mirror of
https://github.com/ZDoom/gzdoom.git
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- added Chris's second crashcatcher patch.
SVN r3089 (trunk)
This commit is contained in:
Christoph Oelckers
parent
46ad4ec4bd
commit
82d0a0a98c
2 changed files with 227 additions and 156 deletions
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@ -4,21 +4,39 @@
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/wait.h>
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#include <sys/param.h>
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#include <sys/ucontext.h>
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#include <string.h>
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#include <errno.h>
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#include <sys/ucontext.h>
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// Solaris doesn't have SA_ONESHOT
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// According to the Linux header this is the same.
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#ifndef SA_ONESHOT
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#define SA_ONESHOT SA_RESETHAND
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#ifdef __linux__
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#include <sys/prctl.h>
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#ifndef PR_SET_PTRACER
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#define PR_SET_PTRACER 0x59616d61
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#endif
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#endif
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static const char *cc_logfile = NULL;
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static char respfile[256];
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static char buf[256];
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static char user_info_buf[1024];
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static const char crash_switch[] = "--cc-handle-crash";
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static const char fatal_err[] = "\n\n*** Fatal Error ***\n";
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static const char pipe_err[] = "!!! Failed to create pipe\n";
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static const char fork_err[] = "!!! Failed to fork debug process\n";
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static const char exec_err[] = "!!! Failed to exec debug process\n";
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static char argv0[PATH_MAX];
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static char altstack[SIGSTKSZ];
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static struct {
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int signum;
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pid_t pid;
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int has_siginfo;
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siginfo_t siginfo;
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char buf[1024];
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} crash_info;
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static const struct {
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const char *name;
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@ -88,16 +106,20 @@ static const struct {
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static int (*cc_user_info)(char*, char*);
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static void gdb_info(pid_t pid)
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{
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char respfile[64];
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char cmd_buf[128];
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FILE *f;
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int fd;
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/* Create a temp file to put gdb commands into */
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strcpy(respfile, "gdb-respfile-XXXXXX");
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if((fd = mkstemp(respfile)) >= 0 && (f = fdopen(fd, "w")))
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if((fd=mkstemp(respfile)) >= 0 && (f=fdopen(fd, "w")) != NULL)
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{
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fprintf(f, "shell echo \"\"\n"
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fprintf(f, "attach %d\n"
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"shell echo \"\"\n"
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"shell echo \"* Loaded Libraries\"\n"
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"info sharedlibrary\n"
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"shell echo \"\"\n"
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@ -110,21 +132,18 @@ static void gdb_info(pid_t pid)
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"shell echo \"* Registers\"\n"
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"info registers\n"
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"shell echo \"\"\n"
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"shell echo \"* Bytes near %%eip:\"\n"
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"x/x $eip-3\nx/x $eip\n"
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"shell echo \"\"\n"
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"shell echo \"* Backtrace\"\n"
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"thread apply all backtrace full\n"
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"detach\n"
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"quit\n");
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"quit\n", pid);
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fclose(f);
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/* Run gdb and print process info. */
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snprintf(buf, sizeof(buf), "gdb --quiet --batch --command=%s --pid=%i", respfile, pid);
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printf("Executing: %s\n", buf);
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snprintf(cmd_buf, sizeof(cmd_buf), "gdb --quiet --batch --command=%s", respfile);
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printf("Executing: %s\n", cmd_buf);
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fflush(stdout);
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system(buf);
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system(cmd_buf);
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/* Clean up */
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remove(respfile);
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}
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@ -136,56 +155,137 @@ static void gdb_info(pid_t pid)
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close(fd);
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remove(respfile);
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}
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printf("Could not create gdb command file\n");
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printf("!!! Could not create gdb command file\n");
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}
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fflush(stdout);
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kill(pid, SIGKILL);
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}
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static void sys_info(void)
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{
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#ifdef __unix__
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system("echo \"System: `uname -a`\"");
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putchar('\n');
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fflush(stdout);
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#endif
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}
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/* Generic system info */
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static void sys_info(void)
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static size_t safe_write(int fd, const void *buf, size_t len)
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{
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#if (defined __unix__)
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system("echo \"System: `uname -a`\"");
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#endif
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system("echo \"GCC version: `gcc -dumpversion`\"");
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putchar('\n');
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fflush(stdout);
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size_t ret = 0;
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while(ret < len)
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{
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ssize_t rem;
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if((rem=write(fd, (const char*)buf+ret, len-ret)) == -1)
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{
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if(errno == EINTR)
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continue;
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break;
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}
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ret += rem;
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}
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return ret;
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}
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static void crash_catcher(int signum, siginfo_t *siginfo, void *context)
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{
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ucontext_t *ucontext = (ucontext_t*)context;
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const char *sigdesc = NULL;
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pid_t pid, dbg_pid;
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struct stat sbuf;
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#ifndef __FreeBSD__
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struct rlimit rl;
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pid_t dbg_pid;
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int fd[2];
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/* Make sure the effective uid is the real uid */
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if(getuid() != geteuid())
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{
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raise(signum);
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return;
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}
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safe_write(STDERR_FILENO, fatal_err, sizeof(fatal_err)-1);
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if(pipe(fd) == -1)
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{
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safe_write(STDERR_FILENO, pipe_err, sizeof(pipe_err)-1);
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raise(signum);
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return;
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}
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crash_info.signum = signum;
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crash_info.pid = getpid();
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crash_info.has_siginfo = !!siginfo;
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if(siginfo)
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crash_info.siginfo = *siginfo;
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if(cc_user_info)
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cc_user_info(crash_info.buf, crash_info.buf+sizeof(crash_info.buf));
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/* Fork off to start a crash handler */
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switch((dbg_pid=fork()))
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{
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/* Error */
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case -1:
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safe_write(STDERR_FILENO, fork_err, sizeof(fork_err)-1);
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raise(signum);
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return;
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case 0:
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dup2(fd[0], STDIN_FILENO);
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close(fd[0]);
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close(fd[1]);
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execl(argv0, argv0, crash_switch, NULL);
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safe_write(STDERR_FILENO, exec_err, sizeof(exec_err)-1);
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_exit(1);
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default:
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#ifdef __linux__
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prctl(PR_SET_PTRACER, dbg_pid, 0, 0, 0);
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#endif
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int status, i;
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FILE *f;
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safe_write(fd[1], &crash_info, sizeof(crash_info));
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close(fd[0]);
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close(fd[1]);
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/* Wait; we'll be killed when gdb is done */
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do {
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int status;
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if(waitpid(dbg_pid, &status, 0) == dbg_pid &&
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(WIFEXITED(status) || WIFSIGNALED(status)))
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{
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/* The debug process died before it could kill us */
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raise(signum);
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break;
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}
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} while(1);
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}
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}
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static void crash_handler(const char *logfile)
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{
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const char *sigdesc = "";
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int i;
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if(fread(&crash_info, sizeof(crash_info), 1, stdin) != 1)
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{
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fprintf(stderr, "!!! Failed to retrieve info from crashed process\n");
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exit(1);
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}
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/* Get the signal description */
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if(!siginfo)
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{
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for(i = 0;signals[i].name;++i)
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{
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if(signals[i].signum == signum)
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if(signals[i].signum == crash_info.signum)
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{
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sigdesc = signals[i].name;
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break;
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}
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}
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}
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else
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if(crash_info.has_siginfo)
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{
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switch(signum)
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switch(crash_info.signum)
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{
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case SIGSEGV:
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for(i = 0;sigsegv_codes[i].name;++i)
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{
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if(sigsegv_codes[i].code == siginfo->si_code)
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if(sigsegv_codes[i].code == crash_info.siginfo.si_code)
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{
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sigdesc = sigsegv_codes[i].name;
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break;
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@ -196,7 +296,7 @@ static void crash_catcher(int signum, siginfo_t *siginfo, void *context)
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case SIGFPE:
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for(i = 0;sigfpe_codes[i].name;++i)
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{
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if(sigfpe_codes[i].code == siginfo->si_code)
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if(sigfpe_codes[i].code == crash_info.siginfo.si_code)
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{
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sigdesc = sigfpe_codes[i].name;
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break;
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@ -207,7 +307,7 @@ static void crash_catcher(int signum, siginfo_t *siginfo, void *context)
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case SIGILL:
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for(i = 0;sigill_codes[i].name;++i)
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{
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if(sigill_codes[i].code == siginfo->si_code)
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if(sigill_codes[i].code == crash_info.siginfo.si_code)
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{
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sigdesc = sigill_codes[i].name;
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break;
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@ -218,7 +318,7 @@ static void crash_catcher(int signum, siginfo_t *siginfo, void *context)
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case SIGBUS:
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for(i = 0;sigbus_codes[i].name;++i)
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{
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if(sigbus_codes[i].code == siginfo->si_code)
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if(sigbus_codes[i].code == crash_info.siginfo.si_code)
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{
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sigdesc = sigbus_codes[i].name;
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break;
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@ -227,120 +327,91 @@ static void crash_catcher(int signum, siginfo_t *siginfo, void *context)
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break;
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}
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}
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fprintf(stderr, "%s (signal %i)\n", sigdesc, crash_info.signum);
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if(crash_info.has_siginfo)
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fprintf(stderr, "Address: %p\n", crash_info.siginfo.si_addr);
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fputc('\n', stderr);
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if(!sigdesc)
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if(logfile)
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{
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/* Unknown signal, let the default handler deal with it */
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raise(signum);
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return;
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/* Create crash log file and redirect shell output to it */
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if(freopen(logfile, "wa", stdout) != stdout)
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{
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fprintf(stderr, "!!! Could not create %s following signal\n", logfile);
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exit(1);
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}
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fprintf(stderr, "Generating %s and killing process %d, please wait... ", logfile, crash_info.pid);
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printf("*** Fatal Error ***\n"
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"%s (signal %i)\n", sigdesc, crash_info.signum);
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if(crash_info.has_siginfo)
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printf("Address: %p\n", crash_info.siginfo.si_addr);
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fputc('\n', stdout);
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fflush(stdout);
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}
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#if 0 /* Do we need this? */
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/* Make sure the effective uid is the real uid */
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if (getuid() != geteuid())
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{
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raise(signum);
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return;
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}
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#endif
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/* Create crash log file */
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if(cc_logfile)
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{
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f = fopen(cc_logfile, "w");
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if(!f)
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{
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fprintf(stderr, "Could not create %s following signal.\n", cc_logfile);
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raise(signum);
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return;
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}
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}
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else
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f = stderr;
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/* Get current process id and fork off */
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pid = getpid();
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switch ((dbg_pid = fork()))
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{
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/* Error */
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case -1:
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break;
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case 0:
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fprintf(stderr, "\n\n*** Fatal Error ***\n"
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"%s (signal %i)\n", sigdesc, signum);
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/* Redirect shell output */
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close(STDOUT_FILENO);
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dup2(fileno(f), STDOUT_FILENO);
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if(f != stderr)
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{
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fprintf(stderr, "\nGenerating %s and killing process %i, please wait... ", cc_logfile, pid);
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fprintf(f, "*** Fatal Error ***\n"
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"%s (signal %i)\n", sigdesc, signum);
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}
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if(siginfo)
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fprintf(f, "Address: %p\n", siginfo->si_addr);
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fputc('\n', f);
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fflush(f);
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/* Get info */
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sys_info();
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if(cc_user_info)
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{
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if(cc_user_info(user_info_buf, user_info_buf+sizeof(user_info_buf)) > 0)
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{
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fprintf(f, "%s\n", user_info_buf);
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fflush(f);
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}
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}
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gdb_info(pid);
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if(f != stderr)
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crash_info.buf[sizeof(crash_info.buf)-1] = '\0';
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printf("%s\n", crash_info.buf);
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fflush(stdout);
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if(crash_info.pid > 0)
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{
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fclose(f);
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#if (defined __unix__)
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if(cc_logfile)
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gdb_info(crash_info.pid);
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kill(crash_info.pid, SIGKILL);
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}
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if(logfile)
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{
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const char *str;
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char buf[512];
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snprintf(buf, sizeof(buf),
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"if (which gxmessage > /dev/null 2>&1) ; then\n"
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" gxmessage -buttons \"Damn it:0\" -center -title \"Very Fatal Error\" -file %s\n"
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"elif (which xmessage > /dev/null 2>&1) ; then\n"
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" xmessage -buttons \"Damn it:0\" -center -file %s -geometry 600x400\n"
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"fi", cc_logfile, cc_logfile);
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if((str=getenv("KDE_FULL_SESSION")) && strcmp(str, "true") == 0)
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snprintf(buf, sizeof(buf), "kdialog --title \"Very Fatal Error\" --textbox \"%s\" 800 600", logfile);
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else if((str=getenv("GNOME_DESKTOP_SESSION_ID")) && str[0] != '\0')
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snprintf(buf, sizeof(buf), "gxmessage -buttons \"Okay:0\" -geometry 800x600 -title \"Very Fatal Error\" -center -file \"%s\"", logfile);
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else
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snprintf(buf, sizeof(buf), "xmessage -buttons \"Okay:0\" -center -file \"%s\"", logfile);
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system(buf);
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}
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#endif
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}
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_exit(0);
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default:
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/* Wait indefinitely; we'll be killed when gdb is done */
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while(1) usleep(1000000);
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}
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exit(0);
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}
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int cc_install_handlers(int num_signals, int *signals, const char *logfile, int (*user_info)(char*, char*))
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int cc_install_handlers(int argc, char **argv, int num_signals, int *signals, const char *logfile, int (*user_info)(char*, char*))
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{
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int retval = 0;
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struct sigaction sa;
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memset(&sa, 0, sizeof(sa));
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stack_t altss;
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int retval;
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sa.sa_sigaction = crash_catcher;
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if(argc == 2 && strcmp(argv[1], crash_switch) == 0)
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crash_handler(logfile);
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#ifdef SA_ONESHOT
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sa.sa_flags = SA_ONESHOT | SA_NODEFER | SA_SIGINFO;
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#else
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sa.sa_flags = SA_NODEFER | SA_SIGINFO;
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#endif
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sigemptyset(&sa.sa_mask);
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cc_logfile = logfile;
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cc_user_info = user_info;
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if(argv[0][0] == '/')
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snprintf(argv0, sizeof(argv0), "%s", argv[0]);
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else
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{
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getcwd(argv0, sizeof(argv0));
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retval = strlen(argv0);
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snprintf(argv0+retval, sizeof(argv0)-retval, "/%s", argv[0]);
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}
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/* Set an alternate signal stack so SIGSEGVs caused by stack overflows
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* still run */
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altss.ss_sp = altstack;
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altss.ss_flags = 0;
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altss.ss_size = sizeof(altstack);
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sigaltstack(&altss, NULL);
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memset(&sa, 0, sizeof(sa));
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sa.sa_sigaction = crash_catcher;
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sa.sa_flags = SA_RESETHAND | SA_NODEFER | SA_SIGINFO | SA_ONSTACK;
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sigemptyset(&sa.sa_mask);
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retval = 0;
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while(num_signals--)
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{
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if((*signals != SIGSEGV && *signals != SIGILL && *signals != SIGFPE &&
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@ -351,6 +422,5 @@ int cc_install_handlers(int num_signals, int *signals, const char *logfile, int
|
|||
}
|
||||
++signals;
|
||||
}
|
||||
|
||||
return retval;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -73,7 +73,7 @@
|
|||
|
||||
// EXTERNAL FUNCTION PROTOTYPES --------------------------------------------
|
||||
|
||||
extern "C" int cc_install_handlers(int, int*, const char*, int(*)(char*, char*));
|
||||
extern "C" int cc_install_handlers(int, char**, int, int*, const char*, int(*)(char*, char*));
|
||||
|
||||
// PUBLIC FUNCTION PROTOTYPES ----------------------------------------------
|
||||
|
||||
|
|
@ -156,13 +156,14 @@ static void STACK_ARGS NewFailure ()
|
|||
static int DoomSpecificInfo (char *buffer, char *end)
|
||||
{
|
||||
const char *arg;
|
||||
int size = end-buffer;
|
||||
int size = end-buffer-2;
|
||||
int i, p;
|
||||
|
||||
SDL_Quit();
|
||||
|
||||
p = 0;
|
||||
p += snprintf (buffer+p, size-p, GAMENAME" version " DOTVERSIONSTR " (" __DATE__ ")\n");
|
||||
#ifdef __VERSION__
|
||||
p += snprintf (buffer+p, size-p, "Compiler version: %s\n", __VERSION__);
|
||||
#endif
|
||||
p += snprintf (buffer+p, size-p, "\nCommand line:");
|
||||
for (i = 0; i < Args->NumArgs(); ++i)
|
||||
{
|
||||
|
|
@ -250,14 +251,14 @@ void I_ShutdownJoysticks();
|
|||
|
||||
int main (int argc, char **argv)
|
||||
{
|
||||
printf(GAMENAME" v%s - SVN revision %s - SDL version\nCompiled on %s\n\n",
|
||||
DOTVERSIONSTR_NOREV,SVN_REVISION_STRING,__DATE__);
|
||||
|
||||
{
|
||||
int s[4] = { SIGSEGV, SIGILL, SIGFPE, SIGBUS };
|
||||
cc_install_handlers(4, s, "zdoom-crash.log", DoomSpecificInfo);
|
||||
cc_install_handlers(argc, argv, 4, s, "zdoom-crash.log", DoomSpecificInfo);
|
||||
}
|
||||
|
||||
printf(GAMENAME" v%s - SVN revision %s - SDL version\nCompiled on %s\n\n",
|
||||
DOTVERSIONSTR_NOREV,SVN_REVISION_STRING,__DATE__);
|
||||
|
||||
seteuid (getuid ());
|
||||
std::set_new_handler (NewFailure);
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue