mirror of https://github.com/edeproject/ede.git
134 lines
3.2 KiB
C++
134 lines
3.2 KiB
C++
/*
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* $Id$
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*
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* ede-crasher, a crash handler tool
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* Part of Equinox Desktop Environment (EDE).
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* Copyright (c) 2008-2009 EDE Authors.
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*
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* This program is licensed under terms of the
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* GNU General Public License version 2 or newer.
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* See COPYING for details.
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*/
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#include <string.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <edelib/Debug.h>
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#include <edelib/File.h>
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#include <edelib/FileTest.h>
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#include <edelib/TempFile.h>
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#include "GdbOutput.h"
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#define CORE_FILE "core"
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EDELIB_NS_USING(String)
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EDELIB_NS_USING(TempFile)
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EDELIB_NS_USING(file_path)
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EDELIB_NS_USING(file_test)
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EDELIB_NS_USING(file_remove)
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EDELIB_NS_USING(FILE_TEST_IS_REGULAR)
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static int write_str(int fd, const char *str) {
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int len = strlen(str);
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return ::write(fd, str, len);
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}
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bool gdb_output_generate(const char *path, TempFile &t, int pid) {
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E_RETURN_VAL_IF_FAIL(path != NULL, false);
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int tfd = -1;
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TempFile scr;
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if(!scr.create("/tmp/.ecrash-script")) {
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E_WARNING(E_STRLOC ": Unable to create temporary file for debugger script: (%i) %s",
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scr.status(), strerror(scr.status()));
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return false;
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}
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if(!t.create("/tmp/.ecrash-output")) {
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E_WARNING(E_STRLOC ": Unable to create temporary file for debugger output: (%i) %s",
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t.status(), strerror(t.status()));
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return false;
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}
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tfd = t.handle();
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/* write script */
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::write(scr.handle(), "bt\nquit\n", 8);
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scr.set_auto_delete(true);
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scr.close();
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String gdb_path = file_path("gdb");
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if(gdb_path.empty()) {
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/* write straight to the file, so dialog could show it */
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write_str(tfd, "Unable to find gdb. Please install it first");
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/* see it as valid, so dialog could be shown */
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return true;
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}
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/*
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* to find core file, we will try these strategies: first try to open 'core.PID' if
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* we got PID (default on linux); if does not exists, try to open 'core'; everything is
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* assumed current folder, whatever it was set
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*/
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bool core_found = false;
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String core_path;
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if(pid > -1) {
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core_path.printf("%s.%i", CORE_FILE, pid);
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if(file_test(core_path.c_str(), FILE_TEST_IS_REGULAR))
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core_found = true;
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}
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if(!core_found) {
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core_path = CORE_FILE;
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if(file_test(core_path.c_str(), FILE_TEST_IS_REGULAR))
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core_found = true;
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}
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if(!core_found) {
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write_str(tfd, "Unable to find core file. Backtrace will not be done.");
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/* see it as valid, so dialog could be shown */
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return true;
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}
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pid_t gdb_pid = fork();
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if(gdb_pid == -1) {
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E_WARNING(E_STRLOC ": Unable to fork the process\n");
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return false;
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} else if(gdb_pid == 0) {
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/* child; redirect to the file */
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dup2(tfd, 1);
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t.close();
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::write(1, " ", 1);
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char* argv[8];
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argv[0] = (char*)gdb_path.c_str();
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argv[1] = (char*)"--quiet";
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argv[2] = (char*)"--batch";
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argv[3] = (char*)"-x";
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argv[4] = (char*)scr.name();
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argv[5] = (char*)path;
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argv[6] = (char*)core_path.c_str();
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argv[7] = 0;
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execvp(argv[0], argv);
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return false;
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} else {
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int status;
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if(waitpid(gdb_pid, &status, 0) != gdb_pid) {
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E_WARNING(E_STRLOC ": Failed to execute waitpid() properly\n");
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return false;
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}
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}
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file_remove(core_path.c_str());
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return true;
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}
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