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#include <unistd.h> #include <errno.h> #include <fcntl.h> #include "syscall.h" int fchdir(int fd) { int ret = __syscall(SYS_fchdir, fd); if (ret != -EBADF || __syscall(SYS_fcntl, fd, F_GETFD) < 0) return __syscall_ret(ret); char buf[15+3*sizeof(int)]; __procfdname(buf, fd); return syscall(SYS_chdir, buf); }