1 #include "stdio_impl.h"
4 static inline void nc_close(int fd)
6 __syscall(SYS_close, fd);
8 #define close(x) nc_close(x)
10 FILE *popen(const char *cmd, const char *mode)
16 const char *modes = "rw", *mi = strchr(modes, *mode);
25 if (pipe(p)) return NULL;
26 f = fdopen(p[op], mode);
41 if (dup2(p[1-op], 1-op) < 0) _exit(127);
42 if (p[0] != 1-op) close(p[0]);
43 if (p[1] != 1-op) close(p[1]);
44 execl("/bin/sh", "sh", "-c", cmd, (char *)0);