367 lines
9.4 KiB
C
367 lines
9.4 KiB
C
/*
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scconfig - detection of standard library features (processes)
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Copyright (C) 2016 Tibor Palinkas
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Project page: http://repo.hu/projects/scconfig
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Contact via email: scconfig [at] igor2.repo.hu
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include "libs.h"
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#include "log.h"
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#include "db.h"
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#include "dep.h"
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int find_proc__spawnvp(const char *name, int logdepth, int fatal)
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{
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char *test_c =
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NL "#include <stdlib.h>"
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NL "int main() {"
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NL " const char *a[3] = {\"/c\", \"echo OK\", NULL};"
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NL " _spawnvp(_P_WAIT, \"cmd\", a);"
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NL " return 0;"
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NL "}"
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NL ;
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require("cc/cc", logdepth, fatal);
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report("Checking for _spawnvp... ");
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logprintf(logdepth, "find_proc__spawnvp: trying to find _spawnvp...\n");
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logdepth++;
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if (try_icl(logdepth, "libs/proc/_spawnvp", test_c, "#include <process.h>", NULL, NULL)) return 0;
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return try_fail(logdepth, "libs/proc/_spawnvp");
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}
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int find_proc_CreateProcessA(const char *name, int logdepth, int fatal)
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{
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const char *key = "libs/proc/CreateProcessA";
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char *test_c =
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NL "#include <stdlib.h>"
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NL "char buf[2000];"
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NL "int main() {"
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NL " const char *cmd;"
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NL " STARTUPINFOA si;"
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NL " PROCESS_INFORMATION pi;"
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NL " cmd = getenv(\"COMSPEC\");"
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NL " if (cmd == NULL) { /* fallback to guessing */"
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NL " UINT len = GetWindowsDirectoryA(buf, sizeof(buf));"
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NL " strcpy(buf+len, \"\\\\system32\\\\cmd.exe\");"
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NL " cmd = buf;"
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NL " }"
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NL " memset(&si, 0, sizeof(si)); si.cb = sizeof(si);"
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NL " if (!CreateProcessA(cmd, \"/c \\\"echo OK\\\"\","
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NL " NULL, NULL, TRUE,"
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NL " 0, NULL, NULL, &si, &pi))"
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NL " return 1;"
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NL " if (WaitForSingleObject(pi.hProcess, INFINITE) != WAIT_OBJECT_0)"
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NL " abort();"
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NL " return 0;"
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NL "}"
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NL ;
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require("cc/cc", logdepth, fatal);
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report("Checking for CreateProcessA... ");
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logprintf(logdepth, "find_proc_CreateProcessA: trying to find CreateProcessA...\n");
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logdepth++;
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if (try_icl(logdepth, key, test_c, "#include <windows.h>", NULL, NULL)) return 0;
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return try_fail(logdepth, key);
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}
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int find_proc_fork(const char *name, int logdepth, int fatal)
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{
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char *test_c =
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NL "#include <stdlib.h>"
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NL "#include <stdio.h>"
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NL "int main() {"
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NL " if (fork() == 0) { return 0; }"
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NL " puts(\"OK\");"
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NL " return 0;"
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NL "}"
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NL ;
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/* NOTE: can't print OK from the child process because of a possible race
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with the parent immediately exiting without wait(). */
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require("cc/cc", logdepth, fatal);
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report("Checking for fork... ");
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logprintf(logdepth, "find_proc_fork: trying to find fork...\n");
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logdepth++;
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if (try_icl(logdepth, "libs/proc/fork", test_c, "#include <unistd.h>", NULL, NULL)) return 0;
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return try_fail(logdepth, "libs/proc/fork");
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}
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int find_proc_wait(const char *name, int logdepth, int fatal)
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{
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char *inc;
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const char *inc1;
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char test_c[1024];
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char *test_c_in =
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NL "%s\n"
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NL "#include <stdlib.h>"
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NL "#include <stdio.h>"
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NL "int main() {"
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NL " int st = 0;"
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NL " if (fork() == 0) {"
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NL " printf(\"O\");"
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NL " return 42;"
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NL " }"
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NL " wait(&st);"
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NL " if (WIFEXITED(st) && (WEXITSTATUS(st) == 42))"
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NL " printf(\"K\");"
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NL " else"
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NL " printf(\"%%d\", st);"
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NL " printf(\"\\n\");"
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NL " return 0;"
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NL "}"
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NL ;
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require("cc/cc", logdepth, fatal);
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if (require("libs/proc/fork", logdepth, fatal))
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return try_fail(logdepth, "libs/proc/wait");
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report("Checking for wait... ");
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logprintf(logdepth, "find_proc_wait: trying to find wait...\n");
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logdepth++;
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inc1 = get("libs/proc/fork/includes");
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if (inc1 != NULL) {
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char *i, *o;
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inc = strclone(inc1);
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for(i = o = inc; *i != '\0'; i++,o++) {
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if ((i[0] == '\\') && (i[1] == 'n')) {
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*o = '\n';
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i++;
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}
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else
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*o = *i;
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}
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*o = '\0';
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sprintf(test_c, test_c_in, inc);
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free(inc);
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}
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else
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sprintf(test_c, test_c_in, "");
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if (try_icl(logdepth, "libs/proc/wait", test_c, "#include <sys/types.h>\n#include <sys/wait.h>", NULL, NULL)) return 0;
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return try_fail(logdepth, "libs/proc/wait");
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}
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int find_proc__getpid(const char *name, int logdepth, int fatal)
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{
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const char *key = "libs/proc/_getpid";
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const char *test_c =
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NL "#include <stdio.h>"
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NL "int main()"
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NL "{"
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NL no_implicit(int, "_getpid", "_getpid")
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NL " if (_getpid() != (-1))"
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NL " puts(\"OK\");"
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NL " return 0;"
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NL "}"
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NL;
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require("cc/cc", logdepth, fatal);
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report("Checking for _getpid()... ");
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logprintf(logdepth, "find_proc__getpid: trying to find _getpid()...\n");
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logdepth++;
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if (try_icl(logdepth, key, test_c, "#include <process.h>", NULL, NULL))
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return 0;
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return try_fail(logdepth, key);
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}
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int find_proc_getexecname(const char *name, int logdepth, int fatal)
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{
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const char *key = "libs/proc/getexecname";
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const char *test_c =
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NL "void my_puts(const char *s);"
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NL "int main()"
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NL "{"
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NL no_implicit(const char*, "getexecname", "getexecname")
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NL " getexecname();"
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NL " my_puts(\"OK\");"
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NL " return 0;"
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NL "}"
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NL "#include <stdio.h>"
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NL "void my_puts(const char *s)"
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NL "{"
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NL " puts(s);"
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NL "}"
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NL;
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require("cc/cc", logdepth, fatal);
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report("Checking for getexecname()... ");
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logprintf(logdepth, "find_proc_getexecname: trying to find getexecname()...\n");
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logdepth++;
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if (try_icl(logdepth, key, test_c, "#include <stdlib.h>", NULL, NULL))
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return 0;
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return try_fail(logdepth, key);
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}
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int find_proc_GetModuleFileNameA(const char *name, int logdepth, int fatal)
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{
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const char *key = "libs/proc/GetModuleFileNameA";
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const char *test_c =
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NL "void my_puts(const char *s);"
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NL "char path_buffer[5000];"
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NL "int main()"
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NL "{"
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NL " HMODULE hModule = GetModuleHandleA(NULL);"
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NL " if (GetModuleFileNameA(hModule, path_buffer, sizeof(path_buffer)) != 0)"
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NL " my_puts(\"OK\");"
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NL " return 0;"
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NL "}"
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NL "#include <stdio.h>"
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NL "void my_puts(const char *s)"
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NL "{"
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NL " puts(s);"
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NL "}"
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NL;
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require("cc/cc", logdepth, fatal);
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report("Checking for GetModuleFileNameA()... ");
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logprintf(logdepth, "find_proc_GetModuleFileNameA: trying to find GetModuleFileNameA()...\n");
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logdepth++;
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if (try_icl(logdepth, key, test_c, "#include <windows.h>", NULL, NULL))
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return 0;
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if (try_icl(logdepth, key, test_c, "#include <windows.h>", NULL, "-lkernel32"))
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return 0;
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return try_fail(logdepth, key);
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}
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int find_proc_shmget(const char *name, int logdepth, int fatal)
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{
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const char *key = "libs/proc/shmget";
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const char *test_c =
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NL "void my_puts(const char *s);"
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NL "int main()"
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NL "{"
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NL " int shmid;"
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NL " char *addr;"
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NL " shmid = shmget(IPC_PRIVATE, 4096, IPC_CREAT|IPC_EXCL|0600);"
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NL " if (shmid < 0)"
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NL " return 1;"
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NL " addr = (char *)shmat(shmid, (void *)0, 0);"
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NL " if (addr == (char *)0) {"
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NL " shmctl(shmid, IPC_RMID, (void *)0);"
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NL " return 1;"
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NL " }"
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NL " if (shmctl(shmid, IPC_RMID, (void *)0) != 0)"
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NL " return 1;"
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NL " if (addr[2] != 0)"
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NL " return 1;"
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NL " addr[0] = 'O'; addr[1] = 'K';"
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NL " my_puts(addr);"
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NL " return 0;"
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NL "}"
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NL "#include <stdio.h>"
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NL "void my_puts(const char *s)"
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NL "{"
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NL " puts(s);"
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NL "}"
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NL;
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require("cc/cc", logdepth, fatal);
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report("Checking for shmget()... ");
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logprintf(logdepth, "find_proc_shmget: trying to find shmget()...\n");
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logdepth++;
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if (try_icl(logdepth, key, test_c, "#include <sys/ipc.h>\n#include <sys/shm.h>", NULL, NULL))
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return 0;
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return try_fail(logdepth, key);
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}
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int find_proc_CreateFileMappingA(const char *name, int logdepth, int fatal)
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{
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const char *key = "libs/proc/CreateFileMappingA";
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const char *test_c =
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NL "void my_puts(const char *s);"
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NL "#define MAP_BUF_SIZE 4096"
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NL "int main()"
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NL "{"
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NL " char *addr;"
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NL " HANDLE hMap = CreateFileMappingA("
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NL " INVALID_HANDLE_VALUE,"
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NL " NULL,"
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NL " PAGE_READWRITE,"
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NL " 0,"
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NL " MAP_BUF_SIZE,"
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NL " NULL);"
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NL " if (hMap == NULL)"
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NL " return 1;"
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NL " addr = (char *)MapViewOfFile(hMap, FILE_MAP_ALL_ACCESS,"
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NL " 0, 0, MAP_BUF_SIZE);"
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NL " if (addr == NULL) {"
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NL " CloseHandle(hMap);"
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NL " return 1;"
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NL " }"
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NL " if (addr[2] != 0) {"
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NL " UnmapViewOfFile(addr);"
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NL " CloseHandle(hMap);"
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NL " return 1;"
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NL " }"
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NL " addr[0] = 'O'; addr[1] = 'K';"
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NL " my_puts(addr);"
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NL " UnmapViewOfFile(addr);"
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NL " CloseHandle(hMap);"
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NL " return 0;"
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NL "}"
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NL "#include <stdio.h>"
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NL "void my_puts(const char *s)"
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NL "{"
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NL " puts(s);"
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NL "}"
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NL;
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require("cc/cc", logdepth, fatal);
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report("Checking for CreateFileMappingA()... ");
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logprintf(logdepth, "find_proc_CreateFileMappingA: trying to find CreateFileMappingA()...\n");
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logdepth++;
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if (try_icl(logdepth, key, test_c, "#include <windows.h>", NULL, NULL))
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return 0;
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if (try_icl(logdepth, key, test_c, "#include <windows.h>", NULL, "-lkernel32"))
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return 0;
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return try_fail(logdepth, key);
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}
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