1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 * 26 * Portions Copyright 2007 Chad Mynhier 27 */ 28 29 /* 30 * Interfaces available from the process control library, libproc. 31 * 32 * libproc provides process control functions for the /proc tools 33 * (commands in /usr/proc/bin), /usr/bin/truss, and /usr/bin/gcore. 34 * libproc is a private support library for these commands only. 35 * It is _not_ a public interface, although it might become one 36 * in the fullness of time, when the interfaces settle down. 37 * 38 * In the meantime, be aware that any program linked with libproc in this 39 * release of Solaris is almost guaranteed to break in the next release. 40 * 41 * In short, do not use this header file or libproc for any purpose. 42 */ 43 44 #ifndef _LIBPROC_H 45 #define _LIBPROC_H 46 47 #include <stdlib.h> 48 #include <unistd.h> 49 #include <fcntl.h> 50 #include <nlist.h> 51 #include <door.h> 52 #include <gelf.h> 53 #include <proc_service.h> 54 #include <rtld_db.h> 55 #include <procfs.h> 56 #include <rctl.h> 57 #include <libctf.h> 58 #include <sys/stat.h> 59 #include <sys/statvfs.h> 60 #include <sys/auxv.h> 61 #include <sys/resource.h> 62 #include <sys/socket.h> 63 #include <sys/utsname.h> 64 #include <sys/corectl.h> 65 #if defined(__i386) || defined(__amd64) 66 #include <sys/sysi86.h> 67 #endif 68 69 #ifdef __cplusplus 70 extern "C" { 71 #endif 72 73 /* 74 * Opaque structure tag reference to a process control structure. 75 * Clients of libproc cannot look inside the process control structure. 76 * The implementation of struct ps_prochandle can change w/o affecting clients. 77 */ 78 struct ps_prochandle; 79 80 /* 81 * Opaque structure tag reference to an lwp control structure. 82 */ 83 struct ps_lwphandle; 84 85 extern int _libproc_debug; /* set non-zero to enable debugging fprintfs */ 86 extern int _libproc_no_qsort; /* set non-zero to inhibit sorting */ 87 /* of symbol tables */ 88 extern int _libproc_incore_elf; /* only use in-core elf data */ 89 90 #if defined(__sparc) 91 #define R_RVAL1 R_O0 /* register holding a function return value */ 92 #define R_RVAL2 R_O1 /* 32 more bits for a 64-bit return value */ 93 #endif /* __sparc */ 94 95 #if defined(__amd64) 96 #define R_PC REG_RIP 97 #define R_SP REG_RSP 98 #define R_RVAL1 REG_RAX /* register holding a function return value */ 99 #define R_RVAL2 REG_RDX /* 32 more bits for a 64-bit return value */ 100 #elif defined(__i386) 101 #define R_PC EIP 102 #define R_SP UESP 103 #define R_RVAL1 EAX /* register holding a function return value */ 104 #define R_RVAL2 EDX /* 32 more bits for a 64-bit return value */ 105 #endif /* __amd64 || __i386 */ 106 107 #define R_RVAL R_RVAL1 /* simple function return value register */ 108 109 /* maximum sizes of things */ 110 #define PRMAXSIG (32 * sizeof (sigset_t) / sizeof (uint32_t)) 111 #define PRMAXFAULT (32 * sizeof (fltset_t) / sizeof (uint32_t)) 112 #define PRMAXSYS (32 * sizeof (sysset_t) / sizeof (uint32_t)) 113 114 /* State values returned by Pstate() */ 115 #define PS_RUN 1 /* process is running */ 116 #define PS_STOP 2 /* process is stopped */ 117 #define PS_LOST 3 /* process is lost to control (EAGAIN) */ 118 #define PS_UNDEAD 4 /* process is terminated (zombie) */ 119 #define PS_DEAD 5 /* process is terminated (core file) */ 120 #define PS_IDLE 6 /* process has not been run */ 121 122 /* Flags accepted by Pgrab() */ 123 #define PGRAB_RETAIN 0x01 /* Retain tracing flags, else clear flags */ 124 #define PGRAB_FORCE 0x02 /* Open the process w/o O_EXCL */ 125 #define PGRAB_RDONLY 0x04 /* Open the process or core w/ O_RDONLY */ 126 #define PGRAB_NOSTOP 0x08 /* Open the process but do not stop it */ 127 128 /* Error codes from Pcreate() */ 129 #define C_STRANGE -1 /* Unanticipated error, errno is meaningful */ 130 #define C_FORK 1 /* Unable to fork */ 131 #define C_PERM 2 /* No permission (file set-id or unreadable) */ 132 #define C_NOEXEC 3 /* Cannot execute file */ 133 #define C_INTR 4 /* Interrupt received while creating */ 134 #define C_LP64 5 /* Program is _LP64, self is _ILP32 */ 135 #define C_NOENT 6 /* Cannot find executable file */ 136 137 /* Error codes from Pgrab(), Pfgrab_core(), and Pgrab_core() */ 138 #define G_STRANGE -1 /* Unanticipated error, errno is meaningful */ 139 #define G_NOPROC 1 /* No such process */ 140 #define G_NOCORE 2 /* No such core file */ 141 #define G_NOPROCORCORE 3 /* No such proc or core (for proc_arg_grab) */ 142 #define G_NOEXEC 4 /* Cannot locate executable file */ 143 #define G_ZOMB 5 /* Zombie process */ 144 #define G_PERM 6 /* No permission */ 145 #define G_BUSY 7 /* Another process has control */ 146 #define G_SYS 8 /* System process */ 147 #define G_SELF 9 /* Process is self */ 148 #define G_INTR 10 /* Interrupt received while grabbing */ 149 #define G_LP64 11 /* Process is _LP64, self is ILP32 */ 150 #define G_FORMAT 12 /* File is not an ELF format core file */ 151 #define G_ELF 13 /* Libelf error, elf_errno() is meaningful */ 152 #define G_NOTE 14 /* Required PT_NOTE Phdr not present in core */ 153 #define G_ISAINVAL 15 /* Wrong ELF machine type */ 154 #define G_BADLWPS 16 /* Bad '/lwps' specification */ 155 #define G_NOFD 17 /* No more file descriptors */ 156 157 158 /* Flags accepted by Prelease */ 159 #define PRELEASE_CLEAR 0x10 /* Clear all tracing flags */ 160 #define PRELEASE_RETAIN 0x20 /* Retain final tracing flags */ 161 #define PRELEASE_HANG 0x40 /* Leave the process stopped */ 162 #define PRELEASE_KILL 0x80 /* Terminate the process */ 163 164 typedef struct { /* argument descriptor for system call (Psyscall) */ 165 long arg_value; /* value of argument given to system call */ 166 void *arg_object; /* pointer to object in controlling process */ 167 char arg_type; /* AT_BYVAL, AT_BYREF */ 168 char arg_inout; /* AI_INPUT, AI_OUTPUT, AI_INOUT */ 169 ushort_t arg_size; /* if AT_BYREF, size of object in bytes */ 170 } argdes_t; 171 172 /* values for type */ 173 #define AT_BYVAL 1 174 #define AT_BYREF 2 175 176 /* values for inout */ 177 #define AI_INPUT 1 178 #define AI_OUTPUT 2 179 #define AI_INOUT 3 180 181 /* maximum number of syscall arguments */ 182 #define MAXARGS 8 183 184 /* maximum size in bytes of a BYREF argument */ 185 #define MAXARGL (4*1024) 186 187 /* 188 * Function prototypes for routines in the process control package. 189 */ 190 extern struct ps_prochandle *Pcreate(const char *, char *const *, 191 int *, char *, size_t); 192 extern struct ps_prochandle *Pxcreate(const char *, char *const *, 193 char *const *, int *, char *, size_t); 194 195 extern const char *Pcreate_error(int); 196 197 extern struct ps_prochandle *Pgrab(pid_t, int, int *); 198 extern struct ps_prochandle *Pgrab_core(const char *, const char *, int, int *); 199 extern struct ps_prochandle *Pfgrab_core(int, const char *, int *); 200 extern struct ps_prochandle *Pgrab_file(const char *, int *); 201 extern const char *Pgrab_error(int); 202 203 extern int Preopen(struct ps_prochandle *); 204 extern void Prelease(struct ps_prochandle *, int); 205 extern void Pfree(struct ps_prochandle *); 206 207 extern int Pasfd(struct ps_prochandle *); 208 extern char *Pbrandname(struct ps_prochandle *, char *, size_t); 209 extern int Pctlfd(struct ps_prochandle *); 210 extern int Pcreate_agent(struct ps_prochandle *); 211 extern void Pdestroy_agent(struct ps_prochandle *); 212 extern int Pstopstatus(struct ps_prochandle *, long, uint_t); 213 extern int Pwait(struct ps_prochandle *, uint_t); 214 extern int Pstop(struct ps_prochandle *, uint_t); 215 extern int Pdstop(struct ps_prochandle *); 216 extern int Pstate(struct ps_prochandle *); 217 extern const psinfo_t *Ppsinfo(struct ps_prochandle *); 218 extern const pstatus_t *Pstatus(struct ps_prochandle *); 219 extern int Pcred(struct ps_prochandle *, prcred_t *, int); 220 extern int Psetcred(struct ps_prochandle *, const prcred_t *); 221 extern ssize_t Ppriv(struct ps_prochandle *, prpriv_t *, size_t); 222 extern int Psetpriv(struct ps_prochandle *, prpriv_t *); 223 extern void *Pprivinfo(struct ps_prochandle *); 224 extern int Psetzoneid(struct ps_prochandle *, zoneid_t); 225 extern int Pgetareg(struct ps_prochandle *, int, prgreg_t *); 226 extern int Pputareg(struct ps_prochandle *, int, prgreg_t); 227 extern int Psetrun(struct ps_prochandle *, int, int); 228 extern ssize_t Pread(struct ps_prochandle *, void *, size_t, uintptr_t); 229 extern ssize_t Pread_string(struct ps_prochandle *, char *, size_t, uintptr_t); 230 extern ssize_t Pwrite(struct ps_prochandle *, const void *, size_t, uintptr_t); 231 extern int Pclearsig(struct ps_prochandle *); 232 extern int Pclearfault(struct ps_prochandle *); 233 extern int Psetbkpt(struct ps_prochandle *, uintptr_t, ulong_t *); 234 extern int Pdelbkpt(struct ps_prochandle *, uintptr_t, ulong_t); 235 extern int Pxecbkpt(struct ps_prochandle *, ulong_t); 236 extern int Psetwapt(struct ps_prochandle *, const prwatch_t *); 237 extern int Pdelwapt(struct ps_prochandle *, const prwatch_t *); 238 extern int Pxecwapt(struct ps_prochandle *, const prwatch_t *); 239 extern int Psetflags(struct ps_prochandle *, long); 240 extern int Punsetflags(struct ps_prochandle *, long); 241 extern int Psignal(struct ps_prochandle *, int, int); 242 extern int Pfault(struct ps_prochandle *, int, int); 243 extern int Psysentry(struct ps_prochandle *, int, int); 244 extern int Psysexit(struct ps_prochandle *, int, int); 245 extern void Psetsignal(struct ps_prochandle *, const sigset_t *); 246 extern void Psetfault(struct ps_prochandle *, const fltset_t *); 247 extern void Psetsysentry(struct ps_prochandle *, const sysset_t *); 248 extern void Psetsysexit(struct ps_prochandle *, const sysset_t *); 249 250 extern void Psync(struct ps_prochandle *); 251 extern int Psyscall(struct ps_prochandle *, sysret_t *, 252 int, uint_t, argdes_t *); 253 extern int Pisprocdir(struct ps_prochandle *, const char *); 254 255 /* 256 * Function prototypes for lwp-specific operations. 257 */ 258 extern struct ps_lwphandle *Lgrab(struct ps_prochandle *, lwpid_t, int *); 259 extern const char *Lgrab_error(int); 260 261 extern struct ps_prochandle *Lprochandle(struct ps_lwphandle *); 262 extern void Lfree(struct ps_lwphandle *); 263 264 extern int Lctlfd(struct ps_lwphandle *); 265 extern int Lwait(struct ps_lwphandle *, uint_t); 266 extern int Lstop(struct ps_lwphandle *, uint_t); 267 extern int Ldstop(struct ps_lwphandle *); 268 extern int Lstate(struct ps_lwphandle *); 269 extern const lwpsinfo_t *Lpsinfo(struct ps_lwphandle *); 270 extern const lwpstatus_t *Lstatus(struct ps_lwphandle *); 271 extern int Lgetareg(struct ps_lwphandle *, int, prgreg_t *); 272 extern int Lputareg(struct ps_lwphandle *, int, prgreg_t); 273 extern int Lsetrun(struct ps_lwphandle *, int, int); 274 extern int Lclearsig(struct ps_lwphandle *); 275 extern int Lclearfault(struct ps_lwphandle *); 276 extern int Lxecbkpt(struct ps_lwphandle *, ulong_t); 277 extern int Lxecwapt(struct ps_lwphandle *, const prwatch_t *); 278 extern void Lsync(struct ps_lwphandle *); 279 280 extern int Lstack(struct ps_lwphandle *, stack_t *); 281 extern int Lmain_stack(struct ps_lwphandle *, stack_t *); 282 extern int Lalt_stack(struct ps_lwphandle *, stack_t *); 283 284 /* 285 * Function prototypes for system calls forced on the victim process. 286 */ 287 extern int pr_open(struct ps_prochandle *, const char *, int, mode_t); 288 extern int pr_creat(struct ps_prochandle *, const char *, mode_t); 289 extern int pr_close(struct ps_prochandle *, int); 290 extern int pr_access(struct ps_prochandle *, const char *, int); 291 extern int pr_door_info(struct ps_prochandle *, int, struct door_info *); 292 extern void *pr_mmap(struct ps_prochandle *, 293 void *, size_t, int, int, int, off_t); 294 extern void *pr_zmap(struct ps_prochandle *, 295 void *, size_t, int, int); 296 extern int pr_munmap(struct ps_prochandle *, void *, size_t); 297 extern int pr_memcntl(struct ps_prochandle *, 298 caddr_t, size_t, int, caddr_t, int, int); 299 extern int pr_meminfo(struct ps_prochandle *, const uint64_t *addrs, 300 int addr_count, const uint_t *info, int info_count, 301 uint64_t *outdata, uint_t *validity); 302 extern int pr_sigaction(struct ps_prochandle *, 303 int, const struct sigaction *, struct sigaction *); 304 extern int pr_getitimer(struct ps_prochandle *, 305 int, struct itimerval *); 306 extern int pr_setitimer(struct ps_prochandle *, 307 int, const struct itimerval *, struct itimerval *); 308 extern int pr_ioctl(struct ps_prochandle *, int, int, void *, size_t); 309 extern int pr_fcntl(struct ps_prochandle *, int, int, void *); 310 extern int pr_stat(struct ps_prochandle *, const char *, struct stat *); 311 extern int pr_lstat(struct ps_prochandle *, const char *, struct stat *); 312 extern int pr_fstat(struct ps_prochandle *, int, struct stat *); 313 extern int pr_stat64(struct ps_prochandle *, const char *, 314 struct stat64 *); 315 extern int pr_lstat64(struct ps_prochandle *, const char *, 316 struct stat64 *); 317 extern int pr_fstat64(struct ps_prochandle *, int, struct stat64 *); 318 extern int pr_statvfs(struct ps_prochandle *, const char *, statvfs_t *); 319 extern int pr_fstatvfs(struct ps_prochandle *, int, statvfs_t *); 320 extern projid_t pr_getprojid(struct ps_prochandle *Pr); 321 extern taskid_t pr_gettaskid(struct ps_prochandle *Pr); 322 extern taskid_t pr_settaskid(struct ps_prochandle *Pr, projid_t project, 323 int flags); 324 extern zoneid_t pr_getzoneid(struct ps_prochandle *Pr); 325 extern int pr_getrctl(struct ps_prochandle *, 326 const char *, rctlblk_t *, rctlblk_t *, int); 327 extern int pr_setrctl(struct ps_prochandle *, 328 const char *, rctlblk_t *, rctlblk_t *, int); 329 extern int pr_getrlimit(struct ps_prochandle *, 330 int, struct rlimit *); 331 extern int pr_setrlimit(struct ps_prochandle *, 332 int, const struct rlimit *); 333 extern int pr_setprojrctl(struct ps_prochandle *, const char *, 334 rctlblk_t *, size_t, int); 335 #if defined(_LARGEFILE64_SOURCE) 336 extern int pr_getrlimit64(struct ps_prochandle *, 337 int, struct rlimit64 *); 338 extern int pr_setrlimit64(struct ps_prochandle *, 339 int, const struct rlimit64 *); 340 #endif /* _LARGEFILE64_SOURCE */ 341 extern int pr_lwp_exit(struct ps_prochandle *); 342 extern int pr_exit(struct ps_prochandle *, int); 343 extern int pr_waitid(struct ps_prochandle *, 344 idtype_t, id_t, siginfo_t *, int); 345 extern off_t pr_lseek(struct ps_prochandle *, int, off_t, int); 346 extern offset_t pr_llseek(struct ps_prochandle *, int, offset_t, int); 347 extern int pr_rename(struct ps_prochandle *, const char *, const char *); 348 extern int pr_link(struct ps_prochandle *, const char *, const char *); 349 extern int pr_unlink(struct ps_prochandle *, const char *); 350 extern int pr_getpeername(struct ps_prochandle *, 351 int, struct sockaddr *, socklen_t *); 352 extern int pr_getsockname(struct ps_prochandle *, 353 int, struct sockaddr *, socklen_t *); 354 extern int pr_getsockopt(struct ps_prochandle *, 355 int, int, int, void *, int *); 356 extern int pr_processor_bind(struct ps_prochandle *, 357 idtype_t, id_t, int, int *); 358 359 /* 360 * Function prototypes for accessing per-LWP register information. 361 */ 362 extern int Plwp_getregs(struct ps_prochandle *, lwpid_t, prgregset_t); 363 extern int Plwp_setregs(struct ps_prochandle *, lwpid_t, const prgregset_t); 364 365 extern int Plwp_getfpregs(struct ps_prochandle *, lwpid_t, prfpregset_t *); 366 extern int Plwp_setfpregs(struct ps_prochandle *, lwpid_t, 367 const prfpregset_t *); 368 369 #if defined(__sparc) 370 371 extern int Plwp_getxregs(struct ps_prochandle *, lwpid_t, prxregset_t *); 372 extern int Plwp_setxregs(struct ps_prochandle *, lwpid_t, const prxregset_t *); 373 374 extern int Plwp_getgwindows(struct ps_prochandle *, lwpid_t, gwindows_t *); 375 376 #if defined(__sparcv9) 377 extern int Plwp_getasrs(struct ps_prochandle *, lwpid_t, asrset_t); 378 extern int Plwp_setasrs(struct ps_prochandle *, lwpid_t, const asrset_t); 379 #endif /* __sparcv9 */ 380 381 #endif /* __sparc */ 382 383 #if defined(__i386) || defined(__amd64) 384 extern int Pldt(struct ps_prochandle *, struct ssd *, int); 385 extern int proc_get_ldt(pid_t, struct ssd *, int); 386 #endif /* __i386 || __amd64 */ 387 388 extern int Plwp_getpsinfo(struct ps_prochandle *, lwpid_t, lwpsinfo_t *); 389 390 extern int Plwp_stack(struct ps_prochandle *, lwpid_t, stack_t *); 391 extern int Plwp_main_stack(struct ps_prochandle *, lwpid_t, stack_t *); 392 extern int Plwp_alt_stack(struct ps_prochandle *, lwpid_t, stack_t *); 393 394 /* 395 * LWP iteration interface; iterate over all active LWPs. 396 */ 397 typedef int proc_lwp_f(void *, const lwpstatus_t *); 398 extern int Plwp_iter(struct ps_prochandle *, proc_lwp_f *, void *); 399 400 /* 401 * LWP iteration interface; iterate over all LWPs, active and zombie. 402 */ 403 typedef int proc_lwp_all_f(void *, const lwpstatus_t *, const lwpsinfo_t *); 404 extern int Plwp_iter_all(struct ps_prochandle *, proc_lwp_all_f *, void *); 405 406 /* 407 * Process iteration interface; iterate over all non-system processes. 408 */ 409 typedef int proc_walk_f(psinfo_t *, lwpsinfo_t *, void *); 410 extern int proc_walk(proc_walk_f *, void *, int); 411 412 #define PR_WALK_PROC 0 /* walk processes only */ 413 #define PR_WALK_LWP 1 /* walk all lwps */ 414 415 /* 416 * Determine if an lwp is in a set as returned from proc_arg_xgrab(). 417 */ 418 extern int proc_lwp_in_set(const char *, lwpid_t); 419 extern int proc_lwp_range_valid(const char *); 420 421 /* 422 * Symbol table interfaces. 423 */ 424 425 /* 426 * Pseudo-names passed to Plookup_by_name() for well-known load objects. 427 * NOTE: It is required that PR_OBJ_EXEC and PR_OBJ_LDSO exactly match 428 * the definitions of PS_OBJ_EXEC and PS_OBJ_LDSO from <proc_service.h>. 429 */ 430 #define PR_OBJ_EXEC ((const char *)0) /* search the executable file */ 431 #define PR_OBJ_LDSO ((const char *)1) /* search ld.so.1 */ 432 #define PR_OBJ_EVERY ((const char *)-1) /* search every load object */ 433 434 /* 435 * Special Lmid_t passed to Plookup_by_lmid() to search all link maps. The 436 * special values LM_ID_BASE and LM_ID_LDSO from <link.h> may also be used. 437 * If PR_OBJ_EXEC is used as the object name, the lmid must be PR_LMID_EVERY 438 * or LM_ID_BASE in order to return a match. If PR_OBJ_LDSO is used as the 439 * object name, the lmid must be PR_LMID_EVERY or LM_ID_LDSO to return a match. 440 */ 441 #define PR_LMID_EVERY ((Lmid_t)-1UL) /* search every link map */ 442 443 /* 444 * 'object_name' is the name of a load object obtained from an 445 * iteration over the process's address space mappings (Pmapping_iter), 446 * or an iteration over the process's mapped objects (Pobject_iter), 447 * or else it is one of the special PR_OBJ_* values above. 448 */ 449 extern int Plookup_by_name(struct ps_prochandle *, 450 const char *, const char *, GElf_Sym *); 451 452 extern int Plookup_by_addr(struct ps_prochandle *, 453 uintptr_t, char *, size_t, GElf_Sym *); 454 455 typedef struct prsyminfo { 456 const char *prs_object; /* object name */ 457 const char *prs_name; /* symbol name */ 458 Lmid_t prs_lmid; /* link map id */ 459 uint_t prs_id; /* symbol id */ 460 uint_t prs_table; /* symbol table id */ 461 } prsyminfo_t; 462 463 extern int Pxlookup_by_name(struct ps_prochandle *, 464 Lmid_t, const char *, const char *, GElf_Sym *, prsyminfo_t *); 465 466 extern int Pxlookup_by_addr(struct ps_prochandle *, 467 uintptr_t, char *, size_t, GElf_Sym *, prsyminfo_t *); 468 extern int Pxlookup_by_addr_resolved(struct ps_prochandle *, 469 uintptr_t, char *, size_t, GElf_Sym *, prsyminfo_t *); 470 471 typedef int proc_map_f(void *, const prmap_t *, const char *); 472 473 extern int Pmapping_iter(struct ps_prochandle *, proc_map_f *, void *); 474 extern int Pmapping_iter_resolved(struct ps_prochandle *, proc_map_f *, void *); 475 extern int Pobject_iter(struct ps_prochandle *, proc_map_f *, void *); 476 extern int Pobject_iter_resolved(struct ps_prochandle *, proc_map_f *, void *); 477 478 extern const prmap_t *Paddr_to_map(struct ps_prochandle *, uintptr_t); 479 extern const prmap_t *Paddr_to_text_map(struct ps_prochandle *, uintptr_t); 480 extern const prmap_t *Pname_to_map(struct ps_prochandle *, const char *); 481 extern const prmap_t *Plmid_to_map(struct ps_prochandle *, 482 Lmid_t, const char *); 483 484 extern const rd_loadobj_t *Paddr_to_loadobj(struct ps_prochandle *, uintptr_t); 485 extern const rd_loadobj_t *Pname_to_loadobj(struct ps_prochandle *, 486 const char *); 487 extern const rd_loadobj_t *Plmid_to_loadobj(struct ps_prochandle *, 488 Lmid_t, const char *); 489 490 extern ctf_file_t *Paddr_to_ctf(struct ps_prochandle *, uintptr_t); 491 extern ctf_file_t *Pname_to_ctf(struct ps_prochandle *, const char *); 492 493 extern char *Pplatform(struct ps_prochandle *, char *, size_t); 494 extern int Puname(struct ps_prochandle *, struct utsname *); 495 extern char *Pzonename(struct ps_prochandle *, char *, size_t); 496 extern char *Pfindobj(struct ps_prochandle *, const char *, char *, size_t); 497 498 extern char *Pexecname(struct ps_prochandle *, char *, size_t); 499 extern char *Pobjname(struct ps_prochandle *, uintptr_t, char *, size_t); 500 extern char *Pobjname_resolved(struct ps_prochandle *, uintptr_t, char *, 501 size_t); 502 extern int Plmid(struct ps_prochandle *, uintptr_t, Lmid_t *); 503 504 typedef int proc_env_f(void *, struct ps_prochandle *, uintptr_t, const char *); 505 extern int Penv_iter(struct ps_prochandle *, proc_env_f *, void *); 506 extern char *Pgetenv(struct ps_prochandle *, const char *, char *, size_t); 507 extern long Pgetauxval(struct ps_prochandle *, int); 508 extern const auxv_t *Pgetauxvec(struct ps_prochandle *); 509 510 extern void Pset_procfs_path(const char *); 511 512 /* 513 * Symbol table iteration interface. The special lmid constants LM_ID_BASE, 514 * LM_ID_LDSO, and PR_LMID_EVERY may be used with Psymbol_iter_by_lmid. 515 */ 516 typedef int proc_sym_f(void *, const GElf_Sym *, const char *); 517 typedef int proc_xsym_f(void *, const GElf_Sym *, const char *, 518 const prsyminfo_t *); 519 520 extern int Psymbol_iter(struct ps_prochandle *, 521 const char *, int, int, proc_sym_f *, void *); 522 extern int Psymbol_iter_by_addr(struct ps_prochandle *, 523 const char *, int, int, proc_sym_f *, void *); 524 extern int Psymbol_iter_by_name(struct ps_prochandle *, 525 const char *, int, int, proc_sym_f *, void *); 526 527 extern int Psymbol_iter_by_lmid(struct ps_prochandle *, 528 Lmid_t, const char *, int, int, proc_sym_f *, void *); 529 530 extern int Pxsymbol_iter(struct ps_prochandle *, 531 Lmid_t, const char *, int, int, proc_xsym_f *, void *); 532 533 /* 534 * 'which' selects which symbol table and can be one of the following. 535 */ 536 #define PR_SYMTAB 1 537 #define PR_DYNSYM 2 538 /* 539 * 'type' selects the symbols of interest by binding and type. It is a bit- 540 * mask of one or more of the following flags, whose order MUST match the 541 * order of STB and STT constants in <sys/elf.h>. 542 */ 543 #define BIND_LOCAL 0x0001 544 #define BIND_GLOBAL 0x0002 545 #define BIND_WEAK 0x0004 546 #define BIND_ANY (BIND_LOCAL|BIND_GLOBAL|BIND_WEAK) 547 #define TYPE_NOTYPE 0x0100 548 #define TYPE_OBJECT 0x0200 549 #define TYPE_FUNC 0x0400 550 #define TYPE_SECTION 0x0800 551 #define TYPE_FILE 0x1000 552 #define TYPE_ANY (TYPE_NOTYPE|TYPE_OBJECT|TYPE_FUNC|TYPE_SECTION|TYPE_FILE) 553 554 /* 555 * This returns the rtld_db agent handle for the process. 556 * The handle will become invalid at the next successful exec() and 557 * must not be used beyond that point (see Preset_maps(), below). 558 */ 559 extern rd_agent_t *Prd_agent(struct ps_prochandle *); 560 561 /* 562 * This should be called when an RD_DLACTIVITY event with the 563 * RD_CONSISTENT state occurs via librtld_db's event mechanism. 564 * This makes libproc's address space mappings and symbol tables current. 565 * The variant Pupdate_syms() can be used to preload all symbol tables as well. 566 */ 567 extern void Pupdate_maps(struct ps_prochandle *); 568 extern void Pupdate_syms(struct ps_prochandle *); 569 570 /* 571 * This must be called after the victim process performs a successful 572 * exec() if any of the symbol table interface functions have been called 573 * prior to that point. This is essential because an exec() invalidates 574 * all previous symbol table and address space mapping information. 575 * It is always safe to call, but if it is called other than after an 576 * exec() by the victim process it just causes unnecessary overhead. 577 * 578 * The rtld_db agent handle obtained from a previous call to Prd_agent() is 579 * made invalid by Preset_maps() and Prd_agent() must be called again to get 580 * the new handle. 581 */ 582 extern void Preset_maps(struct ps_prochandle *); 583 584 /* 585 * Given an address, Ppltdest() determines if this is part of a PLT, and if 586 * so returns a pointer to the symbol name that will be used for resolution. 587 * If the specified address is not part of a PLT, the function returns NULL. 588 */ 589 extern const char *Ppltdest(struct ps_prochandle *, uintptr_t); 590 591 /* 592 * See comments for Pissyscall(), in Pisadep.h 593 */ 594 extern int Pissyscall_prev(struct ps_prochandle *, uintptr_t, uintptr_t *); 595 596 /* 597 * Stack frame iteration interface. 598 */ 599 typedef int proc_stack_f(void *, prgregset_t, uint_t, const long *); 600 601 extern int Pstack_iter(struct ps_prochandle *, 602 const prgregset_t, proc_stack_f *, void *); 603 604 /* 605 * The following functions define a set of passive interfaces: libproc provides 606 * default, empty definitions that are called internally. If a client wishes 607 * to override these definitions, it can simply provide its own version with 608 * the same signature that interposes on the libproc definition. 609 * 610 * If the client program wishes to report additional error information, it 611 * can provide its own version of Perror_printf. 612 * 613 * If the client program wishes to receive a callback after Pcreate forks 614 * but before it execs, it can provide its own version of Pcreate_callback. 615 */ 616 extern void Perror_printf(struct ps_prochandle *P, const char *format, ...); 617 extern void Pcreate_callback(struct ps_prochandle *); 618 619 /* 620 * Remove unprintable characters from psinfo.pr_psargs and replace with 621 * whitespace characters so it is safe for printing. 622 */ 623 extern void proc_unctrl_psinfo(psinfo_t *); 624 625 /* 626 * Utility functions for processing arguments which should be /proc files, 627 * pids, and/or core files. The returned error code can be passed to 628 * Pgrab_error() in order to convert it to an error string. 629 */ 630 #define PR_ARG_PIDS 0x1 /* Allow pid and /proc file arguments */ 631 #define PR_ARG_CORES 0x2 /* Allow core file arguments */ 632 633 #define PR_ARG_ANY (PR_ARG_PIDS | PR_ARG_CORES) 634 635 extern struct ps_prochandle *proc_arg_grab(const char *, int, int, int *); 636 extern struct ps_prochandle *proc_arg_xgrab(const char *, const char *, int, 637 int, int *, const char **); 638 extern pid_t proc_arg_psinfo(const char *, int, psinfo_t *, int *); 639 extern pid_t proc_arg_xpsinfo(const char *, int, psinfo_t *, int *, 640 const char **); 641 642 /* 643 * Utility functions for obtaining information via /proc without actually 644 * performing a Pcreate() or Pgrab(): 645 */ 646 extern int proc_get_auxv(pid_t, auxv_t *, int); 647 extern int proc_get_cred(pid_t, prcred_t *, int); 648 extern prpriv_t *proc_get_priv(pid_t); 649 extern int proc_get_psinfo(pid_t, psinfo_t *); 650 extern int proc_get_status(pid_t, pstatus_t *); 651 652 /* 653 * Utility functions for debugging tools to convert numeric fault, 654 * signal, and system call numbers to symbolic names: 655 */ 656 #define FLT2STR_MAX 32 /* max. string length of faults (like SIG2STR_MAX) */ 657 #define SYS2STR_MAX 32 /* max. string length of syscalls (like SIG2STR_MAX) */ 658 659 extern char *proc_fltname(int, char *, size_t); 660 extern char *proc_signame(int, char *, size_t); 661 extern char *proc_sysname(int, char *, size_t); 662 663 /* 664 * Utility functions for debugging tools to convert fault, signal, and system 665 * call names back to the numeric constants: 666 */ 667 extern int proc_str2flt(const char *, int *); 668 extern int proc_str2sig(const char *, int *); 669 extern int proc_str2sys(const char *, int *); 670 671 /* 672 * Utility functions for debugging tools to convert a fault, signal or system 673 * call set to a string representation (e.g. "BUS,SEGV" or "open,close,read"). 674 */ 675 #define PRSIGBUFSZ 1024 /* buffer size for proc_sigset2str() */ 676 677 extern char *proc_fltset2str(const fltset_t *, const char *, int, 678 char *, size_t); 679 extern char *proc_sigset2str(const sigset_t *, const char *, int, 680 char *, size_t); 681 extern char *proc_sysset2str(const sysset_t *, const char *, int, 682 char *, size_t); 683 684 extern int Pgcore(struct ps_prochandle *, const char *, core_content_t); 685 extern int Pfgcore(struct ps_prochandle *, int, core_content_t); 686 extern core_content_t Pcontent(struct ps_prochandle *); 687 688 /* 689 * Utility functions for debugging tools to convert a string representation of 690 * a fault, signal or system call set back to the numeric value of the 691 * corresponding set type. 692 */ 693 extern char *proc_str2fltset(const char *, const char *, int, fltset_t *); 694 extern char *proc_str2sigset(const char *, const char *, int, sigset_t *); 695 extern char *proc_str2sysset(const char *, const char *, int, sysset_t *); 696 697 /* 698 * Utility functions for converting between strings and core_content_t. 699 */ 700 #define PRCONTENTBUFSZ 80 /* buffer size for proc_content2str() */ 701 702 extern int proc_str2content(const char *, core_content_t *); 703 extern int proc_content2str(core_content_t, char *, size_t); 704 705 /* 706 * Utility functions for buffering output to stdout, stderr while 707 * process is grabbed. Prevents deadlocks due to pfiles `pgrep xterm` 708 * and other varients. 709 */ 710 extern int proc_initstdio(void); 711 extern int proc_flushstdio(void); 712 extern int proc_finistdio(void); 713 714 #ifdef __cplusplus 715 } 716 #endif 717 718 #endif /* _LIBPROC_H */ 719
Indexes created Mon Nov 23 10:17:13 UTC 2009
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