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#include "dietstdio.h"
#include <unistd.h>
#include <fcntl.h>
#include "binshstr.h"
extern char **environ;
FILE *popen(const char *command, const char *type) {
int pfd[2];
int fd0;
FILE* f;
pid_t pid;
if (pipe(pfd)<0) return 0;
fd0=(*type=='r');
if (!(f=fdopen(pfd[!fd0],type))) {
close(pfd[0]); /* malloc failed */
close(pfd[1]);
return 0;
}
if ((pid=fork())<0) {
close(pfd[0]);
close(pfd[1]);
return 0;
}
if (!pid) { /* child */
const char *argv[]={__sh,"-c",0,0};
close(pfd[!fd0]); close(fd0);
dup2(pfd[fd0],fd0); close(pfd[fd0]);
argv[2]=command;
execve(__binsh,(char*const*)argv,environ);
_exit(127);
}
close(pfd[fd0]);
fcntl (pfd[!fd0], F_SETFD, FD_CLOEXEC);
f->popen_kludge=pid;
return f;
}
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