#include <sys/stat.h>
+#include <errno.h>
+#include <fcntl.h>
#include "syscall.h"
int fchmod(int fd, mode_t mode)
{
- return syscall(SYS_fchmod, fd, mode);
+ int ret = __syscall(SYS_fchmod, fd, mode);
+ if (ret != -EBADF || __syscall(SYS_fcntl, fd, F_GETFD) < 0)
+ return __syscall_ret(ret);
+
+ char buf[15+3*sizeof(int)];
+ __procfdname(buf, fd);
+#ifdef SYS_chmod
+ return syscall(SYS_chmod, buf, mode);
+#else
+ return syscall(SYS_fchmodat, AT_FDCWD, buf, mode);
+#endif
}