557 lines
12 KiB
C
557 lines
12 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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#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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static void env_set(const char *var, const char *val);
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static 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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buf = alloca(strlen(var) + 1 + strlen(val) + 1);
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snprintf(buf, sizeof(buf), "%s=%s", var, val);
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if (getenv(var))
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putenv(buf);
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else
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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 functions */
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static int _prefix_fallbacks(void);
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static int _prefix_try_proc(void);
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static int _prefix_try_argv(char *argv0);
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/* local subsystem globals */
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static char *_exe_path = NULL;
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static char *_prefix_path = NULL;
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/* externally accessible functions */
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static int
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prefix_determine(char *argv0)
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{
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char *p;
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if (!_prefix_try_proc())
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{
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if (!_prefix_try_argv(argv0))
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{
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_prefix_fallbacks();
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return 0;
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}
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}
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/* _exe_path is now a full absolute path TO this exe - figure out rest */
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/* if
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* exe = /blah/whatever/bin/exe
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* then
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* prefix = /blah/whatever
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*/
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p = strrchr(_exe_path, '/');
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if (p)
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{
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p--;
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while (p >= _exe_path)
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{
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if (*p == '/')
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{
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_prefix_path = malloc(p - _exe_path + 1);
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if (_prefix_path)
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{
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strncpy(_prefix_path, _exe_path, p - _exe_path);
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_prefix_path[p - _exe_path] = 0;
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return 1;
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}
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else
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{
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free(_exe_path);
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_exe_path = NULL;
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_prefix_fallbacks();
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return 0;
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}
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}
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p--;
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}
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}
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free(_exe_path);
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_exe_path = NULL;
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_prefix_fallbacks();
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return 0;
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}
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static int
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_prefix_fallbacks(void)
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{
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char *p;
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_prefix_path = strdup(PACKAGE_BIN_DIR);
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p = strrchr(_prefix_path, '/');
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if (p) *p = 0;
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printf("WARNING: Enlightenment could not determine its installed prefix\n"
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" and is falling back on the compiled in default:\n"
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" %s\n", _prefix_path);
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return 1;
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}
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static int
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_prefix_try_proc(void)
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{
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FILE *f;
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char buf[4096];
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void *func = NULL;
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func = (void *)_prefix_try_proc;
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f = fopen("/proc/self/maps", "r");
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if (!f) return 0;
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while (fgets(buf, sizeof(buf), f))
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{
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int len;
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char *p, mode[5] = "";
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unsigned long ptr1 = 0, ptr2 = 0;
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len = strlen(buf);
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if (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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if (sscanf(buf, "%lx-%lx %4s", &ptr1, &ptr2, mode) == 3)
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{
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if (!strcmp(mode, "r-xp"))
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{
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if (((void *)ptr1 <= func) && (func < (void *)ptr2))
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{
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p = strchr(buf, '/');
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if (p)
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{
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if (len > 10)
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{
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if (!strcmp(buf + len - 10, " (deleted)"))
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buf[len - 10] = 0;
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}
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_exe_path = strdup(p);
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fclose(f);
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return 1;
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}
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else
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break;
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}
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}
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}
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}
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fclose(f);
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return 0;
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}
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static int
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_prefix_try_argv(char *argv0)
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{
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char *path, *p, *cp, *s;
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int len, lenexe;
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#ifdef PATH_MAX
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char buf[PATH_MAX], buf2[PATH_MAX], buf3[PATH_MAX];
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#else
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char buf[4096], buf2[4096], buf3[4096];
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#endif
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/* 1. is argv0 abs path? */
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if (argv0[0] == '/')
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{
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_exe_path = strdup(argv0);
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if (access(_exe_path, X_OK) == 0) return 1;
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free(_exe_path);
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_exe_path = NULL;
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return 0;
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}
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/* 2. relative path */
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if (strchr(argv0, '/'))
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{
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if (getcwd(buf3, sizeof(buf3)))
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{
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snprintf(buf2, sizeof(buf2), "%s/%s", buf3, argv0);
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if (realpath(buf2, buf))
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{
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_exe_path = strdup(buf);
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if (access(_exe_path, X_OK) == 0) return 1;
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free(_exe_path);
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_exe_path = NULL;
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}
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}
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}
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/* 3. argv0 no path - look in PATH */
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path = getenv("PATH");
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if (!path) return 0;
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p = path;
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cp = p;
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lenexe = strlen(argv0);
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while ((p = strchr(cp, ':')))
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{
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len = p - cp;
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s = malloc(len + 1 + lenexe + 1);
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if (s)
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{
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strncpy(s, cp, len);
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s[len] = '/';
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strcpy(s + len + 1, argv0);
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if (realpath(s, buf))
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{
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if (access(buf, X_OK) == 0)
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{
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_exe_path = strdup(buf);
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free(s);
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return 1;
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}
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}
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free(s);
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}
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cp = p + 1;
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}
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len = strlen(cp);
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s = malloc(len + 1 + lenexe + 1);
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if (s)
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{
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strncpy(s, cp, len);
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s[len] = '/';
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strcpy(s + len + 1, argv0);
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if (realpath(s, buf))
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{
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if (access(buf, X_OK) == 0)
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{
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_exe_path = strdup(buf);
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free(s);
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return 1;
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}
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}
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free(s);
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}
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/* 4. big problems. arg[0] != executable - weird execution */
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return 0;
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}
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static void
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precache(void)
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{
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FILE *f;
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char *home;
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char buf[4096], tbuf[256 * 1024];
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struct stat st;
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int l, fd, children = 0, cret;
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home = getenv("HOME");
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if (home) snprintf(buf, sizeof(buf), "%s/.e-precache", home);
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else snprintf(buf, sizeof(buf), "/tmp/.e-precache");
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f = fopen(buf, "r");
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if (!f) return;
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unlink(buf);
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if (fork()) return;
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// while (fgets(buf, sizeof(buf), f));
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// rewind(f);
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while (fgets(buf, sizeof(buf), f))
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{
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l = strlen(buf);
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if (l > 0) buf[l - 1] = 0;
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if (!fork())
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{
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if (buf[0] == 's')
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{
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stat(buf + 2, &st);
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}
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else if (buf[0] == 'o')
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{
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fd = open(buf + 2, O_RDONLY);
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if (fd >= 0)
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{
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while (read(fd, tbuf, 256 * 1024) > 0);
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close(fd);
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}
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}
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else if (buf[0] == 'd')
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{
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fd = open(buf + 2, O_RDONLY);
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if (fd >= 0)
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{
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while (read(fd, tbuf, 256 * 1024) > 0);
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close(fd);
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}
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}
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exit(0);
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}
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children++;
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if (children > 400)
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{
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wait(&cret);
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children--;
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}
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}
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fclose(f);
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while (children > 0)
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{
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wait(&cret);
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children--;
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}
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exit(0);
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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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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)
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p_len = p - env;
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else
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p_len = strlen(env);
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if (p_len <= 0)
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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)
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return 1;
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next:
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if (p)
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env = p + 1;
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else
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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 9
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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_mode, const char *valgrind_path, const char *valgrind_log)
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{
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int i = 0;
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if (!valgrind_mode)
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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=0xabc79"; /* 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)
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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)
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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, const 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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int
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main(int argc, char **argv)
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{
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int i, do_precache = 0, valgrind_mode = 0;
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char buf[16384], **args, *p;
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char valgrind_path[PATH_MAX] = "", *valgrind_log = NULL;
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prefix_determine(argv[0]);
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env_set("E_START", argv[0]);
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p = getenv("PATH");
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if (p) snprintf(buf, sizeof(buf), "%s/bin:%s", _prefix_path, p);
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else snprintf(buf, sizeof(buf), "%s/bin", _prefix_path);
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env_set("PATH", buf);
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p = getenv("LD_LIBRARY_PATH");
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if (p) snprintf(buf, sizeof(buf), "%s/lib:%s", _prefix_path, p);
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else snprintf(buf, sizeof(buf), "%s/lib", _prefix_path);
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env_set("LD_LIBRARY_PATH", buf);
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for (i = 1; i < argc; i++)
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{
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if (!strcmp(argv[i], "-no-precache")) do_precache = 0;
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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')
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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')
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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"))
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valgrind_mode = VALGRIND_MODE_ALL;
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else
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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], "-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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("Options:\n"
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"\t-no-precache\n"
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"\t\tDisable pre-caching of files\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-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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);
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exit(0);
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}
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}
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if (valgrind_mode)
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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, do_precache=%i, valgrind=%d", getpid(), do_precache, 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)
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printf(" valgrind-log-file='%s'", valgrind_log);
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}
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putchar('\n');
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if (do_precache)
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{
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void *lib, *func;
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do_precache = 0;
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/* sanity checks - if precache might fail - check here first */
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lib = dlopen("libevas.so", RTLD_GLOBAL | RTLD_LAZY);
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if (!lib) dlopen("libevas.so.1", RTLD_GLOBAL | RTLD_LAZY);
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if (!lib) goto done;
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func = dlsym(lib, "evas_init");
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if (!func) goto done;
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lib = dlopen("libecore_file.so", RTLD_GLOBAL | RTLD_LAZY);
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if (!lib) dlopen("libecore_file.so.1", RTLD_GLOBAL | RTLD_LAZY);
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if (!lib) goto done;
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func = dlsym(lib, "ecore_file_init");
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if (!func) goto done;
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lib = dlopen("libeet.so", RTLD_GLOBAL | RTLD_LAZY);
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if (!lib) dlopen("libeet.so.0", RTLD_GLOBAL | RTLD_LAZY);
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if (!lib) goto done;
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func = dlsym(lib, "eet_init");
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if (!func) goto done;
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/* precache SHOULD work */
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snprintf(buf, sizeof(buf), "%s/lib/enlightenment/preload/e_precache.so", _prefix_path);
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env_set("LD_PRELOAD", buf);
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printf("E - PRECACHE GOING NOW...\n");
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fflush(stdout);
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precache();
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}
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done:
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/* try dbus-launch */
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snprintf(buf, sizeof(buf), "%s/bin/enlightenment", _prefix_path);
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args = alloca((argc + 2 + VALGRIND_MAX_ARGS) * sizeof(char *));
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if (!getenv("DBUS_SESSION_BUS_ADDRESS"))
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{
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args[0] = "dbus-launch";
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args[1] = "--exit-with-session";
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i = 2 + valgrind_append(args + 2, valgrind_mode, 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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execvp("dbus-launch", args);
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}
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/* dbus-launch failed - run e direct */
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i = valgrind_append(args, valgrind_mode, 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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execv(args[0], args);
|
|
|
|
printf("FAILED TO RUN:\n");
|
|
printf(" %s\n", buf);
|
|
perror("execv");
|
|
return -1;
|
|
}
|