bsd/kern/kern_descrip.c

190  * Parameters:  fl		Flock structure.
199 check_file_seek_range(struct flock *fl, off_t cur_file_offset)
201 	if (fl->l_whence == SEEK_CUR) {
203 		if (CHECK_ADD_OVERFLOW_INT64L(fl->l_start, cur_file_offset)) {
205 			if (fl->l_start < 0) {
211 		if (fl->l_start + cur_file_offset < 0) {
215 		if ((fl->l_len > 0) && (CHECK_ADD_OVERFLOW_INT64L(fl->l_start +
216 			cur_file_offset, fl->l_len - 1))) {
220 		if ((fl->l_len <= 0) && (fl->l_start + cur_file_offset +
221 			fl->l_len < 0)) {
224 	} else if (fl->l_whence == SEEK_SET) {
226 		if (fl->l_start < 0) {
230 		if ((fl->l_len > 0) &&
231 		    CHECK_ADD_OVERFLOW_INT64L(fl->l_start, fl->l_len - 1)) {
235 		if ((fl->l_len < 0) &&  fl->l_start + fl->l_len < 0) {
758 	struct flock fl;
967 			fl = fltimeout.fl;
970 			error = copyin(argp, (caddr_t)&fl, sizeof(fl));
978 		error = check_file_seek_range(&fl, offset);
986 		if (fl.l_whence == SEEK_CUR)
987 			fl.l_start += offset;
991 		    F_SETLK, &fl);
997 		switch (fl.l_type) {
1007 			error = VNOP_ADVLOCK(vp, (caddr_t)p, F_SETLK, &fl, flg, &context, timeout);
1019 			error = VNOP_ADVLOCK(vp, (caddr_t)p, F_SETLK, &fl, flg, &context, timeout);
1024 			error = VNOP_ADVLOCK(vp, (caddr_t)p, F_UNLCK, &fl,
1046 		error = copyin(argp, (caddr_t)&fl, sizeof(fl));
1052 		error = check_file_seek_range(&fl, offset);
1057 		if ((fl.l_whence == SEEK_SET) && (fl.l_start < 0)) {
1062 		switch (fl.l_type) {
1072 		switch (fl.l_whence) {
1083 			if (fl.l_whence == SEEK_CUR)
1084 			        fl.l_start += offset;
1088 			    uap->cmd, &fl);
1091 			error = VNOP_ADVLOCK(vp, (caddr_t)p, uap->cmd, &fl, F_POSIX, &context, NULL);
1096 				error = copyout((caddr_t)&fl, argp, sizeof(fl));