function 1
tatic int copy_user_segment_list(struct kimage *image, unsigned long nr_segments, struct kexec_segment __user *segments) { int ret; size_t segment_bytes; /* Read in the segments */ image->nr_segments = nr_segments; segment_bytes = nr_segments * sizeof(*segments); ret = copy_from_user(image->segment, segments, segment_bytes); if (ret) ret = -EFAULT; return ret; }