592 lines
18 KiB
C
592 lines
18 KiB
C
#include "config.h"
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <dlfcn.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <sys/stat.h>
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#include <sys/utsname.h>
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#ifdef HAVE_SYS_PTRACE_H
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# include <sys/ptrace.h>
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#endif
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#include <limits.h>
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#include <fcntl.h>
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#ifdef HAVE_ALLOCA_H
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# include <alloca.h>
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#endif
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#include <signal.h>
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#include <errno.h>
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#include <Eina.h>
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static Eina_Bool stop_ptrace = EINA_FALSE;
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static void env_set(const char *var, const char *val);
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EAPI int prefix_determine(char *argv0);
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static void
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env_set(const char *var, const char *val)
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{
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if (val)
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{
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#ifdef HAVE_SETENV
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setenv(var, val, 1);
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#else
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char *buf;
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size_t size = strlen(var) + 1 + strlen(val) + 1;
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buf = alloca(size);
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sprintf(buf, "%s=%s", var, val);
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if (getenv(var)) putenv(buf);
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else putenv(strdup(buf));
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#endif
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}
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else
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{
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#ifdef HAVE_UNSETENV
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unsetenv(var);
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#else
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if (getenv(var)) putenv(var);
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#endif
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}
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}
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/* local subsystem globals */
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static Eina_Prefix *pfx = NULL;
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/* externally accessible functions */
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EAPI int
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prefix_determine(char *argv0)
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{
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pfx = eina_prefix_new(argv0, prefix_determine,
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"E", "enlightenment", "AUTHORS",
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PACKAGE_BIN_DIR, PACKAGE_LIB_DIR,
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PACKAGE_DATA_DIR, LOCALE_DIR);
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if (!pfx) return 0;
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return 1;
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}
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static int
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find_valgrind(char *path, size_t path_len)
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{
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const char *env = getenv("PATH");
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while (env)
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{
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const char *p = strchr(env, ':');
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ssize_t p_len;
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if (p) p_len = p - env;
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else p_len = strlen(env);
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if (p_len <= 0) goto next;
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else if (p_len + sizeof("/valgrind") >= path_len)
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goto next;
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memcpy(path, env, p_len);
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memcpy(path + p_len, "/valgrind", sizeof("/valgrind"));
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if (access(path, X_OK | R_OK) == 0) return 1;
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next:
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if (p) env = p + 1;
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else break;
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}
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path[0] = '\0';
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return 0;
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}
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/* maximum number of arguments added above */
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#define VALGRIND_MAX_ARGS 10
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/* bitmask with all supported bits set */
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#define VALGRIND_MODE_ALL 15
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static int
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valgrind_append(char **dst, int valgrind_gdbserver, int valgrind_mode, int valgrind_tool, char *valgrind_path, const char *valgrind_log)
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{
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int i = 0;
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if (valgrind_tool)
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{
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dst[i++] = valgrind_path;
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switch (valgrind_tool)
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{
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case 1: dst[i++] = "--tool=massif"; break;
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case 2: dst[i++] = "--tool=callgrind"; break;
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}
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return i;
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}
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if (valgrind_gdbserver) dst[i++] = "--db-attach=yes";
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if (!valgrind_mode) return 0;
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dst[i++] = valgrind_path;
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dst[i++] = "--track-origins=yes";
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dst[i++] = "--malloc-fill=13"; /* invalid pointer, make it crash */
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if (valgrind_log)
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{
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static char logparam[PATH_MAX + sizeof("--log-file=")];
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snprintf(logparam, sizeof(logparam), "--log-file=%s", valgrind_log);
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dst[i++] = logparam;
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}
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if (valgrind_mode & 2) dst[i++] = "--trace-children=yes";
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if (valgrind_mode & 4)
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{
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dst[i++] = "--leak-check=full";
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dst[i++] = "--leak-resolution=high";
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dst[i++] = "--track-fds=yes";
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}
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if (valgrind_mode & 8) dst[i++] = "--show-reachable=yes";
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return i;
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}
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static void
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copy_args(char **dst, char **src, size_t count)
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{
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for (; count > 0; count--, dst++, src++)
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*dst = *src;
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}
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static void
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_env_path_prepend(const char *env, const char *path)
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{
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char *p, *s;
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const char *p2;
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int len = 0, len2 = 0;
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if (!path) return;
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p = getenv(env);
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p2 = path;
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len2 = strlen(p2);
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if (p)
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{
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len = strlen(p);
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// path already there at the start. dont prepend. :)
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if ((!strcmp(p, p2)) ||
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((len > len2) &&
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(!strncmp(p, p2, len2)) &&
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(p[len2] == ':')))
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return;
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}
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s = malloc(len + 1 + len2 + 1);
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if (s)
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{
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s[0] = 0;
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strcat(s, p2);
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if (p)
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{
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strcat(s, ":");
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strcat(s, p);
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}
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env_set(env, s);
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free(s);
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}
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}
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static void
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_env_path_append(const char *env, const char *path)
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{
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char *p, *s;
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const char *p2;
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int len = 0, len2 = 0;
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if (!path) return;
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p = getenv(env);
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p2 = path;
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len2 = strlen(p2);
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if (p)
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{
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len = strlen(p);
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// path already there at the end. dont append. :)
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if ((!strcmp(p, p2)) ||
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((len > len2) &&
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(!strcmp((p + len - len2), p2)) &&
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(p[len - len2 - 1] == ':')))
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return;
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}
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s = malloc(len + 1 + len2 + 1);
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if (s)
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{
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s[0] = 0;
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if (p)
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{
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strcat(s, p);
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strcat(s, ":");
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}
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strcat(s, p2);
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env_set(env, s);
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free(s);
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}
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}
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static void
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_sigusr1(int x __UNUSED__, siginfo_t *info __UNUSED__, void *data __UNUSED__)
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{
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struct sigaction action;
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/* release ptrace */
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stop_ptrace = EINA_TRUE;
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action.sa_sigaction = _sigusr1;
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action.sa_flags = SA_RESETHAND;
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sigemptyset(&action.sa_mask);
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sigaction(SIGUSR1, &action, NULL);
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}
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int
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main(int argc, char **argv)
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{
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int i, valgrind_mode = 0;
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int valgrind_tool = 0;
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int valgrind_gdbserver = 0;
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char buf[16384], **args, *home;
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char valgrind_path[PATH_MAX] = "";
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const char *valgrind_log = NULL;
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Eina_Bool really_know = EINA_FALSE;
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struct sigaction action;
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#if !defined(__OpenBSD__) && !defined(__NetBSD__) && !defined(__FreeBSD__) && \
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!(defined (__MACH__) && defined (__APPLE__))
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Eina_Bool restart = EINA_TRUE;
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#endif
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/* Setup USR1 to detach from the child process and let it get gdb by advanced users */
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action.sa_sigaction = _sigusr1;
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action.sa_flags = SA_RESETHAND;
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sigemptyset(&action.sa_mask);
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sigaction(SIGUSR1, &action, NULL);
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eina_init();
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/* reexcute myself with dbus-launch if dbus-launch is not running yet */
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if ((!getenv("DBUS_SESSION_BUS_ADDRESS")) &&
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(!getenv("DBUS_LAUNCHD_SESSION_BUS_SOCKET")))
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{
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char **dbus_argv;
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dbus_argv = alloca((argc + 3) * sizeof (char *));
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dbus_argv[0] = "dbus-launch";
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dbus_argv[1] = "--exit-with-session";
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copy_args(dbus_argv + 2, argv, argc);
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dbus_argv[2 + argc] = NULL;
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execvp("dbus-launch", dbus_argv);
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}
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prefix_determine(argv[0]);
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env_set("E_START", argv[0]);
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for (i = 1; i < argc; i++)
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{
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if (!strcmp(argv[i], "-valgrind-gdb"))
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valgrind_gdbserver = 1;
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else if (!strncmp(argv[i], "-valgrind", sizeof("-valgrind") - 1))
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{
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const char *val = argv[i] + sizeof("-valgrind") - 1;
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if (*val == '\0') valgrind_mode = 1;
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else if (*val == '-')
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{
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val++;
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if (!strncmp(val, "log-file=", sizeof("log-file=") - 1))
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{
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valgrind_log = val + sizeof("log-file=") - 1;
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if (*valgrind_log == '\0') valgrind_log = NULL;
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}
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}
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else if (*val == '=')
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{
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val++;
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if (!strcmp(val, "all")) valgrind_mode = VALGRIND_MODE_ALL;
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else valgrind_mode = atoi(val);
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}
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else
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printf("Unknown valgrind option: %s\n", argv[i]);
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}
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else if (!strcmp(argv[i], "-display"))
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{
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i++;
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env_set("DISPLAY", argv[i]);
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}
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else if (!strcmp(argv[i], "-massif"))
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valgrind_tool = 1;
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else if (!strcmp(argv[i], "-callgrind"))
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valgrind_tool = 2;
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else if ((!strcmp(argv[i], "-h")) ||
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(!strcmp(argv[i], "-help")) ||
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(!strcmp(argv[i], "--help")))
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{
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printf
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(
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"Options:\n"
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"\t-valgrind[=MODE]\n"
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"\t\tRun enlightenment from inside valgrind, mode is OR of:\n"
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"\t\t 1 = plain valgrind to catch crashes (default)\n"
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"\t\t 2 = trace children (thumbnailer, efm slaves, ...)\n"
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"\t\t 4 = check leak\n"
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"\t\t 8 = show reachable after processes finish.\n"
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"\t\t all = all of above\n"
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"\t-massif\n"
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"\t\tRun enlightenment from inside massif valgrind tool.\n"
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"\t-callgrind\n"
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"\t\tRun enlightenment from inside callgrind valgrind tool.\n"
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"\t-valgrind-log-file=<FILENAME>\n"
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"\t\tSave valgrind log to file, see valgrind's --log-file for details.\n"
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"\n"
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"Please run:\n"
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"\tenlightenment %s\n"
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"for more options.\n",
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argv[i]);
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exit(0);
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}
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else if (!strcmp(argv[i], "-i-really-know-what-i-am-doing-and-accept-full-responsibility-for-it"))
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really_know = EINA_TRUE;
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}
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if (really_know)
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_env_path_append("PATH", eina_prefix_bin_get(pfx));
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else
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_env_path_prepend("PATH", eina_prefix_bin_get(pfx));
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if (valgrind_mode || valgrind_tool)
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{
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if (!find_valgrind(valgrind_path, sizeof(valgrind_path)))
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{
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printf("E - valgrind required but no binary found! Ignoring request.\n");
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valgrind_mode = 0;
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}
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}
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printf("E - PID=%i, valgrind=%d", getpid(), valgrind_mode);
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if (valgrind_mode)
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{
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printf(" valgrind-command='%s'", valgrind_path);
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if (valgrind_log) printf(" valgrind-log-file='%s'", valgrind_log);
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}
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putchar('\n');
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/* mtrack memory tracker support */
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home = getenv("HOME");
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if (home)
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{
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FILE *f;
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/* if you have ~/.e-mtrack, then the tracker will be enabled
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* using the content of this file as the path to the mtrack.so
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* shared object that is the mtrack preload */
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snprintf(buf, sizeof(buf), "%s/.e-mtrack", home);
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f = fopen(buf, "r");
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if (f)
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{
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if (fgets(buf, sizeof(buf), f))
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{
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int len = strlen(buf);
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if ((len > 1) && (buf[len - 1] == '\n'))
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{
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buf[len - 1] = 0;
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len--;
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}
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env_set("LD_PRELOAD", buf);
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env_set("MTRACK", "track");
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env_set("E_START_MTRACK", "track");
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snprintf(buf, sizeof(buf), "%s/.e-mtrack.log", home);
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env_set("MTRACK_TRACE_FILE", buf);
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}
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fclose(f);
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}
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}
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/* run e directly now */
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snprintf(buf, sizeof(buf), "%s/enlightenment", eina_prefix_bin_get(pfx));
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args = alloca((argc + 2 + VALGRIND_MAX_ARGS) * sizeof(char *));
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i = valgrind_append(args, valgrind_gdbserver, valgrind_mode, valgrind_tool, valgrind_path, valgrind_log);
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args[i++] = buf;
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copy_args(args + i, argv + 1, argc - 1);
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args[i + argc - 1] = NULL;
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if (valgrind_tool || valgrind_mode)
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really_know = EINA_TRUE;
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#if defined(__OpenBSD__) || defined(__NetBSD__) || defined(__FreeBSD__) || \
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(defined (__MACH__) && defined (__APPLE__))
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execv(args[0], args);
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#endif
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/* not run at the moment !! */
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#if !defined(__OpenBSD__) && !defined(__NetBSD__) && !defined(__FreeBSD__) && \
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!(defined (__MACH__) && defined (__APPLE__))
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/* Now looping until */
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while (restart)
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{
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pid_t child;
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child = fork();
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if (child < 0) /* failed attempt */
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return -1;
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else if (child == 0)
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{
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#ifdef HAVE_SYS_PTRACE_H
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if (!really_know)
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/* in the child */
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ptrace(PT_TRACE_ME, 0, NULL, NULL);
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#endif
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execv(args[0], args);
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return 0; /* We failed, 0 mean normal exit from E with no restart or crash so let exit */
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}
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else
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{
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env_set("E_RESTART", "1");
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/* in the parent */
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pid_t result;
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int status;
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Eina_Bool done = EINA_FALSE;
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#ifdef HAVE_SYS_PTRACE_H
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if (!really_know)
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ptrace(PT_ATTACH, child, NULL, NULL);
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#endif
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result = waitpid(child, &status, 0);
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#ifdef HAVE_SYS_PTRACE_H
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if ((!really_know) && (!stop_ptrace))
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{
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if (WIFSTOPPED(status))
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ptrace(PT_CONTINUE, child, NULL, NULL);
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}
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#endif
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while (!done)
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{
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Eina_Bool remember_sigill = EINA_FALSE;
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Eina_Bool remember_sigusr1 = EINA_FALSE;
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result = waitpid(child, &status, 0);
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if (result == child)
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{
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if ((WIFSTOPPED(status)) && (!stop_ptrace))
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{
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char buffer[4096];
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char *backtrace_str = NULL;
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siginfo_t sig;
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int r = 0;
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int back;
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#ifdef HAVE_SYS_PTRACE_H
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if (!really_know)
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r = ptrace(PT_GETSIGINFO, child, NULL, &sig);
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#endif
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back = r == 0 &&
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sig.si_signo != SIGTRAP ? sig.si_signo : 0;
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if (sig.si_signo == SIGUSR1)
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{
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if (remember_sigill)
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remember_sigusr1 = EINA_TRUE;
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}
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else if (sig.si_signo == SIGILL)
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{
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remember_sigill = EINA_TRUE;
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}
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else
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{
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remember_sigill = EINA_FALSE;
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}
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if (r != 0 ||
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(sig.si_signo != SIGSEGV &&
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sig.si_signo != SIGFPE &&
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sig.si_signo != SIGBUS &&
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sig.si_signo != SIGABRT))
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{
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#ifdef HAVE_SYS_PTRACE_H
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if (!really_know)
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ptrace(PT_CONTINUE, child, NULL, back);
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#endif
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continue;
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}
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#ifdef HAVE_SYS_PTRACE_H
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if (!really_know)
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/* E17 should be in pause, we can detach */
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ptrace(PT_DETACH, child, NULL, back);
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#endif
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/* And call gdb if available */
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r = 0;
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if (home)
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{
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/* call e_sys gdb */
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snprintf(buffer, 4096,
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"%s/enlightenment/utils/enlightenment_sys gdb %i %s/.e-crashdump.txt",
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eina_prefix_lib_get(pfx),
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child,
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home);
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r = system(buffer);
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fprintf(stderr, "called gdb with '%s' = %i\n",
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buffer, WEXITSTATUS(r));
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snprintf(buffer, 4096,
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"%s/.e-crashdump.txt",
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home);
|
|
|
|
backtrace_str = strdup(buffer);
|
|
r = WEXITSTATUS(r);
|
|
}
|
|
|
|
/* call e_alert */
|
|
snprintf(buffer, 4096,
|
|
backtrace_str ?
|
|
"%s/enlightenment/utils/enlightenment_alert %i %i '%s' %i" :
|
|
"%s/enlightenment/utils/enlightenment_alert %i %i '%s' %i",
|
|
eina_prefix_lib_get(pfx),
|
|
sig.si_signo == SIGSEGV && remember_sigusr1 ? SIGILL : sig.si_signo,
|
|
child,
|
|
backtrace_str,
|
|
r);
|
|
r = system(buffer);
|
|
|
|
/* kill e */
|
|
kill(child, SIGKILL);
|
|
|
|
if (WEXITSTATUS(r) != 1)
|
|
{
|
|
restart = EINA_FALSE;
|
|
}
|
|
}
|
|
else if (!WIFEXITED(status))
|
|
{
|
|
done = EINA_TRUE;
|
|
}
|
|
else if (stop_ptrace)
|
|
{
|
|
done = EINA_TRUE;
|
|
}
|
|
}
|
|
else if (result == -1)
|
|
{
|
|
if (errno != EINTR)
|
|
{
|
|
done = EINA_TRUE;
|
|
restart = EINA_FALSE;
|
|
}
|
|
else
|
|
{
|
|
if (stop_ptrace)
|
|
{
|
|
kill(child, SIGSTOP);
|
|
usleep(200000);
|
|
#ifdef HAVE_SYS_PTRACE_H
|
|
if (!really_know)
|
|
ptrace(PT_DETACH, child, NULL, NULL);
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
return -1;
|
|
}
|
|
|