d42df2a447
When looking up an object by name, allow prefix matches if no direct match is found. This allows one to, for example, match libc entry probes with: # dtrace -n 'pid$target:libc.so::entry' -c ./foo instead of requiring "libc.so.7" or a glob. Also remove proc_obj2map() as it currently just duplicates the functionality of proc_name2map(). It's supposed to take a Solaris link-map ID as a paramter, but support for this isn't implemented and isn't required to support DTrace's pid provider.
166 lines
5.3 KiB
C
166 lines
5.3 KiB
C
/*-
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* Copyright (c) 2010 The FreeBSD Foundation
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* Copyright (c) 2008 John Birrell (jb@freebsd.org)
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* All rights reserved.
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*
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* Portions of this software were developed by Rui Paulo under sponsorship
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* from the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _LIBPROC_H_
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#define _LIBPROC_H_
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#include <gelf.h>
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#include <rtld_db.h>
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#include <limits.h>
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struct ctf_file;
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struct proc_handle;
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typedef void (*proc_child_func)(void *);
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/* Values returned by proc_state(). */
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#define PS_IDLE 1
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#define PS_STOP 2
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#define PS_RUN 3
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#define PS_UNDEAD 4
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#define PS_DEAD 5
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#define PS_LOST 6
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/* Reason values for proc_detach(). */
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#define PRELEASE_HANG 1
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#define PRELEASE_KILL 2
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typedef struct prmap {
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uintptr_t pr_vaddr; /* Virtual address. */
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size_t pr_size; /* Mapping size in bytes */
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size_t pr_offset; /* Mapping offset in object */
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char pr_mapname[PATH_MAX]; /* Mapping filename */
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uint8_t pr_mflags; /* Protection flags */
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#define MA_READ 0x01
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#define MA_WRITE 0x02
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#define MA_EXEC 0x04
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#define MA_COW 0x08
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#define MA_NEEDS_COPY 0x10
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#define MA_NOCOREDUMP 0x20
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} prmap_t;
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typedef struct prsyminfo {
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u_int prs_lmid; /* Map id. */
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u_int prs_id; /* Symbol id. */
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} prsyminfo_t;
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typedef int proc_map_f(void *, const prmap_t *, const char *);
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typedef int proc_sym_f(void *, const GElf_Sym *, const char *);
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/* Values for ELF sections */
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#define PR_SYMTAB 1
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#define PR_DYNSYM 2
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/* Values for the 'mask' parameter in the iteration functions */
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#define BIND_LOCAL 0x0001
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#define BIND_GLOBAL 0x0002
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#define BIND_WEAK 0x0004
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#define BIND_ANY (BIND_LOCAL|BIND_GLOBAL|BIND_WEAK)
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#define TYPE_NOTYPE 0x0100
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#define TYPE_OBJECT 0x0200
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#define TYPE_FUNC 0x0400
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#define TYPE_SECTION 0x0800
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#define TYPE_FILE 0x1000
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#define TYPE_ANY (TYPE_NOTYPE|TYPE_OBJECT|TYPE_FUNC|TYPE_SECTION|\
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TYPE_FILE)
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typedef enum {
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REG_PC,
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REG_SP,
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REG_RVAL1,
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REG_RVAL2
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} proc_reg_t;
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#define SIG2STR_MAX 8
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typedef struct lwpstatus {
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int pr_why;
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#define PR_REQUESTED 1
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#define PR_FAULTED 2
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#define PR_SYSENTRY 3
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#define PR_SYSEXIT 4
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#define PR_SIGNALLED 5
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int pr_what;
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#define FLTBPT -1
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} lwpstatus_t;
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#define PR_MODEL_ILP32 1
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#define PR_MODEL_LP64 2
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struct proc_handle_public {
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pid_t pid;
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};
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#define proc_getpid(phdl) (((struct proc_handle_public *)(phdl))->pid)
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/* Function prototype definitions. */
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__BEGIN_DECLS
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prmap_t *proc_addr2map(struct proc_handle *, uintptr_t);
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prmap_t *proc_name2map(struct proc_handle *, const char *);
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char *proc_objname(struct proc_handle *, uintptr_t, char *, size_t);
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int proc_iter_objs(struct proc_handle *, proc_map_f *, void *);
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int proc_iter_symbyaddr(struct proc_handle *, const char *, int,
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int, proc_sym_f *, void *);
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int proc_addr2sym(struct proc_handle *, uintptr_t, char *, size_t, GElf_Sym *);
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int proc_attach(pid_t pid, int flags, struct proc_handle **pphdl);
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int proc_continue(struct proc_handle *);
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int proc_clearflags(struct proc_handle *, int);
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int proc_create(const char *, char * const *, proc_child_func *, void *,
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struct proc_handle **);
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int proc_detach(struct proc_handle *, int);
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int proc_getflags(struct proc_handle *);
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int proc_name2sym(struct proc_handle *, const char *, const char *,
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GElf_Sym *, prsyminfo_t *);
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struct ctf_file *proc_name2ctf(struct proc_handle *, const char *);
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int proc_setflags(struct proc_handle *, int);
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int proc_state(struct proc_handle *);
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int proc_getmodel(struct proc_handle *);
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int proc_wstatus(struct proc_handle *);
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int proc_getwstat(struct proc_handle *);
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char * proc_signame(int, char *, size_t);
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int proc_read(struct proc_handle *, void *, size_t, size_t);
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const lwpstatus_t *proc_getlwpstatus(struct proc_handle *);
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void proc_free(struct proc_handle *);
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rd_agent_t *proc_rdagent(struct proc_handle *);
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void proc_updatesyms(struct proc_handle *);
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int proc_bkptset(struct proc_handle *, uintptr_t, unsigned long *);
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int proc_bkptdel(struct proc_handle *, uintptr_t, unsigned long);
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void proc_bkptregadj(unsigned long *);
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int proc_bkptexec(struct proc_handle *, unsigned long);
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int proc_regget(struct proc_handle *, proc_reg_t, unsigned long *);
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int proc_regset(struct proc_handle *, proc_reg_t, unsigned long);
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__END_DECLS
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#endif /* _LIBPROC_H_ */
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