8158 Want named threads API

[unleashed.git] / usr / src / lib / libproc / common / libproc.h

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 *
 * Portions Copyright 2007 Chad Mynhier
 * Copyright 2012 DEY Storage Systems, Inc.  All rights reserved.
 * Copyright 2018, Joyent, Inc.
 * Copyright (c) 2013 by Delphix. All rights reserved.
 */

/*
 * Interfaces available from the process control library, libproc.
 */

#ifndef _LIBPROC_H
#define _LIBPROC_H

#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <nlist.h>
#include <door.h>
#include <gelf.h>
#include <proc_service.h>
#include <rtld_db.h>
#include <procfs.h>
#include <ucred.h>
#include <rctl.h>
#include <libctf.h>
#include <sys/stat.h>
#include <sys/statvfs.h>
#include <sys/auxv.h>
#include <sys/resource.h>
#include <sys/socket.h>
#include <sys/utsname.h>
#include <sys/corectl.h>
#include <sys/secflags.h>
#if defined(__i386) || defined(__amd64)
#include <sys/sysi86.h>
#endif

#ifdef  __cplusplus
extern "C" {
#endif

/*
 * Opaque structure tag reference to a process control structure.
 * Clients of libproc cannot look inside the process control structure.
 * The implementation of struct ps_prochandle can change w/o affecting clients.
 */
struct ps_prochandle;

/*
 * Opaque structure tag reference to an lwp control structure.
 */
struct ps_lwphandle;

extern  int     _libproc_debug; /* set non-zero to enable debugging fprintfs */
extern  int     _libproc_no_qsort;      /* set non-zero to inhibit sorting */
                                        /* of symbol tables */
extern  int     _libproc_incore_elf;    /* only use in-core elf data */

#if defined(__sparc)
#define R_RVAL1 R_O0            /* register holding a function return value */
#define R_RVAL2 R_O1            /* 32 more bits for a 64-bit return value */
#endif  /* __sparc */

#if defined(__amd64)
#define R_PC    REG_RIP
#define R_SP    REG_RSP
#define R_RVAL1 REG_RAX         /* register holding a function return value */
#define R_RVAL2 REG_RDX         /* 32 more bits for a 64-bit return value */
#elif defined(__i386)
#define R_PC    EIP
#define R_SP    UESP
#define R_RVAL1 EAX             /* register holding a function return value */
#define R_RVAL2 EDX             /* 32 more bits for a 64-bit return value */
#endif  /* __amd64 || __i386 */

#define R_RVAL  R_RVAL1         /* simple function return value register */

/* maximum sizes of things */
#define PRMAXSIG        (32 * sizeof (sigset_t) / sizeof (uint32_t))
#define PRMAXFAULT      (32 * sizeof (fltset_t) / sizeof (uint32_t))
#define PRMAXSYS        (32 * sizeof (sysset_t) / sizeof (uint32_t))

/* State values returned by Pstate() */
#define PS_RUN          1       /* process is running */
#define PS_STOP         2       /* process is stopped */
#define PS_LOST         3       /* process is lost to control (EAGAIN) */
#define PS_UNDEAD       4       /* process is terminated (zombie) */
#define PS_DEAD         5       /* process is terminated (core file) */
#define PS_IDLE         6       /* process has not been run */

/* Flags accepted by Pgrab() */
#define PGRAB_RETAIN    0x01    /* Retain tracing flags, else clear flags */
#define PGRAB_FORCE     0x02    /* Open the process w/o O_EXCL */
#define PGRAB_RDONLY    0x04    /* Open the process or core w/ O_RDONLY */
#define PGRAB_NOSTOP    0x08    /* Open the process but do not stop it */
#define PGRAB_INCORE    0x10    /* Use in-core data to build symbol tables */

/* Error codes from Pcreate() */
#define C_STRANGE       -1      /* Unanticipated error, errno is meaningful */
#define C_FORK          1       /* Unable to fork */
#define C_PERM          2       /* No permission (file set-id or unreadable) */
#define C_NOEXEC        3       /* Cannot execute file */
#define C_INTR          4       /* Interrupt received while creating */
#define C_LP64          5       /* Program is _LP64, self is _ILP32 */
#define C_NOENT         6       /* Cannot find executable file */

/* Error codes from Pgrab(), Pfgrab_core(), and Pgrab_core() */
#define G_STRANGE       -1      /* Unanticipated error, errno is meaningful */
#define G_NOPROC        1       /* No such process */
#define G_NOCORE        2       /* No such core file */
#define G_NOPROCORCORE  3       /* No such proc or core (for proc_arg_grab) */
#define G_NOEXEC        4       /* Cannot locate executable file */
#define G_ZOMB          5       /* Zombie process */
#define G_PERM          6       /* No permission */
#define G_BUSY          7       /* Another process has control */
#define G_SYS           8       /* System process */
#define G_SELF          9       /* Process is self */
#define G_INTR          10      /* Interrupt received while grabbing */
#define G_LP64          11      /* Process is _LP64, self is ILP32 */
#define G_FORMAT        12      /* File is not an ELF format core file */
#define G_ELF           13      /* Libelf error, elf_errno() is meaningful */
#define G_NOTE          14      /* Required PT_NOTE Phdr not present in core */
#define G_ISAINVAL      15      /* Wrong ELF machine type */
#define G_BADLWPS       16      /* Bad '/lwps' specification */
#define G_NOFD          17      /* No more file descriptors */


/* Flags accepted by Prelease */
#define PRELEASE_CLEAR  0x10    /* Clear all tracing flags */
#define PRELEASE_RETAIN 0x20    /* Retain final tracing flags */
#define PRELEASE_HANG   0x40    /* Leave the process stopped */
#define PRELEASE_KILL   0x80    /* Terminate the process */

typedef struct {        /* argument descriptor for system call (Psyscall) */
        long    arg_value;      /* value of argument given to system call */
        void    *arg_object;    /* pointer to object in controlling process */
        char    arg_type;       /* AT_BYVAL, AT_BYREF */
        char    arg_inout;      /* AI_INPUT, AI_OUTPUT, AI_INOUT */
        ushort_t arg_size;      /* if AT_BYREF, size of object in bytes */
} argdes_t;

/* values for type */
#define AT_BYVAL        1
#define AT_BYREF        2

/* values for inout */
#define AI_INPUT        1
#define AI_OUTPUT       2
#define AI_INOUT        3

/* maximum number of syscall arguments */
#define MAXARGS         8

/* maximum size in bytes of a BYREF argument */
#define MAXARGL         (4*1024)

/*
 * Ops vector definition for the Pgrab_ops().
 */
typedef ssize_t (*pop_pread_t)(struct ps_prochandle *, void *, size_t,
    uintptr_t, void *);
typedef ssize_t (*pop_pwrite_t)(struct ps_prochandle *, const void *, size_t,
    uintptr_t, void *);
typedef int (*pop_read_maps_t)(struct ps_prochandle *, prmap_t **, ssize_t *,
    void *);
typedef void (*pop_read_aux_t)(struct ps_prochandle *, auxv_t **, int *,
    void *);
typedef int (*pop_cred_t)(struct ps_prochandle *, prcred_t *, int,
    void *);
typedef int (*pop_priv_t)(struct ps_prochandle *, prpriv_t **, void *);
typedef int (*pop_secflags_t)(struct ps_prochandle *, prsecflags_t **, void *);
typedef const psinfo_t *(*pop_psinfo_t)(struct ps_prochandle *, psinfo_t *,
    void *);
typedef void (*pop_status_t)(struct ps_prochandle *, pstatus_t *, void *);
typedef prheader_t *(*pop_lstatus_t)(struct ps_prochandle *, void *);
typedef prheader_t *(*pop_lpsinfo_t)(struct ps_prochandle *, void *);
typedef void (*pop_fini_t)(struct ps_prochandle *, void *);
typedef char *(*pop_platform_t)(struct ps_prochandle *, char *, size_t, void *);
typedef int (*pop_uname_t)(struct ps_prochandle *, struct utsname *, void *);
typedef char *(*pop_zonename_t)(struct ps_prochandle *, char *, size_t, void *);
typedef char *(*pop_execname_t)(struct ps_prochandle *, char *, size_t, void *);
#if defined(__i386) || defined(__amd64)
typedef int (*pop_ldt_t)(struct ps_prochandle *, struct ssd *, int, void *);
#endif

typedef struct ps_ops {
        pop_pread_t             pop_pread;
        pop_pwrite_t            pop_pwrite;
        pop_read_maps_t         pop_read_maps;
        pop_read_aux_t          pop_read_aux;
        pop_cred_t              pop_cred;
        pop_priv_t              pop_priv;
        pop_psinfo_t            pop_psinfo;
        pop_status_t            pop_status;
        pop_lstatus_t           pop_lstatus;
        pop_lpsinfo_t           pop_lpsinfo;
        pop_fini_t              pop_fini;
        pop_platform_t          pop_platform;
        pop_uname_t             pop_uname;
        pop_zonename_t          pop_zonename;
        pop_execname_t          pop_execname;
        pop_secflags_t          pop_secflags;
#if defined(__i386) || defined(__amd64)
        pop_ldt_t               pop_ldt;
#endif
} ps_ops_t;

/*
 * Function prototypes for routines in the process control package.
 */
extern struct ps_prochandle *Pcreate(const char *, char *const *,
    int *, char *, size_t);
extern struct ps_prochandle *Pxcreate(const char *, char *const *,
    char *const *, int *, char *, size_t);

extern const char *Pcreate_error(int);

extern struct ps_prochandle *Pgrab(pid_t, int, int *);
extern struct ps_prochandle *Pgrab_core(const char *, const char *, int, int *);
extern struct ps_prochandle *Pfgrab_core(int, const char *, int *);
extern struct ps_prochandle *Pgrab_file(const char *, int *);
extern struct ps_prochandle *Pgrab_ops(pid_t, void *, const ps_ops_t *, int);
extern const char *Pgrab_error(int);

extern  int     Preopen(struct ps_prochandle *);
extern  void    Prelease(struct ps_prochandle *, int);
extern  void    Pfree(struct ps_prochandle *);

extern  int     Pasfd(struct ps_prochandle *);
extern  char   *Pbrandname(struct ps_prochandle *, char *, size_t);
extern  int     Pctlfd(struct ps_prochandle *);
extern  int     Pcreate_agent(struct ps_prochandle *);
extern  void    Pdestroy_agent(struct ps_prochandle *);
extern  int     Pstopstatus(struct ps_prochandle *, long, uint_t);
extern  int     Pwait(struct ps_prochandle *, uint_t);
extern  int     Pstop(struct ps_prochandle *, uint_t);
extern  int     Pdstop(struct ps_prochandle *);
extern  int     Pstate(struct ps_prochandle *);
extern  const psinfo_t *Ppsinfo(struct ps_prochandle *);
extern  const pstatus_t *Pstatus(struct ps_prochandle *);
extern  int     Pcred(struct ps_prochandle *, prcred_t *, int);
extern  int     Psetcred(struct ps_prochandle *, const prcred_t *);
extern  int     Ppriv(struct ps_prochandle *, prpriv_t **);
extern  void    Ppriv_free(struct ps_prochandle *, prpriv_t *);
extern  int     Psetpriv(struct ps_prochandle *, prpriv_t *);
extern  void   *Pprivinfo(struct ps_prochandle *);
extern  int     Psetzoneid(struct ps_prochandle *, zoneid_t);
extern  int     Pgetareg(struct ps_prochandle *, int, prgreg_t *);
extern  int     Pputareg(struct ps_prochandle *, int, prgreg_t);
extern  int     Psetrun(struct ps_prochandle *, int, int);
extern  int     Psecflags(struct ps_prochandle *, prsecflags_t **);
extern  void    Psecflags_free(prsecflags_t *);
extern  ssize_t Pread(struct ps_prochandle *, void *, size_t, uintptr_t);
extern  ssize_t Pread_string(struct ps_prochandle *, char *, size_t, uintptr_t);
extern  ssize_t Pwrite(struct ps_prochandle *, const void *, size_t, uintptr_t);
extern  int     Pclearsig(struct ps_prochandle *);
extern  int     Pclearfault(struct ps_prochandle *);
extern  int     Psetbkpt(struct ps_prochandle *, uintptr_t, ulong_t *);
extern  int     Pdelbkpt(struct ps_prochandle *, uintptr_t, ulong_t);
extern  int     Pxecbkpt(struct ps_prochandle *, ulong_t);
extern  int     Psetwapt(struct ps_prochandle *, const prwatch_t *);
extern  int     Pdelwapt(struct ps_prochandle *, const prwatch_t *);
extern  int     Pxecwapt(struct ps_prochandle *, const prwatch_t *);
extern  int     Psetflags(struct ps_prochandle *, long);
extern  int     Punsetflags(struct ps_prochandle *, long);
extern  int     Psignal(struct ps_prochandle *, int, int);
extern  int     Pfault(struct ps_prochandle *, int, int);
extern  int     Psysentry(struct ps_prochandle *, int, int);
extern  int     Psysexit(struct ps_prochandle *, int, int);
extern  void    Psetsignal(struct ps_prochandle *, const sigset_t *);
extern  void    Psetfault(struct ps_prochandle *, const fltset_t *);
extern  void    Psetsysentry(struct ps_prochandle *, const sysset_t *);
extern  void    Psetsysexit(struct ps_prochandle *, const sysset_t *);

extern  void    Psync(struct ps_prochandle *);
extern  int     Psyscall(struct ps_prochandle *, sysret_t *,
                        int, uint_t, argdes_t *);
extern  int     Pisprocdir(struct ps_prochandle *, const char *);

/*
 * Function prototypes for lwp-specific operations.
 */
extern  struct ps_lwphandle *Lgrab(struct ps_prochandle *, lwpid_t, int *);
extern  const char *Lgrab_error(int);

extern  struct ps_prochandle *Lprochandle(struct ps_lwphandle *);
extern  void    Lfree(struct ps_lwphandle *);

extern  int     Lctlfd(struct ps_lwphandle *);
extern  int     Lwait(struct ps_lwphandle *, uint_t);
extern  int     Lstop(struct ps_lwphandle *, uint_t);
extern  int     Ldstop(struct ps_lwphandle *);
extern  int     Lstate(struct ps_lwphandle *);
extern  const lwpsinfo_t *Lpsinfo(struct ps_lwphandle *);
extern  const lwpstatus_t *Lstatus(struct ps_lwphandle *);
extern  int     Lgetareg(struct ps_lwphandle *, int, prgreg_t *);
extern  int     Lputareg(struct ps_lwphandle *, int, prgreg_t);
extern  int     Lsetrun(struct ps_lwphandle *, int, int);
extern  int     Lclearsig(struct ps_lwphandle *);
extern  int     Lclearfault(struct ps_lwphandle *);
extern  int     Lxecbkpt(struct ps_lwphandle *, ulong_t);
extern  int     Lxecwapt(struct ps_lwphandle *, const prwatch_t *);
extern  void    Lsync(struct ps_lwphandle *);

extern  int     Lstack(struct ps_lwphandle *, stack_t *);
extern  int     Lmain_stack(struct ps_lwphandle *, stack_t *);
extern  int     Lalt_stack(struct ps_lwphandle *, stack_t *);

/*
 * Function prototypes for system calls forced on the victim process.
 */
extern  int     pr_open(struct ps_prochandle *, const char *, int, mode_t);
extern  int     pr_creat(struct ps_prochandle *, const char *, mode_t);
extern  int     pr_close(struct ps_prochandle *, int);
extern  int     pr_access(struct ps_prochandle *, const char *, int);
extern  int     pr_door_info(struct ps_prochandle *, int, struct door_info *);
extern  void    *pr_mmap(struct ps_prochandle *,
                        void *, size_t, int, int, int, off_t);
extern  void    *pr_zmap(struct ps_prochandle *,
                        void *, size_t, int, int);
extern  int     pr_munmap(struct ps_prochandle *, void *, size_t);
extern  int     pr_memcntl(struct ps_prochandle *,
                        caddr_t, size_t, int, caddr_t, int, int);
extern  int     pr_meminfo(struct ps_prochandle *, const uint64_t *addrs,
                        int addr_count, const uint_t *info, int info_count,
                        uint64_t *outdata, uint_t *validity);
extern  int     pr_sigaction(struct ps_prochandle *,
                        int, const struct sigaction *, struct sigaction *);
extern  int     pr_getitimer(struct ps_prochandle *,
                        int, struct itimerval *);
extern  int     pr_setitimer(struct ps_prochandle *,
                        int, const struct itimerval *, struct itimerval *);
extern  int     pr_ioctl(struct ps_prochandle *, int, int, void *, size_t);
extern  int     pr_fcntl(struct ps_prochandle *, int, int, void *);
extern  int     pr_stat(struct ps_prochandle *, const char *, struct stat *);
extern  int     pr_lstat(struct ps_prochandle *, const char *, struct stat *);
extern  int     pr_fstat(struct ps_prochandle *, int, struct stat *);
extern  int     pr_stat64(struct ps_prochandle *, const char *,
                        struct stat64 *);
extern  int     pr_lstat64(struct ps_prochandle *, const char *,
                        struct stat64 *);
extern  int     pr_fstat64(struct ps_prochandle *, int, struct stat64 *);
extern  int     pr_statvfs(struct ps_prochandle *, const char *, statvfs_t *);
extern  int     pr_fstatvfs(struct ps_prochandle *, int, statvfs_t *);
extern  projid_t pr_getprojid(struct ps_prochandle *Pr);
extern  taskid_t pr_gettaskid(struct ps_prochandle *Pr);
extern  taskid_t pr_settaskid(struct ps_prochandle *Pr, projid_t project,
                        int flags);
extern  zoneid_t pr_getzoneid(struct ps_prochandle *Pr);
extern  int     pr_getrctl(struct ps_prochandle *,
                        const char *, rctlblk_t *, rctlblk_t *, int);
extern  int     pr_setrctl(struct ps_prochandle *,
                        const char *, rctlblk_t *, rctlblk_t *, int);
extern  int     pr_getrlimit(struct ps_prochandle *,
                        int, struct rlimit *);
extern  int     pr_setrlimit(struct ps_prochandle *,
                        int, const struct rlimit *);
extern  int     pr_setprojrctl(struct ps_prochandle *, const char *,
                        rctlblk_t *, size_t, int);
#if defined(_LARGEFILE64_SOURCE)
extern  int     pr_getrlimit64(struct ps_prochandle *,
                        int, struct rlimit64 *);
extern  int     pr_setrlimit64(struct ps_prochandle *,
                        int, const struct rlimit64 *);
#endif  /* _LARGEFILE64_SOURCE */
extern  int     pr_lwp_exit(struct ps_prochandle *);
extern  int     pr_exit(struct ps_prochandle *, int);
extern  int     pr_waitid(struct ps_prochandle *,
                        idtype_t, id_t, siginfo_t *, int);
extern  off_t   pr_lseek(struct ps_prochandle *, int, off_t, int);
extern  offset_t pr_llseek(struct ps_prochandle *, int, offset_t, int);
extern  int     pr_rename(struct ps_prochandle *, const char *, const char *);
extern  int     pr_link(struct ps_prochandle *, const char *, const char *);
extern  int     pr_unlink(struct ps_prochandle *, const char *);
extern  int     pr_getpeerucred(struct ps_prochandle *, int, ucred_t **);
extern  int     pr_getpeername(struct ps_prochandle *,
                        int, struct sockaddr *, socklen_t *);
extern  int     pr_getsockname(struct ps_prochandle *,
                        int, struct sockaddr *, socklen_t *);
extern  int     pr_getsockopt(struct ps_prochandle *,
                        int, int, int, void *, int *);
extern  int     pr_processor_bind(struct ps_prochandle *,
                        idtype_t, id_t, int, int *);

/*
 * Function prototypes for accessing per-LWP register information.
 */
extern int Plwp_getregs(struct ps_prochandle *, lwpid_t, prgregset_t);
extern int Plwp_setregs(struct ps_prochandle *, lwpid_t, const prgregset_t);

extern int Plwp_getfpregs(struct ps_prochandle *, lwpid_t, prfpregset_t *);
extern int Plwp_setfpregs(struct ps_prochandle *, lwpid_t,
    const prfpregset_t *);

#if defined(__sparc)

extern int Plwp_getxregs(struct ps_prochandle *, lwpid_t, prxregset_t *);
extern int Plwp_setxregs(struct ps_prochandle *, lwpid_t, const prxregset_t *);

extern int Plwp_getgwindows(struct ps_prochandle *, lwpid_t, gwindows_t *);

#if defined(__sparcv9)
extern int Plwp_getasrs(struct ps_prochandle *, lwpid_t, asrset_t);
extern int Plwp_setasrs(struct ps_prochandle *, lwpid_t, const asrset_t);
#endif  /* __sparcv9 */

#endif  /* __sparc */

#if defined(__i386) || defined(__amd64)
extern  int     Pldt(struct ps_prochandle *, struct ssd *, int);
extern  int     proc_get_ldt(pid_t, struct ssd *, int);
#endif  /* __i386 || __amd64 */

extern int Plwp_getname(struct ps_prochandle *, lwpid_t, char *, size_t);
extern int Plwp_getpsinfo(struct ps_prochandle *, lwpid_t, lwpsinfo_t *);
extern int Plwp_getspymaster(struct ps_prochandle *, lwpid_t, psinfo_t *);

extern int Plwp_stack(struct ps_prochandle *, lwpid_t, stack_t *);
extern int Plwp_main_stack(struct ps_prochandle *, lwpid_t, stack_t *);
extern int Plwp_alt_stack(struct ps_prochandle *, lwpid_t, stack_t *);

/*
 * LWP iteration interface; iterate over all active LWPs.
 */
typedef int proc_lwp_f(void *, const lwpstatus_t *);
extern int Plwp_iter(struct ps_prochandle *, proc_lwp_f *, void *);

/*
 * LWP iteration interface; iterate over all LWPs, active and zombie.
 */
typedef int proc_lwp_all_f(void *, const lwpstatus_t *, const lwpsinfo_t *);
extern int Plwp_iter_all(struct ps_prochandle *, proc_lwp_all_f *, void *);

/*
 * Process iteration interface; iterate over all non-system processes.
 */
typedef int proc_walk_f(psinfo_t *, lwpsinfo_t *, void *);
extern int proc_walk(proc_walk_f *, void *, int);

#define PR_WALK_PROC    0               /* walk processes only */
#define PR_WALK_LWP     1               /* walk all lwps */

/*
 * Determine if an lwp is in a set as returned from proc_arg_xgrab().
 */
extern int proc_lwp_in_set(const char *, lwpid_t);
extern int proc_lwp_range_valid(const char *);

/*
 * Symbol table interfaces.
 */

/*
 * Pseudo-names passed to Plookup_by_name() for well-known load objects.
 * NOTE: It is required that PR_OBJ_EXEC and PR_OBJ_LDSO exactly match
 * the definitions of PS_OBJ_EXEC and PS_OBJ_LDSO from <proc_service.h>.
 */
#define PR_OBJ_EXEC     ((const char *)0)       /* search the executable file */
#define PR_OBJ_LDSO     ((const char *)1)       /* search ld.so.1 */
#define PR_OBJ_EVERY    ((const char *)-1)      /* search every load object */

/*
 * Special Lmid_t passed to Plookup_by_lmid() to search all link maps.  The
 * special values LM_ID_BASE and LM_ID_LDSO from <link.h> may also be used.
 * If PR_OBJ_EXEC is used as the object name, the lmid must be PR_LMID_EVERY
 * or LM_ID_BASE in order to return a match.  If PR_OBJ_LDSO is used as the
 * object name, the lmid must be PR_LMID_EVERY or LM_ID_LDSO to return a match.
 */
#define PR_LMID_EVERY   ((Lmid_t)-1UL)          /* search every link map */

/*
 * 'object_name' is the name of a load object obtained from an
 * iteration over the process's address space mappings (Pmapping_iter),
 * or an iteration over the process's mapped objects (Pobject_iter),
 * or else it is one of the special PR_OBJ_* values above.
 */
extern int Plookup_by_name(struct ps_prochandle *,
    const char *, const char *, GElf_Sym *);

extern int Plookup_by_addr(struct ps_prochandle *,
    uintptr_t, char *, size_t, GElf_Sym *);

typedef struct prsyminfo {
        const char      *prs_object;            /* object name */
        const char      *prs_name;              /* symbol name */
        Lmid_t          prs_lmid;               /* link map id */
        uint_t          prs_id;                 /* symbol id */
        uint_t          prs_table;              /* symbol table id */
} prsyminfo_t;

extern int Pxlookup_by_name(struct ps_prochandle *,
    Lmid_t, const char *, const char *, GElf_Sym *, prsyminfo_t *);

extern int Pxlookup_by_addr(struct ps_prochandle *,
    uintptr_t, char *, size_t, GElf_Sym *, prsyminfo_t *);
extern int Pxlookup_by_addr_resolved(struct ps_prochandle *,
    uintptr_t, char *, size_t, GElf_Sym *, prsyminfo_t *);

typedef int proc_map_f(void *, const prmap_t *, const char *);

extern int Pmapping_iter(struct ps_prochandle *, proc_map_f *, void *);
extern int Pmapping_iter_resolved(struct ps_prochandle *, proc_map_f *, void *);
extern int Pobject_iter(struct ps_prochandle *, proc_map_f *, void *);
extern int Pobject_iter_resolved(struct ps_prochandle *, proc_map_f *, void *);

extern const prmap_t *Paddr_to_map(struct ps_prochandle *, uintptr_t);
extern const prmap_t *Paddr_to_text_map(struct ps_prochandle *, uintptr_t);
extern const prmap_t *Pname_to_map(struct ps_prochandle *, const char *);
extern const prmap_t *Plmid_to_map(struct ps_prochandle *,
    Lmid_t, const char *);

extern const rd_loadobj_t *Paddr_to_loadobj(struct ps_prochandle *, uintptr_t);
extern const rd_loadobj_t *Pname_to_loadobj(struct ps_prochandle *,
    const char *);
extern const rd_loadobj_t *Plmid_to_loadobj(struct ps_prochandle *,
    Lmid_t, const char *);

extern ctf_file_t *Paddr_to_ctf(struct ps_prochandle *, uintptr_t);
extern ctf_file_t *Pname_to_ctf(struct ps_prochandle *, const char *);

extern char *Pplatform(struct ps_prochandle *, char *, size_t);
extern int Puname(struct ps_prochandle *, struct utsname *);
extern char *Pzonename(struct ps_prochandle *, char *, size_t);
extern char *Pfindobj(struct ps_prochandle *, const char *, char *, size_t);

extern char *Pexecname(struct ps_prochandle *, char *, size_t);
extern char *Pobjname(struct ps_prochandle *, uintptr_t, char *, size_t);
extern char *Pobjname_resolved(struct ps_prochandle *, uintptr_t, char *,
    size_t);
extern int Plmid(struct ps_prochandle *, uintptr_t, Lmid_t *);

typedef int proc_env_f(void *, struct ps_prochandle *, uintptr_t, const char *);
extern  int Penv_iter(struct ps_prochandle *, proc_env_f *, void *);
extern char *Pgetenv(struct ps_prochandle *, const char *, char *, size_t);
extern long Pgetauxval(struct ps_prochandle *, int);
extern const auxv_t *Pgetauxvec(struct ps_prochandle *);

extern void Pset_procfs_path(const char *);

/*
 * Symbol table iteration interface.  The special lmid constants LM_ID_BASE,
 * LM_ID_LDSO, and PR_LMID_EVERY may be used with Psymbol_iter_by_lmid.
 */
typedef int proc_sym_f(void *, const GElf_Sym *, const char *);
typedef int proc_xsym_f(void *, const GElf_Sym *, const char *,
    const prsyminfo_t *);

extern int Psymbol_iter(struct ps_prochandle *,
    const char *, int, int, proc_sym_f *, void *);
extern int Psymbol_iter_by_addr(struct ps_prochandle *,
    const char *, int, int, proc_sym_f *, void *);
extern int Psymbol_iter_by_name(struct ps_prochandle *,
    const char *, int, int, proc_sym_f *, void *);

extern int Psymbol_iter_by_lmid(struct ps_prochandle *,
    Lmid_t, const char *, int, int, proc_sym_f *, void *);

extern int Pxsymbol_iter(struct ps_prochandle *,
    Lmid_t, const char *, int, int, proc_xsym_f *, void *);

/*
 * 'which' selects which symbol table and can be one of the following.
 */
#define PR_SYMTAB       1
#define PR_DYNSYM       2
/*
 * 'type' selects the symbols of interest by binding and type.  It is a bit-
 * mask of one or more of the following flags, whose order MUST match the
 * order of STB and STT constants in <sys/elf.h>.
 */
#define BIND_LOCAL      0x0001
#define BIND_GLOBAL     0x0002
#define BIND_WEAK       0x0004
#define BIND_ANY (BIND_LOCAL|BIND_GLOBAL|BIND_WEAK)
#define TYPE_NOTYPE     0x0100
#define TYPE_OBJECT     0x0200
#define TYPE_FUNC       0x0400
#define TYPE_SECTION    0x0800
#define TYPE_FILE       0x1000
#define TYPE_ANY (TYPE_NOTYPE|TYPE_OBJECT|TYPE_FUNC|TYPE_SECTION|TYPE_FILE)

/*
 * This returns the rtld_db agent handle for the process.
 * The handle will become invalid at the next successful exec() and
 * must not be used beyond that point (see Preset_maps(), below).
 */
extern rd_agent_t *Prd_agent(struct ps_prochandle *);

/*
 * This should be called when an RD_DLACTIVITY event with the
 * RD_CONSISTENT state occurs via librtld_db's event mechanism.
 * This makes libproc's address space mappings and symbol tables current.
 * The variant Pupdate_syms() can be used to preload all symbol tables as well.
 */
extern void Pupdate_maps(struct ps_prochandle *);
extern void Pupdate_syms(struct ps_prochandle *);

/*
 * This must be called after the victim process performs a successful
 * exec() if any of the symbol table interface functions have been called
 * prior to that point.  This is essential because an exec() invalidates
 * all previous symbol table and address space mapping information.
 * It is always safe to call, but if it is called other than after an
 * exec() by the victim process it just causes unnecessary overhead.
 *
 * The rtld_db agent handle obtained from a previous call to Prd_agent() is
 * made invalid by Preset_maps() and Prd_agent() must be called again to get
 * the new handle.
 */
extern void Preset_maps(struct ps_prochandle *);

/*
 * Given an address, Ppltdest() determines if this is part of a PLT, and if
 * so returns a pointer to the symbol name that will be used for resolution.
 * If the specified address is not part of a PLT, the function returns NULL.
 */
extern const char *Ppltdest(struct ps_prochandle *, uintptr_t);

/*
 * See comments for Pissyscall(), in Pisadep.h
 */
extern int Pissyscall_prev(struct ps_prochandle *, uintptr_t, uintptr_t *);

/*
 * Stack frame iteration interface.
 */
typedef int proc_stack_f(void *, prgregset_t, uint_t, const long *);

extern int Pstack_iter(struct ps_prochandle *,
    const prgregset_t, proc_stack_f *, void *);

/*
 * The following functions define a set of passive interfaces: libproc provides
 * default, empty definitions that are called internally.  If a client wishes
 * to override these definitions, it can simply provide its own version with
 * the same signature that interposes on the libproc definition.
 *
 * If the client program wishes to report additional error information, it
 * can provide its own version of Perror_printf.
 *
 * If the client program wishes to receive a callback after Pcreate forks
 * but before it execs, it can provide its own version of Pcreate_callback.
 */
extern void Perror_printf(struct ps_prochandle *P, const char *format, ...);
extern void Pcreate_callback(struct ps_prochandle *);

/*
 * Remove unprintable characters from psinfo.pr_psargs and replace with
 * whitespace characters so it is safe for printing.
 */
extern void proc_unctrl_psinfo(psinfo_t *);

/*
 * Utility functions for processing arguments which should be /proc files,
 * pids, and/or core files.  The returned error code can be passed to
 * Pgrab_error() in order to convert it to an error string.
 */
#define PR_ARG_PIDS     0x1     /* Allow pid and /proc file arguments */
#define PR_ARG_CORES    0x2     /* Allow core file arguments */

#define PR_ARG_ANY      (PR_ARG_PIDS | PR_ARG_CORES)

extern struct ps_prochandle *proc_arg_grab(const char *, int, int, int *);
extern struct ps_prochandle *proc_arg_xgrab(const char *, const char *, int,
    int, int *, const char **);
extern pid_t proc_arg_psinfo(const char *, int, psinfo_t *, int *);
extern pid_t proc_arg_xpsinfo(const char *, int, psinfo_t *, int *,
    const char **);

/*
 * Utility functions for obtaining information via /proc without actually
 * performing a Pcreate() or Pgrab():
 */
extern int proc_get_auxv(pid_t, auxv_t *, int);
extern int proc_get_cred(pid_t, prcred_t *, int);
extern prpriv_t *proc_get_priv(pid_t);
extern void proc_free_priv(prpriv_t *);
extern int proc_get_psinfo(pid_t, psinfo_t *);
extern int proc_get_status(pid_t, pstatus_t *);
extern int proc_get_secflags(pid_t, prsecflags_t **);

/*
 * Utility functions for debugging tools to convert numeric fault,
 * signal, and system call numbers to symbolic names:
 */
#define FLT2STR_MAX 32  /* max. string length of faults (like SIG2STR_MAX) */
#define SYS2STR_MAX 32  /* max. string length of syscalls (like SIG2STR_MAX) */

extern char *proc_fltname(int, char *, size_t);
extern char *proc_signame(int, char *, size_t);
extern char *proc_sysname(int, char *, size_t);

/*
 * Utility functions for debugging tools to convert fault, signal, and system
 * call names back to the numeric constants:
 */
extern int proc_str2flt(const char *, int *);
extern int proc_str2sig(const char *, int *);
extern int proc_str2sys(const char *, int *);

/*
 * Utility functions for debugging tools to convert a fault, signal or system
 * call set to a string representation (e.g. "BUS,SEGV" or "open,close,read").
 */
#define PRSIGBUFSZ      1024    /* buffer size for proc_sigset2str() */

extern char *proc_fltset2str(const fltset_t *, const char *, int,
    char *, size_t);
extern char *proc_sigset2str(const sigset_t *, const char *, int,
    char *, size_t);
extern char *proc_sysset2str(const sysset_t *, const char *, int,
    char *, size_t);

extern int Pgcore(struct ps_prochandle *, const char *, core_content_t);
extern int Pfgcore(struct ps_prochandle *, int, core_content_t);
extern core_content_t Pcontent(struct ps_prochandle *);

/*
 * Utility functions for debugging tools to convert a string representation of
 * a fault, signal or system call set back to the numeric value of the
 * corresponding set type.
 */
extern char *proc_str2fltset(const char *, const char *, int, fltset_t *);
extern char *proc_str2sigset(const char *, const char *, int, sigset_t *);
extern char *proc_str2sysset(const char *, const char *, int, sysset_t *);

/*
 * Utility functions for converting between strings and core_content_t.
 */
#define PRCONTENTBUFSZ  80      /* buffer size for proc_content2str() */

extern int proc_str2content(const char *, core_content_t *);
extern int proc_content2str(core_content_t, char *, size_t);

/*
 * Utility functions for buffering output to stdout, stderr while
 * process is grabbed.  Prevents deadlocks due to pfiles `pgrep xterm`
 * and other varients.
 */
extern int proc_initstdio(void);
extern int proc_flushstdio(void);
extern int proc_finistdio(void);

/*
 * Iterate over all open files.
 */
typedef int proc_fdinfo_f(void *, prfdinfo_t *);
extern int Pfdinfo_iter(struct ps_prochandle *, proc_fdinfo_f *, void *);

#ifdef  __cplusplus
}
#endif

#endif  /* _LIBPROC_H */