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#include <fstream>
#include <fcntl.h>
#include <spawn.h>
#include <string.h>
#include <unistd.h>
#include <sys/wait.h>
const char LD_SO_CONF[] = R"(/lib
/lib/x86_64-linux-gnu
/lib64
/usr/lib
/usr/lib/x86_64-linux-gnu
/usr/lib64
/lib/i386-linux-gnu
/lib32
/usr/lib/i386-linux-gnu
/usr/lib32
/run/opengl-driver/lib
/run/opengl-driver-32/lib
)";
int main(int, const char *argv[]) {
std::ofstream ld_so_conf;
ld_so_conf.open("/etc/ld.so.conf");
ld_so_conf << LD_SO_CONF;
ld_so_conf.close();
if (!ld_so_conf) {
perror("Failed to generate ld.so.conf");
return 1;
}
int e;
pid_t pid;
const char *ldconfig_argv[] = {"/bin/ldconfig", NULL};
char *ldconfig_envp[] = {NULL};
posix_spawn_file_actions_t action;
posix_spawn_file_actions_init(&action);
posix_spawn_file_actions_addopen (&action, STDERR_FILENO, "/dev/null", O_WRONLY|O_APPEND, 0);
if ((e = posix_spawn(&pid, ldconfig_argv[0], &action, NULL,
(char *const *)ldconfig_argv, ldconfig_envp))) {
fprintf(stderr, "Failed to run ldconfig: %s\n", strerror(e));
return 1;
}
posix_spawn_file_actions_destroy(&action);
int status;
if (waitpid(pid, &status, 0) == -1) {
perror("Failed to wait for ldconfig");
return 1;
}
if (WIFEXITED(status)) {
if (WEXITSTATUS(status)) {
fprintf(stderr, "ldconfig exited %d\n", WEXITSTATUS(status));
return 1;
}
} else {
fprintf(stderr, "ldconfig killed by signal %d\n", WTERMSIG(status));
return 1;
}
argv[0] = "/init";
execv(argv[0], (char *const *)argv);
perror("Failed to exec stage 2 init");
return 1;
}
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