71 lines
2.5 KiB
Text
71 lines
2.5 KiB
Text
# This file is part of ltrace.
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# Copyright (C) 2013, 2014 Petr Machata, Red Hat Inc.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation; either version 2 of the
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# License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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# 02110-1301 USA
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set bin [ltraceCompile {} [ltraceSource c {
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#define _GNU_SOURCE
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/syscall.h> /* For SYS_xxx definitions */
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#ifndef SYS_open
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# if defined(__aarch64__)
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# /* Linux doesn't actually implement SYS_open on AArch64, but for merely
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# * recording the syscall, it's fine. */
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# define SYS_open 1024
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# else
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# error SYS_open not available.
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# endif
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#endif
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int main(void) {
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syscall(SYS_open, "/some/path", O_RDONLY);
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write(1, "something", 10);
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mount("source", "target", "filesystemtype", 0, 0);
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}
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}]]
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set dir [ltraceDir]
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set conf [ltraceNamedSource "$dir/syscalls.conf" {
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int open(string, int);
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long write(int, string[arg3], ulong);
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int mount(string, string, string, ulong, addr);
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}]
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# When given the file directly via -F, ltrace should not use it for
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# formatting system calls. The reason is that libraries are generally
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# allowed to have functions with the same names as system calls
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# (there's no interference between those two). In particular,
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# readdir@SYS has a different prototype from readdir@libc. If a -F
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# somelib.conf is passed, and syscalls.conf is not available, or
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# doesn't list readdir, that would be taken from somelib.conf with a
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# wrong prototype.
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ltraceMatch1 [ltraceRun -L -S -F $conf -- $bin] {^open@SYS\("/some/path"} == 0
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# On the other hand, if -F somedir/ is given, we want to accept
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# syscalls.conf found there.
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ltraceMatch [ltraceRun -L -S -F $dir -- $bin] {
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{{^open@SYS\("/some/path"} == 1}
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{{^write@SYS\(1, "something", 10\)} == 1}
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{{^mount@SYS\("source", "target", "filesystemtype"} == 1}
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}
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ltraceDone
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