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