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
27 27 /* All Rights Reserved */
28 28
29 29 /*
30 30 * Copyright 2018 Joyent, Inc.
31 + * Copyright 2019 OmniOS Community Edition (OmniOSce) Association.
31 32 */
32 33
33 34 #ifndef _SYS_PROC_PRDATA_H
34 35 #define _SYS_PROC_PRDATA_H
35 36
36 37 #include <sys/isa_defs.h>
37 38 #include <sys/proc.h>
38 39 #include <sys/vnode.h>
39 40 #include <sys/prsystm.h>
40 41 #include <sys/model.h>
41 42 #include <sys/poll.h>
42 43 #include <sys/list.h>
43 44
44 45 #ifdef __cplusplus
45 46 extern "C" {
46 47 #endif
47 48
48 49 /*
49 50 * Test for thread being stopped, not on an event of interest,
50 51 * but with a directed stop in effect.
51 52 */
52 53 #define DSTOPPED(t) \
53 54 ((t)->t_state == TS_STOPPED && \
54 55 ((t)->t_proc_flag & TP_PRSTOP))
55 56
56 57 #define round4(r) (((r) + 3) & (~3))
57 58 #define round8(r) (((r) + 7) & (~7))
58 59 #define round16(r) (((r) + 15) & (~15))
59 60 #define roundlong(r) (((r) + sizeof (long) - 1) & (~(sizeof (long) - 1)))
60 61
61 62 #define PNSIZ 10 /* max size of /proc name entries */
62 63 #define PLNSIZ 10 /* max size of /proc lwp name entries */
63 64
64 65 /*
65 66 * Common file object to which all /proc vnodes for a specific process
66 67 * or lwp refer. One for the process, one for each lwp.
67 68 */
68 69 typedef struct prcommon {
69 70 kmutex_t prc_mutex; /* to wait for the proc/lwp to stop */
70 71 kcondvar_t prc_wait; /* to wait for the proc/lwp to stop */
71 72 ushort_t prc_flags; /* flags */
72 73 uint_t prc_writers; /* number of write opens of prnodes */
73 74 uint_t prc_selfopens; /* number of write opens by self */
74 75 pid_t prc_pid; /* process id */
75 76 model_t prc_datamodel; /* data model of the process */
76 77 proc_t *prc_proc; /* process being traced */
77 78 kthread_t *prc_thread; /* thread (lwp) being traced */
78 79 int prc_slot; /* procdir slot number */
79 80 id_t prc_tid; /* thread (lwp) id */
80 81 int prc_tslot; /* lwpdir slot number, -1 if reaped */
81 82 int prc_refcnt; /* this structure's reference count */
82 83 struct pollhead prc_pollhead; /* list of all pollers */
83 84 } prcommon_t;
84 85
85 86 /* prc_flags */
86 87 #define PRC_DESTROY 0x01 /* process or lwp is being destroyed */
87 88 #define PRC_LWP 0x02 /* structure refers to an lwp */
88 89 #define PRC_SYS 0x04 /* process is a system process */
89 90 #define PRC_POLL 0x08 /* poll() in progress on this process/lwp */
90 91 #define PRC_EXCL 0x10 /* exclusive access granted (old /proc) */
91 92
92 93 /*
93 94 * Macros for mapping between i-numbers and pids.
94 95 */
95 96 #define pmkino(tslot, pslot, nodetype) \
96 97 (((((ino_t)(tslot) << nproc_highbit) | \
97 98 (ino_t)(pslot)) << 6) | \
98 99 (nodetype) + 2)
99 100
100 101 /* for old /proc interface */
101 102 #define PRBIAS 64
102 103 #define ptoi(n) ((int)(((n) + PRBIAS))) /* pid to i-number */
103 104
104 105 /*
105 106 * Node types for /proc files (directories and files contained therein).
106 107 */
107 108 typedef enum prnodetype {
108 109 PR_PROCDIR, /* /proc */
109 110 PR_SELF, /* /proc/self */
110 111 PR_PIDDIR, /* /proc/<pid> */
111 112 PR_AS, /* /proc/<pid>/as */
112 113 PR_CTL, /* /proc/<pid>/ctl */
113 114 PR_STATUS, /* /proc/<pid>/status */
114 115 PR_LSTATUS, /* /proc/<pid>/lstatus */
115 116 PR_PSINFO, /* /proc/<pid>/psinfo */
116 117 PR_LPSINFO, /* /proc/<pid>/lpsinfo */
117 118 PR_MAP, /* /proc/<pid>/map */
118 119 PR_RMAP, /* /proc/<pid>/rmap */
119 120 PR_XMAP, /* /proc/<pid>/xmap */
120 121 PR_CRED, /* /proc/<pid>/cred */
121 122 PR_SIGACT, /* /proc/<pid>/sigact */
122 123 PR_AUXV, /* /proc/<pid>/auxv */
123 124 #if defined(__i386) || defined(__amd64)
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124 125 PR_LDT, /* /proc/<pid>/ldt */
125 126 #endif
126 127 PR_USAGE, /* /proc/<pid>/usage */
127 128 PR_LUSAGE, /* /proc/<pid>/lusage */
128 129 PR_PAGEDATA, /* /proc/<pid>/pagedata */
129 130 PR_WATCH, /* /proc/<pid>/watch */
130 131 PR_CURDIR, /* /proc/<pid>/cwd */
131 132 PR_ROOTDIR, /* /proc/<pid>/root */
132 133 PR_FDDIR, /* /proc/<pid>/fd */
133 134 PR_FD, /* /proc/<pid>/fd/nn */
135 + PR_FDINFODIR, /* /proc/<pid>/fdinfo */
136 + PR_FDINFO, /* /proc/<pid>/fdinfo/nn */
134 137 PR_OBJECTDIR, /* /proc/<pid>/object */
135 138 PR_OBJECT, /* /proc/<pid>/object/xxx */
136 139 PR_LWPDIR, /* /proc/<pid>/lwp */
137 140 PR_LWPIDDIR, /* /proc/<pid>/lwp/<lwpid> */
138 141 PR_LWPCTL, /* /proc/<pid>/lwp/<lwpid>/lwpctl */
139 142 PR_LWPNAME, /* /proc/<pid>/lwp/<lwpid>/lwpname */
140 143 PR_LWPSTATUS, /* /proc/<pid>/lwp/<lwpid>/lwpstatus */
141 144 PR_LWPSINFO, /* /proc/<pid>/lwp/<lwpid>/lwpsinfo */
142 145 PR_LWPUSAGE, /* /proc/<pid>/lwp/<lwpid>/lwpusage */
143 146 PR_XREGS, /* /proc/<pid>/lwp/<lwpid>/xregs */
144 147 PR_TMPLDIR, /* /proc/<pid>/lwp/<lwpid>/templates */
145 148 PR_TMPL, /* /proc/<pid>/lwp/<lwpid>/templates/<id> */
146 149 PR_SPYMASTER, /* /proc/<pid>/lwp/<lwpid>/spymaster */
147 150 #if defined(__sparc)
148 151 PR_GWINDOWS, /* /proc/<pid>/lwp/<lwpid>/gwindows */
149 152 PR_ASRS, /* /proc/<pid>/lwp/<lwpid>/asrs */
150 153 #endif
151 154 PR_PRIV, /* /proc/<pid>/priv */
152 155 PR_PATHDIR, /* /proc/<pid>/path */
153 156 PR_PATH, /* /proc/<pid>/path/xxx */
154 157 PR_CTDIR, /* /proc/<pid>/contracts */
155 158 PR_CT, /* /proc/<pid>/contracts/<ctid> */
156 159 PR_SECFLAGS, /* /proc/<pid>/secflags */
157 160 PR_PIDFILE, /* old process file */
158 161 PR_LWPIDFILE, /* old lwp file */
159 162 PR_OPAGEDATA, /* old page data file */
160 163 PR_NFILES /* number of /proc node types */
161 164 } prnodetype_t;
162 165
163 166 typedef struct prnode {
164 167 vnode_t *pr_next; /* list of all vnodes for process */
165 168 uint_t pr_flags; /* private flags */
166 169 kmutex_t pr_mutex; /* locks pr_files and child pr_flags */
167 170 prnodetype_t pr_type; /* node type */
168 171 mode_t pr_mode; /* file mode */
169 172 ino_t pr_ino; /* node id (for stat(2)) */
170 173 uint_t pr_hatid; /* hat layer id for page data files */
171 174 prcommon_t *pr_common; /* common data structure */
172 175 prcommon_t *pr_pcommon; /* process common data structure */
173 176 vnode_t *pr_parent; /* parent directory */
174 177 vnode_t **pr_files; /* contained files array (directory) */
175 178 uint_t pr_index; /* position within parent */
176 179 vnode_t *pr_pidfile; /* substitute vnode for old /proc */
177 180 vnode_t *pr_realvp; /* real vnode, file in object,fd dirs */
178 181 proc_t *pr_owner; /* the process that created this node */
179 182 vnode_t *pr_vnode; /* pointer to vnode */
180 183 struct contract *pr_contract; /* contract pointer */
181 184 int pr_cttype; /* active template type */
182 185 } prnode_t;
183 186
184 187 /*
185 188 * Values for pr_flags.
186 189 */
187 190 #define PR_INVAL 0x01 /* vnode is invalidated */
188 191 #define PR_ISSELF 0x02 /* vnode is a self-open */
189 192 #define PR_AOUT 0x04 /* vnode is for an a.out path */
190 193 #define PR_OFFMAX 0x08 /* vnode is a large file open */
191 194
192 195 /*
193 196 * Conversion macros.
194 197 */
195 198 #define VTOP(vp) ((struct prnode *)(vp)->v_data)
196 199 #define PTOV(pnp) ((pnp)->pr_vnode)
197 200
198 201 /*
199 202 * Flags to prlock().
200 203 */
201 204 #define ZNO 0 /* Fail on encountering a zombie process. */
202 205 #define ZYES 1 /* Allow zombies. */
203 206
204 207 /*
205 208 * Assign one set to another (possible different sizes).
206 209 *
207 210 * Assigning to a smaller set causes members to be lost.
208 211 * Assigning to a larger set causes extra members to be cleared.
209 212 */
210 213 #define prassignset(ap, sp) \
211 214 { \
212 215 register int _i_ = sizeof (*(ap))/sizeof (uint32_t); \
213 216 while (--_i_ >= 0) \
214 217 ((uint32_t *)(ap))[_i_] = \
215 218 (_i_ >= sizeof (*(sp))/sizeof (uint32_t)) ? \
216 219 0 : ((uint32_t *)(sp))[_i_]; \
217 220 }
218 221
219 222 /*
220 223 * Determine whether or not a set (of arbitrary size) is empty.
221 224 */
222 225 #define prisempty(sp) \
223 226 setisempty((uint32_t *)(sp), \
224 227 (uint_t)(sizeof (*(sp)) / sizeof (uint32_t)))
225 228
226 229 /*
227 230 * Resource usage with times as hrtime_t rather than timestruc_t.
228 231 * Each member exactly matches the corresponding member in prusage_t.
229 232 * This is for convenience of internal computation.
230 233 */
231 234 typedef struct prhusage {
232 235 id_t pr_lwpid; /* lwp id. 0: process or defunct */
233 236 int pr_count; /* number of contributing lwps */
234 237 hrtime_t pr_tstamp; /* current time stamp */
235 238 hrtime_t pr_create; /* process/lwp creation time stamp */
236 239 hrtime_t pr_term; /* process/lwp termination time stamp */
237 240 hrtime_t pr_rtime; /* total lwp real (elapsed) time */
238 241 hrtime_t pr_utime; /* user level CPU time */
239 242 hrtime_t pr_stime; /* system call CPU time */
240 243 hrtime_t pr_ttime; /* other system trap CPU time */
241 244 hrtime_t pr_tftime; /* text page fault sleep time */
242 245 hrtime_t pr_dftime; /* data page fault sleep time */
243 246 hrtime_t pr_kftime; /* kernel page fault sleep time */
244 247 hrtime_t pr_ltime; /* user lock wait sleep time */
245 248 hrtime_t pr_slptime; /* all other sleep time */
246 249 hrtime_t pr_wtime; /* wait-cpu (latency) time */
247 250 hrtime_t pr_stoptime; /* stopped time */
248 251 hrtime_t filltime[6]; /* filler for future expansion */
249 252 uint64_t pr_minf; /* minor page faults */
250 253 uint64_t pr_majf; /* major page faults */
251 254 uint64_t pr_nswap; /* swaps */
252 255 uint64_t pr_inblk; /* input blocks */
253 256 uint64_t pr_oublk; /* output blocks */
254 257 uint64_t pr_msnd; /* messages sent */
255 258 uint64_t pr_mrcv; /* messages received */
256 259 uint64_t pr_sigs; /* signals received */
257 260 uint64_t pr_vctx; /* voluntary context switches */
258 261 uint64_t pr_ictx; /* involuntary context switches */
259 262 uint64_t pr_sysc; /* system calls */
260 263 uint64_t pr_ioch; /* chars read and written */
261 264 uint64_t filler[10]; /* filler for future expansion */
262 265 } prhusage_t;
263 266
264 267 #if defined(_KERNEL)
265 268
266 269 /* Exclude system processes from this test */
267 270 #define PROCESS_NOT_32BIT(p) \
268 271 (!((p)->p_flag & SSYS) && (p)->p_as != &kas && \
269 272 (p)->p_model != DATAMODEL_ILP32)
270 273
271 274 extern int prnwatch; /* number of supported watchpoints */
272 275 extern int nproc_highbit; /* highbit(v.v_nproc) */
273 276
274 277 extern struct vnodeops *prvnodeops;
275 278
276 279 /*
277 280 * Generic chained copyout buffers for procfs use.
278 281 * In order to prevent procfs from making huge oversize kmem_alloc calls,
279 282 * a list of smaller buffers can be concatenated and copied to userspace in
280 283 * sequence.
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281 284 *
282 285 * The implementation is opaque.
283 286 *
284 287 * A user of this will perform the following steps:
285 288 *
286 289 * list_t listhead;
287 290 * struct my *mp;
288 291 *
289 292 * pr_iol_initlist(&listhead, sizeof (*mp), n);
290 293 * while (whatever) {
291 - * mp = pr_iol_newbuf(&listhead, sizeof (*mp);
294 + * mp = pr_iol_newbuf(&listhead, sizeof (*mp));
292 295 * ...
293 296 * error = ...
294 297 * }
295 298 *
296 299 * When done, depending on whether copyout() or uiomove() is supposed to
297 300 * be used for transferring the buffered data to userspace, call either:
298 301 *
299 302 * error = pr_iol_copyout_and_free(&listhead, &cmaddr, error);
300 303 *
301 304 * or else:
302 305 *
303 306 * error = pr_iol_uiomove_and_free(&listhead, uiop, error);
304 307 *
305 308 * These two functions will in any case kmem_free() all list items, but
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306 309 * if an error occurred before they will not perform the copyout/uiomove.
307 310 * If copyout/uiomove are done, the passed target address / uio_t
308 311 * are updated. The error returned will either be the one passed in, or
309 312 * the error that occurred during copyout/uiomove.
310 313 */
311 314
312 315 extern void pr_iol_initlist(list_t *head, size_t itemsize, int nitems);
313 316 extern void * pr_iol_newbuf(list_t *head, size_t itemsize);
314 317 extern int pr_iol_copyout_and_free(list_t *head, caddr_t *tgt, int errin);
315 318 extern int pr_iol_uiomove_and_free(list_t *head, uio_t *uiop, int errin);
319 +extern void pr_iol_freelist(list_t *);
316 320
317 321 #if defined(_SYSCALL32_IMPL)
318 322
319 323 extern int prwritectl32(vnode_t *, struct uio *, cred_t *);
320 324 extern void prgetaction32(proc_t *, user_t *, uint_t, struct sigaction32 *);
321 325 extern void prcvtusage32(struct prhusage *, prusage32_t *);
322 326
323 327 #endif /* _SYSCALL32_IMPL */
324 328
325 329 /* kludge to support old /proc interface */
326 330 #if !defined(_SYS_OLD_PROCFS_H)
327 331 extern int prgetmap(proc_t *, int, list_t *);
328 332 extern int prgetxmap(proc_t *, list_t *);
329 333 #if defined(_SYSCALL32_IMPL)
330 334 extern int prgetmap32(proc_t *, int, list_t *);
331 335 extern int prgetxmap32(proc_t *, list_t *);
332 336 #endif /* _SYSCALL32_IMPL */
333 337 #endif /* !_SYS_OLD_PROCFS_H */
334 338
335 339 extern proc_t *pr_p_lock(prnode_t *);
336 340 extern kthread_t *pr_thread(prnode_t *);
337 341 extern void pr_stop(prnode_t *);
338 342 extern int pr_wait_stop(prnode_t *, time_t);
339 343 extern int pr_setrun(prnode_t *, ulong_t);
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340 344 extern int pr_wait(prcommon_t *, timestruc_t *, int);
341 345 extern void pr_wait_die(prnode_t *);
342 346 extern int pr_setsig(prnode_t *, siginfo_t *);
343 347 extern int pr_kill(prnode_t *, int, cred_t *);
344 348 extern int pr_unkill(prnode_t *, int);
345 349 extern int pr_nice(proc_t *, int, cred_t *);
346 350 extern void pr_setentryexit(proc_t *, sysset_t *, int);
347 351 extern int pr_set(proc_t *, long);
348 352 extern int pr_unset(proc_t *, long);
349 353 extern void pr_sethold(prnode_t *, sigset_t *);
354 +extern file_t *pr_getf(proc_t *, uint_t, short *);
355 +extern void pr_releasef(proc_t *, uint_t);
350 356 extern void pr_setfault(proc_t *, fltset_t *);
351 357 extern int prusrio(proc_t *, enum uio_rw, struct uio *, int);
352 358 extern int prwritectl(vnode_t *, struct uio *, cred_t *);
353 359 extern int prlock(prnode_t *, int);
354 360 extern void prunmark(proc_t *);
355 361 extern void prunlock(prnode_t *);
356 362 extern size_t prpdsize(struct as *);
357 363 extern int prpdread(proc_t *, uint_t, struct uio *);
358 364 extern size_t oprpdsize(struct as *);
359 365 extern int oprpdread(struct as *, uint_t, struct uio *);
360 366 extern void prgetaction(proc_t *, user_t *, uint_t, struct sigaction *);
361 367 extern void prgetusage(kthread_t *, struct prhusage *);
362 368 extern void praddusage(kthread_t *, struct prhusage *);
363 369 extern void prcvtusage(struct prhusage *, prusage_t *);
364 370 extern void prscaleusage(prhusage_t *);
365 371 extern kthread_t *prchoose(proc_t *);
366 372 extern void allsetrun(proc_t *);
367 373 extern int setisempty(uint32_t *, uint_t);
368 374 extern int pr_u32tos(uint32_t, char *, int);
369 375 extern vnode_t *prlwpnode(prnode_t *, uint_t);
370 376 extern prnode_t *prgetnode(vnode_t *, prnodetype_t);
371 377 extern void prfreenode(prnode_t *);
372 378 extern void pr_object_name(char *, vnode_t *, struct vattr *);
373 379 extern int set_watched_area(proc_t *, struct watched_area *);
374 380 extern int clear_watched_area(proc_t *, struct watched_area *);
375 381 extern void pr_free_watchpoints(proc_t *);
376 382 extern proc_t *pr_cancel_watch(prnode_t *);
377 383 extern struct seg *break_seg(proc_t *);
378 384
379 385 /*
380 386 * Machine-dependent routines (defined in prmachdep.c).
381 387 */
382 388 extern void prgetprregs(klwp_t *, prgregset_t);
383 389 extern void prsetprregs(klwp_t *, prgregset_t, int);
384 390
385 391 #if defined(_SYSCALL32_IMPL)
386 392 extern void prgetprregs32(klwp_t *, prgregset32_t);
387 393 extern void prgregset_32ton(klwp_t *, prgregset32_t, prgregset_t);
388 394 extern void prgetprfpregs32(klwp_t *, prfpregset32_t *);
389 395 extern void prsetprfpregs32(klwp_t *, prfpregset32_t *);
390 396 extern size_t prpdsize32(struct as *);
391 397 extern int prpdread32(proc_t *, uint_t, struct uio *);
392 398 extern size_t oprpdsize32(struct as *);
393 399 extern int oprpdread32(struct as *, uint_t, struct uio *);
394 400 #endif /* _SYSCALL32_IMPL */
395 401
396 402 extern void prpokethread(kthread_t *t);
397 403 extern int prgetrvals(klwp_t *, long *, long *);
398 404 extern void prgetprfpregs(klwp_t *, prfpregset_t *);
399 405 extern void prsetprfpregs(klwp_t *, prfpregset_t *);
400 406 extern void prgetprxregs(klwp_t *, caddr_t);
401 407 extern void prsetprxregs(klwp_t *, caddr_t);
402 408 extern int prgetprxregsize(proc_t *);
403 409 extern int prhasfp(void);
404 410 extern int prhasx(proc_t *);
405 411 extern caddr_t prgetstackbase(proc_t *);
406 412 extern caddr_t prgetpsaddr(proc_t *);
407 413 extern int prisstep(klwp_t *);
408 414 extern void prsvaddr(klwp_t *, caddr_t);
409 415 extern int prfetchinstr(klwp_t *, ulong_t *);
410 416 extern ushort_t prgetpctcpu(uint64_t);
411 417
412 418 #endif /* _KERNEL */
413 419
414 420 #ifdef __cplusplus
415 421 }
416 422 #endif
417 423
418 424 #endif /* _SYS_PROC_PRDATA_H */
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