c156354ff8
Extend the file handle cache entries to include symbol tables as well. An index is used to implement binary search by symbol value. Lookups by name are comparatively rare and are thus still implemented with a linear search, but support for a binary search by name would be straightforward to add if needed.
90 lines
2.7 KiB
C
90 lines
2.7 KiB
C
/*-
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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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* 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 <sys/types.h>
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#include <sys/ptrace.h>
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#include <libelf.h>
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#include <rtld_db.h>
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#include "libproc.h"
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struct procstat;
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struct symtab {
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Elf_Data *data;
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u_int nsyms;
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u_int *index;
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u_long stridx;
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};
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struct file_info {
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Elf *elf;
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int fd;
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u_int refs;
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GElf_Ehdr ehdr;
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/* Symbol tables, sorted by value. */
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struct symtab dynsymtab;
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struct symtab symtab;
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};
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struct map_info {
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prmap_t map;
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struct file_info *file;
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};
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struct proc_handle {
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struct proc_handle_public public; /* Public fields. */
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int flags; /* Process flags. */
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int status; /* Process status (PS_*). */
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int wstat; /* Process wait status. */
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int model; /* Process data model. */
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rd_agent_t *rdap; /* librtld_db agent */
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struct map_info *mappings; /* File mappings for proc. */
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size_t maparrsz; /* Map array size. */
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size_t nmappings; /* Number of mappings. */
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prmap_t *exec_map; /* Executable text mapping. */
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lwpstatus_t lwps; /* Process status. */
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struct procstat *procstat; /* libprocstat handle. */
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char execpath[PATH_MAX]; /* Path to program executable. */
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};
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#ifdef DEBUG
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#define DPRINTF(...) warn(__VA_ARGS__)
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#define DPRINTFX(...) warnx(__VA_ARGS__)
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#else
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#define DPRINTF(...) do { } while (0)
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#define DPRINTFX(...) do { } while (0)
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#endif
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#endif /* __LIBPROC_H_ */
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