114 	ssize_t rv;  in pwrite_validate()  local
119 	rv = pwrite(fd, buf, n_bytes, offset);  in pwrite_validate()
120 	if (rv == -1) {  in pwrite_validate()
125 	if (pread(fd, r_buf, rv, offset) == rv && memcmp(r_buf, buf, rv) == 0) {  in pwrite_validate()
127 		return rv;  in pwrite_validate()
137 	int rv, i;  in write_boot_area()  local
152 	rv = pwrite_validate(params->fsfd, buf, 512, 0);  in write_boot_area()
153 	if (rv == 512) {  in write_boot_area()
158 		rv = pwrite_validate(params->fsfd, buf + 512 * 2, len, 512 * 2);  in write_boot_area()
159 		if (rv != (ssize_t)len)  in write_boot_area()
163 	if (rv != -1 || (errno != EINVAL && errno != EROFS))  in write_boot_area()
168 		rv = pwrite_validate(params->fsfd, buf, len, 0);  in write_boot_area()
169 		if (rv == (ssize_t)len)  in write_boot_area()
171 		if (rv != -1 || (errno != EROFS))  in write_boot_area()
178 	rv = ioctl(params->fsfd, DIOCWLABEL, &i);  in write_boot_area()
179 	if (rv != 0) {  in write_boot_area()
184 	rv = pwrite_validate(params->fsfd, buf, len, 0);  in write_boot_area()
189 	if (rv == (ssize_t)len)  in write_boot_area()
194 	if (rv == -1)  in write_boot_area()
198 			params->filesystem, rv);  in write_boot_area()
305 	ssize_t		rv;  in i386_setboot()  local
334 	rv = pread(params->fsfd, &disk_buf, sizeof (disk_buf), 0);  in i386_setboot()
335 	if (rv != sizeof(disk_buf)) {  in i386_setboot()
336 		if (rv == -1)  in i386_setboot()
340 			    " (should be %ld)", params->filesystem, (long)rv,  in i386_setboot()
355 	rv = pread(params->s1fd, &bootstrap, params->s1stat.st_size, 0);  in i386_setboot()
356 	if (rv != params->s1stat.st_size) {  in i386_setboot()
357 		if (rv == -1)  in i386_setboot()
361 			    " (should be %ld)", params->stage1, (long)rv,  in i386_setboot()
492 	ssize_t		rv;  in i386_editboot()  local
510 		rv = pread(params->fsfd, &buf, sizeof buf, offset);  in i386_editboot()
511 		if (rv == -1) {  in i386_editboot()
514 		} else if (rv != sizeof buf) {  in i386_editboot()
551 	rv = pwrite(params->fsfd, buf, sizeof buf, offset);  in i386_editboot()
552 	if (rv == -1) {  in i386_editboot()
555 	} else if (rv != sizeof buf) {  in i386_editboot()
557 		    params->filesystem, rv, sizeof(buf));  in i386_editboot()