#include <unistd.h>
#include <errno.h>
+#include <limits.h>
+#include <string.h>
#include "syscall.h"
char *getcwd(char *buf, size_t size)
{
- return syscall(SYS_getcwd, buf, size) < 0 ? NULL : buf;
+ char tmp[PATH_MAX];
+ if (!buf) buf = tmp, size = PATH_MAX;
+ if (syscall(SYS_getcwd, buf, size) < 0) return 0;
+ return buf == tmp ? strdup(buf) : buf;
}